Aircraft Report for n529as



Registration History for n529as







N-Number Make Model Serial Location Description Time
N529AS BOEING 737-890 35198 SEATAC, WA Aircraft registered to ALASKA AIRLINES INC, airworthiness date 2010-04-05, expiration date 2026-02-28, serial number 35198. 2022-10-03
N529AS BOEING 737-890 35198 SEATAC, WA Aircraft registered to ALASKA AIRLINES INC, airworthiness date 2010-04-05, expiration date 2023-02-28, serial number 35198. 2019-09-13
N529AS BOEING 737-890 35198 SEATAC, WA Aircraft registered to ALASKA AIRLINES INC, airworthiness date 2010-04-05, expiration date 2020-02-29, serial number 35198. 2016-09-16
N529AS BOEING 737-890 35198 SEATAC, WA Aircraft registered to ALASKA AIRLINES INC, airworthiness date 2010-04-05, expiration date 2020-02-29, serial number 35198. 2016-09-16
N529AS BOEING 737-890 35198 SEATAC, WA Aircraft registered to ALASKA AIRLINES INC, airworthiness date 2010-04-05, expiration date 2017-02-28, serial number 35198. 2013-09-16
N529AS BOEING 737-890 35198 SEATAC, WA Aircraft registered to ALASKA AIRLINES INC, airworthiness date 2010-04-05, expiration date 2014-02-28, serial number 35198. 2011-02-24

Service Difficulty Reports for n529as







































































































































































































































































































N-Number Make Model Serial Description Time
N529AS BOEING 737890 During TAXI/GRND HDL - SINGLE FMC OPERATION ON SCRATCH PAD AFTER BOTH ENGINES STARTED. F/O HAS VTK FLAG AND MAP FLAG ON NAV DISPLAY. GROUNDED -YES. REMOVED & REPLACED #2 FMC PULLED & RESET 2 ASSOCIATED C.B.'S B737-800 AMM 34-61-02 OPS TEST NORMAL. 2022-11-23
N529AS BOEING 737890 During INSP/MAINT - FLIGHT CREW REPORTS VTK ON F.O. DISPLAY. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 34-61 TASK 836. OPS CHECK GOOD. 2022-11-23
N529AS BOEING 737890 During INSP/MAINT - REF ASA T/C 78472010 #1 ENG. CFM56-7 FAN BLADE LUBRICATION. FOUND PLATFORM #8 HAS BOTH RUBSTRIPS DEBONDED HALF WAY DOWN.#8 IS PRE-SERVICE (816) REQ #20 TO BE REPLACED. GROUNDED - YES. REPLACED #8 AND #20 PLATFORM IAW T/C 78472010 STEP 1.C.(3) AND 1.A.(35). (817-7 PLATFORMS INSTALLED. VIBE SURVEY ACCOMPLISHED REF T/C 78472010. VIBES NORMAL LIMITS. 2022-11-22
N529AS BOEING 737890 During NOT REPORTED - SINGLE FMC "VTK" ON FO'S SIDE. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 34-61 TASK 835. DUAL FMC RESTORED. 2022-11-18
N529AS BOEING 737890 During CRUISE - VNAV INOP. DURING CRUISE ATC GAVE US ALTITUDE CHANGE. UPON REACHING CRUISE ALTITUDE VNAV DROPPED OFF AND UNABLE TO SELECT. FMC CLIMB PAGE WAS BLANK AND UNABLE SELECT ALTITUDE IN REQUIRED BOX. FMC UNABLE TO COMPUTE ETA'S AND FUEL CONSUMPTIONESTIMATES. GROUNDED - YES. FMC L + R BITE INDICATE NO CURRENT OR HISTORICAL FAULTS. FCC A + B EACH SEAT LAST LEG FAULT22-11822: FMC DATA INVALID. ACCOMPLISHED RESPECTIVE LRU TEST FOR BOTH A + B W/ NO FAILURES INDICATED PER B737-800 FIM 22-11 TASK 811. HGS SET "FCC 1" FAULT LAST LEG. ACCOMPLISHED FCC A LIBRARY TEST W/ NO FAILURES INDICATED. ACCOMPLISHED FMCS OPERATIONAL TEST W/ NO DEFECTS OBSERVED PER B737-800 AMM 34-61-00. REF. FIM 34-61 TASK 845 AND 22-11 TASK 831: ADIRS L 2022-10-13
N529AS BOEING 737890 During CLIMB - DURING AFTER T/O CHECKLIST, WHEN LANDING GEAR IN OFF POSITION, RED NOSE GEAR ANNUNCIATOR ON. NOSE GEAR DOWN AND LOCKED.GEAR CAME BACK UP W/2ND UP LEVER. GROUNDED - YES. 20 CBS PULLED AND NOSE OF AIRCRAFT JACKED UP REF B737-800 AMM 07-11-21-580-801. PERFORMED B737-800 FIM 32-30 TASK 809 AND OPS TEST OF NLG REF AMM 32-33-00-710-801. OPS CHECK GOOD, NO DEFECTSNOTED. 20 CBS RESET. DISCONNECTED AND RECONNECTED LWR NLG WHEEL WELL DOOR RODS, NO ADJUSTMENTS MADE REF AMM 32-33-61. 2022-08-02
N529AS BOEING 737890 During INSP/MAINT - FLT CREW REPORTS #2 ENG FIRE DETECTION FAILS TEST - B LOOP INOP. GROUNDED - YES. ON DEFERRAL.FLT CREW REPORTS #2 ENG FIRE DETECTION FAILS TEST - B LOOP INOP. GROUNDED - YES. CONFIRMED FAULT, #2 ENGINE B-LOOP INOP. REPAIRED R/H CORE DETECTOR HARNESS WIRING TERMINAL LUG REF STANDARD WIRE PRACTICES. FOUND UPPER FAN LOOP DEFECTIVE. REMOVED & REPLACED UPPER FANDETECTOR REF B737-800 AMM 26-11-01, OPS CK NML. 2022-07-27
N529AS BOEING 737890 During NOT REPORTED - THE FA REPORTS THE LIGHTS THAT ILLUMINATE THE EMERGENCY EXIT AT 17A ARE INOP. GROUNDED - YES. RELAMPED SIDEWALL LIGHT ONEMERGENCY EXIT @ 17A AS REQUIRED. OPS TEST NORMAL. 2022-07-27
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE ON GROUND, RESOLVED PER QRH PROCEDURE. GROUNDED - YES. RESOLVED PER QRH RESET PROCEDURE. 2022-07-27
N529AS BOEING 737890 During TAKEOFF - ON TAKE OFF ROLL AFTER PRESSING TOGA #1 THRUST LEVER ADVANCED AND #2 DID NOT. A/T DISENGAGED. RE-ENGAGED WITH SAME RESULT. GROUNDED - YES. COMPLETED BITE TEST OF AUTO THROTTLE AMM 21-31 TASK 801 RESET FCC-A AS PER TEST RESULTS, SECOND BITETEST ATTEMPT PASSED. 2022-07-01
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER ENGINE START, NO VOLTS/FREQS ON #1 GENERATOR. GROUNDED - YES. REMOVED AND REPLACED # 1 IDG IAW B737-800 AMM 24-11-11 . OP CHECK/ LEAK CHECK GOOD . 2022-05-04
N529AS BOEING 737 During TAXI/GRND HDL - ON PUSHBACK WHILE STARTING #2 ENGINE RAMP REPORTED EXCESSIVE FUEL LEAKING FROM ENGINE SHUT DOWN WAS NORMAL. GROUNDED - YES. INSPECTED ENG DRAINS REFB737-800 AMM 71-71-00. NO LEAKS N0TED WITH ENGINE OFF. FUEL PUMP PAD DRAIN LEAKS 3 DROPS PERMINUTE ENG RUNNING. REMOVED & REPLACED #2 ENG FUEL PUMP PACKAGE REF AMM 73-11-01-400. COMPLETED FUEL PUMP PACKAGE INSTALLATION REF AMM 73-11-01-400-801-F00 STEPS I,J,K. 2022-04-20
N529AS BOEING 737890 During CRUISE - LEFT FMC FAILURE DURING FLIGHT. DID NOT COME BACK ON. GROUNDED - YES. CONFIRMED. OPENED, RESET 1 EA C/B ON P18-2 L/H FMC. L/H FMC NOW OPS NML REF B737-800 FIM 34-61 TASK 810. ETOPS GROUND VERIFICATION SUCCESSFUL. 2022-03-24
N529AS BOEING 737890 During INSP/MAINT - FLANGE ASSEMBLY ON #2 ENGINE HAS CRACKS WERE THE BOLTS ATTACH. GROUNDED - YES. REMOVED AND REPLACED # 2 ENG AFT FLANGE ASSY REF B737-800 AMM 72-56-00-400-801-F00. 2022-03-24
N529AS BOEING 737890 During NOT REPORTED - CONT CABIN ZONE TEMP ON RECALL CLEARS WHEN RESETTING MASTER CAUTION. GROUNDED - YES. FOUND PZTC 2 FLT DECK TRIM VALVE FAULT-CLEARED ON VERIFY REFB737-800 FIM 21-62 TASK 832. 2022-03-24
N529AS BOEING 737890 During CRUISE - IFSD DISPLAYS OUT OF ORDER. GROUNDED - YES. AIR TURNBACK - DIVERSION TIME 83 MINUTES. T/S IAW B737-800 FIM 34-24 TASK 810. DETERMINED TO BE INTERMITTENT FAULT. PERFORMED ISFD OPS CHK IAW B737-800 AMM 34-24-02. OPS CHK OK. 2022-03-24
N529AS BOEING 737890 During INSP/MAINT - SPEED TRIM FAIL LIGHT ILLUMINATED. (GROUND MAINT. WRITE-UP). GROUNDED - YES. ACCOMPLISHED DFCS BITE SPEED & STAB TRIM, FOUND ELEV POS SEN-2 FAULT. RESEATED POSN SEN-2 PLUG RAN BITE AGAIN PASSES NORMAL NO FAULTS BUT SPEED TRIM FAIL ILLUMINATES AGAIN REF B737-800 AMM 22-11-30-820-801. ACCOMPLISHED B737-800 FIM 22-11 TASK 849 "SPD TRIM FAIL LIGHT" FAULT ISOLATION, SHOWS "SPD TRIM WARN" FCC-B #22-11323. PERFORMED FIM 22-14 TASK 808 & AMM 22-11-00-740-806, SPD TRIM SYSTEM OPS CK NML. 2022-03-22
N529AS BOEING 737890 During NOT REPORTED - APU DET INOP LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED APU OVERHEAT DETECTOR ASSEMBLY (TAILCONE) REF B737-800 AMM 26-15-01. REVERSED MAINT PROC FOR MEL 26-8D. OPS CHECK GOOD. ALL TEST PASS REF AMM 26-15-00. THIS CLEARS MEL 26-8D C/N: 21024529 SEAMC DAVE NOTIFIED AND PLACARD REMOVED. GROUND VERIFICATION TEST SUCCESSFUL. 2022-03-14
N529AS BOEING 737890 During INSP/MAINT - DURING WALK AROUND NOTED #1 IDG OIL COOLER LEAKING. GROUNDED - YES. REMOVED & REPLACED #1 ENG IDG OIL COOLER REF M/M 73-11-06 LEAK CKS GOOD. 2022-03-04
N529AS BOEING 737890 During INSP/MAINT - PER T/C 78472010 #1 ENG FAN BLADE LUBE #24 FAN BLADE CU-NI-IN COATING IS MISSING BEYOND LIMITS. GROUNDED - YES. REMOVEDAND REPLACED #24 FAN BLADE FOR WEAR, REMOVED #12 AS A PAIR REF T/C 78472010. 2022-02-23
N529AS BOEING 737890 During INSP/MAINT - PER T/C 78472010 #1 ENG FAN BLADE LUBE #18 FAN BLADE CU-NI-IN COATING IS MISSING BEYOND LIMITS. GROUNDED - YES. REMOVEDAND REPLACED #18 FAN BLADE REF T/C 78472010. 2022-02-23
N529AS BOEING 737890 During INSP/MAINT - PER T/C 78472010 #1 ENG FAN BLADE LUBE #10 FAN BLADE CU-NI-IN COATING IS MISSING BEYOND LIMITS. GROUNDED - YES. REMOVEDAND REPLACED #10 FAN BLADE REF T/C 78472010. 2022-02-23
N529AS BOEING 737890 During INSP/MAINT - PER T/C 78472010 #1 ENG FAN BLADE LUBE #14 FAN BLADE CU-NI-IN COATING IS MISSING BEYOND LIMITS. GROUNDED - YES. REMOVEDAND REPLACED #14 FAN BLADE REF T/C 78472010. 2022-02-23
N529AS BOEING 737890 During INSP/MAINT - PER T/C 78472010 #1 ENG FAN BLADE LUBE #6 FAN BLADE CU-NI-IN COATING IS MISSING BEYOND LIMITS. GROUNDED - YES. REMOVED AND REPLACED #6 FAN BLADE REF T/C 78472010. 2022-02-23
N529AS BOEING 737890 During INSP/MAINT - PER T/C 78472010 #1 ENG FAN BLADE LUBE #9 PLATFORM SIDE IS TORN. GROUNDED - YES. REMOVED AND REPLACED #1 ENG #9 PLATFORMREF T/C 78472010. 2022-02-23
N529AS BOEING 737890 During CRUISE - ONE HOUR INTO CRUISE AT FL380 CABIN PRESSURIZATION SUDDENLY WENT TO 3500-4000 FPM DESCENT FOR APPROXIMATELY 20 SECONDS .DURING THIS TIME THE CABIN DIFFERENTIAL ROSE FROM BOTTOM OF "ORANGE BAND" TO JUST BELOW "RED MAX" LINE. CONTINUED FLT AT FL340; ACFT CONTINUED TO HAVE OCCASIONAL MINOR RATE FLUCTUATIONS OF <500 FPM (CLIMB AND DESCENT". CABIN DIFF REMAINEDAT OR JUST BELOW RED LINE. CABIN ALTITUDE REMAINED AT 4000 AT CRUISE ALTITUDE. DURING DESCENT, AIRCRAFT FAILED TO DEPRESSURIZE. "ALT" PRESSURIZATION MODE WAS SELECTED, CABIN DIFF. REMAINED ABOVE COMPLETED DEPRESSURIZATION IN MANUAL MODE. GROUNDED - YES. PERFORMED B737-800 FIM TASK 21-31-00-810-801 DCPC BITE PROCEDURE. FOUND "OFU LRU FAIL" FAULT CODE 009 STO 2022-01-28
N529AS BOEING 737890 During TAXI/GRND HDL - #1 REVERSER LIGHT ILLUMINATED ON OVERHEAD PANEL AFTER START. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 75-32 TASK 812. NO FAULTS FOUND. REMOVED AND INSTALLED NEW #1 SWITCH PACK ASSEMBLY PER B737-800 MM 76-11-07/401, OPS NORMAL. GROUND VERIFICATION SUCCESSFUL. OPENED, COLLARD, RESET 11 C/B'S PLACARD REMOVED. THIS CLEARS MEL78-1B. REVERSED MX CONFIG #1, SEAMCDAVE NOTIFIED. 2022-01-28
N529AS BOEING 737890 During INSP/MAINT - #1 ENGINE OIL TREND DATA SHOWS OIL CONSUMPTION TREND INCREASING ON RECENT FLIGHTS. GROUNDED - YES. ACCOMPLISHED STEP 1OF TSR FOUND #1 ENGINE DRY PAD LEAKING, AND FOUND OUTER SEALS ON LUBRICATION UNIT LEAKING. REMOVED AND REPLACED #1 ENG DRY PAD "O" RINGS PER B737-800 AMM 72-63-01-400-801. ACCOMPLISHED LEAK CHECK OF 1 ENG DRIVE PAD REF AMM 72-63-01-400-801F00 STEP 3,G. REMOVED AND REPLACED PACKINGS ON INNER SEALING SPOOL OF LUBRICATION UNIT PER AMM 79-21-01-400-802-F00. LEAK CK GOOD. ENG OIL WAS DRAIN & SERVICED PER AMM 12-13-11-600-803. ACCOMPLISHED TEST 3B PART POWER LEAK CHECK. NO LEAKS NOTED. 2021-12-27
N529AS BOEING 737890 During INSP/MAINT - DURING OVERHEAT DETECTION/FIRE TEST, #1 ENGINE WOULD NOT ILLUMINATE ON LOOP B. LOOP A OPERATES NORMALLY. GROUNDED - YES.PERFORMED OPERATIONAL TEST OF OVERHEAD FIRE DETECTION. PERFORMED ENGINE FIRE DETECTION BITE PROCEDURE B737-800 FIM 26-10 TASK 801, NO FAULTS SHOWS. ACCOMPLISHED VISUAL INSPECTION REF B737-800 AMM 26-11-01 PER TECH SERVICES. ALL OPS TEST GOOD, NO DEFECTS NOTED. GROUND VERIFICATION SUCCESSFUL. 2021-12-14
N529AS BOEING 737890 During CLIMB - LANDING GEAR EXTENDED WHEN LANDING GEAR LEVER WAS MOVED TO THE OFF POSITION DURING THE AFTER TAKE CHECK LIST. RAN THE GEAR DISAGREE QRH AND GEAR RETRACTED NORMALLY. LANDING GEAR LEVER WAS LEFT IN THE UP POSITION IN ACORDANCE TO THE CHECKLIST. GROUNDED - YES. DIVERSION TIME 30 MINUTES - REMOVED AND REPLACED LANDING GEAR CONTROL LEVER MODULE, REF B737-800 AMM32-31-11. OPS CHECK GOOD REF AMM 32-31-11 OPS CHECK GOOD. ACCOMPLISHED CONFIRMATION OF REPAIR REF B737-800 FIM TASK 32-30 TASK 809 ALL CHECKS GOOD. 2021-12-02
N529AS BOEING 737890 During INSP/MAINT - DURING TASK CARD #78273000 ACCOMPLISHMENT, FOUND FAULT CODE 77-11172 ON # 2 ENGINE, THE N1 SIGNAL IS OUT OF RANGE, THISIS A LONG TIME FAULT. GROUNDED - YES. VERIFIED DEFECT, FAULT LOGGED ON EVERY LEG. REMOVED AND REPLACED #2 ENG N1 SPEED SENSOR REF B737-800 AMM 77-11-01, OPS AND LEAK CHECK GOOD. 2021-10-08
N529AS BOEING 737890 During INSP/MAINT - #1 HYD ENG PUMP IS LEAKING 1 DROP PER MINUTE. YOU ARE ALLOWED 1 DROP EVERY 10 MINS. LEAKING AT CASE HALF. ENG HYD PUMP NEEDS TO BE REPLACED. GROUNDED - YES. REMOVED POWER FROM A&B HYD SYSTEM PER B737-800 AMM 29-11-00-860-805. DEPRESSURIZATION OF HYD RESERVOIRS, PER AMM 29-09-00-860-802, PULLED C/B B-15 (HYD SYS PUMP DEPRESS VALVE 1) DISCONNECTED ELEC CONNECTOR AND HYD LINES. REF L/P 60181411 FOR DISCONNECTED HYD SUPPLY LINE FROM PYLON UP TOP. REMOVED ENGINE DRIVEN HYD PUMP PER AMM 29-11-11-000-801-001. FITTING NEED TO BE PUT ON NEW PUMP AND TORQUED. INSTALLED NEW HYD PUMP REF AMM 29-11-11-400-801-001 LEAK CHECK PERFORMED, NO LEAKS FOUND. 2021-09-28
N529AS BOEING 737890 During INSP/MAINT - WHILE CHANGING FUEL NOZZLES, FOUND BROKEN TERMINAL LUG ON WIRE HARNESS. GROUNDED - YES. REMOVED AND REPLACED WIRE HARNESS MW0326 ON #1 ENGINE REF B737-800 AMM 26-11-02. ACCOMPLISHED ENGINE FIRE DETECTION OPERATIONAL TEST, NO FAULTS NOTED, REF AMM 26-11-00-710-801. 2021-09-21
