Aircraft Report for n448as



Registration History for n448as







N-Number Make Model Serial Location Description Time
N448AS BOEING 737-990ER 36356 SEATTLE, WA Aircraft registered to ALASKA AIRLINES INC, airworthiness date 2016-03-30, expiration date 2025-04-30, serial number 36356. 2021-11-12
N448AS BOEING 737-990ER 36356 SEATTLE, WA Aircraft registered to ALASKA AIRLINES INC, airworthiness date 2016-03-30, expiration date 2022-04-30, serial number 36356. 2018-11-14
N448AS BOEING 737-990ER 36356 SEATTLE, WA Aircraft registered to ALASKA AIRLINES INC, airworthiness date 2016-03-30, expiration date 2019-04-30, serial number 36356. 2016-04-01
N448AS BOEING 737-990ER 36356 SEATTLE, WA Aircraft registered to ALASKA AIRLINES INC, airworthiness date 2016-03-30, expiration date 2019-04-30, serial number 36356. 2016-04-01
N448AS DASSAULT AVIATION FALCON 2000EX 233 DANBURY, CT Aircraft registered to GENERAL ELECTRIC CREDIT CORP OF TN, airworthiness date 2011-12-13, expiration date 2017-11-30, serial number 233. 2014-11-03
N448AS DASSAULT AVIATION FALCON 2000EX 233 SALT LAKE CITY, UT Aircraft registered to WELLS FARGO BANK NORTHWEST NA TRUSTEE, airworthiness date 2011-12-13, expiration date 2014-12-31, serial number 233. 2012-04-11

Accident History for n448as


N-Number Make Model Location Description Time
N448AS BOMBDR BD1001A10 SEATTLE, WA (-23) WHILE ATTEMPTING TO PARK THE AIRCRAFT BETWEEN TWO HANGARS, THE AIRCRAFT STRUCK A PARKED UNOCCUPIED VEHICLE WITH ITS WING TIP. NEITHER PILOT HAS BEEN OR MADE THEMSELVES AVAILABLE FOR A TELEPHONE INTERVIEW. 2006-09-01

Service Difficulty Reports for n448as




























































































































N-Number Make Model Serial Description Time
N448AS BOEING 737990ER During NOT REPORTED - PILOTS FWD WINDOW HEAT OVERHEAT LIGHT ILLUMINATE. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 30-41-801 WHCU BITE PROCEDURE NO FAULTS FOUND ON BITE PROCEDURE L FWD WINDOW HEAT NORMAL. FOUND CB POPPED. 2022-11-30
N448AS BOEING 737990ER During INSP/MAINT - WHILE ACCOMPLISHING OF T/C #78472010, FAN BLADE LUBRICATION, FOUND #17 FAN BLADE SPACER W/ DISBONDED ELASTOMER. REQUIRESREPLACEMENT. GROUNDED - YES. DURING ACCOMPLISHMENT OF T/C #78472010, REPLACED #17 FAN BLADE SPACER. COMPLETED T/C WITHNO FURTHER DEFECT NOTED. 2022-09-30
N448AS BOEING 737 During TAXI/GRND HDL - FWD CARGO FIRE LIGHT DID NOT TEST PROPERLY FIRST THREE ATTEMPTS. GROUNDED - YES. PERFORMED B737-900 FIM 26-23 TASK 801 FWD (M2236) CEU BITE TEST PASSED W/ NO FAULTS FOUND AT THIS TIME. 2022-09-12
N448AS BOEING 737990ER During NOT REPORTED - CARGO CPT FIRE DETECT FAULT LIGHT & FWD WOULD NOT ILLUMINATE. GROUNDED - YES. REMOVED AND REPLACED CARGO FIRE CONTROL PANEL. REF B737-900 AMM 26-00-02/401. 2022-09-08
N448AS BOEING 737 During NOT REPORTED - #2 HF RADIO DOES NOT TRANSMIT. RECEIVES NORMALLY. GROUNDED - YES. REPLACED #2 HF TRANSCEIVER REF B737-900 AMM 23-11-21.OPS CHECKS GOOD. 2022-09-06
N448AS BOEING 737990ER During INSP/MAINT - WHILE ACCOMPLISHING ASA T/C #78472010, FAN BLADE LUBRICATION, FOUND #4 SPACER W/ DISBONDED ELASTOMER. REQUIRES REPLACEMENT. GROUNDED - YES. REPLACED #4 SPACER REF ASA T/C 78472010. 2022-08-30
N448AS BOEING 737990ER During NOT REPORTED - RIGHT HAND PACK LIGHT ILLUMINATES ON RECALL AND RESETS WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED RH TRIM MODULATING VALVE REF B737-900 AMM 21-51-10. 2022-08-30
N448AS BOEING 737990ER During NOT REPORTED - RH PACK LIGHT ILLUMINATED ON MASTER CAUTION RECALL. RESET WITH MC RESET. GROUNDED - YES. ACCOMPLISHED BITE ON BOTH TEMPCONTROLLERS REF B737-900 FIM 21-61 TASK 801.FOUND #2 CONTROLLER TEMP CTRL VALVE FAULT 21-51267 PACK TCV & TEMP CNTRL VALVE 21-51264 TCV STAYING CLOSED). REMOVED R/H PACK TEMP CNTRL VALVE CANNON PLUG & CLEANED, REINSTALLED. CLEARED FAULTS &RETESTED, OPS CHECKS NORMAL. 2022-08-15
N448AS BOEING 737990ER During NOT REPORTED - #2 HF RADIO DOES NOT TRANSMIT. RECEIVES NORMALLY. GROUNDED - YES. ON DEFERRAL. 2022-08-02
N448AS BOEING 737990ER During TAXI/GRND HDL - FWD CARGO FIRE LIGHT DID NOT TEST PROPERLY FIRST THREE ATTEMPTS. GROUNDED - YES. ON DEFERRAL. 2022-08-02
N448AS BOEING 737990ER During TAXI/GRND HDL - ENG 1 START VALVE OPEN LIGHT REMAINED ON DURING ENG START. RAN QRH PROCEDURE + SHUT DOWN. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE START VALVE REF B737-900 AMM 80-11-03-400-801-F00. OPS AND LEAK CHECKS GOOD. 2022-07-28
N448AS BOEING 737990ER During CLIMB - CABIN CLIMB RATE ON PRESSURIZATION FLUCTUATED UP/DOWN ENTIRE FLIGHT. CABIN RATE +/- 100 FPM UP TO +300 FPM WITH ADDITIONOF THRUST AND -500 FPM WITH THRUST REDUCTION. DURING CLIMB DUCT PRESS SPLIT +/- 10 PSI WITH MAX SPLIT OF +/- 15 PSI INCRUISE WITH LARGE POWER REDUCTION. CABIN ALTITUDE AND DIFFERENTIAL WERE STEADY DURING CRUISE OPERATING NORMALLY. GROUNDED - YES. PERF'D BITE PROCEDURE PER B737-900 FIM 21-31 TASK 801 NO FAULTS PRESENT. PER PHONE CALL W/ CREW VERIFIED RIGHTDUCT PRESS WAS FLUCTUATING WITH DUCT SPLITS C/W ASA T/C NG-36WC-00001 NO DEFECTS NOTED C/W #1 ENG BLEED T/C NG-36WC-0001FOUND #1 ENG HIGH STAGE REG FAILING REPLACED PER B737-900 AMM 36-11-07 REPLACED HIGH STAGE VLV PER AMM 36-11-06 BOTH CK 2022-05-11
N448AS BOEING 737990ER During TAXI/GRND HDL - #1 ENGINE FIRE DETECTION LOOP A IS INOPERATIVE. ("A" LOOP DOESN'T TEST AND FAULT LIGHT ILLUMINATED). GROUNDED - YES. REFTSR711760, 2 DECTECTOR HARNESS & FAN LOOP ASSY REPLACED & OPS TEST NORMAL 2022-04-05
N448AS BOEING 737990ER During NOT REPORTED - RT PACK LIGHT ILLUMINATED ON RECALL. GROUNDED - YES. REMOVED & REPLACED TCV REF B737-900 AMM 21-51-10-400-801. ACCOMPLISHED PFTC BITE REF AMM 21-61-00-740-801-002. OP CK GOOD WITH NO FAULTS. GROUND VERIFICATION SUCCESSFUL. 2022-03-24
