JASC 7712
Service difficulty reports · 1,239
Reports filed under 7712 · Engine BMEP/Torque Indicating, 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 jasc_code = '7712' 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 jasc_code = '7712' 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 WIW2008F00000Torque Sensor · failedON 8/13/2008 AT APPROX 07:40 AM, AIRPLANE WHILE PERFORMING AERIAL APPLICATION EXPERIENCED A LOSS OF ENGINE POWER AND MADE AN EMERGENCY LANDING IN A FIELD. SUBSEQUENT INVESTIAGATION REVEALED THE IDLER GEAR BRG (PN 3103035-1) IN THE TORQUE SENSOR HAD FAILED ALLOSDR COEA0803742Transmitter · failedABORTED TAKEOFF. FLIGHT 100 GEG. ABORTED TAKEOFF DUE TO LOSS OF TORQUE INDICATION ON LT ENGINE. TAXIED AIRCRAFT BACK TO RAMP WITHOUT INCIDENT. REMOVED AND REPLACED THE LT ENGINE TORQUE TRANSMITTER. (A)SDR HNAA0800196Indicator · defectiveNR 1 TO GAUGE, ANALOG PORTION INOPERATIVE. REMOVED AND REPLACED NR 1 TQ IND IAW MM 77-10-00, PAGES 201 & 202. OPS CHECK GOOD, OK FOR SERVICE. (S)SDR NSVA2008023Indicator · erraticON APPROACH, RT TORQUE GAUGE ERRATIC, DROPPED TO ZERO, TRIGGERED AUTO COARSEN, SHUT DOWN ENGINE AND LANDED UNEVENTFULLY. REMOVED AND REPLACED RT DECU P/N ON 6071T20P18, P/N OFF 6071T20P16 S/N ON LMAT2255, S/N OFF ECDTT1933 AND RT TQ SENSOR P/N ON 0774088T42P0SDR SWIA200819570Signal Cond Unit · malfunctionedFLT 5098 - RECEIVED AN AUTO FEATHER AURAL WARNING ON TAKEOFF. REPLACED NR 2 ENGINE TORQUE SIGNAL CONDITIONER IAW EMB MM 77-11-01. OPS CHECK GOOD.SDR SWIA200819583Probe · contaminatedFLT 5732 - THE LEFT ENGINE WENT INTO AUTO-FEATHER WHILE ON GROUND. INSPECTED AND REMOVED MOISTURE FROM TORQUE PROBE. OPS CHECK GOOD.
SDR QXEA200800427Indicator · failedPDX- FLIGHT 2011, RETURNED TO THE FIELD FOR A NR 1 ENGINE TORQUE SURGE. ACCOMPLISHED A UNEVENTFUL LANDING. MAINTENANCE REPLACED THE PRESSURE TRANSDUCER WITH NO HELP. THEN REPLACED THE PRESSURE INDICATOR. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVISDR HNAA0800094Tscu · malfunctionedON TAKEOFF ROLE NR 2 PROP FEATHERED AT 30% TORQUE. ARM LIGHT WAS NOT ILLUMINATED. ABORTED TAKEOFF. UNABLE TO DUPLICATE PROBLEM. REPLACED NR 2 TSCU.SDR HNAA080054Indicator · failedON TAKEOFF ROLL NR 2 ENG TQ IND WENT TO ZERO, SPEED LESS THAN 40KTS, CYCLED CB'S J5 & K5, ENG GROUND RUN GOOD, INDICATION NORMAL. REPLACED TQ IND, INSPECTED & CLEANED ELECTRICAL CONNECTORS ON NR 2 ENG, OPS CHECK GOOD.
