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.

SDR RAIA951110Tq Signal Cond · erraticFLT 7060 - JLN - RIGHT ENGINE WENT DOWN TO 50 PERCENT TORQUE ON TAKEOFF ROLL. MAINTENANCE DETERMINED IT TO BE AN INDICATION PROBLEM. AIRCRAFT FERRIED BACK TO STL TTL OFF WITHOUT INCIDENT. MAINTENANCE THEN REMOVED AND REPLACED NR 2 SIGNAL CONDITIONER. OPS CNov 10, 1995 · N436AM · Bag JETSTM3201SDR WTAA950295Tq Ind · failedRNO - RIGHT ENGINE TORQUE INDICATOR FAILED ON TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE REPLACED RIGHT ENGINE TORQUE INDICATOR. TORQUE INDICATIONS OPERATIONAL CHECK NORMAL DURING ENGINE GROUND RUNS. AIRCRAFT RETURNED TO SERVICE. (M)Nov 9, 1995 · N250YV · Emb EMB120RTSDR 96ZZZX127Tq Connectors · dirtyFLT 1002 - CREW ELECTED TO RETURN TO FIELD AFTER EXPERIENCING TORQUE FLUX, LT ENGINE. SHUT DOWN LT ENGINE, AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE CLEANED CONNECTORS ON NP AND TQ SENSORS IAW STANDARD MAINTENANCE PRACTICES. GROUND CHECK GOOD. AIRCRAFTNov 2, 1995 · N433JS · Dorner DO328100SDR 96ZZZM32Connector · dirtyFLT NR 5164 WAS TWENTY MINUTES INTO THE FLIGHT TO HTS WHEN THE LEFT ENGINE TORQUE INDICATION STARTED TO FLUCTUATE. THE CAPTAIN SELECTED THE SRL/TTL COMPUTERS BUT THE FLUCTUATIONS CONTINUED. THE CAPTAIN CONTACTED MAINTENANCE CONTROL AND DISCUSSED THE PROBLEM.Nov 2, 1995 · N190PC · Bag JETSTM3101SDR HEEA955946Transducer · fail testTRANSDUCER FAILED BY 0.3 VOLTS DURING YAW CSAS ELECTRICAL FUNCTION TEST.Nov 1, 1995 · N520WJ · Bolkms BK117A4SDR RAIA951041Press Transducer · failedSTL - FLT NR 7444 - LEFT EGT FLUX ON TAKEOFF ROLL. MAINTENANCE REMOVED AND REPLACED DELTA P/P PRESSURE TRANSDUCER. PERFORMED GROUND RUNS, OPS CHECK GOOD. (M)Oct 31, 1995 · N341TE · Bag JETSTM3201SDR HEEA955943Sensor · failedNO TORQUE INDICATION.Oct 31, 1995 · N8045T · Bell 214STSDR 95ZZZX6520Sensor · defectiveFLT 4148 - CREW NOTICED 50 PERCENT TORQUE FLUX LT ENGINE, ELECTED TO RETURN TO FIELD. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED LT ENGINE NP SENSOR IAW MM 77-12-00. GROUND CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE.Oct 28, 1995 · N430JS · Dorner DO328100SDR 95ZZZX6518Sensor · defectiveFLT 4086 - SHORTLY AFTER TAKEOFF, CREW NOTICED A LARGE TORQUE FLUX LT ENGINE. LT ENGINE SHUT DOWN, EMERGENCY WAS DECLARED. AIRCRAFT RETURNED TO FIELD AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED SENSOR IAW MM 77-12-00. GROUND CHECK GOOD. AIRCRAFT RETOct 28, 1995 · N430JS · Dorner DO328100SDR WTAA950291Tq Sig Cond · malfunctionedFAT - DURING SIMULATED RIGHT ENGINE FAILURE ON TRAINING FLIGHT, WITH RIGHT ENGINE