N529AS BOEING 737890 During CLIMB - IN CLIMB OUT WITH FO F/D ON MASTER VNAV DISENGAGED AND LNAV TRACK DISAPPEARED FROM FO NAV DISPLAY. "SINGLE FMC OPERATION" IN FO SCRATCHPAD WITHOUT ANY INDICATIONS OTHER THAN FMC P/RST. FMC RESTORED ON ITS OWN WITHIN APPROX 3 MIN. GROUNDED -YES. DFCS HISTORY BITE SHOWED FAULT CODE 22-11822. T/S PER B737-800 FIM 22-11 TASK 811 - OPS NML. OK FOR SVC. FMC OPS NML - DUAL LAND PASS PER AMM AND FMC TEST PASS PER B737-800 AMM 34-61-00. 2021-07-07
N529AS BOEING 737890 During INSP/MAINT - WXR FAIL INDICATION ON BOTH CA & RO ND'S WHEN WXR IS SELECTED ON THE EFIS CONTROL PANELS. NO TEST PATTERN OBSERVED WHENTESTIS SELECTED ON THE WEATHER RADAR CONTROL PANEL. GROUNDED - YES. (RESOLVED ON W/O: 1869328 TASKCARD: N/R-00001 ) REMOVED AND REPLACED WEATHER RADAR RECEIVER/TRANSMITTER AND OP CHECK GOOD IAW ASA B737-800 AMM 34-43-41. THIS CLEARS MEL 34-15D, SEAMC PHILIP. NOTIFIED. PLACARDS REMOVED. 2021-07-01
N529AS BOEING 737890 During INSP/MAINT - EMERG EXIT LIGHT @ 9 LH/OVHD BIN INOP. GROUNDED - YES. RELAMPED EMERGENCY EXIT LIGHT AT 9 LH OVERHEAD BIN AND OPS TESTSGOOD IAW B737-800 AMM 33-51-03-960-801. 2021-06-29
N529AS BOEING 737890 During INSP/MAINT - MAIN CABIN AFT @ L2 DOOR. FLOORBEAM CORRODED AT STATION 986. GROUNDED - YES. REMOVED CORROSION IAW B737-800 SRM 53-70-51. ORIG MAT IS .150, REMAINING MAT IS .103. MAT LOSS OF .047 IS BEYOND ALLOWABLE LIMITS. REMOVED UPPER T-CAP CHORD AND INSTALLED NEW T-CAP CHORD IAW B737-800 SRM53-70-51-2R-4 REPAIR 4. THIS IS A CAT A REPAIR. 2021-06-23
N529AS BOEING 737890 During INSP/MAINT - FLOORBEAM AT STATION 986 @R2 DOOR AREA CORRODED AT MOUNT FITTING. GROUNDED - YES. REMOVED DAMAGE PER B737-800 SRM 53-70-15 ORIG THICKNESS .040, MAT LOSS .015NEW THICKNESS .025, AREA OUT OF LIMITS PER B737-800 SRM 53-70-15. REMOVED WEB PER B737-800 SRM 51-40-02, INSTALLED P# 147A5712035 PO# 994829.1 SRM. 51-40-02 AND BAC DWG 147A5700. 2021-06-23
N529AS BOEING 737890 During INSP/MAINT - AFT CARGO DOOR LOWER CUT OUT HAS CORROSION STA.787 TO STA.847 AS MARKED.DOT:C570. GROUNDED - YES. REMOVED CORROSION FROMLOWER SILL UPPER WEB ORIG. THICKNESS 0.050, REMOVED 0.050, 100% MAT LOSS FOUND TO BE OUT OF LIMITS PER B737-800 SRM 53-60-15-1A-1; REMOVED AND REPLACED WEB PER B737-800 SRM 51-40-02 AND BAC DWG 146A8120 REV A.DOT REMOVED. 2021-06-11
N529AS BOEING 737890 During INSP/MAINT - MAIN CABIN AFT RIGHT HAND SIDE @ OR ABOUT STATION 1016 GALLEY MOUNT RAILCORRODED.DOT: N166. GROUNDED - YES. REMOVED CORROSION - ORIGINAL THICKNESS .050, REM0VED .025, REMAINING .025 AND FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-70-15. REMOVED AND REPLACED SUPPORT IAW B737-800 SRM 51-40-02 REF BAC DWG 147A5700REMOVED DOT. 2021-06-11
N529AS BOEING 737890 During INSP/MAINT - AFT WET AREA INTERCOSTAL HAS A GOUGE JUST FWD OF FLOORBEAM AT STA 967 RBL16 DOT N253DOT:N253. GROUNDED - YES. REMOVED CORROSION - ORIGINAL THICKNESS .080, REMOVED .025, REMAINING .055 AND FOUND TO BE OUT OF LIMITS IW B737-800 SRM 53-70-51-1A-1. REMOVED AND REPLACED INTERCOSTAL IAW B737-800 SRM 51-40-02 REF BAC DWG 147A5650.REMOVED DOT. 2021-06-11
N529AS BOEING 737890 During INSP/MAINT - AFT CARGO COMPARTMENT BILGE INT, FLOOR SUPPORT RAIL HAS CORROSION IN SEVERAL SPOTS, BS787-807, RBL13.84. GROUNDED - YES.REMOVED DAMAGED TRACK; FABRICATED NEW TRACK AND INSTALLED NEW TRACK PER B737-800 SRM 53-00-53-2R-3. BLENDED CORROSIONON TRACK AT BL-13.84. ORIG MAT 0.070; REMOVED 0.012; REMAINING 0.058 AND IS FOUND TO BE OUT OF LIMITS PER B737-800 SRM 53-00-53-1A-2. TOOL NR T82246. 2021-04-07
N529AS BOEING 737890 During INSP/MAINT - AFT PIT LEFT FLOOR TRANSITION PANEL HAS CORROSION THROUGHOUT BS727 -BS787. GROUNDED - YES. CUSTOMER REF. ONLY; SEE CUSTOMER CARDS G1553675, G153678, G1553679, G1553682AND G1553752 FOR MAT ORIG. LOSS AND REMAINING TRACKING PURPOSES. REMOVED LEFT TRANSITION PANEL FROM 727-787. FABRICATED AND INSTALLED NEW TRANSITION PANEL IAW B737-800 SRM 53-00-53-2R-5 REPAIR 5. 2021-04-07
N529AS BOEING 737890 During INSP/MAINT - CORROSION ON FLOORBEAM STA 947.5 JUST O/B OF LAV D INBOARD AFTMOUNT FITTING. DOT Z617. GROUNDED - YES. REMOVED CORROSIONIAW B737-800 SRM 53-70-51-1A.1. ORIG MAT. IS .180, REMAINING MAT IS .095. MAT LOSS OF .085 IS BEYOND ALLOWABLE LIMITS.REMOVEDUPPER T-CAP CHORD AND REPAIRED AREA IAW B737-800 SRM 53-70-51-2R-5 REPAIR ALTERNATIVE 2 AND ALASKA EA 800-53EA-23292 REV OO. THIS IS A CAT A REPAIR. 2021-04-02
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER PUSH, FO FD AMBER FLAG ILLUMINATED ALONG WITH MCP ALTITUDE GOING TO 50,000 AND COULD NOT BE MOVED. AFTER ENGINE START TO TAXI BACK IN, CONDITIONS RETURNED TO NORMAL. GROUNDED - YES. ELEC PWR SWITCHOVER - DFCS NO FAULT/FAULT HISTORY -DFCS AND FMCS R-T-S TESTS PASSED B737-800 AMM 22-11-00. 2021-03-25
N529AS BOEING 737890 During TAKEOFF - ON TAKEOFFROLL AFTER HITTING TOGA BUT BEFORE ENGINES WERE STABILIZED AT 2TK BUMP POWER, THE MASTER CAUTION LIGHT ILLUMINATED. AFTER A VERY QUICK SCAN OF THE OVERHEAD PANEL, CAPT ABORTED TAKEOFF. NO ASSOCIATED LIGHTS ON THE SIX-PACK AND NO LIGHTS ON OVERHEAD PANEL WERE OBSERVED. AFTER ABORTING T/O THE MASTER CAUTION LIGHTS EXTINGUISHED. GROUNDED - YES. FMC FFR LOGGED MULTIPLE RIGHT SIDE FAULTS ON LAST 3 LEGS. ACCOMPLISHED FMC BITE REF B737-800 AMM 34-61 TASK 801 WITH NO FAULTSFOUND. ACCOMPLISHED LAND VERIFY TEST REF AMM 22-11-00-700-801 WITH NO FAULTS FOUND. ALL TEST PASS. GROUND VERIFICATIONSUCCESSFUL. 2021-03-18
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER ENGINE START FOLLOWING MASTER CAUTION RECALL, THE CONT CABIN ZONE TEMP LITE ILLUMINATED. THIS LIGHT EXTINGUISHEDON MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED CONTROL CABIN TRIM AIR MODULATING VALVE REF B737-800 AMM21-61-21. LEAK CHECK AND OPS CHECK GOOD. GROUND VERIFICATION TEST SUCCESSFUL. 2021-03-08
N529AS BOEING 737890 During NOT REPORTED - APU FAILED TO START, MTX FAULT MESSAGE 49-31016. GROUNDED-YES. REMOVED AND REPLACED APU FUEL CONTROL UNIT, PER B737-800 AMM 49-31-11. OPERATIONS AND NO LEAKS NOTED. 2021-01-20
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER STARTING BOTH ENGINES, THE MESSAGE PWS FAIL APPEARED ON BOTH F/O AND CAPT WHEN F/O SELECTED WXR INSTEAD OF TERR.THEN WXR FAIL MESSAGE APPEARED AS WELL. AT ONE POINT DURING POWER SWAPS TO THE APU, THE ERROR MESSAGE RT APPEARED BELOWTHE WXR FAIL. GROUNDED-YES. INITIAL EVAL ON APU POWER, OPS NORMAL, NO FAIL MESSAGES. WXR SYSTEM OPS TEST NORMAL, B737-800 AMM 34-43-60-710-802-001. STARTED BOTH ENGINES, SWITCHED BETWEEN NR 1, NR 2 AND APU POWER SOURCES MULTIPLE TIMESWITH NO FAIL MESSAGES. ETOPS VERIFICATION AND REPAIR CONFIRMATION SUCCESSFUL, REF B737-800 FIM 34-43-TASK 802 FOR RT FAIL. 2020-11-04
N529AS BOEING 737890 During INSP/MAINT - REF TC N8010004 ITEM F(6). NR 1 ENG BLEED AIR CROSSOVER CHECK FAILED. GROUNDED-YES. ACCOMPLISHED GVI OF ENGINE BLEEDAIR DUCTS RELATIVE TO THE CORE FOR LOOSE SENSE LINES OR POSSIBLE LOOSE CLAMPS, NONE FOUND. ACCOMPLISHED TASK CARD NUMBER NG-36WC-00001 ENGINE BLEED AIR HEALTH CHECK, ALL TESTS PASSED. NO FAULTS FOUND 66641. REMOVED & REPLACED PRSOV, REFB737-800 AMM 36-11-04. LEAK & OPERATIONS CHECKS GOOD. PERFORMED ENGINE BLEED AIR CROSSOVER OPERATIONS TEST, PER AMM 36-11-00, ALL TESTS PASS. 2020-11-03
N529AS BOEING 737890 During INSP/MAINT - NR 2 ENGINE BLEED CHECK VALVE FAILED INSPECTION REF T/C: AD20201651-NG-36-2. GROUNDED-YES. REPLACED 5TH STAGE BLEED CHECK VALVE, PER B737-800 AMM 36-11-02. GROUND VERIFICATION SUCCESSFUL. 2020-10-23
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER PUSHBACK RT PACK ANNUNCIATED ON RECALL RESET AFTER PUSHING MASTER CAUTION. GROUNDED - YES. ACCOMPLISHED PACK/ZONETEMPERATURE CONTROLLER BITE TEST PER B737-800 AMM 21-61-00 AND HAD A TCV RED FAULT LIGHT. REMOVED & REPLACED RIGHT PACKTEMP CONTROL VALVE REF AMM 21-51-10-000-801 & AMM 21-51-10/401. OPS & LEAK TEST GOOD. COMPLETED AMM TASK 21-61-00-700-806-002, PACK ZONE TEMP CONTROLLER BITE TEST NO FAULTS NOTED. 2020-06-25
N529AS BOEING 737890 During NOT REPORTED - DURING MASTER CAUTION RECALL, AIR COND, MASTER CAUTION, AND LEFT PACK LIGHT ILLUMINATED. LIGHTS EXTINGUISH UPON NEXT PRESS OF MASTER CAUTION. GROUNDED - YES. REF B737-800 AMM 21-51-00 #1 PZTC FFR SHOWS "TCV THIS PACK" FAULT. RESET FAULT. FAULT DID NOT RETURN- BITE TEST #1 PZTC GOOD. FUNC CHECK LT PACK GOOD. CLEARED MEL 21-32B. 2020-05-19
N529AS BOEING 737890 During NOT REPORTED - #2 HF FAIL MESSAGE. GROUNDED - YES. PERFORMED #2 HF BITE REF B737-800 FIM 23-11 TASK 801. NO FAULTS FOUND CHECKS GOOD NOFAIL MSG ETOPS SIGNIFICANT SYS GROUND VERIFICATION SUCCESSFUL. 2020-05-01
N529AS BOEING 737890 During CRUISE - APU FAILED START AT FL 380 TWO TIMES. FAULT LIGHT ILLUMINATED DUE TO OVERTEMP. SUCCESSFUL CSS ACCOMPLISHED AFTER FAULT LIGHT EXTINGUISHED. GROUNDED - YES. PERFORMED APU BITE TEST, CURRENT STATUS NO FAULTS. FOUND FAULT IN HISTORY FOR AN OVERTEMP SHUTDOWN MAINT MSG 49-3106. STARTED APU, OPS CK GOOD. CHECKED AND RELEASED PER MEL 49-99A. APU CSS CAPABILITY IS COMPROMISED. REF L.P. 12058907. CSS SUCCESSFUL. CLEARS MEL 49-99A. 2020-04-22
N529AS BOEING 737890 During INSP/MAINT - APU OIL COOLER LEAKING FROM FINS. GROUNDED - YES. REMOVED AND REPLACED APU OIL COOLER REF B737-800 AMM 49-91-41 OPS CHECK LEAK CHECK GOOD. 2020-04-20
N529AS BOEING 737890 During INSP/MAINT - #1 ENG BITE SHOWS FAULT 73-20341 THE FMV POSITION SIGNAL IS OUT OF RANGE. SHORT TIME FAULT. DEFERRED PER T/C 78273000. GROUNDED - YES. PERFORMED ENG 1 BITE FOR FLT FAULTS. VERIFIED ALL FLTS 0-10 SHOW RECORDED FAULT OF 73-20341. PERFORMED B737-800 FIM 73-25 TASK 803 INITIAL EVALUATION EEC BITE TEST - FAILS FOR SAME FAULT. PERFORMED RESISTANCE CHECK OF HMU RECEPTACLE DP0601, PINS 16 TO 34 SHOWS 19.40 MEG OHM, SHOULD BE 36 TO 90 OHMS. REVERIFIED FOUND RESISTANCE AT EEC CONN DP0606 REF PAR (6) TABLE 207/208 PINS T TO U. READS SAME 19.40 MEG. REMOVED AND REPLACED #1 ENGINE HMU REF T/C N8473000. ACCOMPLISHED TESTS IAW B737-800 AMM 71-00-00-800-811-F00 TABLE 502. NO FAULTS NOTED - GROUND VERIFICATION REPAIR CONFIRMATI 2020-04-15
N529AS BOEING 737890 During INSP/MAINT - WHILE ACCOMPLISHED T/C # 78472010, FOUND #2 ENGINE FAN BLADE PLATFORM SEAL MISSING @ POSITION 16 AND 21. GROUNDED - YES.REMOVED AND REPLACED #2 ENGINE FAN BLADE PLATFORM @ POSITION 16 AND 21 REF T/C # 78472010. 2020-04-07
N529AS BOEING 737890 During INSP/MAINT - WHILE ACCOMPLISHING T/C # 78472010 FOUND #2 ENGINE FAN BLADE SPACER @ POSITION 16 SEAL DISBONDED. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE FAN BLADE SPACER @ POSITION 16 REF T/C # 78472010. 2020-04-07
N529AS BOEING 737890 During TAXI/GRND HDL - ON PREFLIGHT #1 HF RADIO "FAIL" LIGHT. GROUNDED - YES. FAULT CLEARED. HF 1 ETOPS GROUND VERIFICATION TEST OPS CKS NORMALPER B737-800 AMM 23-11-00-710-801. 2020-03-27
N529AS BOEING 737890 During CLIMB - APPROACHING TOP OF CLIMB, CABIN TEMP BECAME DIFFICULT TO CONTROL (TOO HOT) RT PACK LIGHT ILLUMINATED. AFTER COMPLETING QRH PROCEDURE AND CONFIGURING FOR SINGLE PACK OPS, TEMPS RETURNED TO NORMAL. GROUNDED - YES. #2 PZTC FAULTED TCV. R AND RTCV AND CHECKED OK. IAW B737-800 AMM 21-51-10 PB 400. 2020-02-20
N529AS BOEING 737890 During APPROACH - DURING VISUAL APPROACH - F.O PFD HAD NO COMMAND BARS - RECYCLED FLIGHT DIRECTOR SWITCHES. STILL NO COMMAND BARS - RA. FLAG ALSO CYCLED ON AND OFF. GROUNDED - YES. ACCOMPLISHED FIM 22-11 TASK 805. DUE TO THE #2 RA TRANSCEIVER REPLACEMENT, FOLLOWED FIM & REMOVED & REPALCED FCC-B. REF AMM 22-11-33. INSTALLATION TEST FAILED FCC-B. MSG22-11348. REMOVED & REPLACEDBUS POWER CONTROL UNIT. REF AMM 24-41-21 & FIM 22-15 TASK 803. ALL TESTS PASS. RE-ACCOMPLISHED DFCS LRU REPLACEMENT TEST. ALL TESTS PASS. AIRCRAFT REMAINS HGS & AUTOLAND CAPABLE. 2020-02-18
N529AS BOEING 737890 During CRUISE - INFLIGHT CA VTK APPEARED-FIXED ITSELF; GPS#2 SIGNAL LOST- NEVER REGAINED. F/O CLOCK INOP; MAIN ENTRY LT APPEARED TURN INTO GATE; F/O HEADSET JACK INOP IRS ON RECALL AFTER VTK. GROUNDED - YES. CYCLE AIRCRAFT POWER FOR SYS RESET. AFTER POWERBACKUP ALL SYS BACK TO NORMAL. PERFORMED FMCS BITE PROCEDURE PER FIM 34-61 TASK 801 FOUND NO FAULT FOR BOTH FMC. PERFORMED MAIN ENTRY DOOR OPS CHK PER AMM 52-11-00 ALL WORKS NML.PERFORMED F/O HEADSET OPS. CHECK PER AMM 23-50-00 ALL NML. AIRCRAFT OK FOR SERVICE. 2020-02-03
N529AS BOEING 737890 During INSP/MAINT - #1 ENG BLADE NR 1 CUNI DAMAGE BEYOND LIMITS. GROUNDED - YES. REPLACED THE NUMBER 1 BLADE AND NUMBER 13 BLADE ON THE NR1 ENGINE IAW TC 78472010. 2020-01-27
N529AS BOEING 737890 During TAXI/GRND HDL - DURING CARGO TEST DETECTOR FAULT ILLUMINATES. GROUNDED - YES. ACCOMPLISHED B737-800 FIM 26-16 TASK 804 AND FORWARD CARGOELECTRONIC UNIT BITE REFERENCE FIM 26-16 TASK 801. BITE TEST PASS WITH NO FAULTS. PERFORMED FORWARD CARGO BAY SMOKE DETECTION OPERATIONAL TEST REFERENCE B737-800 AMM 26-16-00-710-801. OPS TEST PASS. 2020-01-10
N529AS BOEING 737890 During NOT REPORTED - FAULT LIGHT ILLUMINATED AFTER ATTEMPTING TO START THE APU. GROUNDED - YES. REMOVED & INSTALLED NEW IGNITER PLUG LEAD, OPS CHECK GOOD, PER B737-800 AMM 49-41-52. REMOVED & INSTALLED NEW IGNITER PLUG, OPS CHECK GOOD, PER AMM 49-41-51.REMOVED& INSTALLED NEW IGNITION UNIT, OPS CHECK GOOD, PER AMM 49-41-31. 2020-01-06
