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 ASAA201912031488Unknown · malfunctionedTWICE ON THE GROUND AND ONCE IN FLIGHT AT CRUISE, VNAV MODE EXITED, ADDITIONALLY, FMA REMAINED IN TOGA MODE ON DEPARTURE, MANUALLY SELECTED DESIRED MODE(S) W/MCP CONTROLS. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 22-11 TASK 831, FMCS BITE - NO FAULTS ADIRS BISDR ASAA2019120391473Warning Light · illuminatedRIGHT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. ON DEFERRAL.SDR ASAA2019102331083Control Valve · malfunctionedAPU TREND DATA SHOWS CT5ATP TEMP HAS A SUDDEN SHIFT ABOVE THE 593 DEGREE THRESHOLD. GROUNDED - YES. REMOVED AND REPLACED APU REF B737-900 AMM 49-11-00-803, T/C 78349010 . LEAK CHECK GOOD. OPS CHECK GOOD.SDR ASAA2019101073973Sensor · failedDURING CRUISE THE RIGHT SIDE WINDOW HEAT ILLUMINATED. RAN QRH PROCEDURES AND REILLUMINATED. GROUNDED - YES. T/S PER B737-900 FIM 30-41 TASK 811. TURNING ON WINDOW HEAT CAUSES OVHT LIGHT IMMEDIATELY. BITE CK OF WHCU INDICATES WINDOW SENSOR FAILED LAST TEN LEGS.SDR ASAA2019100863958Warning Light · false activationRIGHT SIDE WINDOW HEAT OVERHEAT LIGHT. COMPLIED WITH QRH. LIGHT EXTINGUISHED AFTER 2 MIN COOL DOWN. GROUNDED - YES. ACCOMPLISHED WINDOW HEAT CONTROL UNIT BITE PROCEDURE REF B737-FIM TASK 30-41 TASK 801. NO FAULTS NOTED.SDR ASAA2019092330788Unknown · malfunctionedF/OS MCDU LINE SELECT BUTTON 2L WORKS INTERMITTENTLY IT OFTEN TAKES 3 PUSHES TO WORK. GROUNDED - YES. RESET POWER PER AMM 20-60-99 OK FOR SERVICE.SDR ASAA2019091130666Control Valve · faultedLEFT PACK LIGHT ILLUMINATED DURING RECALL. GROUNDED - YES. LT ZONE TEMP CONTROLLER BITE SHOWED TCV FAULT. FAULT CLEARED. REMOVED AND REPLACED LT TEMP CONTROL VALVE REF AMM 21-51-10. GROUND VERIFICATION SUCESSFUL REF AMM 21-51-10.SDR ASAA2019091130667Warning System · false activationLFT HAND PACK LIGHT ILLUMINATED ON RECALL. GROUNDED - YES. LEFT HAND PACK PRIMARY TEMP CONTROL. BITE OF #1 ZONE TEMP CONTROLLER SHOWS TCV FAULT LAST LEG. ACCOMPLISHED PACK ZONE TEMP CONTROLLER OPS CHECK REF AMM 21-61-21.SDR ASAA2019081203359Hf Comm · malfunctionedWHEN HF2 IS SELECTED ON RADIO TUNING PANEL "FAIL" IS SHOWN IN BOTH FREQUENCY WINDOWS. GROUNDED - YES. CW B737-900 FIM 23-11 TASK 802 BITE PROCEDURE REVEALED NO FAULTS ON RADIO TUNE PANEL. INTERMITTENT FAULT OK FOR SERVICE. CW GROUND VERIFICATION OPS NORMAL.SDR ASAA2019061399655Acm · damagedLEFT PACK INOP. GROUNDED - YES. PACK OPERATION SHOWED LITTLE TO NO AIRFLOW, LEFT PACK DUCT TEMP ROSE TO 95C AND AUTO SHUTDOWN OCCURED, ILLUMINATING PACK LIGHT. INSPECTED DIFFUSER/PLENUM, FOUND