AT APPROXIMATELY 25 PERCENT TORQUE, RIGHT PROPELLER AUTO FEATHERED. CREW SELECTED AUTO FEATHER SYSTEM OFF AND RIGHT ENGINE NP RETURNED TO NORMAL. AIRCRAFT RETURNED TO STATION WOct 25, 1995 · N454UE · Emb EMB120RTSDR MEJA951004Tq Signal Cond · failedFLIGHT 8043, TJSJ TO TTPP, THE LEFT TORQUE WOULD NOT INCREASE ABOVE 77 PERCENT. THE AIRCRAFT RETURNED TO TJSJ AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND BAD TORQUE SIGNAL CONDITIONER. REMOVED AND REPLACED TORQUE SIGNAL CONDITIONER IN ACCORDANCE WITH THEOct 24, 1995 · N2671V · Swrngn SA227ACSDR RAIA951032Tq Signal Cond · out of adjustRIGHT ENGINE DID NOT ACHIEVE TARGET TORQUE. MAINTENANCE ADJUSTED TORQUE SIGNAL CONDITIONER, GROUND RUNS OPS CHECK GOOD. (M)Oct 23, 1995 · N429AM · Bag JETSTM3201SDR COMA9511991Tq Signal Cond · defectiveTHE LEFT ENGINE TORQUE INDICATION FLUCTUATES. REPLACED THE LEFT ENGINE TORQUE SIGNAL CONDITIONER.Oct 21, 1995 · N264CA · Emb EMB120RTSDR SIMA952921Sensor · defectiveORD - FLT 4365 - AIR TURN-BACK. NR 2 ENGINE TORQUE SURGED PLUS AND MINUS 10 PERCENT. REMOVED AND INSPECTED T1.8 SENSOR. AIRCRAFT WAS RETURNED TO SERVICE. (X)Oct 19, 1995 · N271AT · Aerosp ATR42300SDR 96ZZZX121Indicator · inoperativeTORQUE INDICATION WENT TO ZERO. ABORTED TAKEOFF.Oct 19, 1995 · N670PA · Swrngn SA227ACSDR RAIA951025Tq Signal Cond · out of adjustSTL - FLT 7448 - LEFT ENGINE 5 PERCENT SHY TARGET TORQUE. MAINTENANCE RECALIBRATED LEFT TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SHEETS. GROUND RUNS CHECK GOOD. (M)Oct 18, 1995 · N434AM · Bag JETSTM3201SDR RAIA951019Tq Signal Cond · out of adjustSTL - FLT NR 7341 - RIGHT ENGINE ACHIEVED 90 PERCENT TORQUE. MAINTENANCE RECALIBRATED RIGHT TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SHEETS. CHECKED FOR BLEED LEAKS. GROUND RUN ENGINE PERFORMANCE CHECK GOOD. NO BLEED LEAKS FOUND. (M)Oct 14, 1995 · N428AM · Bag JETSTM3201SDR 95ZZZX6977Indicator · failedTHIS INDICATOR WAS INSTALLED DURING TROUBLESHOOTING OF TORQUE SYSTEM. SHORTLY THEREAFTER, IT BEGAN SPINNING INTERMITTENTLY ON POWER UP AND WOULD NOT FIND ZERO. ORIGINAL INDICATOR WAS REINSTALLED. RMA NR R004242.Oct 6, 1995 · N20875 · Snias AS350BSDR RAIA951006Egt Compensator · malfunctionedSTL - FLT NR 7309 - LEFT ENGINE DID NOT MAKE TARGET TORQUE. MAINTENANCE REPLACED LEFT EGT COMPENSATOR AND ADJUSTED TO GARRETT DSC SETTINGS. GROUND RUNS CHECK OK. (M)Oct 2, 1995 · N425AM · Bag JETSTM3201SDR RAIA951002Tq Signal Cond · out of adjustLAX - FLT 4760 - RIGHT ENGINE DID NOT MAKE TARGET TORQUE. MAINTENANCE ADJUSTED LEFT TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SETTING. GROUND