N491AS
Service difficulty reports · 192
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 = 'N491AS' 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 = 'N491AS' 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 ASAA2025040957615Transition Panel · corrodedAFT CARGO R/H TRANSITION STA 727+4-727I+8 CORRODED IN MULTIPLE AREA. GROUNDED - YES. REMOVED DAMAGE, FOUND TO BE OUT OF LIMTS, REPAIRED IAW B737-900 SRM 53-00-53-2R-6W= 1" O= .040 R= .034 L= 1" D= .006.SDR ASAA2025040957614Transition Panel · corrodedAFT CARGO R/H TRANSITION STA 727I+8-767 CORRODED IN MULTIPLE AREAS. GROUNDED - YES. REMOVED DAMAGE, FOUND TO BE OUT OF LIMITS, REPAIRED IAW B737-900 SRM 53-00-53-2R-6W= 1" O= .040 R= .030 L= 1" D= .010.SDR ASAA2025040957613Web · corrodedAFT CARGO DOOR SILL WEB CORRODED. GROUNDED - YES. REMOVED DAMAGE FOUND TO BE OUT OF LIMITS, REMVOED AND REPLACED SILL WEB AFT CARGO DOOR IAW B737-900 SRM 51-40-02-0G-0W= 4" O= .045 R= .038 L= 1" D= .007.SDR ASAA2025040957612Shield · corrodedAFT CARGO SHIELD FWD OF DOOR CUTOUT CORRODED. GROUNDED - YES. REMOVED DAMAGE ON SHIELD. MAX MAT LOSS 0.007" FOUND TO BE OUT LIMITS AND REMOVED AND INSTALLED NEW SHIELD ON AFT CARGO COMPT IAW B737-900 SRM 53-60-15-1A-1 AND SRM 52-40-02-06-0W= 2" O= .050 R= .043SDR ASAA2025040957611Splice · corrodedFLOORBOARD SPLICE CORROED STA 767. GROUNDED - YES. FABRICATED REPLACEMENT FLOOR SPLICE TEE. AT STA 767 IAW B737-900 SRM 53-60-53-01-2, SRM 51-40-05-0G-0. W= 1" O= .070 R= .000 L= 1" D= .070SDR ASAA2025040957610Transition Panel · corrodedAFT CARGO L/H TRANSITION STA 727B-727I+8 CORRODED IN MULTIPLE AREAS. GROUNDED - YES. EVALUATION AT DAMAGE, 100% MAT LOSS, FOUND TO BE OUT OF LIMITS REPAIRED IAW B737-900 SRM 53-00-53-2R-RW = 1" O= .040 R= 0 L= 1" D= .040.SDR ASAA2025040957609Transition Panel · corrodedAFT CARGO L/H TRANSITION STA 727I+8-847 HAS MULTIPLE AREAS OF CORROSION. GROUNDED - YES. EVALUATED DAMAGE, 100% MAT LOSS FOUND TO BE OUT OF LIMITS REPAIRED IAW B737-900 SRM 53-00-53-2R-5W=1" O= .040 R= 0 L= 1" D= .040.SDR ASAA2025040857616Transition Panel · corrodedFWD CARGO TRANSITION AT RBL-21 CORRODED MULTIPLE AREAS BETWEEN STA 500A TO STA 500H+10. GROUNDED - YES. REMOVED CORROSION FOUND TO BE OUT OF LIMITS, REMVOED AND REPLACED FWD CARGO TRANSITION AT R-BL21 STA 500A TO 500H+10 IAW B737-900 SRM 53-00-53-2R-5W= 3" O= SDR ASAA2024051749704Battery Pack · no testPER T/C 78233001 EMER BAT PACK CAPACITY FUNCTIONAL CHECK, FOUND SOME BATTERY PACK FAIL THE TIME TEST AS FOLLOW: R2 AND L2 DOORS INSIDE AND OUTSIDE. R1 AND L1 DOORS INSIDE AND OUTSIDE. AFT GALLEY EXIT SIGN. GROUNDED - YES. REMOVED AND REPLACED THE FOLLOWING EMESDR