N448AS

Service difficulty reports · 156

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first.

Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
  FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
  WHERE n_number = 'N448AS' AND registry_match = 'registration'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR ASAA2026092368887Battery Pack · inoperativeWHILE WORKING T/C 78233001, M1673 FAILED TEST. GROUNDED - YES. REPLACED BATTERY PACK M1673 REF AMM 33-51-06-960-805. OPS CHECK GOOD.Sep 23, 2026 · N448AS · Boeing 737990ER · Emergency LightingSDR ASAA2026031664965Not Reported · faultedRAMP REPORTED L1 DOOR NOT ABLE TO OPEN. GROUNDED - YES. FOUND AIRCRAFT SLIGHTLY PRESSURIZED, SHUT DOWN APU, BLED CABIN PRESSURE OFF, L1 DOOR OPEN AS NORMAL IAW AMM 49-11-00, OUTFLOW VALVE WAS FOUND SHUT. APU OPERATES NORMALLY.Mar 16, 2026 · N448AS · Boeing 737990ER · Cabin Pressure Control SystemSDR ASAA2026011563770Landing Gear · faultedGEAR WOULD NOT RETRACT AFTER TAKEOFF NORMAL LANDING BELOW MAX LANDING WEIGHT. GROUNDED - YES. PERFROMED PSEU BITE AND FAULT CHK, NO FAULTS FOUND. PERFORMED LANDING GEAR EXTENSION AND RETRACTION IAW AMM 32-32-00-710-801. OPENED 26 CBS. CYCLED NOSE AND MAIN LANDJan 15, 2026 · N448AS · Boeing 737990ER · Landing Gear Retraction/Extension SystemSDR ASAA2025082660849Web · corrodedFWD CARGO DOOR SCUFF PLATE SUB-STRUCTURE HAS MULTIPLE AREAS OF CORROSION. GROUNDED - YES. REMOVED CORROSION FROM FWD PIT CARGO DOOR LOWER WEB IAW SRM 53-30-15-1A-1 ORIGNAL MATERIAL THICKNESS IS 0.050 IAW SRM 53-30-15-01-1, REMOVED 0.020, REMAINING THICKNESAug 26, 2025 · N448AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2025082560923Support · corrodedFWD CARGO COMPARTMENT AFT LEFT BULKHEAD SUPPORT STRUCTURE HAS CORROSION. GROUNDED - YES. REMOVED CORROSION FROM FWD PIT AFT L/H SIDE BULKHEAD SUPPORT IAW B737-900 SRM 53-30-08-1A-1, 100% MATERIAL LOSS AND FOUND TO BE OUT OF LIMITS IAW B737-900 SRM 53-30-08-1A-Aug 25, 2025 · N448AS · Boeing 737990ER · Fuselage Miscellaneous StructureSDR ASAA2025082060624Floorbeam · corrodedCABIN FWD FLOOR WET AREA APPROX.STA.297 RBL 12, FLOORBEAM UPPER SURFACE CORRODED AROUND FASTENER HOLE (1EA). GROUNDED - YES. REMOVED CORROSION, ORIG THICK .080", REMOVED .033", REMAINING .047" FOUND OUT OF LIMITS IAW SRM 53-10-51, REMOVED AND REPLACED PANEL BAug 20, 2025 · N448AS · Boeing 737990ER · Fuselage Main, Floor BeamSDR ASAA2025020355696Battery · inoperativeREMOVE AND REPLACE 3 BATTERY PACKS FOR EMERGENCY LIGHTING. GROUNDED - YES. REMOVE AND REPLACE 3 BATTERY PACKS FOR EMERGENCY LIGHTING. (S/N 414543, 414591, 414541)Feb 3, 2025 · N448AS · Boeing 737990ER · Emergency LightingSDR ASAA2024082852166Battery Pack · no testWHILE PERFORMING T/C 78233008, FOUND LEFT AFT OVERWING EXIT EMERGENCY BATTERY PACK INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY BATTERY PACK AT L, 7-8 WINDOWS AFT OF AFT OVERWING EXIT, FOOT PANEL REF AMM 33-51-06. OPS CHECK