N529AS BOEING 737890 During INSP/MAINT - EMERGENCY LIGHT EXIT LOCATOR SIGN ON #4 GALLEY ADJACENT TO R-2 DOOR IS BROKEN. GROUNDED - YES. REMOVED, REPLACED, AND TESTED EXIT LOCATOR SIGN ASSY PER AMM 33-51-01-960-802 - OPS NORMAL. 2019-12-10
N529AS BOEING 737890 During INSP/MAINT - 1 ENGINE HAS REPORTS OF OIL DRIPPING THE THE AFT FLAME ARRESTOR AFTER SHUTDOWN. NO ADDITIONAL EXTENSIONS. GROUNDED - YES. FOUND WEAR ON THE ON OIL INLET COVER SILVER ABRADABLE COATING BEYOND LIMITS. REPLACED OIL INLET COVER REF B737-800 AMM72-56-00. STEP 3 OF TSR INSPECTED VENT TUBE SEAL TEETH. MEASUREMENT WHERE WITHIN LIMITS. NO DEFECTS NOTED REF AMM 72-55-00. STEP 4 OF TSR REPLACED OIL INLET COVER REF AMM 72-56-00. NO LK'S NOTED. 2019-11-19
N529AS BOEING 737890 During INSP/MAINT - APU BITE TEST SHOWS MAINT MSG 49-11019: DC POWER LOSS SHUTDOWN POWER INTERRUPT. GROUNDED - YES. PERFORMED FIM 49-10 TASK801 FOUND FAULT TO BE INTERMITTENT. APU START AND OPERATIONS CHECK NORMAL REF AMM 49-11-00. 2019-11-18
N529AS BOEING 737890 During INSP/MAINT - REF T/C N842001. DURING GVI, FOUND DAMAGE AT J9 HARNESS, DP0905 CONNECTOR FOR T3 PROBE CHA ON #2 ENGINE (802157). GROUNDED - YES. REF AMM 70-70-01-350-801-F00. REPAIRED HARNESS CONNECTOR DP0905 #2 ENGINE TEMPORARY REPAIR UNTIL NEXT ENGINE SHOP VISIT. 2019-11-18
N529AS BOEING 737890 During NOT REPORTED - NUMBER TWO HF RADIO RECEIVES BUT WILL NOT TRANSMIT. WE GET A VERY LONG SIDE TONE AS RADIO TRIES TO TUNE, BUT THEN NO TRANSMIT. WE HAD A GOOD INCOMING SELCAL CHECK ON NUMBER TWO JUST NO TRANSMIT. GROUNDED - YES. REPLACED #2 HF TRANSCEIVER PER AMM 23-11-21, OPS CHECK GOOD. 2019-11-08
N529AS BOEING 737890 During NOT REPORTED - LT PACK LIGHT IS ILLUMINATED. EXTINGUISHES ON RECALL. GROUNDED - YES. PERFORMED PACK/ZONE TEMPERATURE CONTROLLER BITE TEST REF B737-800 AMM 21-61-00-700-806-002 ON BOTH PACK ZONE TEMP CONTROLLERS, NO FAULTS FOUND ON BITE, PREVIOUS FLIGHT ORVERIFY TESTS. OK FOR CONTINUED SERVICE. 2019-10-30
N529AS BOEING 737890 During TAXI/GRND HDL - L PACK STAYED ILLUMINATED ON MASTER RECALL. GROUNDED - YES. FAULT RESETS WITH MC RESET, RETURNS ON MC RECALL. CHECKED. NO HISTORY. #1 PACK/ZONE TEMP CTRLR SHOWS, "TCV THIS PACK". RESET FAULT. FAULT DID NOT RETURN. VERIFY TEST PASSES. BITE TEST #1 PACK/ZONE TEMP CTRLR GOOD. REF B737-800 FIM 21-62 TASK 801. FUNC CHECK SAME TCV GOOD. 2019-09-27
N529AS BOEING 737890 During INSP/MAINT - AFT CARGO RT FLOOR TO SIDE TRANSITION PANEL IS CORRODED FROM STATION 727D TO STATION 787. GROUNDED - YES. REMOVED CORR FROM AFT CARGO RT FLOOR TO SIDEWALL TRANSITIONAL PANEL FROM STA 727D-767 FOUND TO BE OUT OF LIMITS IAW SRM 53 00 53 1 A2FABRICATED AND INSTALLED NEW PANEL IAW SRM 53 00 53 2R 6 CORR FROM STA 767 - 787 FOUND TO BE WITHIN LIMITS IAW SRM 53 6015 1A 1 TREATED AND PRIMED AREA IAW SRM 53 60 15 1A 1 W 3 O .040 R .010 L 180 D .030. 2019-09-18
N529AS BOEING 737890 During TAXI/GRND HDL - FORWARD DOOR (L1) HINGE COVER BROKEN OFF & DOOR WILL NOT OPEN. GROUNDED - YES. REMOVED OUTER UPPER HINGE COVER ON L-1 DOOR FOR ACCESS. FOUND GUIDE ARM PIN KEY WASHER RETENTION SCREW SHEARED ALLOWING GUIDE ARM PIN TO MIGRATE OUT AND GET JAMMED AGAINST UPPER CAM TRACK, STOPPING DOOR FROM OPENING. REMOVED AND REPLACED GUIDE ARM PIN, KEY WASHER, AND RETENTION SCREW REF B737-800 AMM 52-11-21. INSTALLED UPPER HINGE COVER ON L-1 DOOR REF AMM 52-11-00-820-801. THIS CLEARS MCT. 2019-09-09
N529AS BOEING 737890 During NOT REPORTED - ALL THREE ZONE TEMP CONTROLS IN AUTO ARE "HYPER" SENSITIVE. SLIGHTEST ADJUSTMENT SPIKES TEMPERATURE HOT OR COLD. SUSPECTFILTERS OVER TEMP SENSORS DIRTY. GROUNDED - YES. PERFORMED BITE CK OF BOTH CONTROLLERS. NO DEFECT REF B737-800 FIM 21-62 TASK 801. CLEANED ALL ZONE TEMP SENSOR FILTERS REF B737-800 AMM 21-61-06-000-801 AND 21-61-06-100-801. COMPLETED FIM TASKS 21-61 863 AND 864. NO DEFECT ALL CHECKS GOOD. 2019-09-06
N529AS BOEING 737890 During NOT REPORTED - ON ATTEMPTED START OF APU, APU FAULT LIGHT CAME ON. GROUNDED - YES. REF FIM 49-40 TASK 803 FOR APU TROUBLESHOOTING. PERFORMED APU BITE PROCEDURE PER SECTION E(1) OF FIM. NO CURRENT FAULTS. PERFORMED START OF APU. NO DEFECTS NOTED. NO CURRENT FAULTS. NO OTHER RELATED MAINTENANCE MESSAGES AT THIS TIME. PERFORMED CHECK OF APU BATTERY SYSTEM PER SECTION F(2) OFFIM, NO DEFECTS NOTED. INSPECTED APU MAG DRAIN PLUG PER SECTION F(3) OF FIM, NO DEFECTS NOTED. PERFORMED 4 START AND SHUTDOWN CYCLES OF APU WITH NO DEFECTS OR FAULTS NOTED. APU FAULT LIGHT DID NOT ILLUMINATE. OPS CHECK GOOD AT THIS TIME. THIS CLEARS MEL 49-1B. 2019-09-04
N529AS BOEING 737890 During LANDING - ON SHORT FINAL TO LAND LT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. WHCU SHOWS NO FAULT. NO HISTORY. SYS OPS OK. 2019-08-28
N529AS BOEING 737890 During DESCENT - DURING DESCENT THRU 5,000 FEET, LEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. C/W WHCU BITE CK SHOWED CURRENT SENSOR FAULT ALSO ALL LEGS SENSOR FAULT. MEASURED SENSOR #2 CURRENTLY CONNECTED MEASURED VARIOUS VALUES WHILE TESTING FINALLY READING 778 TO 1 K OHMS WHICH IS OUT OF LIMIT. SENSOR NOT IN USE #1 READING 278 OHM WHICH IS OUT OF LIMIT. WINDOW RESISTANCE IS 55.18 OHMS. REF B737-800 FIM 30-41 TASKS 801 AND 811. REQUIRES WINDOW REPLACEMENT. REMOVED AND REPLACED AND OPS CKD L/H #2 WINDOW REF B737-800 AMM 56-12-11. CLEARS MEL 30-11E. 2019-08-28
N529AS BOEING 737890 During INSP/MAINT - DURING #2 ENGINE FAN BLADE LUBE #1,11,13,14,15,22, AND 24 PLATFORMS SEALS WORN BEYOND LIMITS. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE FAN BLADE #1,11,13,14,15,22 AND 24 PLATFORMS IN REF. WITH T/C 78472010. 2019-08-28
N529AS BOEING 737890 During INSP/MAINT - DURING #2 ENGINE FAN BLADE LUBE. #1,3,6,9,10,12,13,14,15,17,19,20,21,22, AND 24 SPACERS ARE DISBONDED. GROUNDED - YES. REMOVED AND REPLACED #2 ENGINE FAN BLADE #1,3,6,9,10,12,13,14,15,17,19,20,21,22 AND 24 SPACERS PER T/C 78472010. 2019-08-28
N529AS BOEING 737890 During NOT REPORTED - WITH LIGHT SWITCH IN DIM AND OFFSET INL COURSE THE "OFST" LIGHT BLINKS OFF/ON WITH STEADY BEAT. IF "EXEC" BUTTON LIGHT BEHAVES SAME. CAPT FMC ONLY. GROUNDED - YES. UNABLE TO DUPLICATE "OFST" AND "EXEC" BUTTON BLINKING. PERFORMED CDU LAMP TEST PER AMM 34-61-01-710-801. OPS CHECK GOOD. 2019-08-20
N529AS BOEING 737890 During TAXI/GRND HDL - PILOT SLIDING WINDOW VERY HARD TO OPEN AND CLOSE. GROUNDED - YES. DURING L-2 WINDOW INSPECTION FOUND DEBRIS ON WINDOW TRACK, REMOVED DEBRIS AND FOUND L-2 WINDOW TO OPERATE NORMAL IAW AMM 56-12-11-710-803. 2019-08-16
N529AS BOEING 737890 During NOT REPORTED - HF NR 2 FAIL ANNUNCIATED. GROUNDED - YES. NR 2 HF TRANSCEIVER WILL NOT TEST. REMOVED & REPLACED NR 2 HF TRANSCEIVER REFAMM 23-11-21/400-801 & OPS CKS GOOD. ETOPS GROUND VERIFICATION GOOD. 2019-07-29
N529AS BOEING 737890 During NOT REPORTED - CONT. CAB ZONE TEMP ILLUMINATED DURING MASTER CAUTION RECALL. GROUNDED - YES. ACCOMPLISHED CONTROLLER BITE (#2 PACK) PER21-62 TASK 801. PREVIOUS FLT FAULT IS "FLT DECK TRIM VALVE". ACCOMPLISHED #2 CONTROLLER B737-800 FIM 21-62 TASK 832. FAULT CLEARED. RAN PACKS. NO FAULTS. 2019-07-24
N529AS BOEING 737890 During INSP/MAINT - UPON REMOVAL OF R/H PRIMARY HEAT EXCHANGER & PLENUM ASSY FOUND R/H SECONDARY HEAT EXCHANGER PLENUM DELAMINATED ALSO. GROUNDED - YES. REMOVED AND REPLACED R/H SECONDARY HEAT EXCHANGER PLENUM REF B737-800 AMM 21-51-03. COMPLETED OPS AND LEAKCK GOOD. 2019-07-19
N529AS BOEING 737890 During INSP/MAINT - WHILE ACCOMPLISHING METALLIC/HYBRID VSV SYSTEM BORESCOPE INSPECTION (REF TASK CARD SBCFM 56-7B-72-0986-1) FOUND THE NR 3STAGE 9 O'CLOCK SLAB SIDED PIN TO BE ROTATED AND MIGRATING OUT. GROUNDED - YES. REMOVED AND REPLACED NR 2 ENGINE REF W/O 430266. 2019-07-16
N529AS BOEING 737890 During NOT REPORTED - CONT CAB ZONE TEMP LIGHT ON EXTINGUISHES ON RECALL. GROUNDED - YES. REF B737-800 FIM 21-61 TASK 861. NO FAULTS ON #1 OR#2 PACK TEMP CONTROLLERS. OPERATED PACKS FOR 1 HR, NO ISSUES DETECTED. TEMP INCREASED AND DECREASED AS COMMANDED. TEMP FAN OPERATED NORMAL. CONTROL CABIN FILTER WAS DIRTY. CLEANED FILTER, SENSOR AND FAN. OPS TEST NORMAL. 2019-07-11
N529AS BOEING 737890 During NOT REPORTED - CONT CAB ZONE TEMP ILLUMINATED ON RECALL. RESETS WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED BITE OF #1 PACK TEMP CONTROLLER NO FAULTS FOUND REF B737-800 FIM 21-62 TASK 801. 2019-07-10
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE DISPLAYED DURING PRE-FLIGHT. GROUNDED - YES. ACCOMPLISHED FMC BITE, REF FIM 34-61-00-810-801 - NO FAULTS NOTED - FMC DISAGREE LIGHT NO LONGER ILLUMINATES. 2019-07-08
N529AS BOEING 737890 During NOT REPORTED - THE RADAR CONTINUOUSLY PAINTS RETURNS AT THE NINE AND THREE O'CLOCK POSITIONS 8 MILES OUT. IT ALSO PAINTS RETURNS FROM 80 TO 160 NM OUT THAT ARE NOT THERE CONTINUOUSLY. GROUNDED - YES. PERFORMED WXR SYSTEM BITE TEST PER FIM 34-43 TASK 801,TEST PASSED. PERFORMED WXR SYSTEM OPS TEST AMM 34-43-00-710-802-001 & WX SYSTEM-SYSTEM TEST AMM 34-43-00-710-802-401, BOTH TEST PASSED. WXR SYSTEM WORKS NORMAL, UNABLE TO DUPLICATE THE DISCREPANCY. 2019-07-02
N529AS BOEING 737890 During NOT REPORTED - "SPEED TRIM FAIL" LIGHT ILLUMINATED UPON RECALL. LIGHT EXTINGUISHES UPON RESET. GROUNDED - YES. VERIFIED FAULT, DFCS FAULT REVIEW SHOWS MSG STAB TRIM CLUTCH FCCB (J1C-H03). ACCOMP DFCS BITE CURRENT STATUS NO FAULTS. ACCOMP REPAIR CONFIRMATION ALL TEST PASS REF FIM 22-13 TASK 817. ACCOMP LLM TEST, TEST PASS REF AMM 22-11-31-839-001. 2019-06-25
N529AS BOEING 737890 During CRUISE - IN CRUISE (LNAV/ VNAV) FO "VTK" ON ND. AFTER 45 SECONDS CAUTION DISAPPEARED AND NORMAL OPS/ INDICATIONS RETURNED. GROUNDED - YES. PERFORMED FIM 34-61 TASK 836. NO FAULTS/FAILS. FMC CHECK OK. OK FOR SERVICE. 2019-06-17
N529AS BOEING 737890 During NOT REPORTED - MID CABIN EMERGENCY EXIT SIGN FELL DOWN. GROUNDED - YES. RESECURED MID CABIN EMERGENCY EXIT SIGN REF AMM 33-51-01-960-801. NO FURTHER DEFECTS NOTED. 2019-06-03
N529AS BOEING 737890 During INSP/MAINT - NR 2 ENGINE FUEL SERVO HEATER WAS LEAKING AT IDLE. ACFT GROUNDED. REMOVED THE NR 2 ENG FUEL HEATER SERVO IAW AMM 73-11-07-000-801. INSTALLED SERVICEABLE FUEL SERVO HEATER IAW AMM 73-00-07-400-801, PARAGRAPH, E, F, AND G. IDLE LEAK CHECKEDAND PASSED. 2019-05-29
N529AS BOEING 737890 During INSP/MAINT - FOUND SEVEN BLADES WAS MISSING CU-NI-IN COATING, OUT OF LIMITS. BLADES NR 1, 2, 3, 4, 16, 17, AND 21. ACFT GROUNDED.REMOVED AND REPLACED THE BLADES. 2019-05-28
N529AS BOEING 737890 During NOT REPORTED - HF 1 FAILED. ACFT GROUNDED. ACCOMPLISHED A NR 1 HF COMMUNICATIONS BITE IAW AMM 23-11-00-810-801. NO DISCREPANCIES NOTED, HF INDICATION ON CONTROL PANEL NORMAL. 2019-05-24
N529AS BOEING 737890 During CRUISE - HF 1 TRANSMITTER INOPERATIVE. HF1 WILL RECEIVE ALERTS AND CAN HEAR COMMUNICATION. CANNOT TRANSMIT. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 HF COUPLER IAW AMM 23-11-61. 2019-05-21
N529AS BOEING 737890 During NOT REPORTED - OVERHEAT LIGHT ON LEFT FORWARD WINDSHIELD. GROUNDED - YES. BITE CHECKED LT FWD WHCU REF FIM 30-41 TASK 801. FAULTS SENSOR. SWAPPED TO SPARE SENSOR USING S1078, STILL FAILS WINDOW SENSOR REF WDM 30-41-11. REMOVED L1 WINDOW REF AMM 56-11-11-000-801. PERFORMED LEAK TEST AND BONDING CHECK, BOTH TEST GOOD. 2019-05-20
N529AS BOEING 737890 During NOT REPORTED - NR 1 HF UNABLE TO TRANSMIT, BUT RECEIVES OK. SELCAL IS OK. DOES NOT TRANSMIT ON YOKE OR PANEL PTT. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 HF COUPLER AND NR 1 HF TRANSCEIVER IAW AMM 23-11-21, & AMM 23-11-61. 2019-05-17
N529AS BOEING 737890 During NOT REPORTED - LEFT PACK WARNING ON RECALL. ACFT GROUNDED. HAD A LT TCV FAULT, REMOVED AND REPLACED THE LEFT TEMPERATURE CONTROL VALVE IAW AMM 21-51-10-401, LEAK AND OPS CHECKED GOOD. 2019-05-13
N529AS BOEING 737890 During NOT REPORTED - #1 HF WOULDN'T TEST. IT GOT STUCK IN THE TUNING PHASE. GROUNDED - YES. NOTE: HF 1 STARTED HAVING PROBLEMS AFTER PERFORMING MAINTENANCE ON HF 2. REF MM 23-11-61, 23-11-21, AND WDM 23-15-11 FOR TROUBLESHOOTING AND MAINTENANCE ACCOMPLISHED. CONFIRMED HF 2 WORKING AND HF 1 NOT WORKING. PERFORMED HF 1 TEST IN THE FOLLOWING CONFIGURATIONS: REMOVED HF 2 COUPLER. HF2 COUPLER OFF AND HF 2 TRANSCEIVER ON- HF 1 TEST FAIL. REMOVED HF 2 TRANSCEIVER. HF 2 COUPLER OFF AND HF 2 TRANSCEIVEROFF- HF 1 TEST PASS. REPLACED HF 2 TRANSCEIVER. HF 2 COUPLER OFF AND NEW HF2 TRANSCEIVER ON- HF 1 TEST PASS. INSTALLED HF 2 COUPLER. HF 2 COUPLER ON AND NEW HF 2 TRANSCEIVER ON- HF 1 TEST FAIL. REPLACED HF 2 COUPLER. NEW HF2 COUPLER ON AND 2019-05-08
N529AS BOEING 737890 During NOT REPORTED - NO ATC BUTTON ON CAPTAIN'S CDU. ACFT GROUNDED. REPLACED THE CAPTAIN'S MCDU KEYBOARD. OP CHECKED NORMAL IAW AMM 34-61-01-000-801, & 34-61-01-400-801. 2019-05-02
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER PLACING NR 1 FUEL SHUTOFF TO CUTOFF, AS ENGINE SHUTDOWN THE EGT SHOWED "ENGINE FAIL" FOR SEVERAL MINUTES THEN FINALLY CLEARED. GROUNDED - YES. PER FIM 73-05 TASK 805. DEU INPUT MONITORING TEST SHOWS INTERMITTENT FAILURES ON BOTH DEU 1AND 2 INSERT A AND B. REMOVED AND REPLACED ENG 1 START LEVER RELAY (CH A) R566. 28VDC CHECKED GOOD AT RECEPTACLE INPUTMONITORING TEST STILL FAILS. ISOLATED A HIGH RESISTANCE TO ENG 1 START LEVER CH A CUTOFF SWITCH (S1024) PER FIM 73-05 TASK 805 AND WDM 76-21-11 PG3. REMOVED AND INSTALLED NR 1 ENG START BRAKE ASSY (M1824) THROUGH STEP F (5)(D)(7) PER AMM 76-11-10-420-801-F00. 2019-04-30