ASAA2024050449433Light · detachedGALLEY FLOOR TRIPPING HAZARD. GROUNDED - YES. TRIPPING HAZARD FOUND TO BE FIRST 6" OF FLOOR PROXIMITY LIGHT PHOTO. STRIP. REMOVED & REPLACED A/C LEFT FIRST PHOTO PROXIMITY LIGHT STRIP REF AMM 33-51-15.SDR ASAA2024022748107Light · intermittentFORWARD AND AFT GALLEY EMERGENCY EXIT AISLE LIGHTS ILLUMINATED WITH EMER EXIT LIGHTS SWITCH IN BOTH ARMED AND OFF MODES. GROUNDED - YES. PERFORMED FIM 33-50 TASK 801 FOUNF TO BE AN INTERMITTENT FAULT.SDR ASAA2023110746067Igniter · failed#1 ENG R IGNITION FAILED TO LIGHT OFF. GROUNDED - YES. (RESOLVED ON W/O: 1976943 TASKCARD: N/R-00001 ) REPLACED ENGINE 1 RIGHT HAND IGNITER PLUG PER AMM 74-21-02. PERFORMED AMM TASK 74-00-00-040-802-FOO MMEL 74-1 RIGHT IGNITION SYSTEM TO RESTORE CONFIGURATION.SDR ASAA2023102745879Unknown · unknownR PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL, IT GOES OUT WHEN MASTER CAUTION PUSHED. GROUNDED - YES. ON DEFERRAL.SDR ASAA2023101745719Unknown · unknownCONT CAB ZONE TEMP ILLUMINATED ON RECALL. GROUNDED - YES. RELEASED PER MEL 21-21G. FLIGHT DECK PRIMARY TEMP CONTROL INOP. AUTH BY SEAMC MIKE 1659Z.PERFORMED CABIN TEMP CTRL BITE CHECK. REF FIM 21-61 TASK 801. NO FAULTS NOTED. CONT CABIN ZONE TEMP LIGHT EXTINGUSDR ASAA2023101645689Unknown · unknownDURING CRUISE VTK FLAG APPEARED MOMENTARILY ON FIRST OFFICER NAV DISPLAY DISAPPEARED AFTER 20 SECONDS. NO OTHER LOSS OF LNAV & VNAV OR FMC. GROUNDED - YES. PERFORMED B737-9 FIM 34-61 TASK 836 & RT FMC OPS NORMAL.SDR ASAA2023101545634Fmc · faultyAT ABOUT 200 AGL DURING AUTOLAND, WHEN STABILIZER TRIMMED NOSE UP, AN APPROACH WARNING ANNUNCIATED ON THE HUD, THE AUTOPILOT DISENGAGED & THE AIRCRAFT BEGAN LEVELING OFF AT ABOUT 100 AGL RUNWAY 16R. GROUNDED - YES. (RESOLVED ON W/O: 1972063 TASKCARD: N/R-00001SDR ASAA2023101345635Unknown · unknownAUTOLAND FAIL - AT 30' IN FLARE, APROACH WARN AND AUTO PILOT DISCONNECT. GROUNDED - YES. DFCS BITE SHOWS FLT LEG 1 CHANNEL A 22-11415 & 22-11479, CHANNEL B' 22-11323 & 22-11006, ALL LRU TESTS PASSED FIM 22-11 TASK 801, PERFORMED LAND VERIFIED TEST PASSED AMM 2SDR ASAA2023101045535Unknown · unknownRIGHT PACK CAUTION LIGHT ILLUMS DURING MASTER CAUTION RECALL PRIOR TO DESCENT. EXTINGUISHES WITH RESET. GROUNDED - YES. ON DEFERRAL.SDR ASAA2023100445434Idg · malfunctioned#2 GENERATOR WOULD NOT COME ONLINE AFTER STARTED. GROUNDED - YES. (RESOLVED ON W/O: 1970734 TASKCARD: N/R-00002 ) REMOVE AND REPLACE ENG 2 IDG IAW AMM 24-11-11-40-801 PERFROME OPERATIONAL TEST IAW AMM 24-11-00-700-803 ALL TEST PASS GOOD FOR SERVICE OMAR OCHOA SDR ASAA2023092345244Unknown · unknownDURING ACCOMPLISHMENT OF T/C# 78273000. FOUND #2 ENGINE WITH