ACM IMPELLER BLADES BROKEN, DAMAGED. REMOVED AND REPLACED L/H PACK SDR ASAA2019061179633Actuator · failedDURING MASTER CAUTION RECALL, LEFT PACK LIGHT ILLUM. RESETS WITH MASTER CAUTION. GROUNDED - YES. L/H PACK RAM AIR EXHAUST ACTUATOR REPLACED DUE TO ACM IMPLELLER BLADES BROKEN. ALL WORK ACCOMPLISHED ON TASK CARD #N/R-00010, WORK ORDER 419849. THIS MAINTENANCE ASDR ASAA2019060229558Spacer · debondedREF TASK CARD 78472010 #1 ENGINE, ALL SPACERS DISBONDED. GROUNDED - YES. REMOVED & REPLACED #1 ENGINE SPACERS W/ NEW PER TASK CARD 78472010.SDR ASAA2019051529347Unknown · malfunctionedHF NR 1 DISPLAYS "FAIL FAIL". GROUNDED - YES. CYCLED NR 1 HF C/B. FAIL ALERT WENT AWAY. HF NR 1 OPS CHECKS OK. REF AMM 20-60-01.SDR ASAA201904297161Warning Light · false activationMASTER CAUTION ILLUMINATES ZONE TEMP FOR THE CONTROL CABIN AND EXTINGUISHES AFTER PRESSING RECALL. GROUNDED - YES. PERFORMED BITE PROC ON PZT CONTROLLER IAW B737-900 AMM 21-61-00-700-806-002. RESET BUTTON. NO FAULT NOTED. OPS NORMAL.SDR ASAA2019040978938Fmc · malfunctioned"MAP" & "VTK" DISPLAYED ON F.O. DISPLAY. "SINGLE FMC" MESSAGE ON SCRATCH PAD. RIGHT FMC FAIL DETERMINED. COMPLETED QRH CHECKLIST. RIGHT FMC OPS NOT RESTORED. GROUNDED - YES. RELEASED PER MEL 34-36J. RIGHT HAND FMC FAIL. REMOVED FLT CREW PLACARD. RIGHT FMC OPS SDR ASAA2019032828810Fmc · malfunctionedLEFT FMC FAILED. QRH PROCEDURE DID NOT RESTORE OPS. GROUNDED - YES. PERFORMED FIM 34-61 TASK 836. NORMAL OPS RESTORED.SDR ASAA2019031328611Sliding Window · defectiveINFORMATION ONLY: LEFT SIDE WINDOW OVERHEAT LIGHT ON AT CRUISE ALTITUDE. GROUNDED - YES. CO-PILOT SLIDING WINDOW IS DEFECTIVE. REPLACED LEFT NR 2 SLIDING WINDOW PER AMM 56-12-11-400-801, OPS CHECK AND LEAK CHECK NORMAL.SDR ASAA2019030628521Sensor · defectiveLEFT WINDOW OVERHEAT LIGHT CAME ON DURING CLIMB, FOLLOWED QRH PROCEDURE. LIGHT STAYED OUT FOR APPROX 15 MIN THEN CAME BACK ON WHILE LEVEL AT FL 310 OUTSIDE TEMP -39 DEGREE SAT. GROUNDED - YES. PERFORMED LEFT SIDE/SLIDER WINDOW CONT BITE REF FIM 30-41 TASK 801.SDR ASAA2019030628520Warning System · false activationLEFT WINDOW OVERHEAT LIGHT CAME ON DURING CLIMB FOLLOWED QRH PROCEDURE. OVER HEAT LIGHT DID NOT COME BACK ON. GROUNDED - YES. FOLLOWED QRH PROCEDURE. OVER HEAT LIGHT DID NOT COME BACK ON.SDR ASAA2019030328455Control Unit · failedL SIDE WINDOW HEAT ILLUMINATED MULTIPLE TIMES ON CLIMB AND DESCENT. PER QRH - TURNED OFF AND TO REMEDY OVERHEAT. GROUNDED - YES. BITE TEST OF WHCU SHOWS TEN CONSECUTIVE "SENSOR" FAULTS. VERIFY PASSES. SENSOR OHMS AT 314. COMPARED TO RIGHT