SDR HNAA0800054Indicator · failedDURING TAKEOFF ROLL, NR 2 TORQUE INDICATOR DROPPED TO ZERO. SPEED WAS LESS THAT 40 KNOTS. CIRCUIT BREAKERS J5 & K5 (TQ IND & COND) WERE CYCLED AND AIRCRAFT WAS RUN UP. CHECKS WERE GOOD AND AIRCRAFT RELEASED FOR FLIGHT. UPON ARRIVAL AT A MAINTENANCE BASE, TSDR CA071221011Signal Cond Unit · malfunctioned(CAN) TAKEOFF WAS ABORTED DUE TO NOISES SIMILAR TO ENGINE SURGE OR PROPELLER MALFUNCTION. INSPECTION REVEALED THAT THE ENGINE HAD REACHED 136 PERCENT TORQUE FOR A PERIOD LESS THAN 20 SECONDS. THE PROPELLER, TORQUE PROBE AND TORQUE SIGNAL CONDITIONER WERE REPLASDR CA070926001Valve · worn(CAN) FOUND WORN TORQUE METER VALVE IN POWER SECTION OF ENGINE GIVING ERRATIC ENGINE TORQUE INDICATION AT COCKPIT INDICATOR. VALVE REPLACED. NO OTHER PROBLEMS NOTED. (TC NR 20070926001)SDR CA071003011Sensor · misinstalled(CAN) ON DESCENT THE ENGINE EXPERIENCED AN UNCOMMANDED REDUCTION IN POWER ACCOMPANIED BY FEATHERING OF THE PROPELLER. PRELIMINARY INSPECTION REVEALED IMPROPERLY TORQUED TORQUE SENSOR AND POOR CONTINUITY BETWEEN THE AFU AND FUEL CONTROL.SDR CA070914016Torque Sensor · faulty(CAN) IN LEVEL FLIGHT, THE ENGINE LOST POWER ACCOMPANIED BY A LOUD NOISE. THE ENGINE WAS SHUTDOWN IN FLIGHT. SUBSEQUENT INSPECTION REVEALED A FAULTY TORQUE SENSOR. (TC NR 20070914016)SDR GLBA20060961Torquemeter · malfunctionedABORTED TAKEOFF, FLIGHT 5063, UPON TAKEOFF PILOTS REPORTED THAT THE LT TORQUE INDICATOR STUCK AND WOULD NOT WORK CORRECTLY. AIRCRAFT RETURNED TO GATE. MAINTENANCE REMOVED AND REPLACED THE LT TORQUE GAUGE IAW MM 33-10. OPERATIONAL CHECK OF THE SYSTEM GOOD.SDR PNSA070601Indicator · faultyRIGHT ENGINE ERRATIC TORQUE INDICATIONS ABORTED TAKEOFF. REMOVED AND REPLACED TORQUE INDICATOR.SDR NSVA20070130Torque Sensor · dirtyNO TQ INDICATION ON LT ENGINE ON TAKEOFF ROLL. CLEANED AND INSPECTED TORQUE SENSOR IAW SAAB AMM 77-13-10-02. OPS CHECK GOOD.SDR CA070424011Idler Gear · loose(CAN) FOUND ON TAKEOFF ROLL, THE RT CHIP LIGHT CAME ON THROUGH 70 KTS. THE TAKEOFF WAS ABORTED AND THE AC TAXIED BACK TO THE RAMP WITHOUT ANY FURTHER INCIDENT. AT THIS TIME MAINT HAD DONE A SOAP SAMPLE AND FOUND METAL IN THE OIL FILTER. WHEN THE ENGINE WAS TSDR NSVA20070100Ecu · malfunctionedDURING ALL FLIGHT CONDITIONS RT ENGINE TORQUE FLUX +/- 3 PERCENT ITT FLUX PLUS/MINUS 5 DEGREES ENGINE OIL PRESSURE FLUX PLUS/MINUS10 PSI. REMOVED AND REPLACED THE DECU IAW CHAPTER 76-10-57-04 OF THE SAAB 340-AMM P/N 6071T20P16, P/N ON 6071T20P18 S/N OFF ECDT1SDR SWIA200718070Signal Cond Unit · malfunctionedON CLIMB-OUT, RIGHT TORQUE WENT TO 118 PERCENT. REPLACED SIGNAL CONDITIONING UNIT IAW 77-11-01 AND TORQUEMETER