SHORT TIME FAULT MSG 75304-52 "THE VBV POSITION SIGNALS DISAGREE". GROUNDED - YES. (RESOLVED ON W/O: 1970750 TASKCARD: N/R-00001 ) ACCOMPLISHED T 78273000. ENGINE #2 IS NOT SHOWING ANY FAULTS IN CURRSDR ASAA2023091045018Unknown · unknownRIGHT PACK LIGHT ILLUMINATED ON RECALL, EXTINGUISHES WITH RESET. GROUNDED - YES. PERFORMED PACK TEMPERATURE CONTROL BITE PROCEDURE REF FIM TASK 21-62 TASK 801. NO FAULTS NOTED. PLACARDS REMOVED. THIS CLEARS MEL 21-32B. SEAMC MITCH NOTIFIED.SDR ASAA2023082844830Valve · faultyAMBER TAI INDICATION ABOVE #2 N1 GAUGE. GROUNDED - YES. CREW STATED THEY DID NOT OPERATE EITHER ENG COWL ANTI-ICE VALVES DURING THIS PARTICULAR FLIGHT. SUSPECT OVERPRESSURE COND DURING ENG OPERATION. PERFORMED OPS CHECK ON #2 ENG COWL ANTI-ICE VALVE VIA APU BLSDR ASAA2023082244739Unknown · unknownPRIOR TAXI WE RECEIVED AN FMC DISAGREE . GROUNDED - YES. COMPLETED FMC DISAGREE QRH PROCEDURE WHICH RESOLVED THE FMC DISAGREE.SDR ASAA2023081144539Unknown · unknownAIR TEMP SOURCE SEL KNOB VERY ERRATIC. WILL DANCE FROM 100F TO 0F & BACK UP ON ITS OWN. KNOB HAS TO BE JIGGLED TO CALM IT DOWN. THEN IT WILL CONTINUE AGAIN. GROUNDED - YES. ON DEFERRAL.SDR ASAA2023072944287Unknown · unknownGREEN ALTN LIGHT AND AMBER AUTO FAIL LIGHT ILLUMINATED SHORTLY AFTER LANDING. GROUNDED - YES. ON DEFERRAL.SDR ASAA2023071844114Unknown · unknownWHILE ACCOMPLISHING T/C 78273000 FOUND SHORT TERM FAULT #75-30452 " VBV POSITION DISAGREE" ON ENG 2. GROUNDED - YES. (RESOLVED ON W/O: 1962312 TASKCARD: N/R-00001 ) PERFORMED VBV ACTUATOR TEST ON #2 ENGINE REF FIM 75-32 TASK 803 ACTUATOR TEST PASS NO FAULTS NOSDR ASAA2023070943986Unknown · unknownFLIGHT CREW REPORTS THAT WHEN ENTERING CHARACTERS IN SATCOM SCRATCH PAD, (E.G. 12345), RESULTS IN KEY INPUTS APPEARING TO "STICK" (E.G. 1222334). GROUNDED - YES. ON DEFERRAL.SDR ASAA2023070243858Modulating Valve · faultyL & R PACK LIGHT, ON RECALL AFTER ENGINE START. GROUNDED - YES. PERFORMED FIM 21-53 TASK 821, FOUND L+R PZTC ZHOWING "THIS PACK TCV". PERFORMED FIM 21-62 TASK 830 + 831. BOTH TCV V139 + V141 SHOW 115AC. DUE TO RECENT HISTORY - REPLACED P5-17 PANEL. OPWEND /TAGSDR ASAA2023070243823Module · faultyCONT CAB TEMPERATURE CONTROLLER IN FULL COLD CONT. CABIN DUCT TEMP READS 44C AND INCREASINGLY STEADILY FLIGHT DECK TEMP UNABLE TO CONTROL. GROUNDED - YES. FOLLOWED FIM PACK TEMP CONTROL - BITE B737-900 FIM 21 62 TASK 801 FOUND FLT DECK SELECTOR FAULT - FOLLOWESDR ASAA2023070143886Unknown · unknownBEFORE T.O.D PASSENGER IN SEAT 3D REPORTED LIGHT SMOKE UPON PLUGGING INTO ELECTRICAL OUTLET. THEY IMMEDIATELY UNPLUGGED AND SMOKE STOPPED. GROUNDED - YES. ON DEFERRAL.SDR