RUNS GOOD. (M)Oct 2, 1995 · N866AE · Bag JETSTM3201SDR RAIA951001Tq Signal Cond · out of adjustSAN - FLT 4707 - LEFT ENGINE DID NOT MAKE TARGET TORQUE. MAINTENANCE ADJUSTED LEFT TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SETTING. GROUND RUNS GOOD. (M)Oct 1, 1995 · N972JX · Bag JETSTM3201SDR RAIA950941Tq Signal Cond · out of adjustBMI - FLT NR 7331 - RIGHT ENGINE WOULD NOT MAKE TARGET TORQUE. MAINTENANCE ADJUSTED RIGHT TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SETTINGS. GROUND RUNS CHECK GOOD. (M)Sep 29, 1995 · N426AM · Bag JETSTM3201SDR RAIA950940Tq Signal Cond · out of adjustSTL - FLT 7512 - RIGHT ENGINE LOW TORQUE. ADJUSTED RIGHT TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SETTING. GROUND RUNS CHECK NORMAL. (M)Sep 28, 1995 · N424AM · Bag JETSTM3201SDR RAIA950928Tq Signal Cond · out of adjustDEC - FLT NR 7285 - RIGHT ENGINE DID NTO MAKE TARGET TORQUE. MAINTENANCE ADJUSTED RIGGING AND RIGHT TORQUE SIGNAL CONDITIONER. GROUND RUNS GOOD. (M)Sep 19, 1995 · N424AM · Bag JETSTM3201SDR COMA9531159Ecu · defectiveDURING FLIGHT, THE LEFT ENGINE TORQUE INDICATION FLUCTUATES. REPLACED THE LEFT ENGINE ELECTRONIC CONTROL UNIT.Sep 19, 1995 · N361CA · Saab SF340ASDR RAIA950922Gaskets · leakingONT - FLT NR 4769 - RIGHT ENGINE WOULD NOT MAKE TARGET TORQUE. MAINTENANCE REPLACED RIGHT ENGINE BLEED AIR GASKETS. GROUND RUNS CHECK GOOD. (M)Sep 17, 1995 · N871JX · Bag JETSTM3201SDR WTAA950264Tq Monitor Sen · malfunctionedSFO - LEFT ENGINE TORQUE INDICATION REPORTED ERRATIC DURING TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE REPLACED LEFT ENGINE TORQUE SIGNAL CONDITION. PROBLEM REOCCURED ON SUBSEQUENT TAKEOFF ROLL. MAINTENANCE REPLACED TORQUE MONITOR SENSOR FSep 13, 1995 · N286UE · Emb EMB120RTSDR RAIA950918Tq Signal Cond · out of adjustONT - FLT NR 4769 - RIGHT ENGINE DID NOT MAKE TARGET TORQUE. MAINTENANCE ADJUSTED RIGHT TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SETTING. GROUND RUNS REVEALED NORMAL OPERATION. (M)Sep 13, 1995 · N972JX · Bag JETSTM3201SDR HEEA955740Transmitter · defectiveENGINE NOT MAKING POWER, TRANSMITTER READS LOW.Sep 13, 1995 · N22347 · Bell 412SDR 96ZZZX1499Torquemeter · shaftTORQUEMETER SHAFT RECEIVED IN DEFECTIVE CONDITION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Sep 8, 1995 · N911VU · Bolkms BK117B1SDR 96ZZZX977Indicator · faultyNR 2 ENGINE FAILED POWER ASSURANCE CHECK WHEN PERFORMED IAW AIRCRAFT FLIGHT MANUAL. ENGINE CHECKED FOR BLEED AIR LEAKS AND BLEED VALVE WAS SWAPPED. BURNER CAN, NR 1 NOZZLE AND WHEEL WERE VISUALLY INSPECTED WITH A BORESCOPE. FOUND OK. TORQUE GAUGE