N448AS BOEING 737990ER During TAXI/GRND HDL - ON RECALL AFTER ENGINE START CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED. RESET WITH MASTER CAUTION RESET. GROUNDED - YES.BOTH PFTC'S GROUND TEST PASS, NO EXISTING FAULTS. FAULT HISTORY SHOWS INTERMITTENT FAULT 21-51117, 21-51123 "PFTC CTRLINOP" ON LEG 09. CABIN TEMP AND INDICATION GROUND VERIFICATION SUCCESSFUL B737-900 AMM 21-61-00-700-807-002. 2022-03-24
N448AS BOEING 737990ER During TAXI/GRND HDL - ON RECALL AFTER ENGINE START FWD CABIN ZONE TEMP LIGHT ILLUMINATED, RESET WITH MASTER CAUTION RESET. GROUNDED - YES. BOTH PFTC'S GROUND TEST PASS, NO EXISTING FAULTS. FAULT HISTORY SHOWS INTERMITTENT FAULT 21-51117, 21-51123 "PFTC CTRL INOP" ON LEG 09. CABIN TEMP CONTROL AND INDICATION GROUND VERIFICATION SUCCESSFUL B737-900 AMM 21-61-00-700-807-002. 2022-03-24
N448AS BOEING 737990ER During TAXI/GRND HDL - R2 WINDOW HEAT OVERHEAT LIGHT ILLUMINATED AFTER PUSHBACK. GROUNDED - YES. PERFORMED WHCU BITE TEST NO FAULT NOTED B737-900 FIM 30-41 TASK 801, WINDOW HEAT SYSTEM OPS TEST NORMAL B737-900 AMM 30-41-00-710-801, WINDOW SENSOR & FILM RESISTANCETESTS WITHIN LIMIT AMM 30-41-21 & B737-900 WDM 30-41-11-4, UNABLE TO DUPLICATE DISCREPANCY AND NO MX HISTORY 60 DAYS, REPLACED R2 WINDOW HEAT COIL CORD FOR PRECAUTION & OPS TEST NORMAL. 2022-03-24
N448AS BOEING 737990ER During NOT REPORTED - HF #2 SHOWS FAIL / FAIL. GROUNDED - YES. CYCLED C/B, SYS RESTORED & OPS CKS NML PER B737-900 AMM 23-11-00 AND COMM CK. GND VERIFICATION SUCCESSFUL. 2022-03-24
N448AS BOEING 737990ER During NOT REPORTED - SAME ISSUE AS LO 60259389 +/-3 PSI DUCT PRESSURE OSCILLATION AND CABIN RATIO OSCILLATION +/-3. GROUNDED - YES. C/W PACKFLOW TEMPERATURE CONTROLLER BITE REF B737-900 AMM 21-61-00-740-801-002, NO EXISTING FAULTS FOUND, HISTORY SHOWS FLOW CONTROL VALVE FAULT # 21-51253. NO HARD FAULTS NOTED. REPLACED RIGHT PACK FLOW SENSOR PER AMM 21-51-43, OPS AND LEAK CHECKOK. REMOVED AND REPLACED RIGHT FLOW CONTROL AND SHUTOFF VALVE PER AMM 21-51-01-000-807-003 / 21-51-01-400-806-003. OPS CHECKED AND LEAK CHECKED GOOD. 2022-03-24
N448AS BOEING 737990ER During INSP/MAINT - FWD CARGO TRANSITION PNL LBL 21 CORRODED BETWEEN STA 500C + 16 TO STA 500L. GROUNDED - YES. REPAIRED FWD CARGO TRANSITION PNL AT LBL 21 BETWEEN STA 500C+16 TO STA 500L IAW B737-900 SRM 53-00-53-2R-5 DUE TO TRANSITION HAVING 100% MAT LOSS. 2022-03-22
N448AS BOEING 737990ER During INSP/MAINT - AFT CARGO SHEILD AT RBL 21 CORRODED BETWEEN STA 767 TO STA 792. GROUNDED - YES. BLENDED CORROSION FOUND TO BE OUT OF LIMITS IAW B737-900 SRM 53-60-15-1A-1 REPLACED SHEILD IAW B737-900 SRM 51-40-02-0G-0. 2022-03-22
N448AS BOEING 737990ER During INSP/MAINT - BOTH AFT (L2 AND R2) EMERGENCY BATTERIES TEST BAD. GROUNDED - YES. REMOVED AND REPLACED LEFT AND RIGHT AFT BATTERY PACKSAND POWER SUPPLIES, S/N 414761 & S/N 412851. OPS CK GOOD IAW B737-900 AMM 33-57-06-960-805 STEPS 4.E(1-3(E))(4-6), F(4)AND AMM 33-51-06-960-806 STEP 5.E(1-3(E)), (4-5), F(4). 2022-03-22
N448AS BOEING 737990ER During INSP/MAINT - MULTIPLE BULBS OUT IN AFT GALLEY EMERGENCY LIGHT PANELS. GROUNDED - YES. RELAMPED AFT GALLEY EMERGENCY EXITS SIGNS OPS CHECK GOOD IAW B737-900 AMM 33-51-01-960-801. 2022-03-22
N448AS BOEING 737990ER During INSP/MAINT - WHEN EMERGENCY EXIT LIGHTS ON WITH NO AC POWER ON 3 MID CABIN LIGHTS EXTINGUISHED AND 1 OVERWING AC-R EXTINGUISHED 20 SEC AFTER INITIAL ILLUMINATION. GROUNDED - YES. REMOVED AND INSTALLED SERVICEABLE POWER SUPPLY & BATTERY PACK ASSY OPS CHECK GOOD IAW B737-900 AMM 33-51-06-860-806. 2022-03-22
N448AS BOEING 737990ER During INSP/MAINT - AFT CARGO TRANSITION AT RBL-21 CORRODED MULTIPLE AREAS BETWEEN STA 727I+8 TO STA 767. GROUNDED - YES. REPAIRED AFT CARGOTRANSITION AT RBL-21 BETWEEN STA 727I+8 TOS STA 767 IAW B737-900 SRM 53-00-53-2R-5 CORROSION FOUND TO BE OUT OF LIMITSIAW B737-900 SRM 53-00-53-1A-2W= 1.4" O= .040 R= .033 L= 14" D= .007. 2022-03-21
N448AS BOEING 737990ER During INSP/MAINT - FOLLOW UP TO HISTORY OF LEFT PACK LIGHT ILLUMINATING ON MASTER CAUTION RECALL WITH SUCCESSFUL RESET. GROUNDED - YES. FOUND FAULT CODE 21-51406 SRADA EXIT IN FAULT HISTORY ON 5+ PREVIOUS LEGS INCLUDING 00. PERFORMED GVI OF L/H PACK RAM AIR SYS. AND HEAT EXCHANGERS. NO BLOCKAGE FOUND. FOUND EXHAUST SRADA FAULTING THE INLET ACTUATOR. REPLACED THE INLET SRADA PER B737-900 AMM 21-51-21-400-801 UP TO STEP J(10). ACCESS PANEL 191FL REMOVED. COMPLETED INSTALLATION OF RAM AIR INLET ACTUATOR REF MM 21-51-21-400-801. OPS CK GOOD. COMPLETED STEP 4 OF TSR, NO DEFECTS NOTED. FOUND L/H INLET DOOR TIE ROD RODENDS AND BELLCRANK PARTIALLY SEIZED AND DRAGGING, CLEANED AND LUBED. DEFLECTOR DOOR OUT OF ADJUSTMENT, ADJUSTED, OPS NO 2022-03-04
N448AS BOEING 737990ER During NOT REPORTED - LEFT PACK LIGHT ILLUMINATED ON RECALL. EXTINGUISHED WHEN MASTER CAUTION RESET BUTTON WAS PUSHED. GROUNDED - YES. PERFORMED PACK FLOW TEMPERATURE CONTROLLER BITE PER B737-900 AMM 21-61-00-740-801-002 FAULTS EXIT SRADA ACTUATOR. REMOVED LH RAM AIR EXHAUST ACTUATOR PER AMM 21-51-27-000-801. INSTALLED RAM AIR EXHAUST ACTUATOR PER AMM 21-51-27-400-801. PERFORMEDINSTALLATION TEST PER SAME, INSTALLATION TEST PASSED. 2022-03-03
N448AS BOEING 737990ER During NOT REPORTED - L "PACK" DURING RECALL, RESET WITH MASTER CAUTION DURING QRH. GROUNDED - YES. REMOVED AND REPLACED LH PACK AIR MODULATING VALVE PER B737-900 AMM 21-61-21-400-801. OPS CK GOOD. 2022-02-17
N448AS BOEING 737990ER During CLIMB - LOST RIGHT FMC IN FLIGHT (1 HOUR INTO FLIGHT) FOLLOWED QRH & WE STAYED IN SINGLE FMC (LEFT ON, BOTH ON LEFT). GROUNDED -YES. RELEASED PER MEL 34 -36J RIGHT HAND FMC INOP AUTHORIZED BY SEAMC DAN @ 0015Z.ENROUTE MEL - ACCOMP B737-900 FIM TASK 34-61 #836 SYS RESTORED. SYS OPS CKS NM PER 34-61-00, GND VERIFICATION SUCCESSFUL. THIS CLEARS MEL 34-36J, FLT CREW PLACARD REMOVED. 2022-01-25