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER ENGINE START, ELEC. LIGHT ON OVH PANEL ILLUMINATED. GROUNDED - YES. AUX BATTERY CHARGER POPS BREAKER, REMOVED ANDREPLACED AUX BATTERY CHARGER IAW 24-31-31-401, OPS CHECK GOOD IAW AMM 24-31-31-501. BATTERIES, MAIN AND AUX WERE DISCONNECTED FOR MAINTENANCE, RE-CONNECTED AND OPS CHECK GOOD IAW AMM 24-31-11-401. 2019-02-12
N529AS BOEING 737890 During INSP/MAINT - WHILE ACCOMPLISHING T/C 78273000 FOUND ENG 2 LONG TIME FAULT MSG 75-10392 THE VSV POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. FAULT ON ENGINE NR 2 FOUND AND CONFIRMED ON LEGS 1-4 AND 6-10. EEC TEST SHOWS NO ACTIVE FAULTS. VSV ACTUATORRESISTANCE AND WIRING CHECKS WITHIN TOLERANCES REF FIM 75-31 TASK 803. REMOVED AND REPLACED NR 2 ENG RT VSV REF AMM 75-31-01-000-802-F00/75-31-01-400-802-F00. VSV ACTUATOR LEAK TEST PASSED NO LEAKS NOTED. REF AMM 75-31-01-790-801-F00. ACCOMPLISHED TEST 3A, 12 & BITE C/K. NO FAULTS OR LEAKS NOTED. 2019-01-29
N529AS BOEING 737890 During CRUISE - CAPTAIN FLYING WITH MA AND A AUTOPILOT ON. WHILE FLYING AT FL 380 MOMENTARY LOSS OF LEFT FMC FOR 30 SECONDS. VTK FLAGGEDON CAPTAINS MAP AND LNAV/VNAV DISENGAGED. LEFT FMC RESTORED ITSELF IN APPROXIMATELY 30 SECONDS. ACFT GROUNDED. PERFORMED FIM 34-61-00-810-836. LEFT FMC OPS NORMAL. INTERMITTENT FAULT IAW FIM. PERFORMED FIM 34-61-00-810-801. FMCS BITE. BITE TEST OK. 2019-01-07
N529AS BOEING 737890 During CRUISE - HAD WHAT APPEARED TO BE AN INTERMITTENT L FMC FAILURE. HAD "VTK" ANNUNCIATED ON CAPTAINS SIDE, 2ND MAP FAILURE FLAG ON BOTH CA AND FO NDS. SITUATION CORRECTED ITSELF BEFORE WE COULD EVEN PICK UP THE QRH. AIRCRAFT WAS APPROX 80 MILES WEST OFJOT VOR FL350. GROUNDED - YES. PERFORMED FIM 34-61 TASK 836 SYS OPS CK NORMAL. 2018-12-14
N529AS BOEING 737890 During TAXI/GRND HDL - DURING TAXI IN, MASTER CAUTION FOR THE CAPTAIN`S PITOT ILLUMINATED. ACFT GROUNDED. REMOVED AND REPLACED THE CAPTAIN'SPITOT PROBE IAW AMM 34-11-01, OPS AND LEAK CHECKED GOOD. 2018-12-12
N529AS BOEING 737890 During NOT REPORTED - V SPEED WINDOW ON MCP BLANK W/ TWO DOTS. GROUNDED - YES. REMOVED AND REPLACED DFCS MODE CONTROL PANEL PER AMM 22-11-34-000-801 / AMM 22-11-34-400-801. PERFORMED MODE CONTROL PANEL INSTALLATION TEST (DFCS GROUP 32) PER AMM 22-11-34-740-801 -ALL TESTS PASS. 2018-12-04
N529AS BOEING 737890 During INSP/MAINT - RT SIDE PRIMARY HEAT EXCHANGER PLENUM DELAMINATED. GROUNDED - YES. REMOVED AND REPLACED R/H PRIMARY HEAT EXCHANGER PLENUM REF AMM 21-51-03. COMPLETED OPS AND LEAK CK GOOD. 2018-12-04
N529AS BOEING 737890 During INSP/MAINT - OUTSIDE R2 EMERGENCY LIGHT INOP. GROUNDED - YES. RELAMPED OUTSIDE R2 EMERGENCY LIGHT REF AMM 33-51-04-960-801. 2018-11-27
N529AS BOEING 737890 During INSP/MAINT - NR 2 ENGINE HAS REPORTS OF OIL DRIPPING THE AFT FLAME ARRESTOR AFTER SHUTDOWN. GROUNDED - YES. ACCOMPLISHED STEPS 1 THRU4 OF TSR. FOUND OIL INLET COVER SILVER ABRAIDABLE COATING WORN. REMOVED AND REPLACED OIL INLET COVER ON NR 2 ENGINE REFAMM 72-56-00. PERFORMED LEAK CHECK NO LEAKS NOTED. TSR COMPLETE. 2018-11-27
N529AS BOEING 737890 During NOT REPORTED - LEFT FORWARD WINDOW OVERHEAT LIGHT ILLUMINATED WHEN SWITCH WAS ON. COMPLIED WITH QRH PROCEDURES. LIGHT STILL ILLUMINATED. ACFT GROUNDED. WHCU BITE IAW FIM 30-41 TASK 801, WINDOW SENSOR ILLUMINATED. ACCOMPLISHED FIM 30-41 TASK 812 SWITCHED TO SECONDARY SENSOR OPS CHECKED NORMAL. 2018-11-14
N529AS BOEING 737890 During INSP/MAINT - L1 DOOR HARD TO CLOSE. GROUNDED - YES. FOUND L1 DOOR GUIDE ARM OUT OF ADJUSTMENT, ADJUSTED L1 DOOR GUIDE ARM REF AMM 52-11-00-820-801 STEP 2 H & ACCOMPLISHED FORWARD ENTRY DOOR SYSTEM TEST & TESTED GOOD REF AMM 52-11-00-700-804. 2018-11-14
N529AS BOEING 737890 During CRUISE - HYD A SYSTEM ENG 1 LOW PRESSURE LIGHT ILLUMINATED. GROUNDED - YES. AIR TURNBACK - DIVERSION 61 MINUTES. FOUND SIGNIFICANT LEAK FROM NR 1 ENG HYDRAULIC A SYS. OPENED COWLING AND LEAK WAS FROM EDP CASE DRAIN, BLEED RESERVOIR PRESSURE TO STOPRESIDUAL LEAKAGE. REMOVED AND REPLACED NR 1 ENGINE EDP, LEAK AND OPS CHECK GOOD REF AMM 29-11-11. 2018-10-17
N529AS BOEING 737890 During INSP/MAINT - PER T/C 78243000 - FOUND ON NR 2 ENGINE A FAULT 77-10842 TOP RIGHT EGT SIGNAL T495S1 OUT OF RANGE - ECONOMIC FAULT. GROUNDED - YES. DEFERRED PER T/C 78273000 FOR 500 FLT HOURS. REF FIM 77-21 TASK 801 FOR TROUBLESHOOTING. NO FAULTS ON "RECENT FAULTS" NO FAULTS ON "HISTORY" EEC TEST PASSED. TEMPERATURES SHOW NORMAL. INITIAL EVALUATION NO FAULTS. THIS CLEARS PLT DEFERRAL. 2018-10-04
N529AS BOEING 737890 During NOT REPORTED - ON RECALL, MASTER CAUTION RESET LIGHT & AIR COND LIGHTS ILLUMINATED AS WELL AS LEFT PACK. WITH RESET INITIATED, ALL ILLUMINATED LIGHTS EXTINGUISHED. NO OTHER INDICATIONS. LEFT PACK WORKED FINE. ACFT GROUNDED. PERFORMED A PACK/ZONE TEMP CONTROL BITE TEST IAW AMM 21-51-00. BITE CHECKED GOOD, NO DEFECTS NOTED. 2018-10-03
N529AS BOEING 737890 During INSP/MAINT - NR 1 ENGINE S/N 802957 FAILED HYBRID METALLIC BORESCOPE T/C SBCFM-56-7B-72-09-86-1, THIRD STAGE VSV SLAB HEAD PIN AT 9 OCLOCK ROTATED 90 AND MIGRATING. PICTURES ON SERVER, INITIATED MIG 2C S/N 40-0005141. GROUNDED - YES. REMOVED AND REPLACED NR 1 ENGINE REF T/C 78471001. 2018-10-02
N529AS BOEING 737890 During TAXI/GRND HDL - FOLLOWING BOTH ENGINES START, NR 2 GENERATOR WOULD NOT COME ON LINE. ACFT GROUNDED. PERFORMED FIM 24-21, TASK 816, DIST/BUS FAULT FOR GCU 2, FAULT ISOLATION AND NR 2 GENERATOR CAME ON LINE, NO MAINTENANCE FAULTS NOTED AND HAS NO HISTORYLAST 90 DAYS GROUND VERIFICATION SUCCESSFUL. 2018-09-25
N529AS BOEING 737890 During CLIMB - HUGE SPIKE IN CABIN RATE OF CLIMB OVER 1100 FPM NEAR TOP OF CLIMB FL360. RATE FLUCTUATION +/- 500 FPM AT TOP OF DESCENT.GROUNDED - YES. PERFORMED FIM 21-31 TASK 801, NO FAULTS, TASK 818, NO FAULTS, AND FIM 21-33 TASK 802, NO FAULTS. NO FAIL LIGHTS. 2018-07-27
N529AS BOEING 737890 During INSP/MAINT - DURING T/C 78472002 ON THE NR 2 ENGINE, FOUND BLADES 5, 6, 8, 12, 17, 23 & 24 CU NI IN COATING MISSING BEYOND X ON THECONVEX SIDE. THE BLADES NR 1 & 10 CU NI IN COATING MISSING BEYOND X ON THE CONCAVE SIDE. ACFT GROUNDED. INSTALLED THEFAN BLADES IAW T/C 78472002. 2018-07-11
N529AS BOEING 737890 During NOT REPORTED - OPS TEST HF1 + HF2. HF2 OPS GOOD. HF1 BAD - NO RECEPTION, NO STATIC. GROUNDED - YES. ON DEFERRAL. PULLED C/B FOR HF NR 2. HF NR 1 STILL UNABLE TO TRANSMIT. REMOVED TRANSCEIVER NR 1 IAW AMM 23-11-21. REINSTALLED TRANSCEIVER NR 1 IAW AMM 23-11-21. HF NR 1 STILL FAILS TO TRANSMIT PROPERLY AND RECEPTION IS POOR EVEN WITH RF SENSITIVITY ADJUSTMENT. WITH TRANSCEIVERS SWAPPED, STILL UNABLE TO TRANSMIT/ REACH SFO. REINSTALLED NR 2 TRANSCEIVER IN ITS ORIGINAL POSITION REF AMM 23-11-21-400-801. ACCOMP HF COMM OPS TEST REF AMM 23-11-00-710-801. OPS CK GOOD. ACCOMP HF COMM SYS- SYS TEST REF AMM 23-11-00-730-801. UNABLE TO REACH SFO BUT OPS CK GOOD FROM A/C TO A/C PER THE AMM. 2018-06-29
N529AS BOEING 737890 During NOT REPORTED - NR 2 HF WILL NOT TRANSMIT. GROUNDED - YES. REMOVED, REPLACED AND TESTED NR 2 HF ANTENNA COUPLER REF AMM 23-11-61. OPS NORMAL. 2018-06-28
N529AS BOEING 737890 During NOT REPORTED - APU FAULT ILLUMINATED AFTER ATTEMPTED START. GROUNDED - YES. PERFORMED APU BITE PER FIM 49-60 TASK 801, APU SHOWS CURRENT STATUS MESSAGE FAULT 49-41254 "START CONVERTER UNIT SHOWS START SYSTEM INOP" NO ROTATION SHUTDOWN. PERFORMED FIM 49-40-TASK 821 APU STARTED NORMALLY 5 TIMES - NO FAULT CODES IN FAULT HISTORY OR CURRENT STATUS PAGE. APU OPS CHECKS OK. 2018-06-28
N529AS BOEING 737890 During INSP/MAINT - FOUND FMC CDU ENGINE FAULT 73-20012, INTERNAL EEC FAULT ON ENGINE NR 2. SHORT TERM FAULT. DEFERRED PER T/C 78273000. GROUNDED - YES. ACCOMPLISHED FIM 73-21 TASK 807. CURRENTLY NO MAINT MESSAGE. ACCOMPLISHED EEC TEST PER AMM 73-21-00-700-804-F00, TEST PASSED. NO PREVIOUS HISTORY LAST 30 DAYS. THIS CLEARS THIS PLT. 2018-06-12
N529AS BOEING 737890 During CRUISE - ENROUTE, RECEIVED A VTK MOMENTARLY ON THE COPILOTS DISPLAY. SELECTED AUTOPILOT A AND THE MESSAGE WENT AWAY, CANNOT ENGAGE VNAV UNTIL RAN PROCEDURE IN FLIGHT HANDBOOK (SOFTWARE EXCEPTION HANDLING LOGIC) SEEMS TO WORK OK NOW. ACFT GROUNDED. PERFORMED FMC OPERATIONAL TEST IAW AMM 34-61-00, SYSTEM OPS CHECKED GOOD, NO HISTORY FOR THE LAST 30 DAYS. NO DEFECTS NOTED. 2018-06-08
N529AS BOEING 737890 During NOT REPORTED - RT PACK LIGHT ILLUMINATED, WILL NOT RESET. ACFT GROUNDED. RAN RIGHT PACK. RIGHT PACK ILLUMINATED. RIGHT PACK TEMP 100' C. AFTER COOLING DOWN, RESET AND RAN RIGHT PACK. NO AIR FLOW FROM HEAT EXCHANGER EXHAUST. IAW FIM 21-53, TASK 812. REMOVED AND REPLACED THE RT PACK AIR CYCLE MACHINE. NO OTHER DAMAGE IAW AMM 21-51-04. OPS AND LEAK CHECKED GOOD. BITETEST OF PACK ZONE TEMP CONTROLLER AND PACK FLOW TEMP CONTROLLER PASSED. 2018-05-24
N529AS BOEING 737890 During APPROACH - CAPTAIN'S F/D DID NOT PROVIDE PROPER GUIDANCE DURING MISSED APPROACH OF ILS APPROACH, COMMANDED NOSE DOWN AND ROLL WAS GIVING RANDOM COMMANDS. RECYCLED NOSE DOWN AND ROLL SEEMED TO RECOVER SOMEWHAT. ACFT GROUNDED. FLIGHT FAULT REVIEW SHOWSMMR/ILS NR 2 FAULT LAST LEG. ACCOMPLISHED IAW FIM 22-11, TASK 809, NO FAULTS FOUND. ACCOMPLISHED MMR LRU BITE, OPS NORMAL. 2018-05-21
N529AS BOEING 737890 During NOT REPORTED - APU MAINT LIGHT ILLUMINATED DURING START OF APU. GROUNDED - YES. APU OIL QUANTITY WAS LOW, SERVICED APU OIL PER B737-800AMM 12-13-31. OPS CK NORMAL. 2018-04-09
N529AS BOEING 737890 During NOT REPORTED - HF NR 2 FAILED. ACFT GROUNDED. VERIFIED CONTROL HEADS SHOWS FAIL WITH NR 2 HF SELECTED. PERFORMED FIM 23-11, TASK 802.NR 2 HF BITE IS NORMAL, NO FAULTS, GROUND VERIFICATION SUCCESSFUL. 2018-04-04
N529AS BOEING 737890 During INSP/MAINT - NR 2 FQIS PROBES 1, 6, AND 10 ARE OUT OF PF LIMITS IAW AMM 28-41-21-710-801. ACFT GROUNDED. REMOVED AND REPLACED THE PROBES IAW AMM 28-41-21-400-801. COMPARISON CHECK, AND OPERATIONAL TESTED GOOD. 2018-04-02
N529AS BOEING 737890 During CRUISE - NR 2 FMC FAILED DURING CRUISE WITH THE VTK FLAG. SYSTEM CAME BACK BY ITSELF AFTER ONE MINUTE. ACFT GROUNDED. ACCOMPLISHED FMS OPS TEST IAW AMM 34-61-00. NO FAULTS NOTED. GROUND VERIFICATION SUCCESSFUL. 2018-03-21
N529AS BOEING 737890 During CRUISE - DURING CRUISE, RT MAIN TANK GAUGE AND FUEL TOTAL GAUGE INTERMITTENTLY BLANKED OUT FOR A TOTAL OF 10 SECONDS EACH TIME.FUEL IN FMC REMAINED CONSTANT. ACFT GROUNDED. PERFORMED FIM 28-41, 801, NO CURRENT FAULTS, GROUND TEST PASSED. OPS NORMAL. 2018-03-14
N529AS BOEING 737890 During INSP/MAINT - HIGH STAGE REGULATOR ON THE NR 1 ENGINE FAILED A HEALTH CHECK. REVERSE FLOW DIAPHRAM FAILED. ACFT GROUNDED. REMOVED &REPLACED THE NR 1 HIGH STAGE REGULATOR IAW AMM 36-11-07. ACCOMPLISHED ENGINE BLEED AIR CROSSOVER TEST IAW AMM 36-11-00-710-801. OPS TESTED GOOD. ALL INDICATIONS WITHIN GIVEN PARAMETERS. 2018-03-08
N529AS BOEING 737890 During NOT REPORTED - HDG SELECT LIGHT OUT. ACFT GROUNDED. UNABLE TO DUPLICATE. HDG SELECT LIGHT OPERATES CORRECTLY FROM LIGHTS TEST SWITCH ON P1 PANEL. PERFORMED MCP INSTALLATION TEST IAW AMM 22-11-34-740-801, TEST PASSED. PERFORMED DFCS MCP INTERFACE TEST (BITE GRP 60.50), REF B737-800 FIM 22-11 TASK 802, HDG SELECT LIGHT PERFORMED CORRECTLY. CHECKS GOOD FOR SERVICE. 2018-01-05
N529AS BOEING 737890 During NOT REPORTED - EMERGENCY LIGHT COVER NEAR THE L1 DOOR FOUND BROKEN. ACFT GROUNDED. INSTALLED A NEW LIGHT COVER. 2017-12-18
N529AS BOEING 737890 During CRUISE - AT CRUISE, ON TWO SEPARATE OCCASIONS, RT WING TANK FUEL GUAGE BLANKED FOR UP TO TWO MINUTES. GROUNDED - YES. ACCOMPLISHED FQIS BITE PROC, FOUND FAULT CODE 28-41209 PROCESSOR FAILED REF FIM 28-41 TASK 801. REMOVED & REPLACED FUEL QTY UNIT PROCESSOR REF AMM 28-41-81. ACCOMPLISHED OPERATIONAL TEST & FQIS BITE PROC, NO FAULTS SHOWN IN CURRENT STATUS AND GND TESTCOMPLETE PASS, REF AMM 28-41-00-710-801. 2017-11-14
N529AS BOEING 737890 During CRUISE - LEFT FMC FAILED AT FL340 LEVEL FLIGHT, VTK DISPLAYED ON CA ND NO FMC PROMPT ON MCDU. SYSTEM FULLY RECOVERD AFTER 30 SECONDS. ACFT GROUNDED. FIM 34-60 TASKS 801 & 837 APPEARS TO HAVE BEEN AN INTERMITTENT FAULT FMC OPERATIONAL TEST IAW AMM34-61-00 NORMAL HAS NO OTHER RECENT HISTORY. 2017-10-12
N529AS BOEING 737890 During NOT REPORTED - APU FAILS TO START FAULT LIGHT ILLUMINATED. ACFT GROUNDED. REMOVED AND REPLACED APU IGNITER EXCITER BOX IAW AMM 49-41-31. OPS CHECKED GOOD. 2017-10-05
N529AS BOEING 737890 During TAXI/GRND HDL - HAD NO ROTATION ON THE NR 1 ENGINE. ATTEMPTED BOTH APU AND CROSSBLEED STARTS WITH NO ROTATION. ACFT GROUNDED. REMOVEDAND REPLACED THE NR 1 ENGINE STARTER IAW AMM 80-11-01-000-801-F00 AND AMM 80-11-01-400-801-F00. OPS CHECKED GOOD. 2017-09-18
N529AS BOEING 737890 During NOT REPORTED - APU INOPERATIVE. ACFT GROUNDED. PERFORMED BITE AND FOUND FAULTS 49-41011, 49-11019, 49-11021 AND 49-61223. PERFORMEDFIM 49-40, TASK 802, 49-10, TASK 801, 49-10, TASK 802, AND 49-60, TASK 812. ALL CHECKED GOOD. AFTER STARTING APU IAW FIM TASKS AND RECHECKING BITE, NO FAULTS INDICATED. 2017-08-28
N529AS BOEING 737890 During INSP/MAINT - APU WILL NOT START, FLAGGING FAULT CODE 49-41011 NO FLAME SHUTDOWN,IAW FIM 49-60 TASK 801. ACFT GROUNDED. ATTEMPTED APUSTART ON GROUND AND PERFORMED APU BITE TEST IAW FIM 49-60 TASK 801. APU OPERATES NORMAL 2017-08-23