GOOD. OK FOR SERVICE.Aug 28, 2024 · N448AS · Boeing 737990ER · Emergency LightingSDR ASAA2024061950444Door · abnormalLANDING GEAR FAILED TO RETRACT AFTER TAKE-OFF FOUND MAIN GEAR ACCESS PANEL DOOR NOT FULLY CLOSED MADE OVERWEIGHT LANDING 165.0LBSNO HARD LANDING. GROUNDED - YES. AIR TURNBACK - ACCOMPLISHED GENERAL VISUAL INSPECTION OF ALL 3 GEARS NO DEFECTS NOTED. ACCOMPLISHEJun 19, 2024 · N448AS · Boeing 737990ER · Landing Gear Retraction/Extension SystemSDR ASAA2023121846838Unknown · unknownCABIN EMERGENCY LIGHT C/B POPPED. GROUNDED - YES. RESET CB REF AMM 20-60-01-860-801 CYCLED EMERGENCY LIGHTS OPS CHECK OK.Dec 18, 2023 · N448AS · Boeing 737990ER · Emergency LightingSDR ASAA2023101145565Unknown · unknownWHILE PERFORMING TC 78222000 - SYS. FAILS AILERON TEST. BITE 60-31. MSG 1111340 CAME UP SEVERL TIMES. PER FIM AN FFC SWAP IS REQ. FOR T/S. RMVD AND INSATLLED NEW FCC B. NO HELP. NEW FAIL MSG 22-11146. "AILERON SENSOR 2M937" REQ REPLACEEMENT. REINSTALLED ORIGINOct 11, 2023 · N448AS · Boeing 737990ER · Autopilot SystemSDR ASAA2023100145393Unknown · unknownFMC DISAGREE FMC MESSAGE APPEARED ON BOTH FMC SCRATCHPADS AND MAP DISPLAYS AFTER LANDING. MESSAGE DISAPPEARED WITH SHUTDOWN CHECK. GROUNDED - YES. PERFORMED FIM TASK 34-61 836 - CYCLED FMC. ALIGNED ADIRUS - NO FAULT MESSAGE DISPLAYED. AIRCRAFT OK FOR SERVICE.Oct 1, 2023 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2023092645338Starter · faulty#2 ENG WOULD NOT START- N2 WOULD NOT GET ABOVE 15%. CROSSBLEED START ALSO UNSUCCESSFUL- N2 LESS THAN 15%. GROUNDED - YES. REPLACED #2 ENG STARTER REF AMM 80-11-01 LK AND OPS CK GOOD.Sep 26, 2023 · N448AS · Boeing 737990ER · Engine CrankingSDR ASAA2023092145238Battery · inoperativeMULTIPLE EMERGENCY LIGHTS OUT. GROUNDED - YES. REMOVED AND INSTALLED 4 EA BATTERY PACKS AT R1 SNF R2 AND LH ROW 7 AND LH ROW 26 OPS CK GOOD IAW B737-900 AMM 33-51-06-960-805.Sep 21, 2023 · N448AS · Boeing 737990ER · Emergency LightingSDR ASAA2023082644790Unknown · unknownFO R2 WINDOW OVERHEAT ON CLIMBOUT. GROUNDED - YES. INFO ONLY NOTED.Aug 26, 2023 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2023082444779Unknown · unknownRIGHT SIDE WINDOW HEAT OVERHEAT LIGHT ILLUMINATED ENROUTE AT FL 350.SYS WAS RESET IAW AS NORMAL CHECKLIST PROCEDURE WITH NO FURTHER INCIDENCE. GROUNDED - YES. RIGHT SIDE WINDOW HEAT CONTOL UNIT SYSTM-TEST WORK NORMAL. REF AMM 30-41-11/501.Aug 24, 2023 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2023082344811Window · faultyTECH SERVICES REQUEST TO REPLACE R-2 SLIDING WINDOW ASSY DUE TO NUMEROUS REPORTS OF SIDE WINDOW OVERHEAT LIGHT ILLUMINATING----(#PRI2)----. GROUNDED - YES. REMOVED AND REPLACED THE R/H R2 SLIDING WINDOW ASSY. PER AMM 56-12-11. PERFORMED HEAT TEST AND CABIN PREAug 23, 2023 · N448AS · Boeing 737990ER · Flight Compartment WindowsSDR ASAA2023082344752Unknown · unknownON CLIMB OUT THROUGH 30,000' R2 WINDOW OVER HEAT ILLUMINATED RAN QRH 3.6 WINDOW OVERHEAT LIGHT