N448AS BOEING 737990ER During INSP/MAINT - ON PDC WALK AROUND FOUND A FUEL LEAK #2 ENGINE. GROUNDED - YES. PERFORMED ENG VENTS AND DRAIN INSPECTION ON #2 ENGINE.REF B737-900 AMM 71-71-00-200-801-F00. FOUND HPTACC LEAKING FUEL 60 DROPS A MINUTE. RUN #2 ENG. IDLE POWER FOR 5 MINUTES. NO LEAK FOUND AFTER ENGINE RUN. REPLACED #2 ENG HPTACC REF AMM 75-21-01. OPS CHECK GOOD, NO LEAKS DETECTED. 2022-01-10
N448AS BOEING 737990ER During CLIMB - AUTO PILOT "A" WILL NOT STAY ENGAGED. GROUNDED - YES. ACCOMPLISHED DFCS BITE PROCEDURE REF B737-900 FIM 22-11 TASK 801 FOR CHANNEL A. BITE TESTS PASSED. NO ACTIVE FAULTS IN CURRENT STATUS CHECK. THE 2 FAULTS THAT WERE STORED IN HISTORY ALLPASSED LRU TESTS RELATED TO THEM. NO HISTORY OF THIS FAULT HAS BEEN RECORDED IN THE LAST 60 DAYS. NO FAULTS ARE CURRENTLY PRESENT. ACCOMPLISHED SURFACE AND INTERACTIVE TESTS, WHICH BOTH PASSED, REF FIM 22-11 TASK 801. THE FIM HAS BEEN EXHAUSTED AT THIS TIME. THIS WILL CLEAR BOTH MELS 22-1F FOR THE AUTOPILOT BEING INOP AND THE 22-99B FOR THE AUTOLAND NOT AUTHORIZED DUE TO INOP EQUIPMENT. 2021-12-23
N448AS BOEING 737990ER During CRUISE - AUTOPILOT A DISENGAGED IMMEDIATELY AFTER SELECTION 4 TIMES DURING FLIGHT, AUTOPILOT B OPERATION WAS NORMAL. GROUNDED - YES. (RESOLVED ON W/O: 1882673 TASKCARD: N/R-00001 ) REMOVED AND REPLACED AILERON ACTUATOR FOR CHANNEL "A" AUTOPILOT IAWB737-900 AMM 22-11-25-000/400-801. PERFORMED AILERON ADJUSTMENT IAW AMM 22-11-25-820-801. ALL AUTOPILOT AILERON RIGGINGWITHIN LIMITS. PERFOREMD DFCS LIBRARY 31 IAW AMM 22-11-25-710-801. ALL TESTS PASS. THIS CLEARS MEL 22-1F FOR CHANNEL A AND MEL 22-99B. PLACARDS REMOVED. NO A/C CONFIG CHANGES. 15 CB PULLED, COLLARED, AND RESET PER AMM. SEAMC SCOTT NOTIFIED. 2021-08-26
N448AS BOEING 737990ER During NOT REPORTED - L ALPHA VANE ILLUMINATED. GROUNDED - YES. RELEASED PER MEL 30-8B LEFT ALPHA VANE HEAT INOP. INITIAL T/S FND LFT ALPHA VANE C/B OPEN. OPENED PANEL AND GVI BACK OF C/B. NO PROBLEMS FND. CLOSED PANEL AND C/B. DID B737-900 FIM 30-31 TASK 804.TURNED ON PITOT HEATERS- LEFT VANE LIGHT WENT OUT. HEATED FOR 30 MIN WITH NO FAULTS. REPAIR CONFIRMATION AND ETOPS GND VERIFICATION IS NML. REF FIM 30-31 TASK 804. RMVD CREW MEL INOP PLACARDS, C/N 06018448. NOTIFIED ARNIE SEAMC. C/B'S CONFIRMED CLOSED. NOTE: ALSO REMOVED FROM MEL 30-8B WITH NO SPECIAL PROCEDURES. 2021-08-10
N448AS BOEING 737990ER During CRUISE - AUTOPILOT A WILL NOT REMAIN ENGAGED. GROUNDED - YES. REMOVED AND REPLACED AILERON POSITION SENSOR IAW B737-900 AMM 22-11-29-000-801 AND AMM 22-11-29-400-801 AND ADJUSTED IAW AMM 22-11-29-820-800, OPS CHECK GOOD. THE LMM TESTS AND LLM STATUSOF AIRCRAFT AND THE ROTABLE PART CHANGE FOR THE NEW AILERON POSITION SENSOR WILL BE DOCUMENTED ON LOG PAGE 60192502. CLEARS MELS 22-1F, 22-4B, AND 22-99, CONTROL NUMBER 15062448 REMOVED, SEAMC DAN NOTIFIED, NO AIRCRAFT CONFIGURATION CHANGE. 2021-06-03
N448AS BOEING 737990ER During TAXI/GRND HDL - R FORWARD WINDOW HEAT OVERHEAT LIGHT ILLUMINATED AT GATE. GROUNDED - YES. FOUND LRU FAULT DURING BITE PROCEDURE. REMOVEDAND REPLACED WINDOW HEAT LRU. REF B737-900 AMM 30-41 TASK 801. OK FOR SERVICE. BITE PROCEDURE PASSED. 2021-03-18
N448AS BOEING 737990ER During CRUISE - DURING CRUISE AT FL 360 CABIN RATE OF CLIMB CYCLES FROM +400 TO -300 FPM EVERY 3O SECONDS. THE CABIN PRESSURE DIFFERENTIAL AND CABIN ALTITUDE DO NOT FLUCTUATE. WE TRIED TO ALTERNATE CONTROLLER AND THE RATE OF CLIMB CYCLE REMAINED UNCHANGED. DUCT PRESSURE WAS ALSO STABLE AT 40PSI DURING CRUISE. GROUNDED-YES. BITE CHECK OF PFTC 1 & 2 AND DCPC 1 & 2 SHOW NO CURRENT FAULTS OR FAULT HISTORY ON LAST LEG, REF B737-900 AMM 21-61-00/501 AND B737-900 FIM 21-31 TASK 801. COMPLETEDFIM 21-33 TASK 802 STEPS A-C(1B). REMOVED AND REPLACED RT TEMP CONTROL VALVE, REF B737-900 AMM 21-51-10-000-801 AND AMM 21-51-10-400-801. OPERATIONS TEST AND LEAK CHECK GOOD. REMOVED AND REPLACED LT TEMP CONTROL VALVE, REF AMM 21-51-10- 2021-01-06
N448AS BOEING 737990ER During CLIMB - LEFT FORWARD WINDOW HEAT LIGHT ILLUMINATED ON CLIMB OUT. PERFORMED QRH PROCEDURE AND LIGHT REMAINED EXTINGUISHED UNTILAFTER LANDING SEATTLE. AFTER LANDING, LEFT FORWARD WINDOW HEAT ILLUMINATED AGAIN. GROUNDED-YES. REMOVED AND REPLACED LEFT FORWARD WINDOW (L1), REF B737-900 AMM 56-11-11/401. LEAK AND OPERATIONS CHECK PASSED. 2020-11-25
N448AS BOEING 737990ER During TAXI/GRND HDL - L1 WINDOW OVERHEAT ON GROUND 16 DEGREES C OUTSIDE TEMP. GROUNDED-YES. BITE CHECKED M321 WHCU. LT FRONT FAULT FAULTS SENSOR, REF B737-900 FIM 30-41 TASK 801 REF FIM 30-41 TASK 812 & B737-900 AMM 30-41-11. SELECTED OVERRIDE MODE UTILIZINGTHE SPARE SENSOR. BITE CHECK NOW GOOD. ETOPS GROUND VERIFICATION TEST PASS. 2020-11-20
N448AS BOEING 737990ER During CLIMB - AT TOP OF CLIMB " R SIDE WINDOW OVERHEAT ILLUMINATED" COMPLIED WITH QRH. OPS NORMAL THEREAFTER. GROUNDED - YES. ACCOMPLISHED WHC BIT PER B737-900 AMM 30-41-00 WITH NO FAULTS. CHECKED TERMINAL FOR CORROSION WITH NO FAULTS FOUND OPS CHECK GOOD. 2020-06-24
N448AS BOEING 737990ER During INSP/MAINT - WHILE ACCOMPLISHING T/C 78472010 #2 ENGINE FOUND 5 SPACERS WITH ELASTROMERIC MATERIAL DISBONDED. GROUNDED - YES. REPLACED SPACERS WHILE ACCOMPLISHED T/C 78472010 FAN BLADE LUBE OF #2 ENG. 2020-06-02
N448AS BOEING 737990ER During CLIMB - SECOND WRITE UP OF RIGHT SIDE WINDOW HEAT OVERHEAT ILLUMINATED AND EXTINGUISHED PER QRH IN CLIMBOUT. GROUNDED - YES. ACCOMPLISHED WINDOW HEAT CONTROL UNIT BITE PROCEDURE REF B737-900 FIM 30-41 TASK 801. FOUND ON NO1 WHCU WINDOW #1 P5-9 FAULT AND ON NO2 WHCU WINDOW #2 P5-9 FAULT. INITIATED B737-900 FIM 30-41 TASK 813. REMOVED AND REPLACED P5-9 PANEL REF B737-900 AMM 30-41-41/401 OPC GOOD. PITOT PROBE, AOA SENSOR AND TAT PROBE HEATER SYSTEM AMM TASK 30-31-00-730-801 PASSED. ACCOMPLISHED BITE OPC GOOD. GROUND VERIFICATION SUCCESSFUL. 2020-05-28