N529AS BOEING 737890 During INSP/MAINT - WHILE PERFORMING T/C 78273000 ON THE NR 2 ENGINE, FOUND ECONOMIC FAULT BOTTOM LEFT EGT SIGNAL (T495S3) IS OUT OF RANGE.MESSAGE 77-20862. ACFT GROUNDED. REMOVED AND REPLACED THE NR 2 ENGINE BOTTOM RIGHT T49.5 PROBE. PERFORMED T49.5 PROBE INSTALLATION TEST. TEST GOOD, NO FAULTS. 2017-08-23
N529AS BOEING 737890 During INSP/MAINT - DIAGNOSTICS REPORTED THE NR 2 ENGINE TREND DATA SHOWS A SUDDEN SHIFT IN EGT, HDM, AND DEGT. ALL OTHER PARAMETERS ARE NORMAL. INDICATION ERRORS ARE SUSPECT. ACFT GROUNDED. REMOVED AND REPLACED THE NR 2 ENGINE CJ10 HARNESS IAW AMM 73-21-06. OPS NORMAL. GROUND VERIFICATION TESTED GOOD. 2017-08-22
N529AS BOEING 737890 During INSP/MAINT - GE DIAGNOSTICS REPORTS NR 2 ENGINE TREND DATA SHOWS A SHIFT IN EGT HOT DAY MARGIN ALL OTHER PARAMETERS NORMAL. EGT INDICATION ERRORS ARE SUSPECT. ACFT GROUNDED. PERFORMED T/C 7873000 AND FOUND FAULT CODE 77-20862 IN THE FAULT HISTORY OF THE NR 2 ENGINE. ACCOMPLISHED EGT INDICATION SYSTEM TROUBLESHOOTING AND CONNECTOR CLEANING IAW AMM 77-21-00-140-801. PERFORMED T49.5 AND EGT SYSTEM INSPECTION IAW AMM 77-21-01-200-801-F00, AND FOUND T49.5 S3 PROBE RESISTANCE OUT OF LIMITS.REMOVED AND REPLACED T49.5 S3 PROBE IAW AMM 77-21-01/401. OPERATIONAL CHECK, RESISTANCE VALUES, AND TEMPERATURE VALUESSATISFACTORY. 2017-07-20
N529AS BOEING 737890 During NOT REPORTED - MAP CAUTION DISPLAYED ON F/O'S INBOARD DU ALONG WITH NO VSPD AND LND ALT TO OUTBORD DISPLAY. NOTHING IN FMC SCRATCH PAD.ACFT GROUNDED. VERIFIED FAULT, CYCLED FMC SWITCH TO BOTH ON LT AND BACK TO RIGHT THEN TO NORMAL. BOTH FMC ARE WORKINGNORMAL. ACCOMPLISHED FMC BITE, ALL OK, IAW FIM 34--61 TASK 801. FOUND FMC PGM FAULT IAW FIM 34-61 TASK 807. 2017-06-06
N529AS BOEING 737890 During NOT REPORTED - TRIM AT EXIT TO L1 BROKEN. GROUNDED - YES. FOUND TO BE EMERGENCY LIGHT LENS. REMOVED AND INSTALLED NEW LENS. OK FOR SERVICE. 2017-05-19
N529AS BOEING 737890 During INSP/MAINT - ALL 24 FAN BLADE SHIMS ON THE NR 1 ENGINE ARE WORN. ACFT GROUNDED. REMOVED AND REPLACED THE SHIMS IAW T/C 78472002. 2017-04-20
N529AS BOEING 737890 During NOT REPORTED - WITH MAIN PANEL LIGHTS LESS THAN FULL BRIGHT, IAS & MACH DIGITS FLICKER. ACFT GROUNDED. REMOVED & REPLACED THE AUTOPILOT MODE CONTROL PANEL IAW AMM 22-11-34. SYSTEM OPS CHECKED NORMAL, LAND VERIFY & HGS SENSOR TEST IAW AMM 34-36-00 PASSED. 2017-04-19
N529AS BOEING 737890 During INSP/MAINT - CRACK INDICATION FOUND, RT HORIZ STAB LOWER SKIN AT STAB STA 101.90 I/B ROW OF FASTENERS, 10" FWD OF AFT SPAR MARKED AT.820" LONG. GROUNDED - YES. REMOVED DAMAGE AND ACCOMPLISHED DOUBLER REPAIR IAW SRM 55-10-01-2R-11 FIG 204 REPAIR 11 IS ACATEGORY B. 2017-04-05
N529AS BOEING 737890 During INSP/MAINT - NR 1 ENGINE J9 HARNESS DAMAGED. PUNCTURED INTO HARNESS CORE NEAR CJ9 CONNECTION. ACFT GROUNDED. ALT DEACTIVATION USED IAW CH 5 TABLE 3 ITEM 1 AND 3 05-07-01. REMOVED AND REPLACED THE J9 HARNESS IAW AMM 73-21-06. ALL TESTS PASSED. OPS CHECKED GOOD. 2017-03-28
N529AS BOEING 737890 During CRUISE - AT FL320 CAPTAIN'S CDU BLANKED OUT AND THE FOLLOWING LIGHTS: EXEC CALL, FAIL, MSG, AND OFST LIGHTS. CDU SCREEN RECOVEREDAFTER 5 SECONDS AND ALL LIGHTS WENT OUT, CDU FULLY RECOVERED WITH NO ACTIONS BY FLIGHT CREW. GROUNDED - YES. FLIGHT MANAGEMENT COMPUTER SYSTEM OPS CHECKS NORMAL PER AMM 34-61-50-710-801. 2017-03-21
N529AS BOEING 737890 During TAXI/GRND HDL - START ABORTED ON NR 2 ENGINE NO ROTATION ON N2. GROUNDED - YES. REMOVED AND REPLACED NR 2 ENGINE STARTER, REF AMM 80-11-01. OPS CHECK GOOD. 2017-03-17
N529AS BOEING 737890 During INSP/MAINT - BATTERY PACKS M1671, M1672, M1673, M1675, AND M1694 FAILED CAPACITY TEST REF T/C 78233001. GROUNDED - YES. REPLACED BATTERY PACKS AT M1671, M1672, M1675, AND M1694. REPLACED BATTERY AND CHARGER ASSEMBLY AT M1673. OPERATIONAL TEST OK, REF AMM 33-51-06/201. 2017-01-04
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER ENGINE START RECALL RECEIVED A PACK CAUTION LT LEFT PACK. ACFT GROUNDED. FOUND BAD AFT TRIM MOD VALVE. REMOVED AND REPLACED THE VALVE & OPS NORMAL & FAULT CLEARED IAW AMM 21-62-01. 2016-12-02
N529AS BOEING 737890 During INSP/MAINT - FOUND FAULT CODE 73-31161, THE MECHANICAL OVERSPEED PROTECTION SIGNAL IS OUT OF RANGE, A LONG TERM FAULT, ON THE NR 1 ENGINE BITE TEST FOR LEGS 1-7. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 ENGINE HMU. TEST 3A & 12 PASS, NO LEAKS NOTED. BITE CHECK PASSED, NO CURRENT FAULTS. 2016-11-30
N529AS BOEING 737890 During TAXI/GRND HDL - DURING PRE-FLIGHT "FD" FLAG ON CAPTAIN`S PFD. ACFT GROUNDED. HAD TO CYCLE FCC A DC CIRCUIT BREAKER BEFORE DFCS WILL GOINTO BITE. CURRENT STATUS PASSED. ACCOMPLISHED DFCS LRU INTERFACE TEST ONLY FOR FCC A, TEST PASSED, IAW AMM 22-11-33. 2016-11-22
N529AS BOEING 737890 During NOT REPORTED - HEADING SELECT KNOB ON MCP IS BROKEN. ACFT GROUNDED. REPLACED MCP IAW AMM 22-11-34. ACCOMPLISHED LWMP TESTS, DFCS LRUINTERFACE TEST FOR MCP, LAND VERIFY TEST AND HGS SENSOR TEST FOR FCC/AT. ALL TESTED GOOD IAW AMM 22-11-34, AMM 22-11-00,AND SMM 34-36-00. 2016-10-31
N529AS BOEING 737890 During INSP/MAINT - WHILE ACCOMPLISHING T/C 78273000 FOUND ECONOMIC FAULT 77-10852 (THE BOTTOM RIGHT EGT SIGNAL IS OUT OF RANGE. ACFT GROUNDED. NO RECENT FAULTS ON NR 2 ENGINE IAW T/C 78273000. 2016-10-21
N529AS BOEING 737890 During LANDING - FMC DISAGREE ON LANDING ROLL, VTK ON CAPTAIN'S ND, FMC PROMPT MISSING ON MCDU MENU PAGE. NO ACTION TAKEN. ALL RETURNED TO NORMAL DURING TAXI TO GATE. ACFT GROUNDED. FMC NUISANCE ERROR NOTED, NO MX REQUIRED, REF REQUIRED, IAW AMM 34-61-00-860-801. 2016-08-30
N529AS BOEING 737890 During TAXI/GRND HDL - AUTO FAIL AND ALTERNATE LIGHTS ILLUMINATED ON PRESSURIZATION PANEL. DISCOVERED DURING PRE-FLIGHT. ACFT GROUNDED. FOUNDFAULT DISPLAYED ON NR 1 DCPC. PERFORMED FIM 21-31 TASK 801. CLEARED FAULTS PER FIM PROCEDURE AND NO EXISTING FAULTS. BITE TESTS OK. GROUND VERIFICATION TEST OK. 2016-08-02
N529AS BOEING 737890 During INSP/MAINT - WHILE ACCOMPLISHING BLEED AIR CROSSOVER TEST FOR REPAIR CONFIRMATION OF LT ENGINE LOW DUCT PRESSURE, NOTED RT ENGINE DUCT PRESSURE DID NOT RISE ABOVE 15 PSI UNTIL 50% N1, ALL OTHER PARAMETERS NORMAL. SUSPECT NR 2 ENGINE HIGH STAGE REGULATOR FAILURE. ACFT GROUNDED. CONFIRMED HIGH STAGE REGULATOR FAILURE. CONTROL PRESSURE TO THE HIGH STAGE VALVE DOES NOTRISE ABOVE 7 PSI. HIGH STAGE VALVE CHECKED GOOD, FULL OPEN BY 5 PSI, IAW AMM 36-11-00-710-803. LEAK CHECKED IAW AMM 36-11-00. REPLACED THE HIGH STAGE REGULATOR IAW AMM 36-11-07. OPS CHECKED GOOD. ACCOMPLISHED BLEED AIR CROSSOVER TEST AGAIN IAW AMM 36-11-00, OPS CHECKED GOOD. 2016-08-02
N529AS BOEING 737890 During CRUISE - ENROUTE, RIGHT PRESSURE SHOWS 45 PSI AND LEFT SHOWS 25 PSI (FL340). ACFT GROUNDED. R & R THE NR 1 ENGINE PRE-COOLER CONTROL VALVE, IAW AMM 36-12-02-000-801 AND 36-12-02-400-801. LEAK & OPS CHECKED GOOD. ACCOMPLISHED NR 1 ENGINE BLEED AIR SYS HEALTH CHECK IAW TC NG-36WC-00001. OPS CHECKED GOOD. 2016-07-27
N529AS BOEING 737890 During NOT REPORTED - A/C PACK LIGHT ILLUMINATED FOR NR 2 PACK. EXTINGUISHES WITH M/C RESET. ACFT GROUNDED. R & R ZONE TRIM AIR MODULATINGVALVE IAW AMM 21-61-21, PERFORMED ZONE TRIM AIR MODULATING VALVE INSTALLATION BITE TEST, NO FAULT NOTED, AND LEAK CHECKFOUND NORMAL IN REF AMM 21-61-21, STEP 3. THIS CLEAR MEL 21-32B. 2016-07-20
N529AS BOEING 737890 During NOT REPORTED - RIGHT PACK LIGHT ILLUMINATED DURING RECALL AND EXTINGUISHED WITH MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED PACK/ZONE RT TEMP CONTROLLER BITE, OPS CHECKED NORMAL, NO FAULTS. 2016-07-19
N529AS BOEING 737890 During TAXI/GRND HDL - ON PREFLIGHT AUTO FAIL ILLUMINATED ON PRESSURIZATION PANEL. ACFT GROUNDED. CYCLED MODE CONTROL ON PRESSURE PANEL AND AUTO FAIL LIGHT EXTINGUISHED. BITE CHECK OF PRESSURE CONTROLLER NR 1 & 2 NORMAL WITH NO FAULTS LOGGED IAW FIM 21-31 TASK827. 2016-07-06
N529AS BOEING 737890 During INSP/MAINT - EMERGENCY LIGHT EXTERIOR SLIDE LIGHT AT R-1 DOOR INOP. GROUNDED - YES. RELAMPED AND TESTED PER B737-800 AMM 33-51-04-960-801 - OPS NORMAL. 2016-07-06
N529AS BOEING 737890 During INSP/MAINT - EMERGENCY LIGHT AREA LIGHT (AISLE FLOODLIGHT) INOP AT ROW 20 LEFT. ACFT GROUNDED. REPLACED THE LAMP AND TESTED IAW AMM33-51-03-960-801, OPS NORMAL. 2016-07-06
N529AS BOEING 737890 During CRUISE - ENROUTE RECEIVED A SINGLE FMC OPERATION MESSAGE ON THE CDU SCRATCH PAD WITH VTK DISPLAYED ON THE F/O'S ND MAP DISPLAY.FOLLOWED THE QRH AND PLACED THE FMC SWITCH IN "BOTH ON L". CHECKED THE FMC INFO ON POS SHIFT PAGE 3/3 AND FOUND THE FMC-R IS BLANK. ACFT GROUNDED. T/S IAW FIM 34-61. COULD NOT DUPLICATE FAULT. FMC OPERATION RESTORED. NO 30 DAY HISTORY. OK FOR SERVICE. 2016-06-07
N529AS BOEING 737890 During TAXI/GRND HDL - LT PACK LIGHT ILLUMINATED UPON RECALL AFTER ENGINE START. ACFT GROUNDED. ATTEMPTED TO DO BITE ON NR 1 IAW FIM 21-62, TASK 301 NR 1 PTC DID NOT OPERATE. FOUND RAM AIR MOD LT C/B P6-4 OUT, C/B WOULD NOT RESET. REF AMM 20-60-01, NO DEFECTSNOTED ON C/B. REMOVED CONNECTOR REF WDM 21-51-14. C/B RESET, RECONNECTED D966 C/B POPPED. RE-ACCOMPLISHED PTC BITE AFTER INSTALL OF NEW ACTUATOR. BITE TEST GOOD FIM 21-62, TASK 801. REPLACED LT RAM AIR ACT REF AMM REF 21-51-21-000-801. OPS CHECK NORMAL. MEL 21-32B CLEARED. 2016-06-03
N529AS BOEING 737890 During NOT REPORTED - CONTROLLER CABIN TEMP IS DIFFICULT TO CONTROL. SOME ROTATION OF TEMP MAKE IT TOO HOT OR TOO COLD. ACFT GROUNDED. CLEANED SENSORS IN COCKPIT, FWD CABIN. TEMP CONTROLLER NOT FAULTING. OPS CHECK GOOD IAW FIM 21-62, TASK 814. 2016-06-03
N529AS BOEING 737890 During NOT REPORTED - RIGHT PACK LIGHT ILLUMINATED ON RECALL. ACFT GROUNDED. PERFORMED RT PACK TEMP CONTROL BITE, REF AMM 21-62, TASK 801, RAM AIR ACTUATOR LOGGED ON RECENT FLIGHTS. DUE TO REPEATED WRITE UPS, R & R RT RAM AIR INLET ACTUATOR, REF AMM 21-51-21.RAM AIR INLET ACTUATOR TEST PASSED WITH NO FAULTS, REF TASK AMM 21-61-00-700-806-002. 2016-04-12
N529AS BOEING 737890 During NOT REPORTED - RIGHT PACK LIGHT ILLUMINATED ON RECALL AND EXTINGUISHED WITH MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED RT PACK/ ZONE TEMP CONTROLLER BITE TEST, REF AMM 21-61-00-700-806-002. FAULT LIGHT CLEARED ON VERIFY. CLEARED WITH RESET. 2016-04-11
N529AS BOEING 737890 During DESCENT - RIGHT PACK LIGHT ILLUMINATED ON RECALL DURING DESCENT CHECKLIST. ACFT GROUNDED. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST, REF AMM TASK 21-61-00-700-806-002, ON RT PACK AND FOUND RAM AIR ACTUATOR LIGHT ILLUMINATED AFTER BIT BUTTON PUSHED, CONTINUED TEST AND PRESSED VERIFY AND WATCHED RT PACK INLET EXERCISE OPEN AND CLOSED. PRESSED RESET BUTTON, THEN ACCOMPLISHED THE COMPLETE BITE TEST 2 MORE TIMES WITH NO FAULTS NOTED, NO HISTORY FOUND IN PAST 30 DAYS. OK FOR CONTINUEDSERVICE. 2016-03-24
N529AS BOEING 737890 During NOT REPORTED - FMC WOULD NOT SELECT TO POWER OR ALLOW MANUAL SELECTION OF TO POWER. ACFT GROUNDED. RESET FMCS COMPUTER 1 AND 2 CB'S,REF FIM TASK 34-61, TASK 836 AND ACARS CMU-1 AND CMU/ACARS DC C/B'S REF FIM TASK 23-27, TASK 815. NO HELP. FOUND TAT TEMP NOT DISPLAYING AND PROBE HEAT A AND B ON. TURNED OFF PROBE HEAT, TAT DISPLAYED AFTER SEVERAL MINUTES AND FMC POWER SELECTIONS DISPLAYED NORMALLY. 2016-03-18
N529AS BOEING 737890 During NOT REPORTED - ON RECALL THE CONTROLLER CAB ZONE TEMP LIGHT ILLUMINATES. IT EXTINGUISHES ON MASTER CAUTION RESET. ACFT GROUNDED. VERIFIED CONTROL CABIN ZONE TEMP LIGHT ILLUMINATES ON MASTER RECALL, EXTINGUISHING WITH MASTER RESET. PERFORMED PACK/ZONETEMP CONTROL BITE TEST IAW AMM 21-61-00, FOUND NR 1 CONTROL WITH TRIM VALVE THIS PACK, RED FAULT LIGHT ON IN PREVIOUS FAULTS. CONTINUED WITH BITE PROCEDURE, OPS NORMAL, FAULT LIGHT EXTINGUISHED. SUBSEQUENT BITE TESTS ALSO OPS NORMAL AND FAULT LIGHT REMAINS EXTINGUISHED. COCKPIT CONTROL CAB ZONE TEMP LIGHT REMAINS EXTINGUISHED ON MASTER RECALL. 2016-02-24
N529AS BOEING 737890 During TAXI/GRND HDL - SHORTLY BEFORE TAKEOFF, NR 1 ENGINE CONTROL LIGHT COME ON. ACFT GROUNDED. PERFORMED ELECTRONIC ENGINE CONTROL BITE REF73-00, TASK 801 FOUND FAULT CODE 75-10581. REF FIM 75-23, TASK 801. PERFORMED TEST 12 ACTUATORS TEST. TEST PASSED: NO FAULTS, FAULT IS INTERMITTENT. RE-PERFORMED ELECTRONIC ENGINE CONTROL BITE NO RECENT FAULTS GROUND VERIFICATION SUCCESFUL. TSR ACCOMPLISHED, REF FIM 75-23, TASK 801. ELECTRONIC ENGINE CONTROL BITE SHOWS NO CURRENT OR PAST FAULTS. ACTUATORS TEST SHOWS NO FAULTS. GVI SHOWS NO DEFECTS REF WDM 75-31-12. RESISTANCE CHECKS FROM DP909 TO TBV DP0907 CHANNEL A: D-R/31.6 OHMS, W-R/ 31.3 OHMS, D-W/ 62.8. DP1010 TO DP1007 RESISTANCE CHECKS CHANNEL B: D-R/31.4 OHMS, W-R/31.1 OHMS, D-W 2016-02-23
N529AS BOEING 737890 During NOT REPORTED - WINDOW LIGHTED NUMERALS CONSTANTLY PULSING ON MCP. ACFT GROUNDED. CONFIRMED FAULT. R & R DFCS MCP REF AMM 22-11-34, OPSCHECK NORMAL. ACCOMPLISHED DFCS LRU INTERFACE TEST MCP, GP 32, REF AMM 22-11-34, DFCS LAND VERIFY TEST, GP 49, REF AMM22-11-00 AND HGS SENSOR TEST REF AMM 34-36-00, OPS CHECK NORMAL. 2016-02-17
N529AS BOEING 737890 During NOT REPORTED - HISTORY OF FAULT CODE 75-10581, TBV DEMAND AND POSITION SIGNAL DISAGREE. ACFT GROUNDED. ACCOMPLISHED ELECTRIC ENGINE CONTROL TEST AND ACTUATORS TEST ON NR 1 ENGINE REF AMM 71-00-00-700-807-F00, NO FAULTS LOGGED. ACCOMPLISHED FIM 75-23, TASK 801, ALL RESISTANCE CHECKS ARE WITHIN LIMITS. FOUND J6 CONNECTOR ON THE ELECTRONIC ENGINE CONTROL IS VERY LOOSE. RECONNECTED ALL CONNECTOR REF FIM 75-23, TASK 801. ACCOMPLISHED ACTUATORS TEST AND ELECTRONIC ENGINE CONTROL BITE TESTREF AMM 71-00-00-700-807-F00. NO FAULTS LOGGED. 2016-02-04