ASAA2023063043833Switch · inoperativeCAPT REPORTED RIGHT AFT PUMP LOW PRESSURE LIGHT WAS INOP. GROUNDED - YES. TROUBLESHOT TO VERIFY LIGHT; LOW PRESSURE WAS INOP. REMOVED AND REPLACED FUEL BOOST PUMP PRESSURE SWITCH. OPS CHECK GOOD, REF B737-900 AMM 28-42-11.SDR ASAA2023062643770Unknown · unknownBOTH EEC'S ALTN MODE AFTER ENGINE START. GROUNDED - YES. BOTH EEC'S TEST GOOD - NO FAULTS UPON ARRIVAL AT A/C - FOUND P5-68 POWER MANAGEMENT MODULE ENG. 1&2 SWITCHS IN THE ALTERNATE POSITION. SWITCHED BOTH TO NORMAL (ON)_ POSITION. REF. FIM 73-05 TASK 811, PERSDR ASAA2023061943636Spinner · erodedDURING #2 ENGINE FAN LUBE ASA TASK CARD 78472010 FRONT SPINNER CONE EROSION BEYOND LIMIT. GROUNDED - YES. REPLACED FRONT SPINNER CONE #2 ENGINE REF ASA TASK CARD 78472010.SDR ASAA2023061843613Unknown · unknownRIGHT AFT FUEL PUMP LO PRESSURE LIGHTS DO NOT ILLUMINATE WITH PUMP SELECTED OFF. LIGHTS DO TEST WHEN PRESSED ON WITH LIGHT TEST. GROUNDED - YES. CLEANED AND REINSTALLED RIGHT AFT FUEL PUMP PRESSURE SWITCH CONNECTOR AND PERFORMED OPS CK AND OPS NORMAL REF B737-SDR ASAA2023061043515Unknown · unknownP18-2 A9 CB POPPED DATA LOADER. GROUNDED - YES. RESET CIRCUIT BREAKER PER B737-900 AMM 20-60-01 DATA LOADER OPS CHECKS NORMAL.SDR ASAA2023052543456Battery Pack · no testEMERGENCY LIGHTS BATTERY PACK AT RH FS 500C+7.5 FAILS CAP CHECK GROUNDED - YES. REMOVED, REPLACED BATTERY PACK S/N 409598 AND OPS CHECK GOOD EMER LIGHT AT R2 DOOR IAW B737-900 AMM 33-51-06-960-805.SDR ASAA2023052543358Lamp · inoperativeEMERGENCY EXIT LIGHT OUTSIDE AFT LEFT OVERWING EXIT INOP. GROUNDED - YES. REMOVED, REPLACED AND OPS CHECK GOOD EMER LIGHT OUTSIDE AFT LEFT OVERWING EXIT IAW B737-900 AMM 33-51-06-960-801.SDR ASAA2023052443364Unknown · unknownMULTIPLE INTERIOR & EXTERIOR EMERGENCY EXIT LIGHTS INOP R2 ABOVE & SIDE (INTERIOR) L2 ABOVE & SIDE (INTERIOR) L1 ABOVE & SIDE (INTERIOR) LEFT AFT WING EMER EXIT (EXTERIOR) R2 (EXTERIOR). GROUNDED - YES. DEEP-CYCLE PROCEDURE ACCOMPLISHED FOR ALL APPLICABLE EMERSDR ASAA2023052143443Battery · inoperativeEMERGENCY LIGHT AT ROW 27L INOP GROUNDED - YES. REPLACED POWER SUPPLY/BATTERY PACK S/N 409499 FOR EMERGENCY LIGHT AT ROW 27LSDR ASAA2023050343134Unknown · unknownRH PACK LIGHT ILLUMINATED ON RECALL EXTINGUISHED WITH MASTER CAUTION RESET. GROUNDED - YES. PERFORMED PACK TEMP CONTROL BITE TEST FOUND LOOSE TRIM VALVE FAULT PERFORMED B737-900 FIM TASK 21-22 TASK 835 FAULT CORRECTEDSDR ASAA2023042543039Acm · faultyDURING OPERATION OF R/H PACK. PACK TRIP OFF LIGHT ILLUMINATES AND WILL NOT RESET. GROUNDED - YES. ACCOMP PZTC BITE CK R/H PACK TCV FAULTED. REF B737-FIM 21-62 TASK 801. RMVD/RPLCD R/H PACK TCV LK CK GOOD