N474AS
Service difficulty reports · 244
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 = 'N474AS' 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.
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 = 'N474AS' AND registry_match = 'registration' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR ASAA2021053134989Warning Light · false activationAFTER ENGINE START AND MASTER RECALL PUSHED CONT CAB ZONE TEMP LIGHT ILLUMINATED, RESETS WITH MASTER CAUTION RESET. GROUNDED - YES. #2 PZTC LOGGED CONTROL CABIN TRIM VALVE FAULT. RESET FAULT. SEVERAL CONSECUTIVE BITE CHECKS PASSED. OBSERVED VALVE DURING BITE. SDR ASAA2021052534927Sensor · faultedFOLLOWING A 27K TAKEOFF IN DEN CLIMBING THROUGH 15 AFL. RIGHT BLEED TRIP OFF. FOLLOWED QRH, RESET THE BLEED TRIP LIGHT EXTINGUISHED HOWEVER DUCT PRESSURE IN LEFT DUCT WAS 42PSI WHILE RT DUCT WAS 20PSI. THIS DUCT SPLIT REMAINED UNTIL LEVEL OFF FL 340 AND DUCT PSDR ASAA2021051534819Indication Sys · no indicationSAT PROMPT NOT DISPLAYED ENROUTE. GROUNDED - YES. QRH RESET PERFORMED. OPS NORMAL.SDR ASAA2021042334668Pump · low pressureLEFT MAIN FUEL TANK AFT PUMP LOW PRESSURE LIGHT ILLUMINATED, QRH COMPLETED - PUMP OFF. NO OTHER INDICATIONS. GROUNDED - YES. REMOVED AND REPLACED #1 AFT FUEL BOOST PUMP REF B737-900 AMM 28-22-41-000-801 AND 28-22-41-400-801. ACCOMPLISHED FUEL BOOST PUMP OPERATSDR ASAA2021042034616Satcom · lockedDURING CLIMB OUT OF LAS SATCOM LOCKED UP WITH REPETITIVE CHIMES. GROUNDED - YES. RESET WITH QRH PROCEDURE.SDR ASAA2021033034479Warning Message · false activationDURING CRUISE AT FL 340, LEFT SIDE WINDOW HEAT OVERHEAD ILLUMINATED. GROUNDED - YES. COMPLIED WITH QRH. RESOLVED ISSUE.SDR ASAA2021032234381Start Valve · inoperative#2 START VALVE OPEN LIGHT REMAINED ILLUMINATED AFTER START SWITCH RELEASED TO OFF. GROUNDED - YES. REMOVED AND REPLACED #2 ENG START VALVE PER B737-900 80-11-03 OPS CHECK NORMAL.SDR ASAA2021031434284Control Valve · failedLEFT PACK FLOW CONTROL VALVE CLOSED POSITION SWITCH FAILED. FMC RECEIVES "OPEN" DISCRETE FROM TARGET CALCULATIONS. GROUNDED - YES. REMOVED AND REPLACED LEFT PACK FLOW CONTROL VALVE REF AMM 21-51-01, LEAK AND OPS CK'S GOOD.SDR ASAA2021021134097Fmc · malfunctionedRH FMC FAIL WITH VTK FLAG, PERFORMED QRH PROCEDURE, SYSTEM RESTORED ITSELF BEFORE FMC SWITCH MOVED TO "BOTH ON LEFT". GROUNDED - YES. PERFORMED B737-900 FIM 34-61 TASK 836 INITIAL EVALUATION CHECK GOOD. NO HISTORY LAST 90 DAYS.SDR ASAA2021012833976Master Caution · fault messageCONTROL CABIN ZONE TEMP AMBER LIGHT ILLUMINATES ON MASTER CAUTION RECALL AND EXTINGUISHES ON MASTER CAUTION SYSTEM RESET. GROUNDED - YES. NR 2 PACK ZONE TEMP CONTROLLER SHOWS FLT DECK TCV ON