N448AS BOEING 737990ER During NOT REPORTED - RIGHT SIDE WINDOW HEAT OVERHEAT ILLUMINATED AND EXTINGUISHED WHEN RESET PER QRH. GROUNDED - YES. PERFORMED OPS CHECK WINDOW HEAT REF B737-900 AMM 30-41-11 OPS CHECK NORMAL. 2020-05-26
N448AS BOEING 737990ER During CRUISE - AFTER 5-10 MIN IN CRUISE FLIGHT AT FL 340, R SIDE WINDOW HEAT ANNUNCIATOR ILLUMINATED. FOLLOWED QRH AND CYCLED SWITCH OFF FOR 5 MINUTES,THEN BACK ON. LIGHT REMAINED EXTINGUISHED. GROUNDED - YES. ACCOMPLISHED WHC BITE WITH NO CURRENT FAULTS.CONTOLLER HAD LOGGED #1 SENSOR, REF B737-900 AMM 30-41-00. 2020-05-26
N448AS BOEING 737990ER During APPROACH - LEFT FWD WINDOW HEAT OVERHEAT LIGHT ILLUMINATED ON FINAL APPROACH. GROUNDED - YES. (WHCU BITE PROCEDURE REF FIM 30-41 TASK 801 FAULT HISTORY SHOWS WHCU-LRU FAIL. PER B737-900 FIM 30-14 TASK 807, REQUIRES WHCU (M321) P/N 83000-27904, NIS @ LAX AS46962. AS REQ'D PER FIM TASK 30-41 TASK 807 STEP F. (2), R+R THE WHCU (M321) REF AMM 30-41-11, INSTALLATION TEST PASSED, A/C IS OK FOR SERVICE. PULLED THEN RESET 4 C/B'S. 2020-03-18
N448AS BOEING 737990ER During CRUISE - FWD LEFT WINDOW HEAT OVERHEAT IN FLIGHT ACCOMPLISHED QRH AND LIGHT STAYED EXTINGUISHED. GROUNDED - YES. REF B737-900 FIM30-41 TASK 801, 30-41 TASK 812. WHCU SHOWS NO CURRENT FAULTS, HISTORY SHOWS VARIOUS #1 WINDOW SENSOR FAULT LT. ACCOMPLISHED WHCU OVERRIDE MODE. OPS TEST NORMAL. COULD NOT DUPLICATE ON GROUND. 2020-03-13
N448AS BOEING 737990ER During CRUISE - RIGHT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED IN FLIGHT RE-SET SWITCH TO ON NORMAL OPERATION AFTER RE-SET PER QRH. GROUNDED - YES. PERFORMED B737-900 FIM 30-41 TASK 811 NO FAULTS WERE NOTED. SYSTEM OPS NORMAL. 2020-03-06
N448AS BOEING 737990ER During NOT REPORTED - WINDOW HEAT R SIDE OVERHEAT. GROUNDED - YES. ACCOMPLISHED RESET PER QRH. LT STAYED OFF AFTER CHEKLIST COMPLETED. 2020-03-06
N448AS BOEING 737990ER During INSP/MAINT - DURING PDC DURING AROUND, FOUND #2 ENG TBV DRAIN LINE LEAK WITH 1 DROP PER MINUTE. GROUNDED - YES. REMOVED AND REPLACED#2 TBV PER B737-900 AMM 75-23-01-400-801-F00. PERFORMED TEST LISTED. NO LEAKS FOUND. NO DEFECTS NOTED. 2020-03-05
N448AS BOEING 737990ER During CRUISE - RIGHT SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED IN FLIGHT. INITIATED QRH 3.5, AND OVERHEAT LIGHT REMAINED OFF. GROUNDED - YES. INITIATED RESET PER QRH 3.5, AND OVERHEAT LIGHT REMAINED OFF. 2020-03-05
N448AS BOEING 737990ER During NOT REPORTED - F/O FMS R5, R6 KEYS STICKY (MCDU UNIT). GROUNDED - YES. REPLACED F/O'S FMCS CDU KEYBOARD REF B737-900 AMM 34-61-01-000-801/400-801. OPS CHECKS OK. 2020-02-18
N448AS BOEING 737990ER During INSP/MAINT - APU ELECTRIC POWER INOP. GROUNDED - YES. PERFORMED OPERATIONAL TEST FOR AC GENERATION AND CONTROL SYSTEM REF AMM 24-21-00-700-803. OPS CKS GOOD NO FAULTS. VISUALLY EXAMINED (GVI) OF APU COMPARTMENT AND HARNESSES. NO FAULTS FOUND. PERFORMEDAPU BITE LOOKING FOR RECENT OR CURRENT MAINT MSG'S. MOST RECENT MSG IS 400+ STARTS IN HISTORY. REF FIM 49-60 TASK 801. OPS CKS GOOD. ETOPS SIGNIFICANT SYSTEM GROUND VERIFICATION SUCCESSFUL. 2020-01-08
N448AS BOEING 737990ER During NOT REPORTED - RT SIDE W/S OVERHEAT ILLUMINATED RAN QRH PROCEDURE- WINDOW OVERHEAT LIGHT ILLUMINATES AGAIN. GROUNDED - YES. REF FIM 30-41 TASK 811. WHCU SHOWS RIGHT SIDE WINDOW SENSOR #1 FAULT IN FLIGHT HISTORY, NO CURRENT FAULTS. RESISTANCE VALUES WERE WITHIN LIMITS, COULD NOT DUPLICATE. AS A PRECAUTION, MOVED TERMINAL WIRE FROM PRIMARY TO SPARE POSITION. OPS TEST NORMAL. 2020-01-02
N448AS BOEING 737990ER During CLIMB - RT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED AT CLIMB FL320 ON WAY TO FL330. GROUNDED - YES. RAN QRH, LIGHT WENT OUT AFTER3 MIN. 2019-12-31
N448AS BOEING 737990ER During NOT REPORTED - RIGHT SIDE WINDOW HEAT OVERHEAT ILLUMINATED. GROUNDED - YES. RESET PER QRH. DID NOT COME ON AGAIN AFTER RESET. 2019-12-31
N448AS BOEING 737990ER During CRUISE - RIGHT SIDE WINDOW HEAT OVERHEAT AT FL320 RAN QRH OVERHEAT LIGHT STAYED EXTINGUISHED. GROUNDED - YES. ACCOMPLISHED TSR. ON BITE OF WHCU FOUND #2, SENSOR #1 FAULT ON M321. RESISTANCE CHECK OF TEMP. SENSOR GOOD. REPLACED R2 WHCU M321. OPS CK GOOD, NO FAULTS REMAINING. 2019-12-20
N448AS BOEING 737990ER During CLIMB - DURING CLIMBOUT PASSING FL270, RIGHT SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. CREW FOLLOWED QRH PROCEDURES AND OVERHEAT LIGHT REMAINED OFF. 2019-12-19
N448AS BOEING 737990ER During CRUISE - SHORTLY AFTER LEVEL OFF THE RIGHT SIDE WINDOW OVERHEAT LT ILLUMINATED AFTER FOLLOWING THE QRH PROCEDURE IT REMAINED OFFHENCE THIS INFO ONLY WRITE UP. GROUNDED - YES. PERFORMED WINDOW HEAT CONTROL UNIT BITE FOR RIGHT SIDE WINDOW. BITE CHECKOK, NO FAULTS FOUND REF FIM 30-41 TASK 801. 2019-12-19
N448AS BOEING 737990ER During CRUISE - RIGHT SIDE WINDOW OVERHEAT LIGHT ILLUM 5 MINUTES AFTER TOP OF CLIMB AT FL310. SAT -34C. IAS 288/.78M. GROUNDED - YES. IAW QRH, TURNED SWITCH OFF WAITED 5 MIN, THEN TURNED BACK ON. OVRHT LT REMAINED EXTINGUISHED. 2019-12-19
N448AS BOEING 737990ER During CRUISE - AFTER CLIMBOUT, LEVELING AT FL320, RT SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED QRH PROCEDURE, AND OVERHEAT LIGHT REMAINED EXTINGUISHED. 2019-12-19
N448AS BOEING 737990ER During NOT REPORTED - WINDOW OVERHEAT CAUTION LIGHT ILLUMINATED INFLIGHT AT FL310. GROUNDED - YES. RESET PER QRH PROCEDURE. 2019-12-19
N448AS BOEING 737990ER During DESCENT - RIGHT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED ON DESCENT INTO LAX WHILE LEVELING AT 7000-. GROUNDED - YES. QRH FOLLOWED OVERHEAT LIGHT REMAINED EXTINGUISHED WHEN WINDOW HEAT SWITCH PLACED BACK ON. 2019-12-19