N529AS BOEING 737890 During TAXI/GRND HDL - NR 1 ENGINE CONTROL LIGHT ILLUMINATED ON TAXI OUT. ACFT GROUNDED. ACCOMPLISHED ELECTRONIC ENGINE CONTROL BITE IAW FIMAMM 73-00-TASK 801. ACCOMPLISHED FIM AMM 75-23-TASK 801. TEST PASSED NO FAULTS MESSAGE. OK FOR SERVICE. 2016-02-02
N529AS BOEING 737890 During NOT REPORTED - IN FLIGHT MOMENTARY FMC (RIGHT) FAIL. RESTORED ITSELF. ACFT GROUNDED. VERIFIED LAST FLT RT FMC FAILED. ACCOMPLISHED FMCSYSTEM OPS TEST, TEST PASS REF MM 34-61-00-710-801. 2016-01-05
N529AS BOEING 737890 During TAXI/GRND HDL - DURING AFTER START CHECK, ON MASTER CAUTION RECALL, THE CONTROLLER CABIN ZONE TEMP LIGHT ILLUMINATED. THE ZONE TEMP LIGHT EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. FOLLOWED QRH NO FURTHER ACTION REQUIRED. ACFT GROUNDED. PERFORMED PACK/ZONE BITE TEST IAW AMM 21-51-00-700-803. NO FAULTS INDICATED. BITE TEST PASSED. 2015-12-22
N529AS BOEING 737890 During CRUISE - LEFT FMC FAILED DURING THE FLIGHT. ACFT GROUNDED. R & R LT FMCS COMPUTER IAW AMM 34-61-02. ACCOMPLISHED SOFTWARE LOADIAW AMM 34-61-00 VIA CROSSLOAD. SYS OPS CHECKS NORMAL IAW AMM 34-61-00. 2015-11-30
N529AS BOEING 737890 During NOT REPORTED - LEFT FMC FAILURE UNABLE TO RESTORE AFTER QRH PROCEDURE. ACFT GROUNDED. VERIFIED DISCREPANCY, OPENED, CLOSED 2CBS FOR LT FMC, REF 34-61, TASK 836. FMC RETURNED TO NORMAL. ACCOMPLISHED LT FMC BITE 34-61, TASK 801. FOUND MMR, RT ILS FAULT. ACCOMPLISHED FIM 22-11, TASK 802. DFCS LRU REPLACEMENT TEST. NO MMR FAULTS FOUND. NO HISTORY IN 30 DAYS. SYS CKSNORMAL. 2015-10-30
N529AS BOEING 737890 During NOT REPORTED - LEFT PACK LIGHT ILLUMINATES WITH RECALL EXTINGUISHES WHEN MASTER CAUTION SYSTEM IS RESET. ACFT GROUNDED. VERIFIED ANDRESET CONTROL BOXES 1 AND 2 REF PLAC ON FRONT OF CONTROL BOX, GROUND VERIFICATION NORMAL. 2015-10-19
N529AS BOEING 737890 During NOT REPORTED - ON CAPT FMC THE EXEC LIGHT & THE OFFSET LIGHT FLASH BRIGHT THEN DIM AT APPROXIMATELY 1 TO 2 SECOND INTERVALS WHEN THE LIGHTS TEST SWITCH IS IN THE DIM POSITION. IN THE BRIGHT POSITION THE FMC LIGHTS OPERATE NORMAL, BRIGHT. AFTER 3 HRS OFFLIGHT THE LIGHTS STOPPED FLASHING BRIGHT/DIM BUT THEN REMAINED BRIGHT. WOULD NOT DIM AT ALL WITH THE LIGHTS SWITCH.ACFT GROUNDED. RESET ACFT EXT POWER. PERFORMED FMCS BITE REF FIM TASK 34-61, TASK 801. NO INFLT OR SENSORS FAULTS FOUND. ALSO EXEC KEY TESTS GOOD IAW FIM TASK 34-61, TASK 805. 2015-10-06
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE DISPLAYED ON TAXI. ACFT GROUNDED. ACCOMPLISHED QRH, MESSAGE NO LONGER ILLUMINATED. 2015-09-25
N529AS BOEING 737890 During TAXI/GRND HDL - FOLLOW INITIALIZATION TAKES ABOUT 30 MINS TO RECEIVE DATA TO FMC'S. DURING PROGRAMING PROCESS A MESSAGE SHOWS UP: "FMCSFILE SYSTEM DOWNLOAD UTILITY INSERT INTO DATA LEADER DISK FORMATTED BY THE PC UTILITY OR PRESS HERE TO EXIT". ACFT GROUNDED. NR 1 & NR 2 FMC'S, OPS NORMAL IAW AMM 34-61-00-710-801. 2015-09-25
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE ON GROUND. ACFT GROUNDED. RAN CHECKLIST QRH, FMC DISAGREE NO LONGER DISPLAYED. 2015-09-15
N529AS BOEING 737890 During NOT REPORTED - EXIT SIGN OVER THE L-2 DOOR IS MISSING ITS COVER. ACFT GROUNDED. INSTALLED A NEW EXIT SIGN LENS AT L-2 DOOR, OPS CHECKED NORMAL REF AMM 33-51-01. 2015-09-08
N529AS BOEING 737890 During NOT REPORTED - L-2 DOOR HAS MISSING EXIT PLASTIC SIGN. ACFT GROUNDED. REINSTALLED & SECURED A NEW LENS. 2015-08-19
N529AS BOEING 737890 During CRUISE - LEVEL FL380 IN CRUISE. RIGHT FMC MASTER. LEFT FMC P/RST LIGHT ILLUMINATED FOLLOWED BY LT MAP DISPLAY DATA REMOVED AND"VTK" ILLUMINATED ON NAV DISPLAY. LEFT CDU MENU DISPLAY WITH NO FMC ON MENU. AFTER 2 MIN ALL DATA AND INDICATIONS REBUILT ITSELF TO NORMAL DISPLAYS. ACFT GROUNDED. RESET BOTH FMC SYSTEMS AND TESTS NORMAL IAW FIM 34-61, TASK 807. ETOPSSIGNIFICANT SYS, GROUND VERIFICATION SUCCESSFUL. 2015-08-17
N529AS BOEING 737890 During NOT REPORTED - LEFT FMC FAILURE ENROUTE. UNABLE TO RESTORE DUAL FMC OPS. RIGHT FMC NORMAL. ACFT GROUNDED. SUCCESSFULLY PERFORMED FMCS OPS TEST IAW AMM 34-61-00-710-801. NO FAULTS FOUND AND NO MAINTENANCE HISTORY WITHIN THE PAST 30 DAYS. 2015-08-06
N529AS BOEING 737890 During TAXI/GRND HDL - NR 2 ENGINE CONTROL LIGHT ILLUMINATED AFTER ENGINE START. ACFT GROUNDED. ENGINE CONTROL LIGHT OUT AFTER BLOCK IN. ACCOMPLISHED BITE IAW FIM 73-00, TASK 801- FOUND FAULT (3) CODES 73-21282, 73-10012, 73-10042 IN "RECENT FAULTS", FAULT HISTORY. AT THIS POINT ELECTRONIC ENGINE CONTROL BITE FAILED. UNABLE TO RETURN TO BITE- ELECTRONIC ENGINE CONTROL INOPERATIVE. GVI OF ELECTRONIC ENGINE CONTROL & HARNESS SHOWS NO FAULTS. REPLACED NR 2 ENGINE, ELECTRONIC ENGINE CONTROL UNIT,REF MM 73-21-60-000-801-F00; 73-21-60-400-801-F00. PERFORMED FADEC SYS TEST IAW MM 73-21-00-700-804-F00. ALL TESTS PASS. PERFORMED ENGINE RUN, OPS CHECK GOOD. 2015-06-25
N529AS BOEING 737890 During NOT REPORTED - NR 1 HF RADIO WILL TRANSMIT BUT NOT RECEIVE. NR 2 HF RADIO WILL TRANSMIT BUT ONLY 2 X 2 RECEPTION. ACFT GROUNDED. UNABLE TO DUPLICATE DEFECT. ACCOMPLISHED GOOD COMMUNICATION ON BOTH NR 1 & NR 2 HF SYSTEMS WITH FREQ 8.933. SELCAL ON BOTH HF SYSTEMS OPS NORMAL. GROUND VERIFICATIONS FOR NR 1 & 2 HF PASSED IAW MM 23-11-00. 2015-06-17
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE, ACFT GROUNDED. RESOLVED IAW QRH. 2015-06-17
N529AS BOEING 737890 During INSP/MAINT - IN THE AFT CARGO FLOOR AREA , LT TRANSITION PANEL CORRODED. BS 727C-BS 767, BL LBL24 -BL LBL30, STR 25L -STR 26L. ACFTGROUNDED. REMOVED CORROSION FROM TRANSITION PANEL AND FOUND TO BE OUT OF LIMITS IAW SRM 53-00-53, REPAIR TRANSITION PANEL IAW SRM 53-00-53, REPAIR 5. 2015-05-01
N529AS BOEING 737890 During INSP/MAINT - PER CUSTOMER REP NED: FABRICATE NEW AFT CARGO COMPARTMENT FLOOR PANEL 140EF DUE TO SEVERAL DEEP GOUGES. GROUNDED - YES.FABRICATED NEW FLOOR PANEL 140EF AFT CARGO PIT IAW BAC DWG 453A2610 ALODINED AND PRIMED AIW B737-800 SRM 51-20-01. 2015-04-28
N529AS BOEING 737890 During INSP/MAINT - IN THE AFT PIT FLOOR AREA , LEFT TRANSITION PNL CORRODED. DOT ATTACH, BS 727C - BS 767, BL LBL24 - BL LBL30, STR 25L - STR 26L. GROUNDED - YES. REMOVED CORROSION FROM TRANSITIONPANEL FROM STA 727L TO 747+10 LBL 24, ORIGINAL THICKNESS .040 MAT REMOVED .003 REMAINING .037 FOUND TO BE WITHIN LIMITS IAW B737-800 SRM 53-00-53,ALODINED,PRIMED AND TOPCOATED IAW B737-800 SRM 51-20-01 & AMM 51-21-10,HASH MARK AREA IAW B737-800 SRM 51-05-01, REMOVED CORROSION ON TRANSITION PANEL FROMSTA 747+10-767+10 LBL 24 ORIGINAL MAT THICK .040 MAT REMOVED .006 REMAINING MAT THICKNESS .034 FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-00-53,REPAIR TRANSITION PANEL FROM STA 747+10-767+10 IAW B737-800 SRM 53-00-53 REPAIR 5 REMOVED 2015-04-28
N529AS BOEING 737890 During INSP/MAINT - IN THE AFT PIT FLOOR AREA , RIGHT TRANSITION PNL CRACKED . DOT ATTACH, BS 727J - BS 727J, BL RBL24 - BL RBL30, STR 25R -STR 26R. GROUNDED - YES. REMOVED CRACKED TRANSITION PANEL FROM AFT PIT RH STA 727E+10 TO 767, FABRICATED NEW TRANSITION PANEL AND 2EA SPLICE IAW B737-800 SRM 53-00-53-2R ALODINED,PRIMED IAW SRM 51-20-01,TOPCOATED IAW AMM 512-21-10,INSTALLED TRANSITION PANEL REPAIR IAW B737-800 SRM 53-00-53-2R-5 REPAIR 5,CORROSION SECTION ON TRANSITION PANEL FROM STA 727FTO 767 ACCOMPLISHED ON CUSTOMER CARD NO. G4896432 REMOVED DOT . 2015-04-28
N529AS BOEING 737890 During INSP/MAINT - MAIN CABIN FLOOR INTERCOSTAL HAS APPROX 1.2500" CRACK AT FASTENER HOLE IN UPPER FLANGE BS 344-360 BL 0. ACFT GROUNDED. R& R INTERCOSTAL IAW SRM 51-40-052, REF BAC DWG 1415400, REV B, REMOVED DOT. 2015-04-24
N529AS BOEING 737890 During INSP/MAINT - MAIN CABIN FLOORBOARD SUPPORT CHANNEL CRACKED AT STA 540, LBL 2.0. ACFT GROUNDED. REMOVED MAIN CABIN FLOORBOARD SUPPORTCHANNEL AT STA 540, LBL 2.0 IAW SRM 51-40-02, LOCATED AND DRILLED NEW FLOOR SUPPORT CHANNEL IAW SRM 51-40-05, INSTALLED NEW FLOORBOARD SUPPORT CHANNEL AT STA 540, LBL 2.0 IAW SRM 51-40-02, REMOVED DOT. 2015-04-24
N529AS BOEING 737890 During INSP/MAINT - 1" CRACK INDICATION AT STABILIZER STA 184 2" AFT OF FRONT SPAR ON RT HORIZONTAL STABILIZER LOWER SKIN, MARKED IN RED. ACFT GROUNDED. REMOVED DAMAGE AND ACCOMPLAISHED DOUBLER REPAIR IAW SRM 55-10-01-2R-11, FIG 204, REPAIR 11 IS A CATEGORY BREPAIR, INSPECTION THRESHOLD IS DUE AT 56000 FLIGHT CYCLES, REPEAT INTERVAL INSPECTIONS ARE REQUIRED AT 9000 FLIGHT CYCLES BY DETAILED VISUAL INSPECTIONS OR EXTERNAL LFEC INSPECTIONS IAW NDT PART 6,53-30-00 PROCEDURE 5 IAW SRM 55-10-01-2R-11 REPAIR 11, PARA 5, TABLE 204. 2015-04-24
N529AS BOEING 737890 During INSP/MAINT - MAIN CABIN FLOORBEAM INTERCOSTAL STA 344 TO 360 LBL 12 IS CRACKED AT AFT FASTENER HOLE. ACFT GROUNDED. R & R INTERCOSTAL IAW SRM 51-40-02, REF BAC DWG 141A5400, REV B, REMOVED DOT. 2015-04-24
N529AS BOEING 737890 During CRUISE - TEMPORARY LOSS OF RT FMC APPROXIMATELY 4 + 25 MINUTES INTO FLIGHT. RESTORED TO NORMAL OPERATION WITHIN 2 MINUTES. ACFTGROUNDED. ACP FIM TASK 34-61-801. NO FAULTS LOGGED. GROUND VERIFICATION CK GOOD. REF AMM 34-61-00-710-801. NO PREVIOUS HISTORY IN 30 DAYS. 2015-04-21
N529AS BOEING 737890 During INSP/MAINT - 24 EA SHIMS WORN & MISSING COATING, NR 2 ENGINE. ACFT GROUNDED. R & R 24 EA SHIMS IN REF TASK CARD 78472002, NR 2 ENGINE. 2015-04-20
N529AS BOEING 737890 During NOT REPORTED - WITH LIGHTS TEST SWITCH IN DIM, EXEC, CALL AND MSG LIGHTS ON CA MCDU FLASHED DIM TO BRIGHT APPROXIMATELY 60 CPS. OK INBRIGHT. ACFT GROUNDED. UNABLE TO DUP/VERIFY DISCREPANCY. UPON ACFT POWER UP, REF MM 34-61-00, TEST OF THE ANNUNCIATORS OPS NORMAL W/ DIM, BRIGHT SWITCH, DCU BRIGHTNESS AND FMC MCDU FACEPLATE BACK GROUND LIGHTING GOOD. NO HISTORY LAST 90 DAYS. GROUND VERIFICATION, OPS NORMAL. 2015-04-09
N529AS BOEING 737890 During INSP/MAINT - EMERGENCY LIGHT EXIT LOCATOR SIGN AT RT FORWARD OVERWING EXIT IS BROKEN AND LENS IS MISSING. ACFT GROUNDED. REMOVED, REPLACED, AND TESTED EXIT LOCATOR LIGHT ASSY AT RT FORWARD OVERWING EXIT IAW MM 33-51-01-960-802. OPS NORMAL. 2015-03-31
N529AS BOEING 737890 During NOT REPORTED - "OFST" LIGHT ON CAPTAIN'S FMC WILL NOT DIM WHEN COCKPIT LIGHTS ARE SELECTED DIM. ACFT GROUNDED. REPLACED THE MCDU KEYBOARD WITH NEW ONE. ACCOMP CDU LAMP TEST AND KEY TEST, BOTH PASS REF MM 34-61-01-400-801. 2015-03-10
N529AS BOEING 737890 During INSP/MAINT - LIGHTS FROM SEATS ROWS 17-24 , L1 DOOR, AND FWD GALLEY CENTER LIGHTS FAILED TO STAY ILLUMINATED FOR 15 MINUTES. ACFT GROUNDED. R & R EMERGENCY POWER SUPPLIES REF WDM 33-51-22 AND 33-51-21. EMERGENCY LIGHTS OPS TEST NORMAL. 2015-02-10
N529AS BOEING 737890 During NOT REPORTED - WINDOW HEAT "R" SIDE OVERHEATED TWICE. WOULD NOT RESET. ACFT GROUNDED. BITE TEST SHOWS SENSOR FAULT,IMMEDIATE, SWAPPEDTO A/T SENSOR, TEST CABLE, DELAYED OVERHEAT W/SENSOR FAULT. HEATER RESISTANCE, D10572, PINS 3 & 4 = 59 OHMS, H15. CONFIRMED RT SLIDER WINDOW TAPS ARE CORRECT FOR H15 WINDOW REF WDM 30-41-11. REMOVED R2 SLIDING WINDOW IAW AMM 56-12-11-000-801. INSTALLED SERVICEABLE WINDOW IAW AMM 56-12-11-400-801. WINDOW HEAT OPS TEST IAW AMM 30-41-00-710-801, GOOD. 2015-01-28
N529AS BOEING 737890 During NOT REPORTED - HF NR 1 RADIO IS INOPERATIVE. ACFT GROUNDED. PERFORMED HF COMM TEST IAW MM 23-11-00 730-801. SYSTEM OP CHECKED GOOD.NO DEFECTS NOTED AT THIS TIME. 2015-01-21
N529AS BOEING 737890 During NOT REPORTED - CAPTAIN`S FMC OFST ANNUNICATOR DOES NOT DIM WHEN LIGHTS SELECTOR SWITCH SELECTED TO DIM ALL SIDE BAR ANNUNNICATORS ARE BRIGHT. ACFT GROUNDED. TESTED CAPTAIN`S FMC OFST ANNUNCIATOR UNABLE TO DUPLICATE DEFECT AT THIS TIME, NO HISTORY IN LAST 60 DAYS. 2015-01-21
N529AS BOEING 737890 During TAXI/GRND HDL - LEFT PACK LIGHT ILLUMINATED ON RECALL AND EXTINGUISHES ON MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED AMM TASK 21-61-00-700-806-002. PACK/ZONE TEMP CONTROL BITE. NO FAULTS, NO HISTORY PAST 30 DAYS. 2015-01-09
N529AS BOEING 737890 During INSP/MAINT - R1 DOOR SLIDE EMERGENCY LIGHT INOPERATIVE. ACFT GROUNDED. R & R THE LIGHT IAW AMM 33-51-04-960. OPS CHECKED GOOD. 2014-12-10
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE, ACFT GROUNDED. REBOOTED IAW QRH. 2014-12-09
N529AS BOEING 737890 During INSP/MAINT - EMERGENCY AISLE LIGHTS AT ROWS 8 ABC AND 11 ABC INOPERATIVE. ACFT GROUNDED. REPLACED POWER SUPPLY AND BATTERY PACK, REFMM33-51-06 AND AREA LIGHT, AISLE LIGHT, ASSY AT ROW 8 ABC REF. MM33-51-03. TESTED- OPS. NORMAL. 2014-12-02
N529AS BOEING 737890 During INSP/MAINT - RIGHT HORIZONTAL STABILIZER LOWER SURFACE HAS TWO CRACKS VERIFIED BOTH CRACKS HFEC 51 PART 6, APPROXIMATELY ONE INCH ANDSECOND CRACK APPROXIMATELY .5. ACFT GROUNDED. REPAIRED THE CRACKS IAW SRM 55-10-01-2R-11. 2014-11-26
N529AS BOEING 737890 During NOT REPORTED - DURING LANDING, ELECTRIC LIGHT ILLUMINATED ON OVERHEAD PANEL. ACFT GROUNDED. CONFIRMED ELECTRIC LIGHT ON ON OVHD PANEL.FOUND BATTERY CHARGER FAULT WHILE PERFORMING TEST. PERFORMED FIM 24-31, TASK 824. NO FAULTS NOTED AT THIS TIME. 2014-11-13
N529AS BOEING 737890 During NOT REPORTED - SEAT 17F EMERGENCY EXIT PLASTIC COVER FELL OFF. ACFT GROUNDED. FOUND BASE OF LIGHT ASSY BAD, REMOVED AND INSTALLED SERVICEABLE ASSY. OPS GOOD. OK FOR CONTINUED SERVICE. 2014-10-29
N529AS BOEING 737890 During NOT REPORTED - DURING FLIGHT, CIRCUIT BREAKER FOR BATTERY STBY SWITCH, POS INDICATION, RT 28 VOLT DC AT B5, IS OUT. ACFT GROUNDED. RESET BATTERY, STBY, SWITCH POS IND CIRCUIT BREAKER IAW AMM 20-60-01. CIRCUIT BREAKER RESET PROCESS. PERFORMED SPCU INSTALLATION TEST IAW AMM 24-34-11-400-801, OPS CHECKED GOOD. 2014-10-27