SIDE, ALSO 314 OHMS. SDR ASAA2019030228428Warning System · false activationLT SIDE WINDOW HEAT OVERHEAT WARNING LIGHT ILLUMINATED IN FLIGHT. GROUNDED - YES. FOLLOWED QRH, WARNING LIGHT EXTINGUISHED AND REMAINED EXTINGUISHED.SDR ASAA2019022828429Warning System · false activationLEFT SIDE WINDOW OVERHEAT ILLUMINATED. EXTINGUISHED WHEN TURNED OFF AND BACK ON. GROUNDED - YES. SYSTEM CURRENTLY CHECKS GOOD, REFERENCE FIM 30-41- TASK 801.SDR ASAA2019022738318Warning Message · false activationLEFT OUTBOARD WINDOW OVERHEAT LIGHT ILLUMINATED DURING FLIGHT, EXTINGUISHED WHEN CYCLED OFF. GROUNDED - YES. CHECKED THE ELECTRICAL RESISTANCE OF THE WINDOW HEAT FILM REF B737-900 AMM 30-41-21-000-801. RESISTANCE READS 60.7 OHMS ON TAP #2 OF TB5016. THIS DESIGSDR ASAA2019022518315Sliding Window · overheatedLEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED LEFT SIDE #2 SLIDE WINDOW REF B737-900 AMM 56-12-11. OPS TEST NORMAL AMM 30-41-00. CLEARED MEL 30-11E.LEAK CHECKED GOOD REF AMM 05-51-91.SDR ASAA2019022518314Warning Light · false activationLEFT SLIDE WINDOW "L2" OVERHEAT LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED WHCU BITE PROCEDURE REF B737-900 FIM 30-41 TASK 801, NO CURRENT FAULT NOTED, FOUND HISTORY FAULT "P5-9 CONTROL POWER" LIGHT. RESET LEFT SIDE WINDOW HEAT, OPS CHECK GOOD.SDR ASAA2019022128281Warning System · false activationL SIDE OVERHEAT LIGHT ON IN FLIGHT RESET. GROUNDED - YES. RAN QRH AND LIGHT WENT OUT.SDR ASAA2019021628205Warning System · false activationLEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED SHORTLY AFTER REACHING CRUISE ALTITUDE. GROUNDED - YES. ACCOMPLISHED QRH PROCEDURE AND THE OVERHEAT LIGHT STAYED OUT OPS NORMAL.SDR ASAA2019021328170Warning System · false activationLEFT SIDE L2 WINDOW HEAT OVERHEAT LITE ILLUMINATED DURING PREFLIGHT. -FOLLOWED QRH - LIGHT WAS OFF AFTER 3-5 MIN COOL DOWN - THEN OVERHEAT LITE CAME BACK ON AFTER 5 MINS. GROUNDED - YES. RESET SYSTEM, OPS CHECK GOOD, AMM REF 30-41-00-710-801.SDR ASAA2019020928130Warning System · false activationRIGHT PACK LIGHT ILLUMINATED DURING CLIMB THROUGH APPROX FL 180. PER QRH PUSHED TRIP RESET. LIGHT EXTINGUISHED FOR APPROX 1 MINUTE AND THEN ILLUMINATED AGAIN. PER QRH SELECTED RIGHT PACK OFF. GROUNDED - YES. T/S PER FIM 21-53 TASK 818, RAN RIGHT PACK REF AMM 2SDR ASAA2019012227895Unknown · malfunctionedVTK/MAP CA SIDE MULTIPLE TIMES DURING CRUISE, WOULD RESET AFTER 30-60 SECS. STARTED TO DO IT CONT. PER QRH PUT FMC SWITCH TO BOTH ON RIGHT. GROUNDED - YES. REALIGNED IRU'S DISPLAYS NORMAL NO HISTORY 60 DAYS. FMC SWITCH BACK TO NORMAL.SDR ASAA2019010627669Control Valve · failedL PACK LT ON RECALL. GROUNDED - YES. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST REF AMM 21-61-00 SHOWS "THIS PACK TCV". REMOVED & REPLACED LT TEMP CONTROL VALVE PER AMM 21-51-10 OPS CHK GOOD. PERFORMED BITE PROCEDURE PER AMM 21-61-00 NO FAULTS FOUND.SDR ASAA2019010227655Warning System · false activationLT PACK LIGHT ILLUMINATES ON MASTER CAUTION RECALL, GOES OUT ON RESET. GROUNDED - YES. CW PZTC BITE REF FIM 21-62 TASK 801 NO FAULTS FOUND NO FURTHER ACTION IS NECESSARY.SDR ASAA2019010127626Warning System · false activationRIGHT PACK LIGHT ILLUMINATED ON RECALL. GROUNDED - YES. CW PZTC BITE REF FIM 21-62 TASK 801 NO FAULTS FOUND NO FURTHER ACTION IS NECESSARY.SDR ASAA2018123187606Warning Light · false activationCONTROL CAB ZONE TEMP CAUTION ILLUMINATED UPON RECALL. GROUNDED - YES. ACCOMPLISHED PACK/ZONE TEMP CONTROLLER BITE, #2 PZTC FLIGHT DECK TRIM VALVE LIGHT ILLUMINATED ON BIT AND PREVIOUS FLIGHT, BUT NOT VERIFY PHASE OF TEST. OPERATED BOTH PACKS, ABLE TO ADJUST FSDR ASAA2018121967447Warning Message · false activationLEFT PACK LIGHT ILLUMINATED ON MASTER CAUTION RECALL, LIGHT EXTINGUISHED ON MASTER CAUTION RESET. GROUNDED - YES. ACCOMPLISHED LEFT PACK/ZONE TEMPERATURE CONTROLLER BITE TEST, REF 21-61-00-700-806-002. NO ACTIVE FAULTS FOUND. PERFORMED LEFT PACK CABIN TEMPERATSDR ASAA2018103126683Oil Filter · cloggedAPU LUBE MODULE OIL FILTER DPI POPPED. GROUNDED - YES. REPLACED APU LUBE MODULE OIL FILTER REF AMM 49-91-13. LEAK CHECK GOOD.SDR ASAA2018091026056Satcom · malfunctionedSAT NOT DISPLAYED ON FMC MENU. GROUNDED - YES. RESET SATCOM CB PER QRH. SAT RESTORED.SDR ASAA201808165799Sensor · failedDURING CRUISE AT FL 350 L SIDE WINDOW OVERHEAT CAUTION LIGHT ILLUMINATED FOLLOWED QRH LIGHT EXTINGUISHED AFTER 3 1/2 MIN PER QRH, SWITCHED ON AGAIN "ON" LIGHT CAME ON AFTER 6 MINS, LIGHT EXTINGUISHED, BUT OVERHEAT LIGHT DID NOT ILLUMINATE. ACFT GROUNDED. ACSDR ASAA2018081545788Sensor · failedLEFT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED DURING CRUISE, EXTINGUISHED IAW QRH. ACFT GROUNDED. MOVED PRIMARY TEMP SENSOR TO SPARE TEMP SENSOR POSITION D TERMINAL AT THE LOWER FWD MOST TERM POSITION. WINDOW HEAT OPS CHECKED NORMAL IAW AMM 30-41-11SDR ASAA2018091125720Lever · faultyTHE START LEVER SIGNALS DISAGREE. 