N448AS BOEING 737990ER During NOT REPORTED - WINDSHIELD WINDOW HEAT RIGHT SIDE OVERHEAT LIGHT ILLUMINATED IN FLIGHT. GROUNDED - YES. PERFORMED FIM TASK 30-41/801 W/NO FAULTS FOUND ON LT OR RT WHCU. OPS SATIS. OK FOR SERVICE. 2019-12-19
N448AS BOEING 737990ER During APPROACH - AT GLIDESLOPE CAPTURE AUTOPILOT B ON LOST GLIDESLOPE INDICATION ON BOTH PFD. LOCALIZER MOVED FULL RIGHT AND CAME BACK TOCENTER BACKWARDS. GROUNDED - YES. WHILE ON L NAVAPP FMC SHOWS FAULT MSG 22-11822 DURING DFCS FAULT REVIEW FOR B A/P. REF FIM 22-11 TASK 801 - NO CURRENT FAULTS. ACCOMPLISHED FIM 22-11 TASK 811 FOR FMC DATA INVALID - RE-RAN DFCS BITE REF FIM 22-11 TSK 801- NO FAULTS NOTED. PRECAUTIONARY ACCOMPLISHED DFCS LAND VERIFY REF AMM 22-11-00-700-801 -ALL TESTS PASS.ETOPS GROUND VERIFICATION COMPLETE. NOTE : NO FAULTS ON FMC 1& 2 BITE OR CDS BITE. 2019-12-16
N448AS BOEING 737990ER During CLIMB - RIGHT SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED ON CLIMB OUT. GROUNDED - YES. RAN QRH LIGHT REMAINED OUT. 2019-11-21
N448AS BOEING 737990ER During DESCENT - CONT CAB ZONE TEMP LIGHT ILLUMINATED WITH MASTER CAUTION. ZONE TEMP LIGHT DID NOT ILLUMINATE ON MASTER RECALL DURING TOPON DESCENT CHECKLIST. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 21-62 TASK 842. OPERATED LEFT AIR CONDITIONING PACK FORFIVE MINUTES REFERENCE B737-900 AMM 21-00-00. CONTROL CABIN ZONE TEMP LIGHT STAYS EXTINGUISHED. PERFORMED PACK TEMP CONTROL BITE REF FIM 21-62 TASK 801. NO EXISTING FAULTS LOGGED. 2019-11-18
N448AS BOEING 737990ER During NOT REPORTED - R2 WINDOW HEAT OVERHEAT. GROUNDED - YES. WHCU BITE TEST PASSED TEST OK REF B737-900 FIM 30-41 TASK 801, PERFORMED RESISTANCE TEST OF WINDOW HEAT FILM & WINDOW TEMP SENSOR BOTH TEST PASSED WITHIN LIMIT REF B737-900 AMM 30-41-21, PERFORMED WINDOW HEAT TEST NORMAL AMM 30-41-00. 2019-11-14
N448AS BOEING 737990ER During INSP/MAINT - WHILE SERVICING NR 1 ENGINE OIL NOTED HEAVY FUEL SMELL IN COWLING. GROUNDED - YES. FOUND FUEL LEAKING FROM NR 1 ENGINEGEAR STAGE PRESSURE RELIEF VALVE DURING IDLE RUN. REQUIRES FUEL FUMP CHANGE. REMOVED & REPLACED NR 1 FUEL PUMP REF AMM 73-11-01-400-801-F00 & AMM 73-11-01-000-801-F00. 2019-10-10
N448AS BOEING 737990ER During INSP/MAINT - NR 1 ENGINE IDG OIL COOLER FUEL OUT LINE DAMAGE. GROUNDED - YES. REMOVED AND REPLACED NR 1 ENGINE IDG OIL COOLER FUEL OUT LINE PER AMM 73-11-06 REQUIRES TEST 3A LEAK CHECK. LEAK CHECK GOOD. 2019-10-10
N448AS BOEING 737990ER During CRUISE - LEVEL AT CRUISE AT 34000 THE CABIN CLIMB GUAGE SHOWED +/- 500 FPM. LEFT DUCT PRESSURE FLUCTUATED FROM 45/40 PSI. R DUC WAS STEADY AT 45 PSI. LEVEL AT 24000 CABIN CLIMB SHOWED +/- 300 FPM. GROUNDED - YES. DURING CHECK FOUND #1 TCV FLUCTUATING (OPEN/CLOSE) CAUSING +/- 200 FPM CABIN ALTITUDE REF FIM 21-33 TASK 802. REMOVED AND REPLACED L/H PACK TCV REF B737-900AMM 21-51-10. OPS AND BITE CK GOOD. NO LEAKS. NO FAULTS ON DCPC #1 OR #2. REPEATED AIRCRAFT CABIN LEAK CKS REF AMM 05-51-91. NO LEAKS. OPS CKS GOOD. NO CABIN ALT RATE FLUCTUATIONS. 2019-09-18
N448AS BOEING 737990ER During NOT REPORTED - FO'S ND HAD VTK AND MAP FLAG WITH SINGLE FMC OPERATION IN SCRATCH PAD THEN RESTORED ITSELF. GROUNDED - YES. ACCOMPLISHEDFMC BITE REF FIM 34-61 TASK 801, FMC BITE & OPERATION NORMAL. 2019-09-13
N448AS BOEING 737990ER During TAXI/GRND HDL - ON TAXI OUT CONT CAB ZONE TEMP LIGHT ILLUMINATED. GROUNDED - YES. REF FIM 21-61-00, BOTH CONTROLLERS SHOW NO FAULTS. REFAMM 21-61-00, CLEANED CONTROL CABIN TEMP SENSOR FILTER. OPS TEST NORMAL. THIS CLEARS MEL 21-21G. 2019-08-19
N448AS BOEING 737990ER During INSP/MAINT - WHILE ACCOMPLISHING T/C 78273000 FAULT CODE APPEARED ON NR 1 ENGINE #76-31361, THE START LEVER SIGNALS DISAGREE, LONG TIME. MUST BE CORRECTED IN 450 FLT HRS. GROUNDED - YES. HIGH RESISTANCE D10920 Y2 TO GROUND WITH START LEVER AT IDLE REF FIM 76-11 TASK 801 & WDM 76-21-11. REMOVED AND REPLACED NR 1 ENGINE START LEVER WIRE BUNDLE REF AMM 76-11-02. MASTER DIMAND TEST OPS TEST GOOD REF AMM 33-18-00-710-802. FIRE OVERHEAT DETECTION SYSTEM OPS CHECK GOOD REF AMM 26-10-00-710-801.ENGINE FUEL SPAR VALVE ELECTRICAL CONTROL AND INDICATION TEST GOOD REF AMM 28-22-00-710-801. TEST 13 - ENGINE RUN - EECBITE CHECK GOOD REF AMM 71-00-00-700-808-F00. THIS CLEARS PLT DEFERRAL. ETOPS GROUND VERIFICATION SUCCESSFUL. 2019-08-08
N448AS BOEING 737990ER During TAXI/GRND HDL - LEFT PACK LIGHT ON RECALL DURING AFTER START CHECK. EXTINGUISHED WHEN MC PRESSED (PRIMARY OR SECONDARY CONTROLLER FAILURE). GROUNDED - YES. BITE OF LPFTC SHOWS TEMP CTR VALVE FAULT WITH CODES 21-51264 AND 21-51267. ACCOMPLISHED B737-900 FIM21-53 TASK 803. FAULT SELF RESTORED & OPS NORMAL. 2019-07-19
N448AS BOEING 737990ER During INSP/MAINT - WHILE PERFORMING T/C 78273000 FOUND LONG TIME FAULT ON ENGINE NR 1 MSG NBR 76-31361. THE START LEVER SIGNALS DISAGREE. GROUNDED - YES. ACCOMPLISHED FIM 76-11 TASK 801 NR 1 ENGINE "START LEVER SIGNAL DISAGREE" FAULT ISOLATION (MSG 76-31361)& T/C 78273000, BOTH CURRENT FAULT & FAULT HISTORY SHOW NO FAULTS, OPS CK NML. 2019-07-12
N448AS BOEING 737990ER During NOT REPORTED - WEATHER RADAR AN ERROR MESAGE IAMLEIN AVTS APPEARS ACCURATE WHEN TILT MODE IS IN MANUAL. ACFT GROUNDED. RESET THE SYSTEM, OPS CHECKED GOOD IAW AMM 34-43-00-730-802-001 PARAGRAPH G, ANTENNA TILT TEST, NO AIRCRAFT CONFIGURATION CHANGE. 2019-05-29
N448AS BOEING 737990ER During TAXI/GRND HDL - NR 2 START VALVE OPEN REMAINED ILLUMINATED AFTER ENGINE START. ACFT GROUNDED. PERFORMED AN OPS CHECK OF THE START VALVE, VISUALLY WATCHED THE VALVE`S OPERATION, NO DEFECTS NOTED, START VALVE LIGHT OPERATED NORMALLY, CAN NOT DUPLICATE.REMOVED AND REPLACED THE NR 2 ENGINE START VALVE IAW AMM 80-11-03, OPS TESTED GOOD. NORMAL ENGINE START VALVE INDICATION CLOSE AFTER START. 2019-05-15