BIT & PREV FLT, GREEN GO FOR VERIFY, MSG RESET. RAN PACKS & RE-VERSDR ASAA2021011333872Lamp · inoperativeR2 DOOR SLIDE EMERGENCY LIGHT INOPERABLE. GROUNDED-YES. RELAMPED LIGHT BULB AND TESTED GOOD, PER B737-900 AMM 33-51-04.SDR ASAA2020122833874Transition Panel · corrodedAFT CARGO COMPARTMENT FLOOR SUPPORT TRANSITION PANEL CORRODED FROM BS 727 BS 787 LBL 21. GROUNDED-YES. REMOVED DAMAGE ON AFT CARGO LT TRANSITION PANEL ORIGINAL THICKNESS 0.040, MATERIAL REMAINING 0.028. REMOVED 0.012 AND FOUND TO BE OUT OF LIMITS, PER B737-SDR ASAA2020122833873Web · corrodedAFT CARGO COMPARTMENT DOOR SILL WEB CORRODED. GROUNDED-YES. REMOVED DAMAGE ON AFT CARGO DOOR SILL WEB ORIGINAL THICKNESS 0.050, MATERIAL REMAINING 0.032. REMOVED 0.018 AND FOUND TO BE OUT OF LIMITS, PER B737-900ER SRM 53-60-15-1A-1. REMOVED AND REPLACED WESDR ASAA2020122833824Transition Panel · corrodedAFT CARGO COMPARTMENT FLOOR SUPPORT TRANSITION PANEL CORRODED FROM BS 727 BS 787 RBL 21. GROUNDED-YES. REMOVED DAMAGE ON RT AFT CARGO TRANSITION PNL. ORIG THICKNESS 0.040; MATL REMAINING 0.021; REMOVED 0.019 AND FOUND TO BE OUT OF LIMITS, PER B737-900ER SRMSDR ASAA2020121533692Circuit Breaker · trippedDURING AFTER START CHECKLIST AUX PITOT LIGHT ILLUMINATED AFTER POSITIONING PROBE HEAT SWITCHES ON AND NOTED CIRCUIT BREAKER HAD POPPED. GROUNDED-YES. CREW COULD NOT DETERMINE IF C/B POPPED DURING SWT OPERATIONS, THEY NOTICED IT DURING VISUAL SCAN. RESET AUXSDR ASAA2020101733368Bulb · burned outLT AFT ENTRY DOOR SLIDE EMERGENCY LIGHT IS INOPERABLE. GROUNDED-YES. RELAMPED EMERGENCY LIGHT, PER B737-900 AMM 33-51-04. OPERATIONS CHECKED GOOD.SDR ASAA2020100933340Wire Harness · faultedON PREFLIGHT, NR 1 ENGINE A LOOP FAULT. NO FAULT NOTED ON B LOOP. GROUNDED-YES. ACCOMPLISHED TSR710174, REPLACED ENGINE NR 1 MW0315 AND MW0325 HARNESS, REF B737-900 AMM 26-11-02-400-801 AND REF AMM 26-11-02-400-802. OPERATIONS NORMAL, REF AMM 26-11-00-710-SDR ASAA2020100233275Sensor · out of toleranceFAULT CODE 79-11092 NR 2 ENGINE THE ENGINE OIL PRESS SIGNAL (PEO) IS OUT OF RANGE. SHORT TIME FAULT DEFERRED, PER T/C 78273000. GROUNDED-YES. REMOVED AND REPLACED NR 2 ENGINE OIL PRESSURE SENSOR, REF B737-900 AMM 79-32-01. OPERATIONS AND LEAK CHECK GOOD.SDR ASAA2020092233213Actuator · faultedAUTOPILOT "A" WOULD NOT REMAIN ENGAGED 3 ATTEMPTS. GROUNDED-YES. REMOVED "A" AUTOPILOT AILERON ACTUATOR, PER B737-900 AMM 22-11-25-000-801. PERFORMED AUTOPILOT AILERON ACTUATOR LINKAGE INSPECTION, PER AMM 22-11-25-200-801, WITH NO DEFECTS NOTED. INSTALLESDR ASAA2020091733190Pressure Switch · failedAUTOPILOT 'A' INOP, DISENGAGES AFTER A FEW SECONDS. GROUNDED-YES. PERFORMED DFCS BITE, PER B737-900 FIM 22-11 TASK 801. FAULT