76-31362. LONG TIME FAULT DEFERRED PER T/C 78273000. GROUNDED - YES. NR 2 ENG EEC BITE NO LONGER SHOWS FAULTS 76-11362, -21362, OR -31362 IN RECENT FAULTS. DUE TO HISTORY, REPLACED NR 2 ENG START LEVER REF AMM 76-11-02. GROUNDSDR ASAA2018080645661Warning Light · false activationSIDE LEFT WINDOW OVERHEAT LIGHT ILLUMINATED. ACFT GROUNDED. IAW QRH, TURNED THE SWITCH OFF FOR 2 - 5 MINUTES AND TURNED BACK ON, THE OVERHEAT LIGHT REMAINED EXTINGUISHED.SDR ASAA2018072325489Control Lever · faultyDURING ACCOMPLISHMENT OF T/C 78273000 FOUND LONG TERM FAULT MSG 76-11362 THE START LEVERS SIGNAL DISAGREE ON NR 2 ENGINE. GROUNDED - YES. NR 2 ENG EEC BITE NO LONGER SHOWS FAULTS 76-11362, -21362, OR -31362 IN RECENT FAULTS. DUE TO HISTORY, REPLACED NR 2 ENG SSDR ASAA2018072325488Control Lever · faultyDURING ACCOMPLISHMENT OF T/C 78273000 NR 2 ENG FOUND LONG TERM FAULT MSG 76-21362. GROUNDED - YES. NR 2 ENG EEC BITE NO LONGER SHOWS FAULTS 76-11362, -21362, OR -31362 IN RECENT FAULTS. DUE TO HISTORY, REPLACED NR 2 ENG START LEVER REF AMM 76-11-02. GROUND VERSDR ASAA2018071625373Not Reported · malfunctionedAUTOLAND NOT SUCCESSFUL, SEA RUNWAY 34L, AIRCRAFT CENTERLINE 40' LEFT OF RUNWAY CENTERLINE TOUCHDOWN. GROUNDED - YES. ON DEFERRAL.SDR ASAA2018062425160Relay · faultyLONG TERM FAULT FOUND NR 2 ENG 76-31362 LEGS 2 4 AND 7. GROUNDED - YES. REMOVED & REPLACED R568 & R567 RELAYS REF WDM 76-21-21. ACCOMPLISHED EEC TEST REF AMM 73-21-00-700-804-F00. NO FAULTS NOTED.SDR ASAA2018061925135Sensor · dirtyFWD AND AFT TEMP CONTROLLERS APPEAR TO NEED SOME CALIBRATION WHEN OPERATED IN AUTO, WITH FWD AND AFT TEMP CONTROLLERS SET AT 9 AND 9:30 RESPECTIVELY THE CABIN TEMP IS ABOUT NORMAL (USUALLY THEY WOULD BE AT APPROXIMATELY THE 12 OCLOCK POSITION FOR THE SAME RESUSDR ASAA2018062175124Exciter · faultedAPU WILL NOT START, ON ATTEMPTS, NO ROTATION FAULT LIGHT ILLUMINATED. ACFT GROUNDED. INTERROGATED CDU, FOUND FAULT 49-41011, NO FLAME SHUTDOWN. CURRENT STATUS NO FAULTS AND NO MAINT HISTORY. CHANGED THE IGNITOR PLUG AND LEAD IAW AMM 49-41-54/49-41-52. CHSDR ASAA2018061855089Shim · distortedDURING T/C 7842002, FOUND SHIMS 1 THROUGH 24 HAD SIGNS OF AXIAL RETENTION DISTORTION MORE THAN 0.04 X 0.04 INCH ON THE NR 1 ENGINE. ACFT GROUNDED. REPLACED THE SHIMS IAW T/C 7872002.SDR ASAA2018061855086Blade · nickedDURING T/C 78472002 ON THE NR 1 ENGINE, FOUND PLATFORMS NR 5, 16, 18, 19, & 20 WITH NICKS ON AREA B. ACFT GROUNDED. REPLACED THE NR 1 ENGINE PLATFORMS IAW T/C 78472002.SDR ASAA2018061855067Warning Light · false activationZONE TEMP CONTROL CABIN LIGHT ILLUMINATED ON RECALL. EXTINGUISHED ON MC RESET. ACFT GROUNDED. PERFORMED A PACK TEMP CONTROL BITE IAW FIM 21-62, TASK 801. NO FAULTS FOUND. LIGHT REMAINS EXTINGUISHED ON RECALL. NO 90 DAY HISTORY.
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