N448AS BOEING 737990ER During TAXI/GRND HDL - LEFT ENGINE WILL NOT OBTAIN MORE THAN 65% N2 DURING START. ACFT GROUNDED. REMOVED AND REPLACED THE NR 1 ENGINE STARTERIAW AMM 80-11-01/401. PERFORMED IDLE POWER LEAK CHECK. LEAK CHECK GOOD. NO LEAK DETECTED IAW AMM 71-00-00-700-801. 2019-05-02
N448AS BOEING 737990ER During CRUISE - FA REPORTED WERE UNABLE TO COOL ROWS 6 - 16 INFLIGHT, UNTIL THE LAST HOUR OF FLIGHT. ACFT GROUNDED. NO HISTORY LAST 60DAYS. PFTC FAULT HISTORY LAST LEG SHOW R: 21-51123, L: 21-51123 & 21-51117. ALL FAULTS SHOW AS INTERMITTENT, COUNT 1& FAULT STATE. RECOVERED. IAW FIM'S 21-62 TASK 890, & 21-62 TASK 893, ACCOMPLISHED INITIAL EVALUATION IAW FIM 21-62TASK 801. BOTH PFTC'S SHOW GROUND TEST COMPLETE PASSED. GROUND VERIFICATION SUCCESSFUL IAW FIM 21-62 TASK 890, & 21-62TASK 893. 2019-02-25
N448AS BOEING 737990ER During NOT REPORTED - HF 2 FAIL MESSAGE ILLUMINATED. GROUNDED - YES. OPENED, THEN RESET HF 2 C/B ON P6-1 D2. FAIL MESSAGE RMVD. NR 2 HF OPS NML REF AMM 23-11-00. ETOPS GND VERIFICATION TEST SUCCESSFUL. 2019-02-20
N448AS BOEING 737990ER During NOT REPORTED - LEFT PACK LIGHT ILLUMINATES DURING RECALL. GROUNDED - YES. REMOVED & REPLACED LEFT PACK TCV, V139, REF AMM 21-51-10-400-801. LEAK CK GOOD PER THE SAME. ACCOMPLISHED PFTC BITE TEST REF AMM 21-61-00-740-801-002. GROUND TEST PASSED WITH NO FAULTS. 2018-12-06
N448AS BOEING 737990ER During INSP/MAINT - WHILE ACCOMPLISHING T/C 78273000 ON NR 1 ENGINE FOUND CODE 76-31361 THE START LEVER SIGNALS DISAGREE, LONG TIME FAULT. GROUNDED - YES. ON DEFERRAL. PERFORMED FIM 76-11 TASK 801. EEC TEST PASSES, NO FAULTS FOUND IN RECENT FAULTS OR FAULT HISTORY MENU. PERFORMED ENGINE RUN AND EEC BITE CHECK REF AMM 71-00-00-700-808-F00 TEST 13, NO FAULTS PRESENT. REPAIR CONFIRMATION SUCCESSFUL. 2018-12-03
N448AS BOEING 737990ER During NOT REPORTED - LT PACK LIGHT ON WITH M/C RECALL. RESETS WITH M/C RESET. GROUNDED - YES. PERFORMED PFTC BITE, NO FAULTS, PAC LIGHT REMAINS EXTINGUISHED ON RECALL. HAS NO HISTORY. 2018-11-01
N448AS BOEING 737990ER During NOT REPORTED - CONTROL CABIN ZONE TEMP ILLUMINATED ON RECALL. ACFT GROUNDED. INTERROGATED THE LEFT PTFC, FOUND FAULT 21-51123. PERFORMED FIM 21-62, TASK 893, BITE CHECK PASSED. FOUND TO BE INTERMITTENT FAULT. 2018-07-19
N448AS BOEING 737990ER During CRUISE - MIDWAY THRU FLIGHT, THE F/A COMPLAINED OF EXCESSIVE CABIN HEAT, HAD TO POSITION THE FWD & AFT CABIN TEMP CONTROLS TO THE FULL COLD STOP, ANYTHING ABOVE THAT WOULD CAUSE EXCESSIVE HEAT. OPS WORKING NORMAL. ACFT GROUNDED. PERFORMED A CABIN TEMP CONTROLLER BITE TEST IAW FIM 21-61, TASK 801. TEST PASSED, NO FAULT AT THIS TIME. PERFORMED AN OPS TEST OF CONTROL AND INDICATION IAW AMM 21-61-00. OPS CHECKED NORMAL. NO HISTORY FOR 30 DAYS. OVERHEAT INDICATION FOR ZONE TEMP, DID NOT ILLUMINATE. 2018-07-16
N448AS BOEING 737990ER During NOT REPORTED - NR 2 ENGINE START VALVE OPEN. GROUNDED - YES. CLEANED CONNECTOR DP1202 ON NR 2 ENGINE STARTER VALVE, RECONNECTED CONNECTOR DP1202, PERFORMED ENGINE RUN WITH CREW, OPS CK GOOD. REF FIM 80-07 TASK 809. START VALVE OPS CK GOOD. 2018-06-13
N448AS BOEING 737990ER During NOT REPORTED - AFT GALLEY EMERGENCY EXIT SIGN OVER R2 DOOR IS BROKEN. ACFT GROUNDED. REPLACED THE LENS. OK FOR SERVICE. 2018-05-29
N448AS BOEING 737990ER During NOT REPORTED - LEFT ELEVATOR PITOT HEAT INOP. GROUNDED - YES. REMOVED LH FEEL SYSTEM PITOT PROBE PER B737-900 AMM 27-31-94-000-801. INSTALLED SERVICEABLE PITOT PROBE REF AMM TASK 27-31-94-400-801. OP'S CHECKED NORMAL. LEAK CHECKED NORMAL. 2018-04-17
N448AS BOEING 737990ER During CRUISE - AUTO FAIL LIGHT ILLUMINATED @FL410. FOLLOWED QRH PROCEDURE. GROUNDED - YES. CYCLED CONTROLLER FAULT CLEARED - TESTS GOOD. NO HISTORY. 2018-01-23
N448AS BOEING 737990ER During CRUISE - AUTO FAIL LIGHT ILLUMINATED IN CRUISE ALTN CONTROLLER OPERATED NORMALLY. GROUNDED - YES. NR 2 DPCP SHOWS "OFV LRU FAIL"AS AN EXISTING FAULT AND PREVIOUS FLIGHT LEG, REF FIM 21-31 TASK 801. AC CHECKED AND RELEASED PER MEL 21-14C, NR 2 AUTOMATIC CABIN PRESSURIZATION MODE INOP. REMOVED AND REPLACED AFT OUTFLOW VALVE REF AMM 21-31-03. OPS CHK GOOD. BITE CHK PASS. THIS CLEARS MEL 21-14C. 2018-01-23
N448AS BOEING 737990ER During CRUISE - AUTO FAIL LIGHT ILLUMINATED IN CRUISE ALTN CONTROLLER WORKED NORMALLY. GROUNDED - YES. COMPLIED WITH FIM 21-31 TASK 827,NO FAULTS NOTED, FAULTS CLEARED. COMPLIED WITH DCPC BITE IAW FIM 21-31 TASK 801, NO CURRENT FAULTS OPS CHECK GOOD. OK TO CONTINUE. 2018-01-23
N448AS BOEING 737990ER During NOT REPORTED - NR 2 HF WILL NOT TRANSMIT. EARLIER SELCAL CHECK WAS SUCCESSFUL. ACFT GROUNDED. PERFORMED FIM 23-11 TASK 801, NO FAULTSFOUND. REPLACED THE NR 2 HF TRANSCIEVER IAW AMM 23-11-21-000-801, AND 23-11-21-400-801. OPS CHECKED GOOD. PERFORMED TEST OF HF COMM SYS IAW AMM 23-11-000-730-801. GROUND VERIFICATION CHECKED GOOD. 2017-10-20
N448AS BOEING 737990ER During INSP/MAINT - ALL 24 FAN BLADE SHIMS ON THE NR 1 ENGINE WERE WORN. ACFT GROUNDED. REMOVED AND REPLACED THE FAN BLADE SHIMS. 2017-10-04
N448AS BOEING 737990ER During CRUISE - RIGHT FMC FAILED DURING CRUISE. ACFT GROUNDED. PERFORMED FMC BITE. NO FAULTS FOUND. RESET THE CIRCUIT BREAKER FOR THENR 2 FMC. OPS NORMAL IAW AMM 34-61-00. 2017-09-18
N448AS BOEING 737990ER During NOT REPORTED - SATCOM NR 2 TRANSMISSION WEAK & UNREADABLE, SATCOM NR 1 OPS CHECKED GOOD. ACFT GROUNDED. SUCCESSFULLY ESTABLISHED COMMUNICATIONS WITH DISPATCH ON NR 2 SATCOM. ETOPS GROUND VERIFICATION TEST NORMAL IAW AMM 23-15-00. 2017-04-21
N448AS BOEING 737990ER During NOT REPORTED - NO FMC PROMPT ON EITHER CDU. ACFT GROUNDED. CYCLED BOTH FMC COMPUTERS IAW FIM 34-61 TASK 807. FMC 1 & 2 RETURNED TO NORMAL. OPS NORMAL. 2017-02-15