CHECKED ASep 6, 1995 · N204PC · Bolkms BO105SSDR 95ZZZX6975Indicator · faultyNR 2 ENGINE FAILED POWER ASSURANCE CHECK WHEN PERFORMED IAW ACFT FLIGHT MANUAL. ENGINE CHECKED FOR BLEED AIR LEAKS AND BLEED VALVE WAS SWAPPED. BURNER CAN, NR 1 NOZZLE, AND WHEEL WERE VISUALLY INSPECTED WITH A BORESCOPE. FOUND OK. TORQUE GAUGE CHECKED AND Sep 6, 1995 · N204PC · Bolkms BO105SSDR RAIA950901Connector · dirtySTL - FLT 7128 - LEFT ENGINE DID NOT MAKE TARGET TORQUE. MAINTENANCE CLEANED LEFT EEC CANNON PLUG. AIRCRAFT TT, 11,503.0. ENGINE TT, 121,021.0. (X)Sep 4, 1995 · N2FOR · Aerosp ATR42300SDR 96ZZZX1604Transducer · errorINACCURATE READINGS. REPLACED WITH NEW TRANSDUCER UNIT, CORRECTED PROBLEM.Aug 30, 1995 · N7060G · Bolkms BK117B1SDR RAIA950849Tq Signal Cond · out of adjustCMI - FLT 7437 - RIGHT ENGINE WOULD NOT MAKE TAKEOFF TORQUE BY 5 PERCENT. MAINTENANCE ADJUSTED RIGHT TORQUE SIGNAL CONDITIONER PER GARRETT DSC SETTINGS AND ADJUSTED EGT COMPENSATOR. GROUND RUNS REVEALED NORMAL OPERATION. AIRCRAFT TT 10,091.0. (X)Aug 29, 1995 · N424AM · Bag JETSTM3201SDR RAIA950848Tq Signal Cond · out of adjustSTL - FLT NR 7390 - ON TAKEOFF ROLL NR 1 ENGINE DID NOT MAKE TORQUE AND TTL DID NOT BYPASS FUEL-EGT WENT TO 670 DEGREES. MAINTENANCE RECALIBRATED LEFT ENGINE SIGNAL CONDITIONER. DEFERRED LT TTL AS PER MEL 76-2 CAT C. GROUND RUNS CHECK OK. (M)Aug 28, 1995 · N343TE · Bag JETSTM3201SDR WTAA950253Tq Ind · malfunctionedACV - LEFT TORQUE INDICATION ROSE TO LIMIT AT ACCELERATED RATE DURING TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE WAS UNABLE TO DUPLICATE REPORTED DISCREPANCY DURING ENGINE GROUND RUNS. ALL ENGINE INDICATIONS NORMAL. AIRCRAFT RETURNED TO SERAug 27, 1995 · N453UE · Emb EMB120RTSDR VTZA95263Signl Conditionr · out of adjustIAD/ELM - FLT 6212 - DURING TAKEOFF AT 1220 HRS ON 8-22-95, ABORTED TAKEOFF DUE TO RT ENGINE NOT MAKING TAKEOFF TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE ADJUSTED TORQUE SIGNAL CONDITIONER. AIRCRAFT WAS RELEASED AND APPROVED FAug 22, 1995 · N478UE · Bag JETSTM3201SDR RAIA950826Tq Sensing Line · leakingLAX - FLT NR 4763 - LEFT ENGINE OIL PRESSURE ERRATIC. MAINTENANCE REPLACED LEFT ENGINE NEGATIVE TORQUE SENSING OIL LINE. GROUND RUNS REVEALED NORMAL OPERATION AND LEAK CHECK GOOD. (M)Aug 17, 1995 · N972JX · Bag JETSTM3201SDR RAIA950824Tq Signal Cond · out of adjustJLN - FLT NR 7064 - RT ENGINE FAILED TO ACHIEVE TARGET TORQUE. MAINTENANCE ADJUSTED RT TORQUE SIGNAL CONDITIONER AS PER GARRETT DCS SETTINGS. GROUND POWER RUNS REVEALED ALL ENGINE PARAMETERS TO BE NORMAL. (M)Aug 17, 1995 · N422AM · Bag JETSTM3201SDR QXEA9500254Tq