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER TRANSFERRING FROM EXTERNAL TO APU ELECTRICAL POWER NO SATCOM PROMPT. ACFT GROUNDED. SATCOM LOCKED UP PROCDURE ACCOMPLISHED ON GROUND-SATCOM PROMPT RETURNED. 2014-09-17
N529AS BOEING 737890 During INSP/MAINT - NR 1 ENGINE FAN BLADE SHIMS MOLYDAG COATING WORN. ACFT GROUNDED. R & R FAN BLADE SHIMS ON NR 1 ENGINE REF T/C 78472002. 2014-09-08
N529AS BOEING 737890 During INSP/MAINT - DURING FAN BLADE LUBE ON NR 2 ENGINE, FOUND NR 18 PLATFORM CRACKED ON LATERAL SURFACE. ACFT GROUNDED. REPLACED NR 18,PLATFORM AND NR 6, OPPOSITE, POSITION PLATFORM IAW T/C 78472002. ACCOMPLISHED ENGINE NR 2 VIBRATION SURVEY IAW MM 71-00-00. 2014-08-05
N529AS BOEING 737890 During INSP/MAINT - NR 2 ENG AFT FLANGE, FIRE SHIELD, HAS CRACKS AT BOLT HOLES. ACFT GROUNDED. REPLACED AFT FLANGE ASSY IAW AMM 72-56-400-801, STEP 3 A-E AND F (2) THRU G. 2014-07-30
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER PUSHBACK SATCOM LOCKED UP ON GROUND, ACFT GROUNDED. RAN CHECKLIST REGAINED SATCOM FUNCTION IAW FIM TASK 23-15-00-23-801, NO FURTHER ACTION REQUIRED. 2014-07-28
N529AS BOEING 737890 During NOT REPORTED - RADAR SHOWS FALSE RETURN AT 10 & 2 O'CLOCK. ACFT GROUNDED. COULD NOT DUPLICATE. NO HISTORY 90 DAYS. ACCOMPLISHED WEATHER RADAR SYS - SYS TESTED IAW MM 34-43-00-730-802-001, TEST PASSED. OK FOR SERVICE. ETOPS SIGNIFICANT SYS GROUND VERIFICATION SUCCESSFUL. 2014-07-15
N529AS BOEING 737890 During TAXI/GRND HDL - NO SATCOM PROMPT ON MCDU AFTER ENGINE START. ACFT GROUNDED. QRH PROCEDURE FOLLOWED TO SUCCESSFULLY RESET SATCOM. 2014-07-14
N529AS BOEING 737890 During NOT REPORTED - MISSING SATCOM SELECT ON MCDU MENU. ACFT GROUNDED. PERFORMED QRH PROCEDURE, OPS NORMAL. 2014-06-24
N529AS BOEING 737890 During NOT REPORTED - NR 1 ENGINE ALTERNATE POWER CHANNEL B CIRCUIT BREAKER TRIPPED. ACFT GROUNDED. INSPECTED AND RESET CIRCUIT BREAKER WITHNO DEFECTS NOTED. PERFORMED NR 1 ENGINE START AND CIRCUIT BREAKER TRIPPED AGAIN. R & R NR 1 ENGINE EEC IAW AMM 73-21-60-00-801-F00 AND 73-21-60-400-801-F00, ALL SYS TEST PASSED. PERFORMED NR 1 ENGINE START WITH NO DEFECTS NOTED. OK FOR SERVICE. EEC AND SOFTWARE VERIFIED. ALL SYSTEM GROUND FUNCTIONAL TEST GOOD. 2014-06-24
N529AS BOEING 737890 During CRUISE - NR 2 ENGINE ANTI-ICE VALVE COWL VALVE OPEN SHOWS DISAGREEMENT. POSITION IN OPEN OR COWL. TAI SHOWS ON PANEL. ACFT GROUNDED. DIVERSION TIME: 52 MINUTES. R & R NR 2 ENG COWL TAI VALVE IAW AMM 30-21-11-400-801. OPS CHECK NORMAL IAW SAME. 2014-06-13
N529AS BOEING 737890 During INSP/MAINT - APU CT5ATP EGT DATA SHOWS EGT IS TRENDING TOWARDS ESTABLISHED THRESHOLD. ACFT GROUNDED. REMOVED ALL APU FUEL NOZZLES, REF AMM 49-31-14-000-801. INITIATED INSTALLATION OF ALL APU FUEL NOZZLES IAW AMM 49-31-14-400-801. STEP 3A-3F(G), APU REQUIRES INSTALLTION TEST AND LEAK CHECK OF FUEL NOZZLES. COMPLETED INSTALLTION OF APU FUEL NOZZLES IAW AMM 49-31-14-400-801, STEP 3G TO END. NO LEAKS NOTED FROM APU FUEL NOZZLES. APU OPS CHECKS NORMAL. 2014-06-10
N529AS BOEING 737890 During LANDING - BOTH PACK LIGHTS ILLUMINATED ON RECALL LANDING CHECK. LIGHTS EXTINGUISH ON RESET OF MASTER CAUTION. ACFT GROUNDED. ACCOMPLISHED FIM 21-62, TASK 801. NO FAULTS NOTED ON EITHER TEMP CONTROLLER. NO HISTORY LAST 30 DAYS. RAN BOTH PACKS.NO FAULT WHILE ADJUSTING ZONE TEMPS. 2014-06-10
N529AS BOEING 737890 During NOT REPORTED - APU INLET TEMPERATURE SENSOR, T2, HAS SUDDEN INCREASE IN CT5ATP. ACFT GROUNDED, 2014-05-22
N529AS BOEING 737890 During NOT REPORTED - CAPTAIN`S FMC CDU DIM MODE FOR ACARS AND OTHER ALERTS INOPERATIVE. ACFT GROUNDED. PERFORMED TEST OF CAPTAIN`S MCDU IAWMM 34-6101-400-802 PARA D.(2) MCDU TESTS NORMAL. BRIGHTNESS AND DIM FUNCTIONS TEST NORMAL FOR BOTH DISPLAY AND KEY PAD.HAD DISPATCH SEND MESSAGE TO AIRCRAFT, MESSAGE RECEIVED NORMALLY, MESSAGE ACKNOWLEDGED BY DISPATCH MCDU OPERATES NORMALLY. 2014-05-12
N529AS BOEING 737890 During LANDING - DURING LANDING, MASTER CAUTION LIGHT ILLUMINATED FOR A RT PACK, EXTINGUISHED WITH RESET. ACFT GROUNDED. IAW FIM 21-62, TASK 801, SHOWS INTERMITTENT RT RAM ACTUATOR FAULT. VERIFICATION TEST OK. FAULT RESET, RT PACK LIGHT REMAINS EXTINGUISHED ON RECALL. 2014-05-12
N529AS BOEING 737890 During INSP/MAINT - APU OIL CONSUMPTION RATE CALCULATED AT .29 QPH THIS IS AN UNSATISFACTORY CONSUMPTION RANGE IAW AMM 49-11-00-710-802. ACFT GROUNDED. WITH APU RUNNING FOR 10 MINUTES, FOUND OIL LEAK, APPROX 20 DROPS IAW MINUTE AT THE WITNESS PORT, COMING FROM THE FUEL CONTROL/LUBE MODULE, REF FIM TASK 49-90-00-810-813. R & R APU FUEL CONTROL UNIT AS REQUIRED. RAN APU, LEAK CHECKED GOOD. NO OIL LEAKS NOTED WHILE RUNNING OR AFTER SHUTDOWN. 2014-04-28
N529AS BOEING 737890 During NOT REPORTED - MAP AND VTK FLAGGED ON CAPTAIN`S ND. BOTH CDUS DISPLAYED NO INFORMATION. SWITCHED FMC TO BOTH ON RT BUT DUAL FMC OPS WAS NOT RESTORED. ACFT GROUNDED. REPLACED RT FMC REF AMM 34-61-02. OPS CHECK GOOD. SUCCESSFUL ETOPS GROUND VERIFICATION. 2014-04-21
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE ANNUNCIATION AFTER ENGINE START. ACFT GROUNDED. NORMAL OPS RESTORED AFTER CHECKLIST PROCEDURE. 2014-04-21
N529AS BOEING 737890 During NOT REPORTED - SINGLE OPERATION DISPLAYED ON SCRATCH PAD. RAN QRH. FIRST TIME RESET. SECOND TIME IT WOULD NOT RESET CONTINUED ON SINGLE FMC OPERATION. ACFT GROUNDED. RT FMC INOPERATIVE IAW CREW. TROUBLESHOT RT FMC REF FIM 34-61, TASK 836. SYSTEM RESET & IS CONSIDERED INTERMITTENT FAULT. OPS CHECK GOOD. REF AMM 34-61-00710-801. OK FOR SERVICE. 2014-04-21
N529AS BOEING 737890 During NOT REPORTED - RIGHT FMC FAILED, QRH PROCEDURE FOLLOWED WITH SINGLE FMC. ACFT GROUNDED. VERIFIED FAULT. CYCLED C/B FOR RT MFC & 10 MIN RT FMC BITE, INOPERATIVE WILL SHOW ON FMC CDU. REPLACED RT FMC WITH SERVICEABLE ONE. ACCOMPLISHED FMC SOFTWARE CROSSLOAD. AFTER CROSSLOAD VERIFIED SOFTWARE CONFIG. CHECK, CHECK SAME. ACCOMPLISHED FMC SYSTEM OPS TEST, TEST PASS REF, MM34-61-02-400-801 & 34-61-00-470-806 & 34-61-00-710-801. 2014-04-21
N529AS BOEING 737890 During TAXI/GRND HDL - CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED ON RECALL DURING LANDING CHECK. ACFT GROUNDED. PERFORMED FIM 21-62-842. TESTSOK. CABIN ZONE TEMP LIGHT STAYS OUT. NO HISTORY 90 DAYS. GROUND VERIFICATION TESTS OK. 2014-04-21
N529AS BOEING 737890 During INSP/MAINT - APU OIL LUBE FILTER HAS CLOGGED INDICATION. ACFT GROUNDED. R & R APU OIL LUBE FILTER IAW AMM 49-91-13-600-801. 2014-04-21
N529AS BOEING 737890 During NOT REPORTED - CAPTAIN`S NAV DISPLAY SHOWED VTK AND MAP. BOTH CDUS DISPLAYED MENU PAGE WITHOUT FMC. RAN FMC FAIL CHECKLIST AND COMPLETED WITH FMC SOURCE ON RT. FMC -LT ON POS SHIFT PAGE IS BLANK. ACFT GROUNDED. REMOVED DISCREPANT LT FMC COMPUTER IAW AMM 34-61-02. INSTALLED SERVICEABLE FMC COMPUTER REF AMM TASK 34-61-02. PERFORM SYS OPS TEST REF AMM TASK 32-61-00-710-801. GROUND VERIFICATION CHECKS SUCCESSFUL. ACFT OK FOR SERVICE. 2014-04-18
N529AS BOEING 737890 During NOT REPORTED - NR 1 SOURCE OFF LIGHT ILLUMINATED, NR 1 GEN DRIVE LIGHT ALSO ILLUMINATED. ACFT GROUNDED. PERFORMED BPCU BITE PROCEDURE24-41, TASK 801. NO FAULTS FOUND. PERFORMED NR 1 ENG GCU BITE PROCEDURE 24-21, TASK 801. NO FAULTS FOUND. ALL SYSTEMSARE GREEN. INSPECTED OIL QTY, GOOD. ACCOMPLISHED GROUND RUN-UP OF NR 1 ENG IDG, FOUND NR 1 IDG DRIVE LIGHT ILLUMINATEDAND NR 1 GEN OFF BUS LIGHT ILLUMINATED. NR 1 IDG TRIP OFF LINE, WHILE NR 1 ENG IS RUNNING. FOUND IDG WAS DISCONNECTEDON THE ENGINE IAW AMM 24-11-00-700-802 AND FIM 24-21 TASK 821. PERFORMED NR 1 IDG DISCONNECT AND CONNECT TEST. ACCOMPLISHED SECOND GROUND RUN-UP, NR 1 IDG OPERATED NORMAL IAW AMM 24-11-00-700-802. REPLACED & TESTED NR 1 ENGINE IDG REF MM 2014-04-11
N529AS BOEING 737890 During NOT REPORTED - CAPT MCDU MESSAGE AND CALL LIGHTS FLICKERED BRIGHT, DIM WITH LIGHTS SWITCH IN DIM THEN STAYED BRIGHT FOR REMAINDER OF FLIGHT. ACFT GROUNDED. REPLACED CAPTAIN`S FMC CDU AND OPS NORMAL REF MM 34-61-01. GROUND VERIFICATION SUCCESSFUL. 2014-04-04
N529AS BOEING 737890 During TAXI/GRND HDL - MAINTENANCE LIGHT ILLUMINATED DURING START. APU PROVIDED POWER BUT THEN DISCONNECTED. APU POWER COULD NOT BE BROUGHT BACK ON LINE. ACFT GROUNDED. R & R & TESTED THE APU SGU IAW 49-41-21/401 & EA 737-49EA-11734. GROUND VERIFICATION OF FAULT RESOLUTION FOUND TO BE SATISFACTORY IAW FIM 49-40, TASKS 807 & 821. 2014-04-04
N529AS BOEING 737890 During DESCENT - NR 2 ENGINE TAIL LIGHT AMBER WHEN ENGINE ANTI-ICE PUT ON AROUND 10000FT ON DESCENT, TURNED GREEN AROUND 2500FT AGL AND STAYED GREEN REST OF FLIGHT. ACFT GROUNDED. REPLACED NR 2 ENGINE TAIL COWL VALVE IAW AMM 30-21-11. ETOPS GROUND VERIFICATION TEST NORMAL IAW MM 30-21-11. 2014-03-25
N529AS BOEING 737890 During NOT REPORTED - CAPTAIN`S MCDU EXEC LIGHT WILL NOT DIM WHEN LIGHTS DIM SWITCHED PLACED TO DIM AND EXECUTE FUNCTION REQUIRED. INTERMITTENTLY FLASHES BETWEEN DIM AND BRIGHT. ACFT GROUNDED. REPLACED MCDU 34-61-01-400-802. VERIFIED S/W CONFIG REF 34-61-00-750-802. 2014-03-18
N529AS BOEING 737890 During NOT REPORTED - CAPTAIN`S FMC EXECUTE BUTTON LIGHT FLASHES WHEN SELECTING DIRECT TO A WAYPOINT WITH LIGHTS TEST SWITCH IN THE RIM POSITION. ACFT GROUNDED. REMOVED CAPTAIN`S CDU TO INSPECT FOR AIRFLOW, NO DEFECTS FOUND. REINSTALLED CDU IAW AMM REF 34-61-01. FLIGHT CREW DEMONSTRATED EXECUTE KEY FUNCTIONS NORMAL. NO HISTORY 30 DAYS, CHECKED GOOD FOR SERVICE. 2014-03-14
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE LIGHT ILLUMINATED. DURING TAXI. ACFT GROUNDED. QRH FMC DISAGREE PROCEDURE ACCOMPLISHED AND MESSAGE CLEARED. 2014-02-12
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE MESSAGE DISPLAYED. ACFT GROUNDED. QRH PROCEDURE COMPLETED, MALFUNCTION CLEARED. 2013-08-23
N529AS BOEING 737890 During TAXI/GRND HDL - LEFT PACK LIGHT ILLUMINATED ON RECALL. CLEARS ON RESET. ACFT GROUNDED. LEFT PACK CONTROLLER LOGGED TCV FAULT. RAN BOTH AUTO TEMP CONTROLLERS BITE TEST AND CLEARED FAULT IAW FIM 21-62, TASK 801. RAN BOTH CONTROLLERS BITE CHECK AGAIN ANDNO FAULT NOTED AFTER. OPS CHECKED GOOD. 2013-08-23
N529AS BOEING 737890 During NOT REPORTED - WEATHER RADAR CONTROL, CAPTAIN`S SIDE UNABLE MANUAL TILT (STUCK -15), AUTO TILT OK, F/O SIDE, ALL OK INCLUDING MANUAL TILT. ACFT GROUNDED. CONFIRMED DEFECT. R & R WEATHER RADAR CONTROL PANEL, OPS CHECKED NORMAL REF MM 34-43-91. 2013-08-13
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER PUSHBACK AND ENGINE START, THE ELEC LIGHT WAS FOUND ILLUMINATED ON RECALL. ACFT GROUNDED. R & R STATIC INVERTERREF MM 24-34-21. 2013-07-19
N529AS BOEING 737890 During TAXI/GRND HDL - ELEC LIGHT ILLUM ON PUSHBACK AFTER ENGINE START. ACFT GROUNDED. PERFORMED FIM TASK 24-31-801 ELECTRIC LIGHT MESSAGE BITE SHOWS FAULT FOR STATIC INVERTER- PERFORMED FIM TASK 24-34-801, STATIC INVERTER INOP. FAILED STEPS FOR A/C POWER CHECK, D46 CONNECTOR- INDICATES BAD STATIC INVERTER. R & R STATIC INVERTER IAW MM 24-34-21, PERFORMED FIM 24-31-801 AND FIM24-34-801. NO FAULTS NOTED. CONFIRMING PART INFORMATION. 2013-07-19
N529AS BOEING 737890 During INSP/MAINT - ON WALKAROUND FOUND SILVER METALIC TAPE HANGING OUT OF APU STARTER/GENERATOR FILTER GROUNDED. REPLACED APU STARTER/GENERATOR IAW AMM TASK 49-41-21-000-801 AND 49-41-21-400-801. GROUND VERIFICATION CHECKED GOOD. 2013-07-17
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE, ACFT GROUNDED. QRH PERFORMED, OPS NORMAL. 2013-07-16
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER START, GOT ELEC LIGHT ON OVERHEAD. NOTICED INVERTER VOLTS CB POPPED P6-5. ACFT GROUNDED. PERFORMED FIM ELEC LIGHT MSG BITE HAVE STATIC INVERTER INOP INTERMITTENT MSG. RESET M1720 INVERTER C/B IAW MM 20-60-01. PERFORMED STBY POWER CK IAW MM 24-34-00 OPS NORMAL. PERFORMED AUX BATTERY CHARGER OPS CK IAW MM 24-31-31. OPS CK NORMAL. PERFORMED FIM ELEC LIGHT MSG BITE, NO FAULTS NOTED. RAN BOTH ENGINES C/B REMAINS SET, NO HISTORY FOR 30 DAYS. TSR ISSUED. REPLACED STATICINVERTER, OPS CHECK NORMAL IAW MM 24-34-21. 2013-06-03
N529AS BOEING 737890 During TAKEOFF - AUTOTHROTTLES KICKED OFF DURING TAKEOFF ROLL. TRIED DURING CLIMB TO RE-ENGAGE BUT THEY KICKED OFF AGAIN AFTER ABOUT 3 SECONDS. ACFT GROUNDED. PERFORMED AUTOTHROTTLE BITE PROCEDURE CURRENT STATUS TEST REF FIM 22-31, TASK 801 AND A/T SERVOMOTOR TEST REF FIM 22-31, TASK 805. ALL TESTS PASSED. PERFORMED SERVO MOTOR TEST SEVERAL TIMES WITH NO FAILURES. 2013-05-16
N529AS BOEING 737890 During TAXI/GRND HDL - NR 1 ENGINE UNUSUALLY SLOW TO START, TOOK APPROX 50 LONGER TO START THAN NORMAL ANS NR 2 ENG. THE TIME FROM ENG START GROUND SELECTION TO N2 ROTATION SLOW. FIRST HALF OF START SEQUENCE SLOW FROM N2 ROTATION TO 12 N2 VERY SLOW. SECOND HALF FROM 12 N2 ROTATION TO 25 N2 ROTATION NORMAL. AFTER START NR 2 ENG PARAMETERS COMPLETELY NORMAL NO OTHER UNUSUAL OBSERVATIONS DURING TAXI- TAKEOFF- CLIMB- OR CRUISE NOTICED. ACFT GROUNDED. VERIFIED ENG NR 1 SLOW TO SPOOL TO 25 ALSO START VALVE SLOW TO OPEN. ACCOMPLISHED FIM TASK 80-05, TASK 806 STEP A TO F3A NO FAULTS. R & R NR 1 ENG STARTER VALVE ASREQUIRED. LEAK CHECKED GOOD REF AMM 80-11-03-400-801-F00. RAN NR 1 ENG. OPS CHECKED GOOD. 2013-05-08
N529AS BOEING 737890 During NOT REPORTED - LIGHT ON CAPTS SIDE WONT DIM ON FMC. ACCOMPLISHED CDU LAMP TEST. OPS GOOD. GROUND VERIFICATION SUCCESSFUL. REF AMM 34-61-01-710-801. 2013-04-16