HISTORY, A CHANNEL HAS 2 FAULTS 22-11189 AIL SYNC INV >4 SEC AND 22-11147 AIL PRESS SW-1. REMOVED AND REPLACED AUTO PILOT AILERON SDR ASAA2020081733021Control Valve · failedAFTER START RT PACK LIGHT ILLUMINATED ON RECALL. RESET WITH MC RECALL. GROUNDED, YES. REF B737-900 FIM 21-62 TASK 801, 21-62 TASK 831. NR 2 ZONE TEMP CONTROLLER SHOWS: TCV (THIS PACK). REQUIRES TCV (V141). REMOVED AND REPLACED ZONE 2 TEMPERATURE CONTROL VSDR ASAA2020060832778Control Valve · failedCONT CAB ZONE TEMP LIGHT ON RECALL. GOES OUT ON RESET. GROUNDED - YES. CONFIRMED FAULT, "CONT CAB ZONE" TEMP LIGHT ILLUMINATES ON RECALL. NR 2 PACK/ZONE TEMP CONTROLLER BITE SHOWS HARD FAIL "FLIGHT DECK TCV" (V143). REMOVED & REPLACED FLIGHT DECK TCV REF AMM 2SDR ASAA2020051932742Mount · wornNR 2 ENGINE J-9 HARNESS CABLE DR-25 LOOSE GOING THROUGH HARNESS MOUNT AT 3 O'CLOCK LOOKING FWD AT STRUT FAIRING. GROUNDED - YES. TEMPORARILY REPAIRED HARNESS-TO-MOUNT INTERFACE GAP AT THE NR 2 ENGINE IAW EA 900ER-73EA-22724. HARNESS MOUNT TO BE REPLACED AT THESDR ASAA2020052132742Mount · worn#2 ENGINE J-9 HARNESS CABLE DR-25 LOOSE GOING THROUGH HARNESS MOUNT AT 3 O'CLOCK LOOKING FWD AT STRUT FAIRING. GROUNDED - YES. TEMPORARILY REPAIRED HARNESS-TO-MOUNT INTERFACE GAP AT THE #2 ENGINE PER ASA EA 900ER-73EA-22724. HARNESS MOUNT P/N 340-099-503-0 TO SDR ASAA2020052032735Clamp · looseWHILE WORKING TC 78472000 ON ENG #2-FOUND 2 HARNESS CLAMPS FWD OF THE 3 O'CLOCK STRUT FAIRING LOOSE. GROUNDED - YES. ON THE #2 ENGINE, TIGHTENED BOTH CLAMPS FORWARD OF THE 3 O'CLOCK STRUT FAIRING REF B737-900 AMM 73-21-06-400-802-F00.SDR ASAA2020052032734Duct · broken#2 ENG INLET COWL ANTI -ICE DUCT HEAT SHIELD BROKEN AT AFT END. GROUNDED - YES. REMOVED AND REPLACED #2 ENG INLET COWL TAI DUCT BETWEEN FAN CASE AND INLET COWL TAI VALVE REF P/P BUILD UP 71-00-02, PERFORMED LEAK CHECK REF B737-900 AMM 30-21-11, LEAK CHECK GOODSDR ASAA2020042932689Warning System · false activationCONT CAB ZONE TEMP LIGHT ILLUMINATED. GROUNDED - YES. REL PER MEL 21-21G. FLIGHT DECK PRI TEMP CONTROL INOP. INITIAL EVALUATION, CONT CAB ZONE TEMP LIGHT ON RECALL, RESET W/ MASTER CAUTION. PERFORMED PACK TEMP CONT BITE ON PZTC #1 & #2 IAW B737-900 FIM 21-62 TSDR ASAA2020042732666Sensor · failedWINDOW HEAT "L SIDE" ANN ILLUMINATED IN FLIGHT RAN QRH. LIGHT REMAINED ILLUMINATED. GROUNDED - YES. FOUND PRIMARY AND SECONDARY SENSORS OUT OF TOLERANCE PER B737-900 WDM 30-41-12. REMOVED NUMBER 2 LEFT FLIGHT DECK WINDOW REF B737-900 AMM 56-12-11-000-801. OLD SDR ASAA2020031032399Transceiver · looseWXR FAIL. CONT STAB ANNUNCIATED ON ND. GROUNDED - YES. FOUND WXR RT LOOSE IN RACK. (6 TURNS) RE-SECURED R/T REF B737-900 AMM 34-43-41-400-801. OPS