PICKUP PROBE P/N 3116942-01 IAW 77-11-02 IAW 71-00-00. OPERATIONAL CHECK GOOD.SDR QXEA200700441Sensor · malfunctionedSMF FLIGHT NR 2410: POWER PLANT MESSAGE ON ED AFTER PROPS CAME OUT OF FEATHER. AIRCRAFT RETURNED TO THE GATE. MAINTENANCE REQUESTED REMOVAL AND REPLACEMENT OF NR 2 PECU (P/N 699018002, S/N 1046) IAW AMM TASK 61-20-36-000-801 AND 61-20-36-400-801. OPS TEST FSDR PNSA070301Signal Cond Unit · brokenAFTER STARTING THE TAKEOFF ROLL, DID NOT GET TORQUE RISE. ABORTED TAKEOFF. POSSIBLY A STUCK GAUGE, SO TRIED IT AGAIN GETTING THE SAME PROBLEM, ABORTED AND RETURNED TO THE GATE. REMOVED AND REPLACED TORQUE GAUGE AND TORQUE SIGNAL CONDITIONER.SDR SWIA200717795Signal Cond Unit · malfunctionedON TAKEOFF, THE "AUTOFEATHER" SYSTEM WOULD NOT ARM. ABORTED T/O. REPLACED LEFT ENGINE TORQUE SIGNAL CONDITIONER. OPERATIONAL CHECKS GOOD. S/N OFF: 4713.SDR NSVA20070020Dcu · malfunctionedFOUND LT ENG IGNITION ILLUMINATED WITH TQ FLUX FULL SCALE AND ENGINE SURGING. REPLACED LEFT TORQUE SPEED SENSOR IAW GE MM 74-00-00, PN: 5066T92G05SN ON: 1253B, SN OFF: 51M0190B. REPLACED LEFT ENG DECU IAW GE MM CH 74-00-00. OPS CHECK GOOD. NO PROBLEMS NOTESDR SIMA200636006Indicator · failedLT TORQUE GAUGE WENT TO ZERO, RETURNED TO DEPARTURE. REMOVED AND REPLACED TORQUE INDICATOR IAW AMM 77-13-05. OPERATIONAL CHECKED GOOD, RETURNED AIRCRAFT TO SERVICESDR AC2A113281Transmitter · failedSHORTLY AFTER TAKING OFF FROM ST37 I EXPERIENCED A NR 2 ECU FAILURE TO THE HIGH SIDE. FOLLOWED THE EMERGENCY CHECKLIST BY GOING TO MANUAL CONTROL OF NR 2 ENGINE AND RETURNED TO BASE WITHOUT FURTHER INCIDENT. THE MECHANICS DETERMINED THAT THE NR 2 ENGINE TORQUSDR CA061222006Indicator · malfunctioned(CAN) ENROUTE THE CREW OBSERVED DRAMATIC FLUCTUATION IN THE NR 2 ENGINE TORQUE INDICATOR. THE AIRCRAFT RETURNED TO POINT OF DEPARTURE WITHOUT INCIDENT. AFTER TROUBLE SHOOTING MAINTENANCE REPLACED THE NR 1 TORQUE INDICATOR AND THE SYSTEM WAS CHECKED SERVICEABLESDR CA061219023Engine · malfunctioned(CAN) IN CRUISE THE ENGINE EXPERIENCED TORQUE FLUCTUATIONS ACCOMPANIED BY INCREASED ITT TEMPERATURES. THE ENGINE WAS SHUTDOWN IN FLIGHT AND THE AIRCRAFT DIVERTED TO POINT OF DEPARTURE. MFG WILL MONITOR INVESTIGATION OF THE EVENT AND ADVISE OF ROOT CAUSE ONCESDR NSVA200600213Indicator · erraticERRATIC TQ +/- 5 PERCENT RT ENGINE. REMOVED AND REPLACED TORQUE INDICATOR P/N ON 10225N01W00 S/N NR 367A WO NR 0270543 P/N OFF 10225N01W00 S/N OFF NR 349A. ALSO, REMOVED AND REPLACED ENG RPM IND P/N OFF 10224N01R000 S/N OF 362 S/N OF 494. TORQUE IND MM 77-1SDR QXEA200602946Indicator · malfunctionedLMT FLIGHT NR 2240 ON TAKEOFF ROLL, NR 1 ENGINE PRODUCED 