EXTINGUISHED. GROUNDED - YES. ACCOMP WINDOW HEAT TEST OVHT/PWR TEST, TEST PASS REF AMM 30-41-00-860-003.Aug 23, 2023 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2023082344724Module · faultyRIGHT ALPHA VANE LIGHT AFTER ENGINE START. GROUNDED - YES. REMOVED AND REPLACED OVERHEAD P5 PROBE/WINDOW HEAT PANEL IAW B737-900 AMM TASK 30-41-41-000/400-801. INSTALL TEST PASSES, HEATERS WORK NORMALLY. HAD QUALIFIED TECH RUN ENGINE TO CHECK AUTO FUNCTION REFAug 23, 2023 · N448AS · Boeing 737990ER · Pitot/Static Anti-Ice SystemSDR ASAA2023082244735Unknown · unknownON CLIMBOUT, R2 WINDOW OVERHEAT ILLUMINATED GROUNDED - YES. RAN QRH 3.6 WINDOW OVERHEAT. LIGHT EXTINGUISHED.Aug 22, 2023 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2023081844675Aoa · faultyRIGHT ALPHA VANE LIGHT AFTER ENGINE START. GROUNDED - YES. REMOVED AND REPLACED RAOA PULLED AND COLLARD C/B'S IN REF WITH AMM 34-21-05-400-801. CLOSED ALL C/B"S PERFORMED ALL REQUIRED TEST SUCCESSFULLY. OPS TEST GOOD.Aug 18, 2023 · N448AS · Boeing 737990ER · Ice/Rain Protection SystemSDR ASAA2023081744662Packing · degraded#1 ENGINE OIL FILLER CAP PACKING NEEDS REPLACEMENT. GROUNDED - YES. REMOVED & REPLACED #1 ENGINE OIL FILLER CAP PACKING WITH NEW. REF AMM 79-11-01.Aug 17, 2023 · N448AS · Boeing 737990ER · Turbine Engine Oil SystemSDR ASAA2023081544643Aoa · malfunctionedAFTER ENGINE START R ALPHA VANE CAUTION ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED R/H AOA VANE REF AMM 34-21-05/401. 4 C/B'S OPENED, TAGGED, AND RESET. ALL OP AND LLM TESTS PASS. R ALPHA VANE LIGHT REMAINS EXTINGUISHED DURING TESTING.Aug 15, 2023 · N448AS · Boeing 737990ER · Pitot/Static Anti-Ice SystemSDR ASAA2023080144369Unknown · unknownON DESCENT AT APPROXIMATELY 8,000', R2 WINDOW OVERHEAT LIGHT ILLUMINATED, AFTER THROUGH MOISTURE. GROUNDED - YES. FOLLOWED QRH, LIGHT NEVER RE-ILLUMOINATED.Aug 1, 2023 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2023052643374Unknown · unknownRIGHT SIDE WINDOW HEAT, OVERHEAT CAUTION. GROUNDED - YES. RIGHT SIDE WINDOW, PRIMARY TEMP SENSOR HAS OPEN CIRCUIT. SWAPPED FROM PRIMARY TO SECONDARY WINDOW HEAT SENSOR, OPS CHECKS OK. REF B737-900 FIM 30-41 TASK 801 & 811, B737-900 AMM 30-41-21 & 30-41-00.May 26, 2023 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2023052143296Transceiver · inoperativeTURNED RADAR ON PRIOR TO TAKEOFF. WXR FAIL AND PW FAIL #1 AND #2 NAV DISPLAYS. GROUNDED - YES. REMOVED AND REPLACED WEATHER RADAR RECEIVER/TRANSMITTER IN REFERENCE WITH B737-900 AMM 34-43-41-400-801. PERFORMED OPERATIONAL CHECK IN REFERENCE WITH AMM 34-43-41-7May 21, 2023 · N448AS · Boeing 737990ER · Weather Radar SystemSDR ASAA2023050643138Coffeemaker · fumesDURING CRUISE, "A" FA REPORTED TRANSIENT FUMES (LEVEL 1 IN F.O.M.) WHEN FORWARD GALLEY UPPER COFFEE MAKER WAS TURNED ON. COFFEE MAKER WAS TURNED OFF AND FUMES DISSIPATED IMMEDIATELY. FA DESCRIBED THE FUMES SMELL AS MODERATELY STRONG AND ELECTRICAL POSSIBLY FROMay 