N448AS BOEING 737990ER During NOT REPORTED - LEFT FMC FAILURE. GROUNDED - YES. REMOVED AND INSTALLED NEW NR 1 FMC COMPUTER. REF AMM 34-61-02. XLOADED COMPLETED AND PERFORMANCE FACTOR SET. SYS CKS NORMAL. 2017-01-18
N448AS BOEING 737990ER During INSP/MAINT - L-1 WINDOW HEAT CONTROLLER FAULTED. ACFT GROUNDED. REMOVED, REPLACED AND OPS TESTED WINDOW HEAT CONTROLLER IAW AMM 30-41-11. 2017-01-17
N448AS BOEING 737990ER During NOT REPORTED - NO FMC PROMPT ON BOTH CDU'S, UNABLE TO INITIALIZE IRU'S. GROUNDED - YES. REINITIATED FMC COMPUTERS. REENTERED IRU POSITIONS. IRU POSITION VERIFIED AND FMC PROMPTS OPERATE NORMALLY, REF AMM 34-21-00. 2017-01-04
N448AS BOEING 737990ER During TAXI/GRND HDL - DURING ELECTRICAL POWER UP, NO FMC PROMPT ON CAPTAIN'S AND FIRST OFFICER`S CDU WITH FMC TRANSFER SWITCH IN BOTH, PLACEDFMC TRANSFER SWITCH TO RIGHT, FMC PROMPT APPEARS. ACFT GROUNDED. ACCOMPLISHED FMCS BITE, IAW FIM 34-61-00-810-801 OF LEFT FMC. NO DEFECTS NOTED. DEFECT CLEARED. 2016-12-29
N448AS BOEING 737990ER During CRUISE - FL 350 .76 MACH `A` ENGAGED, LNAV/VNAV, FMC SOURCE SWITCH BOTH ON R DUE TO MEL 34-36J. RIGHT FMC SUBSEQUENTLY MOMENTARILY FAILED. VTK FLAGS ON BOTH MAP DISPLAY AND FMC, P/RST LIGHT ILLUMINATED, A/C REVERTED TO EWS AND ALT HOLD. A/P `A` REMAINED ENGAGED. MALFUNCTION SELF-CLEARED PRIOR TO QRH ACCOMPLISHED. GROUNDED - YES. REMOVED AND REPLACED #2 FMC COMPUTER PER B737-900 AMM 34-61-02-400-801. FMC OPS CHECK GOOD. 2016-12-13
N448AS BOEING 737990ER During NOT REPORTED - CAPTAIN'S FMC FAIL. ACFT GROUNDED. FLIGHT FAULT LOGGED PRESSURE POS LAT FAULT. LEFT FMC TESTED IAW AMM 34-61-00 AND OPSCHECKED GOOD, NO CURRENT FAULT. GROUND VERIFICATION TEST OPS CHECK NORMAL. 2016-12-13
N448AS BOEING 737990ER During TAXI/GRND HDL - LEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED ON THE GROUND. REFERRED TO QRH AND SHUT OFF WINDOW HEAT. GROUNDED - YES. WINDOW HEAT CONTROLLER FFR LOGGED WCHU FAULT. COMPLETED FIM TASK 30-41 TASK 807 AND 801. OK FOR SERVICE. 2016-11-29
N448AS BOEING 737990ER During NOT REPORTED - CONTROL CABIN ZONE TEMP ILLUMINATED ON RECALL, EXTINGUISHES WITH M/C RESET. ACFT GROUNDED. PERFORMED LEFT PACK TEMPERATURE CONTROL BITE PROCEDURE IAW FIM TASK 21-62 TASK 801, NO FAULTS NOTED, BITE CHECKS GOOD. 2016-11-08
N448AS BOEING 737990ER During NOT REPORTED - RIGHT SIDE WINDOW OVERHEAT M/C ON RECALL. RAN QRH & PROBLEM RESOLVED. ACFT GROUNDED. COMPLIED WITH FIM 30-41 TASK 801,NO FAULTS NOTED, CHECK GOOD. 2016-10-31
N448AS BOEING 737990ER During NOT REPORTED - ELEC LIGHT ILLUMINATED. ACFT GROUNDED. ACCOMPLISHED FIM 24-34 TASK 802 FOR SPCU INOP FAULT, FAULT CLEARED. 2016-09-29
N448AS BOEING 737990ER During NOT REPORTED - MCP PANEL HAS NO LIGHTS. ACFT GROUNDED. CYCLED POWER TO MCP & ALL LIGHTS RETURNED TO NORMAL. PERFORMED FIM 22-11 TASK803 ALL TESTS PASSED. PERFORMED DFCS LRU INTERFACE TEST FOR MCP IAW AMM 22-11-34 ALL TESTS PASSED & HGS SYSTEM TEST PASSED IAW AMM 34-36-00. 2016-09-07
N448AS BOEING 737990ER During NOT REPORTED - RT PACK LIGHT ILLUMINATED ON RECALL. ACFT GROUNDED. ACCOMPLISHED PACK FLOW TEMP CONTROLLER BITE PROCEDURE. LEFT CONTROLLER GROUND TEST PASS, NO FAULTS NOTED. RIGHT CONTROLLER SHOWED FAULT CODES 21-51510 TEMP CONTROL VALVE, 21-51260 MOTOROPEN AND 21-51267 TVC ON EXISTING FAULTS. FAULT HISTORY SHOWED SAME FAULTS ON LAST 3 FLIGHT LEGS, IAW AMM 21-61-00-740-801-002. REMOVED AND REPLACED RIGHT PACK TEMP CONTROL VALVE, OPS CHECK, LEAK CHECK GOOD, REF CMM 21-50-83. PERFORMED RIGHT CONTROLLER BITE PROCEDURE GROUND VERIFICATION TEST, PASS, NO FAULTS NOTED, IAW AMM 21-61-00. 2016-08-17
N448AS BOEING 737990ER During TAXI/GRND HDL - AFTER LANDING ROLLOUT FMC P/RST AND GROUND PROXIMITY INOPERATIVE LIGHT ILLUMINATED WITH VTK MESSAGE ON CAPTAINS INBD DU.NO FMC OPTION AT L1 ON EITHER CDU'S. ANOMALIES CONTINUED INTERMITTENTLY AT THE GATE AFTER SHUTDOWN. BOTH MAP MODES DISPLAYED DATA. ACFT GROUNDED. REMOVED AND INSTALLED NEW LT FMC COMPUTER, REF AMM 34-61-02. ADJUSTED PERFORMANCE FACTOR, REF AMM 34-61-00-800-801. ACCOMPLISHED SOFTWARE LOAD AND OPS CHECK OF LT FLIGHT MANAGEMENT COMPUTER SYSTEM. OPS TEST IAW AMM 34-61-00-710-80. SOFTWARE VERIFIED WITH IPC 34-61-02. SYSTEM CHECKS NORMAL. 2016-08-02
N448AS BOEING 737990ER During DESCENT - DURING DESCENT, FIRST OFFICER`S CDU WENT BLANK AND EVERY LIGHT ON THE KEY PAD ILLUMINATED. THERE WAS NO VTK AND THE MAPS WERE OTHERWISE NORMAL. AFTER A WHILE THE CDU DISPLAYED A "BIT: PASS" AND THE CDU RETURNED TO NORMAL. ACFT GROUNDED.COULD NOT DUPLICATE, OPS GOOD IAW AMM 34-61 TASK 804. GROUND VERIFICATION SUCCESSFUL IAW FIM 34-61 TASK 804. 2016-07-26
N448AS BOEING 737990ER During APPROACH - IN LNAV/VNAV MODE, AUTOPILOT ENGAGED, FAILED TO CAPTURE WAYPOINT ALTITUDE AND AIRSPEED ON ARRIVAL. ON APPROACH, APPROACH MODE WOULD NOT ARM. AUTOPILOT A USED FOR ALL. ACFT GROUNDED. AFTER ARRIVAL FOUND NR 2 NAV HAD VOR FREQ PREVENTING APPROACH MODE. NO FAULTS LOGGED IN FMC OR DFCS BITE. ACCOMPLISHED LAND VERIFY, IAW AMM 22-11-00, TEST PASS. 2016-07-22
N448AS BOEING 737990ER During CRUISE - AT CRUISE, CAPT HSI HAD VTK AND LOST BOTH MCDU'S. PULLED OUT QRH AND BY THE TIME IT WAS LOOKED UP, VTK, DISAPPEARED ANDBOTH MCDU'S CAME BACK ONLINE. SUSPECT FAILURE, TEMPORARY, OF LT FMC. ACFT GROUNDED. PERFORMED BITE CHECK OF FMC'S, LT & RT AND OF INPUTS TO FMC'S LT & RT, WITH NO CURRENT FAULTS NOTED, REF FIM 34-61, TASK 801. 2016-07-15
N448AS BOEING 737990ER During NOT REPORTED - ON RECALL GOT CONTROLLER CABIN ZONE TEMP LIGHT. IT EXTINGUISHED WHEN MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED BITE PROCEDURE ON PFTC IAW FIM 21-62-00-810-801. NO CURRENT FAULTS FOUND AT THIS TIME. PERFORMED BITE PROCEDURE ON FAULT HISTORY FOUND ON LEG 6, FLIGHT LEG FOUND FAULTS 21-51311 21-51220 21-51217. RAN BITE PROCEDURE IAW FIM 21-62, TASK801. NO FAULT CURRENT AT THIS TIME. 2016-07-13