CK OK REF. AMM 34-43-00-710-802-001. CLEARS MEL 34-15D.SDR ASAA2020030332343Warning System · false activationLEFT SIDE WINDOW OVERHEAT LIGHT REMAINS ILLUMINATED. GROUNDED - YES. VERIFIED LEFT SIDE WINDOW OVERHEAT LIGHT EXTINGUISHED. PERFORMED LEFT SIDE WINDOW WHCU BITE IAW B737-800 FIM TASK 30-41 TASK 801. BITE TEST OK.SDR ASAA2020020422069Transceiver · failedHF 2 INDICATES FAIL ON RADIO TUNING PANEL. GROUNDED - YES. REPLACED HF TRANSCEIVER REF B737-900 AMM 23-11-21.SDR ASAA2020012181893Warning Light · false activationON RECALL CONT CAB ZONE TEMP ILLUMINATES & GOES OUT ON MASTER CONTROL RESET. GROUNDED - YES. T/S SYSTEM AMM 21-61-00-700-806-002, AND AMM TASK 21-61-00-700-807-002. OPS CHECKED GOOD.SDR ASAA2020011731879Light · inoperativeLEFT AFT ENTRY DOOR SLIDE EMERGENCY LIGHT IS INOP. GROUNDED - YES. RELAMPED EMERGENCY LIGHT PER AMM 33-51-04-960-801 / OPS CK GOOD.SDR ASAA2020011331828Warning System · false activationUPON RECALL "ZONE TEMP" FOR THE FWD CAB LIGHT ILLUM. RESET WITH MASTER CAUTION RESET BUTTON. GROUNDED - YES. RESET PACK CONTROL TEMP IAW FIM 21-62-801 CONTROL SEQIT FAULT CAB TEMP FAULT NO LONGER PRESENT.SDR ASAA2019122091657Wire Harness · damagedWHILE ACCOMPLISHING TC N8420000, FOUND DAMAGE ON #1 ENGINE CORE FIRE DETECTOR HARNESS MW0325. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE CORE FIRE DETECTOR HARNESS MW0325. INSTALLATION TEST ACCOMPLISHED WITH NO FAULTS NOTED, REF B737 - 900 AMM 26-11-02. OPSDR ASAA2019121653607Wire Harness · damagedWHILE PERFORMING T/C N8420001 (RH ENG HARNESS GVI), FOUND HARNESS MW0325 SHIELDING DAMAGED. GROUNDED - YES. MW0325 FIRE DETECTOR HARNESS ON ENG #2 REMOVED AND REPLACED REF B737-900 AMM 26-11-01. OPERATIONAL CHECK GOOD AND GROUND VERIFICATION SUCCESSFUL.SDR ASAA2019121191565Warning Light · false activationDURING CLIMB LEFT FWD WINDOW OVERHEAT LIGHT ILLUMINATED. RAN QRH. CAUTION LIGHT REMAINED ILLUMINATED. GROUNDED - YES. TROUBLESHOT L/H FWD WINDOW OVERHEAT LIGHT PER B737-900 FIM 30-41 TASK 801. COULD NOT DUPLICATE FAULT. FAULT L/H FWD WINDOW D WINDOW OVERHEAT ISDR ASAA2019121191563Warning Light · false activationCAPTAIN FWD WINDOW OVERHEAT ILLUMINATED AFTER COMPLYING WITH QRH. GROUNDED - YES. CLEARED FAULTS ON L/H FORWARD WHCU BITE PER B737-900 FIM 30-41-TASK 801. COMPLIED WITH FIM 30-41-TASK 812 PLACED L/H FWD WINDOW SENSOR SELECT SWITCH TO THE SECONDARY POSITION WINSDR ASAA2019102203173Unknown · unknownSAT WAS NOT DISPLAYED ON MCDU MENU PAGE. GROUNDED - YES. RAN SATCOM LOCK-UP PROCEDURE IN QRH. SAT RESTORED AFTER CB RESET.SDR ASAA2019092730840Wire Harness · damaged#2 ENGINE LEFT HAND VBV ACTUATOR CONNECTOR HARNESS J10 (VBV-B SIDE) INSULATION IS