6, 2023 · N448AS · Boeing 737990ER · Buffet/GalleysSDR ASAA2023041042835Modulating Valve · faultedRIGHT PACK LIGHT ILLUMINATES DURING MASTER CAUTION RECALL AND RESETS WHEN MASTER CAUTION PRESSED. GROUNDED - YES. REMOVED AND REPLACED NUMBER 2 TEMPERATURE CONTROL VALVE IAW B737-900 AMM 21-51-10-000-801 AND 21-51-10-400-801.Apr 10, 2023 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2023031442365Transceiver · failedHF #1 FAIL-FAIL INDICATION. GROUNDED - YES. REMOVED AND REPLACED #1 HF TXCVR REF B737-900 AMM 23-11-21.Mar 14, 2023 · N448AS · Boeing 737990ER · HF Communications SystemSDR ASAA2023031342321Lamp · inoperativeL2 DOOR SLIDE EMERGENCY LIGHT BULB OUT. GROUNDED - YES. RELAMPED & TESTED L2 DOOR SLIDE LIGHT BULB REF B737-900 AMM 33-51-04. OPS TEST GOOD.Mar 13, 2023 · N448AS · Boeing 737990ER · Emergency LightingSDR ASAA2023030142123Controller · faultyRIGHT PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL LIGHT RESETS WITH MC RECALL. GROUNDED - YES. REMOVED AND REPLACED RIGHT PACK TEMP CONTROLLER REF B737-900 AMM TASK 21-61-17-400-801.Mar 1, 2023 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2023020641848Not Reported · not reportedAFTER LANDING FMC INTERMITTENTLY CUT OUT ON CAPTAIN'S SIDE. GROUNDED - YES. PER B737-900 FIM 34-61 TASK 801 + 807 FMCL KEEPS CYCLING. BITE INFLIGHT FAULT SHOWS FMC-L PGM FAULT. RESET AIRCRAFT POWER. FMC OPERATION RETURNED. OPS CHECK NORMAL.Feb 6, 2023 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2023013141744Unknown · unknownON DESCENT FO FMC DISPLAY BLANK AND ALL ANNUNCIATOR LIGHTS ILLUMINATED. GROUNDED - YES. AFTER 1 MIN, RESET ITSELF. OPS NORMAL REMAINDER OF FLIGHT.Jan 31, 2023 · N448AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2023013011681Pressure Switch · inoperativeFOLLOW-UP TO HISTORY OF #2 TANK AFT PUMP LOW PRESSURE LIGHT INOP----(#PRI2)----ETOPS SIGNIFICANT SYSTEM----. GROUNDED - YES. (RESOLVED ON W/O: 1939840 TASKCARD: N/R-00001 ) REMOVED AND REPLACED #2 TANK AFT PUMP PRESSURE SWITCH REF. B737-900 AMM 28-42-11. OPERAJan 21, 2023 · N448AS · Boeing 737990ER · Fuel Boost PumpSDR ASAA2023011641782Battery Pack · failedAFT RH CABIN EMERG. LIGHTS DO NOT ILLUMINATE IN THE CEILING. GROUNDED - YES. REMOVED & REPLACED BATT. M2627 REF B737-900 AMM 33-51-06.Jan 16, 2023 · N448AS · Boeing 737990ER · Emergency LightingSDR ASAA2023011951559Modulating Valve · faultedRIGHT PACK LIGHT ILLUMINATED IN TAXI. EXTINGUISHES WITH MASTER RESET. GROUNDED - YES. REMOVED & REPLACED R. PACK TEMP CONTROL VALVE, REF B737-900 AMM 21-51-10.Jan 15, 2023 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022111940881Warning Message · false activationPILOTS 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.Nov 19, 2022 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2022090639828Control Panel · faultyCARGO 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.Sep 6, 2022 · N448AS · Boeing 737990ER · Detection SystemSDR ASAA2022090339789Spacer · debondedWHILE ACCOMPLISHING OF T/C #78472010, FAN BLADE LUBRICATION, FOUND #17 FAN BLADE SPACER W/ DISBONDED ELASTOMER. REQUIRES REPLACEMENT. GROUNDED - YES. DURING ACCOMPLISHMENT OF T/C #78472010, REPLACED #17 FAN BLADE SPACER. COMPLETED T/C WITH NO FURTHER DEFECT NOSep 3, 2022 · N448AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2022082339611Spacer · debondedWHILE 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.Aug 23, 2022 · N448AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2022081939600Modulating Valve · failedRIGHT 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.Aug 19, 2022 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022080839464Control Valve · dirtyRH PACK LIGHT ILLUMINATED ON MASTER CAUTION RECALL. RESET WITH MC RESET. GROUNDED - YES. ACCOMPLISHED BITE ON BOTH TEMP CONTROLLERS 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 STAYAug 8, 2022 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022072539252Unknown · unknownFWD 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.Jul 25, 2022 · N448AS · Boeing 737 · Detection SystemSDR ASAA2022072439166Unknown · faulty#2 HF RADIO DOES NOT TRANSMIT. RECEIVES NORMALLY. GROUNDED - YES. REPLACED #2 HF TRANSCEIVER REF B737-900 AMM 23-11-21. OPS CHECKS GOOD.Jul 24, 2022 · N448AS · Boeing 737 · HF Communications SystemSDR ASAA2022053138547Start Valve · faultyENG 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.May 31, 2022 · N448AS · Boeing 737990ER · Engine StarterSDR ASAA2022050138190Valve · failedCABIN CLIMB RATE ON PRESSURIZATION FLUCTUATED UP/DOWN ENTIRE FLIGHT. CABIN RATE +/- 100 FPM UP TO +300 FPM WITH ADDITION OF THRUST AND -500 FPM WITH THRUST REDUCTION. DURING CLIMB DUCT PRESS SPLIT +/- 10 PSI WITH MAX SPLIT OF +/- 15 PSI IN CRUISE WITH LARGE POMay 1, 2022 · N448AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2022033037855Fire Detector · inoperative#1 ENGINE FIRE DETECTION LOOP A IS INOPERATIVE. ("A" LOOP DOESN'T TEST AND FAULT LIGHT ILLUMINATED). GROUNDED - YES. REF TSR711760, 2 DECTECTOR HARNESS & FAN LOOP ASSY REPLACED & OPS TEST NORMALMar 30, 2022 · N448AS · Boeing 737990ER · Smoke DetectionSDR ASAA2022031637701Control Valve · faultySAME ISSUE AS LO 60259389 +/-3 PSI DUCT PRESSURE OSCILLATION AND CABIN RATIO OSCILLATION +/-3. GROUNDED - YES. C/W PACK FLOW TEMPERATURE CONTROLLER BITE REF B737-900 AMM 21-61-00-740-801-002, NO EXISTING FAULTS FOUND, HISTORY SHOWS FLOW CONTROL VALVE FAULT # 2Mar 16, 2022 · N448AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2022031437684Unknown · unknownHF #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.Mar 14, 2022 · N448AS · Boeing 737990ER · HF Communications SystemSDR ASAA2022022437542Unknown · unknownR2 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 RESISTANCE TESTS WITHIN LIMIT Feb 24, 2022 · N448AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
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