N448AS BOEING 737990ER During CRUISE - ON LEVEL OFF THE CAPTAIN SIDE ND DISPLAYED VTK AND CAPTAIN SIDE MCDU SHOWED THE MENU PAGE WITH NO FMC OPTION. THE LEFTFMC RESTORED ITSELF WITHIN 1 MINUTE ON ITS OWN. LATER TRIED TO SELECT DIRECT , ERROR MESSAGE "INVALID MOD PLAN". SELECTED BOTH ON R FOR FMC'S, NORMAL OPS. AFTER 1 MINUTE SELECTED NORMAL, NORMAL OPS . ACFT GROUNDED. GROUND VERIFICATIONCOMPLETE. FMC BITE IAW FIM 34-61 TASK 801, TESTED GOOD. 2016-07-13
N448AS BOEING 737990ER During TAXI/GRND HDL - CONTROLLER CAB ZONE TEMP LIGHT ON RECALL. RESETS ON MASTER CAUTION RESET. ACFT GROUNDED. F/D SELECTOR FAULT, 21-51311 CODE. RESET IAW FIM 21-62 TASK 805. PTC BITE OPS NORMAL IAW FIM 21-62, TASK 801. 2016-05-20
N448AS BOEING 737990ER During CRUISE - M/C RECALL, CONT CABIN ZONE TEMP LIGHT ILLUMINATES ON CRUISE. EXTINGUISHES ON RESET. ACFT GROUNDED. FOUND MASTER CAUTION RECALL WILL NOT WILL NOT RECALL ZONE TEMP. FAULT NO LONGER PRESENT. CLEANED ALL 3 CABIN TEMP SENSORS FILTERS IAW MM 21-61-06-100-801. ACCOMPLISHED PACK FLOW TEMP CONTROLLER BITE TEST LT CONTROLLER SHOWS NO FAULTS. RT CONTROLLER SHOWS FAULT CODE 21-51266 & 21-51267 RT TEMP CONTROL VALVE, 141 BOTH FAULTS FOR THIS VALVE. REF FIM 21-62, TASK 830 AND MM 21-61-00-740-801-002. REPLACED RT TEMP CONTROL VALVE REF MM 21-51-10. OPS CHECK GOOD. 2016-05-06
N448AS BOEING 737990ER During TAXI/GRND HDL - AFTER LANDING, APPROXIMATELY 30 SECONDS ENGINE NR 1 OIL FILTER BYPASS LIGHT ILLUMINATED. LIGHT EXTINGUISHED AFTER ENGINE NR 1 SHUTDOWN. ACFT GROUNDED. ACCOMPLISHED STEPS A-E, 2, C OF FIM TASK 79-05, TASK 817. REPLACED NR 1 ENGINE SCAVENGE OIL FILTER CLOGGING TRANSMITTER, OPS/LEAK CHECK OK, REF AMM 79-21-07-400-801-F00. PERFORMED FIM 79-05, TASK 817. REPAIR CONFIRMATION, STEP F, PASSED CONFIRMATION. 2016-04-22
N448AS BOEING 737990ER During CLIMB - DURING CLIMB L2 WINDOW, CAPTAIN'S SIDE, OVERHEATED, PERFORMED QRH, LIGHT EXTINGUISHED FOR REMAINDER OF THE FLIGHT. ACFTGROUNDED. FOUND SPARE SENSOR OPEN, REF WDM 30-41-12, FOR L2 WINDOW. R & R THE L2 WINDOW, REF AMM 56-12-11-400-801 AND 56-12-11-000-801. ACCOMPLISHED WINDOW ADJUSTMENT REF AMM 56-12-11-820-801. ACCOMPLISHED WINDOW HEAT OPS TEST, REF AMM 30-41-00-710-801, OPS TEST GOOD. 2016-04-21
N448AS BOEING 737990ER During TAXI/GRND HDL - APU FAULT LIGHT CAME ON AFTER START ATTEMPT, AFTER LANDING. IAW QRH ATTEMPTED ANOTHER START AFTER 5 MINS. AND FAULT LIGHT EXTINGUISHED. FAULT LIGHT ILLUMINATED AGAIN AFTER SECOND START ATTEMPT. ACFT GROUNDED. CLEARED FAULT IAW FIM, OPS CHECK NORMAL AT THIS TIME. 2016-04-20
N448AS BOEING 737990ER During TAXI/GRND HDL - ZONE TEMP LIGHT FOR CONT CAB CAME ON DURING TAXI OUT. ACCOMPLISHED QRH PROCEDURES. LIGHT EXTINGUISHED WITH MASTER CAUTION RESET. ACFT GROUNDED. PERFORMED FIM 21-62 TASK 842, INITIAL EVALUATION PASSED. PERFORMED PACK TEMP CONTROL BITE, NO EXISTING FAULTS. HOWEVER, ON LEG 3 MSG 21-51217, FLIGHT DECK SELECTOR OPEN FAULT, MSG 21-51220, ZONE SELECTOR OPEN FAULT, AND MSG 21-51311, FLIGHT DECK SELECTOR NON-RECOVERABLE, LOGGED ON PFTC, M2951 AND PFTC, M2952. ACCOMPLISHED GROUNDTESTS ON BOTH PFTC, M2951 AND M2952, GROUND TEST COMPLETE, PASS WITH NO FAULTS, REF FIM 21-62, TASK 801. NO PREVIOUS HISTORY, THIS CLEARS MEL 21-21F CONTROL CAB ZONE TEMP LIGHT. 2016-04-20
N448AS BOEING 737990ER During TAXI/GRND HDL - L2 WINDSHIELD HEAT, OVERHEAT LIGHT COMES ON DURING TAXI AND CLIMBOUT. RESETS NORMALLY AND STAYS OUT FOR DURATION OF FLIGHT. ACFT GROUNDED. ACCOMPLISHED BITE CHECK IAW FIM 30-41, TASK 801. BITE SHOWS FAULT HISTORY SENSOR NR 1 ON L2 WINDOW. BOX RESETS AND DISPLAYS NO HARD FAULTS. 2016-04-20
N448AS BOEING 737990ER During CRUISE - DURING 1ST CSS APU START ATTEMPT AMBER FAULT LIGHT ILLUMINATED. ACCOMPLISHED QRH PROCEDURES, NO EGT NOTED DURING STARTATTEMPT. FAULT LIGHT EXTINGUISHED 2 MINUTES AFTER APU SWITCH SWITCHED TO OFF. ON DESCENT THRU FL 330 APU STARTED ON SECOND ATTEMPT. ACFT GROUNDED. BITE TEST ACCOMPLISHED. NO CURRENT FAULT. FOUND ONE FAULT UNDER FAULT HISTORY, MSG 49-15004, INLET DOOR SHUTDOWN. ACCOMPLISHED FIM TASK 49-10, TASK 806, INITIAL EVALUATION PASSED. STARTED APU SEVERAL TIMESWITH NO FAULT OR ANY OTHER MAINTENANCE MESSAGE. 2016-04-19
N448AS BOEING 737990ER During CLIMB - CAPTAIN LT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED DURING CLIMB, FOLLOWED QRH. DID NOT RESET. SECOND ATTEMPT AT RESET ATTOP OF DESCENT: OPERATED NORMALLY ALL THE WAY TO THE GATE. ACFT GROUNDED. WINDOW HEAT OPS NORMAL, REF AMM 30-41-00.SHOOK DOWN WINDOW CABLE AND AT ALL TERMINALS, NO FAULTS. CHECKED C/B WIRING, NO DISCREPANCIES NOTED. WHCU FAULTED SENSOR NR 1. ACCOMPLISHED FIM TASK 30-41, TASK 811, NO FAULTS. SENSOR WIRING READ 330 OHMS. ACCOMPLISHED INTERMITTENT FAULT PORTION OF FIM TASK. SENSOR RESISTANCE REMAINED AT 330 OHMS. GROUND VERIFICATION GOOD. OPS TEST GOOD, REF AMM 30 41-00. 2016-04-19
N448AS BOMBDR BD1001A10 During CRUISE - DURING CRUISE 100 MILES SOUTH OF PARIS FRANCE ON A FAR PART 91 FLIGHT AT FL 430 THE LEFT FORWARD WINDOW (PANEL A) INTERIOR GLASS SHATTERED, IT WAS NOTED THAT NO BIRD OR OTHER PHYSICAL IMPACT ON GLASS OCCURED DURING THIS INCIDENT. CREW DECLARED WITH ROME CONTROL WITH A PRECAUTION EMERGENCY DESCENT TO FL 200. CREW SLOWED AIRCRAFT TO A SPEED OF 250KTS. AIRCRAFT CABIN PRESSURE OR DIFFERENTIAL PRESSURE NEVER CHANGED. CREW FELT IT WAS SAFE TO CONTINUE TO DESTINATION AT LOW ALTITUDES WHERE A MAINTENANCE FACILITY WAS LOCATED. 2011-08-02

Likely List Price Spread

Historical Listing Counts

Popular Avionics

Explore the Full Dataset

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.