Harness · failedPDX - NR 2 ENGINE SURGED FROM FLIGHT IDLE WHILE ON SHORT FINAL, GO AROUND EXECUTED. ENGINE SURGED AGAIN 30 PERCENT TORQUE TO 70 PERCENT ON DOWN LEG. NR 2 ENGINE SHUTDOWN PER EMERGENCY CHECKLIST. AIRCRAFT LANDED SINGLE ENGINE WITHOUT INCIDENT. ENGINE HARNESAug 17, 1995 · N336PH · Dorner DO328100SDR RAIA950825Tq Signal Cond · out of adjustDEC - FLT NR 7301 - RT ENGINE DID NOT MAKE TARGET TORQUE, ENGINE AT 650 IS ONLY PRODUCING 90 PERCENT. MAINTENANCE ADJUSTED RT ENGINE TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SETTINGS. POWER CHECK GOOD ON GROUND RUN. (M)Aug 16, 1995 · N429AM · Bag JETSTM3201SDR 95ZZZX5556Transducer · faultyERRATIC TORQUE INDICATION. REPLACED WITH NEW UNIT(S) CORRECTED PROBLEM.Aug 16, 1995 · N185GA · Cessna 441SDR 9512669903Tq Ind · malfunctionedTHE NR 2 N1 INDICATOR FAILED ON TAKEOFF ROLL, THE TAKEOFF WAS ABORTED. THE N1 INDICATOR WAS PLACED ON MEL AND THE FLIGHT RESUMED ITS SCHEDULED ROUTE. SUBSEQUENT REPLACEMENT OF THE INDICATOR RESTORED NORMAL SYSTEM OPERATION.Aug 15, 1995 · N953N · Doug DC931SDR RAIA950819Tq Signal Cond · out of adjustSTL - FLT NR 7512 - RT ENGINE WOULD NOT MAKE TARGET TORQUE. ADJUSTED RT TORQUE SIGNAL CONDITIONER TO GARRETT DSC SETTING, GROUND POWER RUNS CHECK OK. ALL ENGINE PARAMETERS NORMAL. (M)Aug 13, 1995 · N430AM · Bag JETSTM3201SDR RAIA950812Tq Signal Cond · out of adjustJLN - FLT NR 7060 - RT ENGINE DOES NOT MAKE TORQUE. MAINTENANCE ADJUSTED RT ENGINE TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SHEET. GROUND POWER RUNS REVEALED NORMAL ENGINE PARAMETERS. (M)Aug 9, 1995 · N343TE · Bag JETSTM3201SDR RAIA950806Connector · dirtySTL - FLT NR 7176 - RT TORQUE IN FLIGHT UP TO 120 PERCENT BOTH ANALOG AND DIGITAL FUEL FLOW NORMAL. MAINTENANCE CLEANED ALL RT ENGINE WIRING HARNESS P/N 311198201, CANNON PLUGS. GROUND RUNS REVEALED NORMAL ENGNIE PARAMETERS. (M)Aug 8, 1995 · N426TE · Aerosp ATR42300SDR RAIA950805Tq Signal Cond · out of adjustSTL - FLT NR 7456 - LEFT ENGINE TORQUE DID NOT MAKE TARGET TORQUE. MAINTENANCE ADJUSTED LEFT TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC. GROUND RUNS REVEALED NORMAL OPERATION. (M)Aug 8, 1995 · N339TE · Bag JETSTM3201SDR 95ZZZX5890Tq Sig Cond · failedOSH - CREW ABORTED TAKEOFF WHEN RT ENGINE TORQUE GAUGE WENT INOP AND THE ENGINE AUTOFEATHERED. MAINTENANCE REPLACED THE TORQUE GAUGE (TORQUE SIGNAL CONDITIONER) AND PERFORMED SATISFACTORY ENGINE RUNS.Aug 8, 1995 · N295UX · Emb EMB120ERSDR HEEA955517Indicator · reads low#1 NEEDLE READ 10% LOW.Aug 2, 1995 · N3131S · Bell 212
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