BUT R/H PACK DISCHARGE TEMP CLIMBS TO 90 DEG C AND PACK SDR ASAA2023041742944Unknown · unknownRIGHT PACK LT ILLUM ON MC RECALL EXTINGUISHES WITH RESET. GROUNDED - YES. PERFORMED BITE TEST ON ZONE TEMP CONT UNITS, REF B737-900 AMM 21-61-00-700-806-002; FOUND SRADA EXIT ACTUATOR FAULT ON CONT 2. ACCOMP B737-900 FIM 21-53 TASK 821. PZTC BITE CK ACCOMPLISSDR ASAA2023032742614Unknown · unknownON TAKE OFF A/T DISCONNECTED AND FAILED TO RE ENGAGE ON TAKE OFF OR CRUISE. GROUNDED - YES. PERF A/T BITE PER B737-900 FIM 22-31 TASK 801. ALL REQ TESTS PASSED, NO DEFECTS FOUND AT THIS TIME. PERF LLM TEST REF B737-900 AMM 22-11-00. ALL REQ TESTS PASSED. AC APSDR ASAA2023021341961Valve · faultyPACK 2 ILLUMINATED ON RECALL. GROUNDED - YES. ACCOMPLISHED PACK TEMPERATURE CONTROL BITE PROCEDURE REF B737-900 FIM 21-62 TASK 801. #2 CONTROLLER SHOWS THIS PACK TCV HARD FAIL. R & R RIGHT PACK TCV V141 REF B737-900 AMM 21-51/401 OPS CK GOOD.SDR ASAA2023012641662Modulating Valve · faultedCONT CAB TEMP. UNCONTROLLABLE, DUCT SUPPLY 40 DEGREE C LEFT PACK TEMP 50 DEGREE C. GROUNDED - YES. REMOVED AND REPLACED TEMP CONTROL VALVE ON LH PACK AS REQUIRED LEAK CKD GOOD NO LEAKS OPS CKD GOOD. REF AMM 21-51-10-400-801 PERFORMED TEMP CONTROLLER BITE TEST SDR ASAA2023012641660Modulating Valve · faultedCONT CAB TEMP CONTROL KNOB WILL MODULATE THE CONT CAB SUPPLY DUCT TEMPERATURE UP + DOWN WITH A MOVEMENT UP + DOWN BY THE KNOB. THE LOWEST TEMPERATURE WE COULD ACHIEVE WAS 50'C HOWEVER- TOO HOT!. GROUNDED - YES. REMOVED AND REPLACED LH PACK TEMP CONTROL VALVE RSDR ASAA2023012641661Modulating Valve · faultedLEFT PACK LIGHT ILLUMINATES ON RECALL AND EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED LH PACK TEMP CONTROL VALVE REF B737-900 AMM 21-51-10-400-801 (ASA L/P 60116284).SDR ASAA2023012391587Satcom · inoperativeSAT 2 NOT WORKING. FMC SHOWS SAT2 NOT READY/FAIL. SAT 1 STILL WORKING FINE. GROUNDED - YES. PERFORMED SATCOM SYSTEM TEST REF B737-900 AMM 23-15-00. OPS CHECKS GOOD. ORIG SUB DATE: 1/23/2023SDR ASAA2023010141409Light · inoperativeDURING ACCOMPLISHMENT OF ASA T/C 78233008 "EMERGENCY LIGHTS-OPS CHECK" EMERGENCY ISLE LIGHT AT SEAT ROWS 25DEF AND 30DEF ARE INOP OPPOSITE ISLE EMERGENCY LIGHT OPS CHECKED NORMAL. GROUNDED - YES. VERIFIED DISCREP. FOUND EMERGENCY BATTERY PACK TO SAME INOP LIGHSDR ASAA2022123041326Warning Light · false activation#2 PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL. PACK LIGHT EXTINGUISHES UPON MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED PACK ZONE TEMP CONTROL BITE PER B737-900 FIM 21-62 TASK 801. LOGGED EXIT, FAULT CLEARED.
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