60 PERCENT TORQUE WHILE NR 2 ENGINE PRODUCED RATED POWER. TAKEOFF POWER IS APPROXIMATELY 99 PERCENT. POWER LEVERS WERE MATCH EVENLY. MAINTENANCE COMPLIED WITH ENGINE RUNS FOR MFC INSTALLATION AND PCU INSSDR CA061027003Torque Sensor · damaged(CAN) UPON TAXI INTO AIRPORT, THE RT ENGINE SHUT DOWN DUE TO THE CENTER GEAR ON THE TORQUE SENSOR SHAFT & WHERE NUT HOLDS THE GEAR ON BROKE OFF. AT THIS TIME THE A/C WAS AT THE TERMINAL AND NO PROBLEMS AROSE DUE TO THIS INCIDENT. SUSPECT THE NUT ON THE SHAFT WSDR NSVA200600173Dcu · malfunctionedLT ENG TORQUE IND FLUX DOWN TO 0, THEN HAD IGN LIGHT. NOT ACCOMPANIED BY AIRCRAFT YAW. REMOVED AND REPLACED LT DECU REF 74-00-00. OPS CHECK LT ENG REF 71-00-00. OPS CHK GOOD, PN OFF: 6071T20P17, SN OFF: LMD12201 (?), PN ON: 6071T20P17SN ON: ECDT1332.SDR NSVA200600168Torque Sensor · fluctuatesDURING CLIMB-OUT AFTER TAKEOFF, LEFT TORQUE FLUCTUATED + OR - 10 - 15 PERCENT LEFT IGNITION LIGHT ILLUMINATED FOR 7SECONDS. CLEANED TORQUE SENSORS, INSTALLED THE DEC TEST HARNESS AND PERFORMED AN OPERATIONAL CHECK OF THE SYSTEM WITH ENGINES RUNNING. ALL INDISDR NSVA200600167Torquemeter · stuckRT TQ GAUGE STUCK AT 2400 WITH NO POWER OR ENGINES RUNNING. REMOVED AND REPLACED RT TORQUE GAUGE PER BMM 31-10-00. RUN UP CK NORMAL.SDR CA061019005Indicator · leaking(CAN) OIL IN GAUGE GLASS. REMOVED FOR REPAIR AT INSTRUMENT SHOP. (TC NR 20061019005)SDR CA060906017Engine · malfunctioned(CAN) ENGINE TORQUE WAS SEEN TO FLUCTUATE ON APPROACH AND THE ENGINE WOULD NOT RESPOND TO THROTTLE INPUT. THE ENGINE WAS SHUTDOWN IN FLIGHT. MFG WILL INVESTIGATE THE INCIDENT AND ADVISE OF ROOT CAUSE ONCE ESTABLISHED. (TC NR 20060906017)SDR HEEA110761Transducer · failedNR 1 TORQUE INDICATING SYSTEM FAILED DURING FLIGHT. MAINTENANCE REPLACED THE NR 1 TORQUE TRANSMITTER.SDR NSVA200600122Ecu · malfunctionedL TORQUE GAUGE FLUCTUATES +/- 20 PERCENT FROM SET TORQUE, NO CHANGE IN ITT, NG OR FUEL FLOW, NO AUDIBLE CHANGE IN POWER, NO YAW MOVEMENT. IGNITION LIGHT TURNS ON TORQUE IS RESTORED. REMOVED AND REPLACED LEFT ENG DECU IAW 76-10-57-04. OPS CHECK GOOD, PN ON/OSDR CA060810005Transmitter · failed(CAN) ON TAKEOFF RT TORQUE TRANSMITTER WAS READING HIGH AIRCRAFT RETURNED AIRPORT. AIRCRAFT ELECTRICAL POWER TURNED OFF AND TORQUE INDICATOR WENT TO ZERO. A GROUND RUN WAS ACCOMPLISHED AND TORQUE INDICATION WAS NORMAL AT HIGH AND LOW POWER SETTINGS. AIRCRAFT RSDR MALA060496Panel · faultyAFTER TAKEOFF OBSERVED FLUCTUATIONS ON RT ENGINE. THIS OCCURRED WITH CTOT ON AND OFF AND PROP SYNC ON AND OFF. AIR RETURN. REMOVED AND REPLACED CTOT PANEL.SDR QXEA200601911Warning System · malfunctionedSEA FLIGHT NR 2380: POWER PLANT MESSAGE ILLUMINATED ON ED. MAINTENANCE FOUND FAULT 132 ON NR 2 ENGINE TORQUE INDICATOR. EXAMINED PCU AND O/S GOVERNOR FOR LEAKAGE. NO LEAKS NOTED. CLEARED PEC FAULT CODES IAW Q400 AMM 61-20-36-070-801. FAULTS CLEARED. POWESDR TRBA2006056Sensor · defectiveWHILE IN CLIMB, NR 2 ENGINE TQ FLUX OF 10 PERCENT AT 1,000 FTS, AFTER TAKEOFF INCREASE 20-30 PERCENT. RETURNED TO AIRPORT AND IN FINAL WENT TO 0 PERCENT THEN BACK TO 78 PERCENT TWICE. ENGINE WAS SHUTDOWN. EMERGENCY LANDING PERFORMED. REMOVED AND REPLACED RSDR CA060724004Limiter · failed(CAN) PILOT SNAG: ENGINE POWER LOST IN FLIGHT HAD TO USE MANUAL OVERRIDE. RECTIFICATION: REPLACED TORQUE LIMITER P/N 3244882-1, S/N C50254 WITH REMOVED SERVICEABLE UNIT FROM ENGINE S/N PR0116 P/N 3244882-1 S/N C50621. ALL APPLICABLE ENGINE RUNS COMPLETED AND SDR CA060731015Limiter · malfunctioned(CAN) IN DESCENT THE ENGINE WOULD NOT RESPOND TO THROTTLE INPUT. THE MANUAL FUEL CONTROL OVER-RIDE WAS ENGAGED, AN EMERGENCY DECLARED AND THE AIRCRAFT LANDED WITHOUT INCIDENT. THE ENGINE TORQUE LIMITER WAS SUBSEQUENTLY DETERMINED TO BE FAULTY AND WAS REPLACEDSDR KBM2006F00232Transmitter · fluctuatesTORQUE TRANSMITTER, UNIT FLUCTUATED, REMOVED AND REPLACED. (K)SDR NSVA200600075Connector · dirtyRT TORQUE INDICATION WENT TO ZERO DURING TAKE-OFF. THOROUGHLY CLEANED CANNON PLUGS FOR TORQUE SENSOR AND DEC CANNON PLUGS GROUND RAN A/C OPS CK GOOD TORQUE INDICATION IS NORMAL AT THIS TIME.SDR NSVA200600074Connector · looseON T/O ROLL RT TORQ GAUGE FLUCTUATED BETWEEN 80%-30% CTOT WAS NOT ARMED, THEN RT ENG LIGHT ILLUMINATED. SECURED AND LOCKED CANNON PLUG BACK IN PLACE ON TORQ RT INDICATOR. HAD CAPTAIN RUN THE RT ENGINE. COULD NOT DUPLICATE PROBLEM. OPS CHECK GOOD.SDR 05032006IIndicator · failedINFLIGHT RT TORQUE INDICATOR DROPPED TO ZERO AND STAYED AT ZERO FOR THE REMAINDER OF THE FLIGHT. ALL OTHER INDICATIONS NORMAL. R&R RT TORQUE INDICATOR, PN OFF 9302472006, PN ON 10225N01W00, SN OFF 09880445, SN OFF 09880445. OPS CHECK GOOD.SDR CA060609002Transmitter · failed(CAN) TAKEOFF WAS REJECTED WHEN THE RT ENGINE TORQUE GAUGE BEGAN TO INDICATE ERRATICALLY, MEL 77-02 WAS USED FOR RELIEF AND THE AIRCRAFT CONTINUED ITS TRIP. MAINTENANCE DETERMINED THAT THE TORQUE TRANSMITTER HAD FAILED. THE TRANSMITTER WAS REPLACED, TESTED SESDR OXK2006F00000Gearshaft · failedENGINE, SN P20186, EXPERIENCED AN UN-COMMANDED INFLIGHT SHUTDOWN, ON SITE INSPECTION REVEALED THAT THE FUEL PUMP DRIVE TRAIN HAD BECOME UNCOUPLED. TEARDOWN INSPECTION REVEALED FAILURE OF SPUR GEARSHAFT PN 8968042, COMPONENT OF TORQUE SENSOR PN 31017262, SN P2
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