N529AS BOEING 737890 During NOT REPORTED - WHEN LEVEL CHANGE SELECTED AIRBORNE OR LIGHTS TEST SELECTED AIRBORNE AMBER ACTUATION LIGHT WITHIN THE BUTTON DOES NOT ILLUMINATE. COULD NOT DUPLICATE, ALL MODE CONT PANEL LIGHTS ILLUMINATE WITH LIGHTS TEST AND OPS CKS NORMAL IAW DFCS LIBRARY TEST NR 50. 2013-04-02
N529AS BOEING 737890 During TAXI/GRND HDL - RIGHT PACK LIGHT ILLUMINATES ON RECALL. RESETS ON PUSHING MASTER CAUTION LIGHT. DURING TROUBLESHOOTING OF RT PACK LIGHT FOUND RT RAM AIR ACTUATOR FAILING BITE & MAKING CLUNKING NOISES WHEN REACHING FULL CLOSED POSITION. REPLACED RT RAM AIR INLET ACTUATOR. BITE AND OPS CHECKED GOOD, REF MM 21-51-21. 2013-03-20
N529AS BOEING 737890 During NOT REPORTED - RIGHT PACK READS BELOW 0 TEMP. VERIFIED DEFECT, RT PACK TEMP READS 0 DEG(C) WHILE OPERATING. R & R AIR CONDITIONING MODULE REF MM 21-51-65. GROUND VERIFICATION TEST PASSED. 2013-03-20
N529AS BOEING 737890 During TAXI/GRND HDL - ON RECALL, RT PACK ILLUMINATED, EXTINGUISHES ON MASTER CAUTION RESET. UNABLE TO DUPLICATE DEFECT. NO RT PACK LIGHT ONMASTER CAUTION RECALL AND BITE OF NR 1 AND NR 2 ZONE TEMP CONTROLLERS SHOWED NO FAULTS WITH VERIFY TESTS PASSED. OPERATED BOTH PACKS IAW MM 21-00-00-800-803. PACKS OPERATED NORMALLY WITH NO FAULTS AND AFTERWARDS ZONE TEMP CONTROLLER BITE SHOWED NO FAULTS. 2013-03-20
N529AS BOEING 737890 During TAXI/GRND HDL - LEFT PACK LT ILLUMINATES ON RECALL. INITIAL EVALUATION HAD A TCV FAULT ON NR 1 CONTROLLER. RESET CONTROLLER IAW MM 21-62 TASK 801. FAULT CLEARED. 2013-03-13
N529AS BOEING 737890 During TAXI/GRND HDL - DURING LANDING CHECK, RT PACK ILLUMINATED ON RECALL. RESET SYS AND RAN PACK/ ZONE TEMP CONTROLLER BITE TEST FOR THE RTPACK, GROUND FUNCTIONAL TESTED GOOD IAW AMM 21-61-00-700-806-002. 2013-02-11
N529AS BOEING 737890 During TAXI/GRND HDL - LT PACK LIGHT ILLUMINATES ON RECALL. RESETS WITH MASTER CAUTION RESET. TESTED LT PACK TCV LOGGED AS A FAULT. CLEAREDFAULT AND RE-TESTED IAW AMM 21-61-00. NO FAULTS INDICATED. RAN LT PAC WITH NO PROBLEMS OR FAULTS. NO FAULT HISTORY FOR THE LT SYS WITHIN THE PAST 30 DAYS. 2013-02-08
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER START, & CHECKLIST PERFORMED. MASTER CAUTION AIR CONDITIONING LIGHT ILLUMINATED. RESET WITH MASTER CAUTION. CHECKLIST ACCOMPLISHED. PRIMARY OR SECONDARY TEMP CONTROL INOPERATIVE. RT PACK ZONE TEMP CONTROL BITE LOGS THIS PACK - TCV IN MEMORY. RESET FAULT, RE-RAN BITE, NO FAULTS NOTED. OPERATED RT PACK 15 MINUTES AND ACCOMPLISHED CABIN TEMP CONTROL AND INDICATION. OPS TEST IAW MM 21-61-00-700-807-002. OPS NORMAL. SUBSEQUENT BITE SHOWS NO FAULTS. NO PREVIOUS HISTORY. 2013-01-24
N529AS BOEING 737890 During NOT REPORTED - OFFSET LIGHT ON CAPTS FMC CONTROL PANEL WILL NOT DIM. TESTED CAPTS FMC IAW MM 34-61-00 FMC, LCD CDU, LAMP TEST. SYS OP CHECKED GOOD, NO HISTORY IN THE LAST 60 DAYS. 2013-01-22
N529AS BOEING 737890 During TAXI/GRND HDL - RT SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED WHEN SWITCH MOVED TO ON POSITION. FOUND RT SIDE WINDOW HEAT CIRCUIT BREAKER OUT ON P6-11. INSPECTED CIRCUIT REF WDM 30-41-11, FOUND NORMAL. RESET CIRCUIT BREAKER. GROUND VERIFICATION SUCCESSFUL. SYS TESTS OK, REF FIM 30-41, TASK 806 AND MM 20-60-01. 2013-01-22
N529AS BOEING 737890 During CRUISE - CSS INCOMPLETE WITH FAULT LIGHT, FIRST ATTEMPT, FL 370 -60C. FAULT LIGHT EXTINGUISHED AFTER 5 MINUTES. ATTEMPTED SECOND START FL 320 -55, AGAIN FAILED WITH FAULT LIGHT. NO THIRD START ATTEMPT MADE. APU BITE IAW FIM 49-60, TASK 801 SHOWED NO CURRENT FAULTS. FAULT HISTORY SHOWED FAULT CODE 49-31016 LOGGED FOR STARTS OLD 0 AND 1. ONLY OTHER FAULT WAS 49-11019 AND IT WAS 710 STARTS OLD. FAULT CODE 49-31016 OVERTEMP SHUTDOWN REQUIRES T/S IAW FIM 49-30, TASK 803. PERFORMEDOVERTEMP SHUTDOWN FAULT ISOLATION IAW FIM 49-30 TASK 803. FAULT DID NOT REOCCUR. 2012-12-14
N529AS BOEING 737890 During NOT REPORTED - CAPTAIN FMC LIGHT AND MESSAGE LIGHT WONT DIM. PERFORMED GROUND VERIFICATION, FMC CDU LAMP TEST REF MM 34-61-01. BOTHFMC CDUS EXEC BUTTON AND BACK GND LIGHTS FOR FMC MESSAGES OPS NORMAL IN DIM AND BRIGHT W/P2 PANEL LIGHTS SWITCH. 2012-12-04
N529AS BOEING 737890 During TAXI/GRND HDL - DURING NR 1 ENGINE START, NO N2 FOR APPROX 5-10 SECONDS. ACCOMPLISHED ENGINE RUN, ALL INDICATIONS NORMAL N2 HAD IMMEDIATE RISE REF MM 71-00-00 TEST 3A. 2012-12-04
N529AS BOEING 737890 During TAXI/GRND HDL - NR 1 ENG FUEL VALVE CLOSED LIGHT REMAINS BRIGHT BLUE WHEN START LEVER IN CUTOFF POSTITION. R & R NR 1 ENGINE HMU AMM 73-21-10. PERFORMED IDLE POWER LEAK CHECK GOOD IAW AMM 71-00-00. PERFORMED ACTUATORS TEST AND EEC BITE CHECK REF AMM 71-00-00, NO FAULTS NOTED. 2012-11-14
N529AS BOEING 737890 During TAXI/GRND HDL - NR 1 ENG VALVE CLOSED, LIGHT ILLUMINATED BRIGHT WITH NR 1 START LEVER TO CUTOFF. R & R HPSOV SWITCH IN NR 1 HMU REF MM73-21-09-400-801-F00. ACCOMPLISHED TEST 3A, 12 AND 13, OPS NORMAL REF MM 71-00-00. 2012-11-09
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER START OF NR 1 ENGINE, START VALVE FAILED TO CLOSE FOR LONGER THAN NORMAL. BEFORE FINISHING CHECKLIST, VALVE CLOSEDON ITS OWN. ACFT GROUNDED. FOUND NR 1 ENGINE START VALVE RATCHETING AND WILL NOT SPRING BACK CLOSED SMOOTHLY. R & R NR 1 ENGINE START VALVE REF MM 80-11-03. LEAK & OPS NORMAL REF MM 71-00-00 TEST 1 & 3A. GROUND VERIFICATION SUCCESSFUL. 2012-09-18
N529AS BOEING 737890 During NOT REPORTED - RADAR DISPLAY HAS NUMEROUS SPOKES IN WEATHER MODE, AUTO STAB, TILT NEAR -1 TO 1. ACFT GROUNDED. UNABLE TO DUPLICATE WRITE-UP. WEATHER RADAR SYS OPS CHECKED GOOD IAW MM 34-43-00. 2012-09-17
N529AS BOEING 737890 During TAXI/GRND HDL - DURING INITIAL COCKPIT PREFLIGHT, BLUE ANNUNCIATIOR ENG VALVE CLOSED IS IN BRIGHT ILLUMINATION ONLY. NR 1 ENGINE PRESS TO TEST FUNCTION IS NOT WORKING CORRECTLY. ACFT GROUNDED. VERIFIED DISCREPANCY REF FIM 73-06, TASK 804. FOUND AT NR 1 HMU M1823 PIN 3 MISSING OF HMU SIDE OF CONNECTOR DP1207 SUSPECT PUSHED BACK INTO HMU CONNECTOR. R & R HPSOV SWITCH IN NR1 ENG HMU REF MM 73-21-09-000/400-801-F00. OP CHECKS NORMAL. TEST 3A, 12 AND 13 GOOD REF MM 71-00-00. HMUS QUALIFIED.RESET ENG 1 HPSOV IND C/B. 2012-08-30
N529AS BOEING 737890 During TAXI/GRND HDL - NR 1 ENGINE VALVE CLD LIGHT ON OVERHEAD PANEL IS IN DISAGREEMENT. PERFORMED FIM 73-06-00-810-815-F00, COMPLETED ALL RESISTANCE AND VOLTAGE CHECKS UNDER FAULT ISOLATION PROCEDURE, ALL READINGS GOOD, FIM CALLS OUT THE P5-2 PANEL AT PARAGRAPHE. (6).(C). REPLACED P5-2 FUEL PANEL IAW AMM 28-22-43. ACCOMPLISHED REPAIR CONFIRMAION OPTION 1. RAN BOTH ENGINES ANDCHECKED GOOD IAW FIM 73-06-00-810-815-F00, PARAGRAPH 6 C & D AND PARA F 2A. 2012-08-27
N529AS BOEING 737890 During CRUISE - APU FAULT LIGHT ILLUMINATED ON 2 ATTEMPTED CSS STARTS AT FL 370. APU STARTED ON 3RD ATTEMPT AT FL300. ACFT GROUNDED. APU BITE SHOWED TWO FAILED START ATTEMPTS WITH OVERTEMP SHUTDOWN MAINT MSGS 49-31016 LOGGED. PERFORMED TWO STARTS FOR GROUND VERIFICATION, BOTH WITH A MAX TEMP OF 820 DEGREES. COMPLIED WITH FIM 49-30-00-810-803, DETERMINED FAULT WAS INTERMITTENT FAULT. COMPLIED WITH APU START & OPS TEST IAW AMM 49-11-00, OPS CHECKED GOOD. REMOVED AND REPLACED T2 SENSOR AND CLEANED INLET PRESSURE SENSOR. REF MM 49-61-31 AND 49-52-31 AND FAULT CLEARED. OPS CHECKED NORMAL. 2012-08-23
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE ON TAXI OUT. ACFT GROUNDED. ACCOMPLISHED QRH PROCEDURE. OPS NORMAL. 2012-08-13
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE LIGHT ON GROUND. ACCOMPLISHED QRH PROCEDURE. OPS NORMAL. 2012-07-20
N529AS BOEING 737890 During INSP/MAINT - HIGH PRESSURE CONNECT ACCESS DOOR OTBD LATCH LOCATION FWD LWR CHORD WEAR NOTED. ACFT GROUNDED. REMOVED STOP PAD AND FOUND .040 DEEP WEAR AT PAD LOCATION IN CHORD UPPER SURFACE OUT OF LIMITS IAW SRM 53-40-71, AD 1, DETAIL C. ACCOMPLISHED HFEC OF AFFECTED AREA POST BLEND OUR REF EA 800, 53EA PRLIM SET 2 NO FUTHER DAMGE NOTED. ACCOMPLISHED EA 800, 53EA, 08024ALL STEPS FOR RT ECS HIGH PRESSURE DOOR LATCH WEAR ON CHORD. 2012-07-16
N529AS BOEING 737890 During TAXI/GRND HDL - FMC DISAGREE WARNING ANNUNCIATED ON ND ON GROUND. ACCOMPLISHED QRC PROCEDURES FMC RESTORED. 2012-07-12
N529AS BOEING 737890 During NOT REPORTED - F/O "COURSE" WINDOW ON AUTOPILOT MODE CONTROL PANEL IS BLANK. FOUND MCP DC 1 CIRCUIT BREAKER OPEN. RESET CIRCUIT BREAKER SYS, TESTED GOOD REF 22-00-01-730-801. ACFT REMAINS CAT IIIA A/L & HGS QUALIFIED. 2012-07-09
N529AS BOEING 737890 During CLIMB - ON CLIMBOUT, DUCT SPLIT 20 PSI FOR DIFFERANCE AND 18 PSI MIN. RT SIDE IS LOW LT SIDE NORMAL. CRUISE GIVES NORMAL INDICATIONS. LT SIDE DURING CLIMB 38, RT SIDE 18. CRUISE, RT SIDE 38, LT SIDE 36. N1 AT 88.9, RT WAS 30, LT WAS 36. SUBSEQUENT FLIGHTS RT BLEED LIGHT CAME ON. ACFT GROUNDED. PERFORMED FIM TASK 36-10-00-810-809, FOUND PRECOOLER CONTROL VALVEBAD. R & R PRECOOLER CONTROL VALVE IAW AMM 36-12-02. OPS / LEAK CHECK GOOD. 2012-07-05
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER ENGINE START & TAXI OUT, FMC DISAGREE LIGHT ON. ACFT GROUNDED. ACCOMPLISHED QRH PROCEDURE. OPS NORMAL. 2012-07-05
N529AS BOEING 737890 During CRUISE - AT FL390 CABIN DIFF 8.40 8.60 PSI CAB ALT 7500FT/ DUCT PRESS: L=42PSI R=30PSI AT 89.6% N1 DESCENDING THRU FL370 CABIN DIFF 8.30 PSI CAB ALT 7000FT/1000 FPM VSI/ DUCT PRESS: L=30 R=30 AT 80.6% LEVEL AT FL350 CABIN DIFF 8.30 PSI CABIN ALT6500FT/ DUCT PRESS: L=40 PSI R=45 PSI AT APPR 88% N1. EXISTING FAULTS OR FAULT HISTORY ON NR 1 AND NR 2 DCPC REF AMM 2131 00 810 801 AND 21 31 00 810 816. PERFORMED PRESS SYS MANUAL MODE TEST 21 31 00 710 801 OPS CHECK GOOD. PERFORMED PRESS SYS GROUND TEST ON CPC1 AND CPC2 21 31 00 700 802, OPS CHECK GOOD. ALL DUCT PRESSURES WITHIN LIMITS REF AMM 36 1100 P/B 501. 2012-06-19
N529AS BOEING 737890 During INSP/MAINT - APU CT5 ATP EGT HAS HISTORY OF INDICATING HIGH AND ERRONEOUS. INDICATION ERRORS ARE SUSPECT. REMOVED AND REPLACED INLET TEMP SENSOR T2. INSTALLATION TEST GOOD AND BITE TEST GOOD. REF AMM 49 61 31 49 61 00. 2012-06-14
N529AS BOEING 737890 During TAXI/GRND HDL - LEFT PACK LIGHT ILLUMINATES DURING MASTER RECALL. QRH FOLLOWED. RESET WITH MASTER RESET. ACCOMPLISHED PACK/ZONE TEMPCONTROL BITE PER 21 61 00, OPS CHECK NORMAL. GRD VERIFICATION SUCCESSFUL. 2012-05-23
N529AS BOEING 737890 During TAXI/GRND HDL - AFTER ENGINE START WHEN PRESSING RECALL L PACK LIGHT ILLUMINATED AND "AIR COND" ON MC PANEL. NR 1 ZONE/TEMP CONTROLLERFAULTED TCV. RESET FAULT. ACCOMPLISHED NR 1&2 ZONE TEMP CONTROLLER BITE TEST REF PLACARD. NO FAULTS. NO FAULTS ON RECALL. 2012-04-09

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Aviation Datasets Explained


Aircraft Lookup allows anyone to quickly search public datasets published by various aviation administrative services as well as marketplaces and other private aviation data providers in the United States. These datasets provide valuable insight into the history and maintenance record of any aircraft registered in the US. When you provide an N-Number above, we cross reference historical SDR, FAA, and NTSB datasets to identify any relevant records related to that N-Number.

As you may be aware, N-Numbers are not connected to an aircraft for the life of that aircraft - N-Numbers may be deregistered, and re-registered to completely different aircraft. For that reason, please confirm that the details of any search result correspond to the make and model you intended to pull records for.

SDR, FAA, and NTSB databases are provided as follows:

The Service Difficulty Reports (SDR) dataset is defined as "[t]he reports submitted by certificate holders and certificated repair stations, known as service difficulty reports (SDR's), provide the FAA with airworthiness statistical data necessary for planning, directing, controlling, and evaluating certain assigned safety-related programs." This data is, in its raw form, a tab-delimited file with encoded field headers.

The FAA Registration dataset is fairly straightforward - it is a listing of current registrations (along with addresses, aircraft serial number, and other basic metadata) at any point in time. The registration data is a comma delimited file that has named fields at the top of each file. The FAA provides historical data on their site for the previous few years.

The FAA Accident/Incident dataset covers a range of accidents and incidents that may or may not overlap with NTSB data. Typically, more significant crashes are covered by NTSB data while less significant crashes are more comprehensively covered by the FAA Accident/Incident data, which will frequently include minor events like gear-up landings and so forth. The data provided by the FAA is in a tab-delimited file with encoded field headers.

The NTSB investigation dataset is distinct from the FAA dataset. While the number of accidents or incidents they cover are less numerous, the depth at which they are covered is significantly deeper when reported by the NTSB. While each record from the NTSB contains incredible amounts of metadata related to people responsible for the flight, prevailing meteorological conditions at the time of flight, and passengers aboard, this aircraft lookup tool only provides basic summary data. The full dataset is provided as a series of Microsoft access file databases on the NTSB site.