DAMAGED. GROUNDED - YES. REMOVED & REPLACED J10 HARNESS REF B737-900 AMM 73-21-06-400-802-F00. ACCOMPLISHED FADEC SYSTEM TEST REF AMM 73-21-00-700-802-F00. ALL TESTS PASSED.SDR ASAA2019091130675Unknown · malfunctionedSATCOM LOCK UP. GROUNDED - YES. QRH PROCEDURE, APPLIED-SATCOM PROMPT IS DISPLAYED ON MCDU MENU PAGE AGAIN-NORMAL OPS.SDR ASAA2019082830537Unknown · malfunctioned34L CAT2 AUTOLAND / HGS REQUESTED: AT 100' AGL AIRCRAFT DRIFTED LEFT AND BEGAN EXCESSIVE DESCENT. HGS WARN ILLUMINATED AT SAME TIME. DISCONNECTED AUTOPILOT AND LANDED MANUALLY. ACFT ON SPEED, LOCALIZER AND GLIDESLOPE UNTIL 100 AGL. CRITICAL AREA CLEAR. GROUNDESDR ASAA2019082103433Generator · failedAPU AMBER FAULT LIGHT ILLUMINATED DURING START AT GATE, FOLLOWED QRH PROCEDURE AND FAULT LIGHT ILLUMINATED AGAIN DURING SECOND START ATTEMPT. GROUNDED - YES. REMOVED & REPLACED APU STARTER-GENERATOR REF B737-900 AMM 49-41-21. C/W B737-900 FIM 49-40 TASK 803, OSDR ASAA2019070429937Satcom · lockedSATCOM LOCKUP PROCEDURE PERFORMED. GROUNDED - YES. SATCOM RESET SUCCESSFUL.SDR ASAA2019070429914Fastener · looseREF T/C #78472000 #2 ENG INLET AND FANBLADES- DETAILED INSP. FOUND #1 1'O'CLOCK POS STRUT DAMAGED BY LOOSE FASTENER #1 RT MIDDLE FASTENER (M) ALF. GROUNDED - YES. REPLACED #2 ENG #1 O'CLOCK POS AFT ACOUSTICAL PANEL REF AMM 72-23-02/601.SDR ASAA2019052629524Not Reported · dirtyWHILE PERFORMING T/C 78273000 (CDU FAULTS) FOUND FAULT 77-20862, BOTTOM LEFT EGT SIGNAL IS OUT OF RANGE ON #2 ENGINE. GROUNDED - YES. ACCOMPLISHED EGT SYSTEM CLEANING FOR NR 2 ENG REF AMM 77-21-00-140-801. ETOPS GROUND VERIFICATION TEST SUCCESSFUL REF EEC TESTSDR ASAA2019052529485Support · wornDURING #1 ENGINE INLET INSP T/C #78472000 FOUND HIGH STAGE VALVE DUCT SUPPORT LINK ASSY WORN + LOOSE. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE HIGH STAGE VALVE DUCT SUPPORT LINK ASSY PER AMM 36-11-01. NO OTHER DEFECTS NOTED.SDR ASAA2019052029432Bypass Switch · faultyAPU FAULT LIGHT ILLUM. GROUNDED - YES. AIRCRAFT CHECKED AND RELEASED REF MEL 49-1B APU INOP DUE TO FAULT MSG STARTER GENERATOR OIL FILTER SHOWS CLOGGED. PERFORMED FIM 49-90 TASK 809 (STARTER GENERATOR OIL FILTER SHOWS CLOGGED). MAGNETIC PLUG INSPECTION GOOD, NSDR ASAA2019050929275Unknown · malfunctionedCONT CAB ZONE TEMP LIGHT ILLUMINATES ON RECALL, EXTINGUISHES WHEN RESET. GROUNDED - YES. RIGHT TEMP CONTROLLER SHOWED FLT DECK TRIM VALVE FAULT LOGGED. PERFORMED TEMP CONTROLLER BITE ON LEFT AND RIGHT CONTROLLERS, NO CURRENT FAULTS, NO HISTORY. RAN PACK SYSTEMSDR ASAA2019050729267Unknown · malfunctionedVTK AND MAP FLAG ON F/O SIDE. GROUNDED - YES. CLEARED BEFORE WE COULD RUN QRH.
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