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 COM20384Tq Indicator · defectiveRIGHT ENGINE DOES NOT ACHIEVE REQUIRED TORQUE FOR TAKEOFF. REPLACED RIGHT TORQUE INDICATOR GAUGE.Jul 26, 1995 · N27119 · Swrngn SA227ACSDR RAIA950737Tq Signal Cond · out of adjustSTL - FLT 7510 - THE NR 2 ENGINE WOULD NOT MAKE TARGET TORQUE. RECALIBRATED TORQUE SIGNAL CONDITIONER. (W)Jul 25, 1995 · N436AM · Bag JETSTM3201SDR 95ZZZM565Connector · dirtyFLT NR 4145 - AFTER DEPARTURE, RIGHT ENGINE HAD LARGE FLUCTUATIONS IN RPM, EGT AND TORQUE. REDUCED POWER AND ENGINE STABILIZED, RETURNED TO FIELD. CLEANED CANNON PLUGS ON RIGHT ENGINE TORQUE SIGNAL CONDITIONER. GROUND RUN AND OPERATIONAL CHECK OF ENGINE GOOJul 25, 1995 · N845JS · Bag JETSTM3101SDR SWIA95609Tq Indicator · malfunctionedRT ENGINE TORQUE STICKS AT 20 PERCENT. REMOVED AND REPLACED RT TORQUE GAUGE, OPS CKS GOOD.Jul 23, 1995 · N2699Y · Swrngn SA227ACSDR VTZA95233Tq Signal Cond · out of adjustFLT NR 6565 - IAD-GSO - DURING TAKEOFF, ABORTED THE TAKEOFF DUE TO THE LEFT ENGINE NOT MAKING TAKEOFF TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE RECALIBRATED THE TORQUE SIGNAL CONDITIONER. AIRCRAFT WAS RELEASED AND APPROVED FORJul 21, 1995 · N484UE · Bag JETSTM3201SDR RAIA950733Strain Gauge · failedSTL - FLT 7366 - THE NR 1 SURGING AND TORQUE INDICATOR PEGGGED. REPLACED NR 1 ENG STRAIN GAUGE. (W)Jul 21, 1995 · N433AM · Bag JETSTM3201SDR 95ZZZM566Torque Ind · fluctuationFLT NR 4101 - ON CLIMB-OUT RIGHT ENGINE EXPERIENCED AN EGT AND TORQUE FLUCTUATION WITH SRL COMPUTER DEFERRED. RETURNED TO PIT, CONDUCTED GROUND RUNS ON ENGINE IAW MM 71-00-00. OPERATIONAL CHECK GOOD. UNABLE TO DUPLICATE DISCREPANCY. AIRCRAFT RETURNED TO SEJul 21, 1995 · N845JS · Bag JETSTM3101SDR 95ZZZX6280Tq Sensor · defectiveFLT 4228 - FLIGHT CREW REJECTED TAKEOFF AFTER NOTICING A TORQUE FLUX RT ENGINE. AIRCRAFT RETURNED TO GATE WITHOUT FURTHER INCIDENT. AIRCRAFT LATER FERRIED TO PIT WHERE MAINTENANCE REMOVED AND REPLACED RT ENGINE TORQUE SENSOR IAW MM 77-11-00. OPS CHECKED GOOJul 20, 1995 · N429JS · Dorner DO328100SDR 95ZZZX5889Tq Gauge · malfunctionedIMT - THE CREW ELECTED AN AIR TURN BACK AFTER THE LT ENGINE TORQUE GAUGE WENT TO ZERO ON BOTH ANALOG AND DIGITAL. AN UNEVENTFUL LANDING WAS ACCOMPLISHED AFTER WHICH MAINTENANCE SWAPPED TORQUE PROBES LT TO RT. ON A TEST RUN-UP, THE SYSTEM FUNCTIONED NORMALLY.Jul 20, 1995 · N293UX · Emb EMB120ERSDR 95ZZZM250Sensor · malfunctionFLT 3409 - FLL-TPA - WHILE ATTEMPTING TO SET TAKEOFF POWER, NR 1 ENGINE TORQUE DID NOT COME UP AND PROPELLER WENT INTO FEATHER. THE CREW ABORTED THE TAKEOFF AND RETURNED TO THE GATE WITHOUT INCIDENT. REMOVED AND REPLACED THE NR 1 TORQUE SENSOR ELECTRONIC CONJul 20, 1995 · N912HA · Dhav DHC8102SDR 95ZZZM249Tseu · malfunctionFLT 3409 - FLL-TPA - WHILE ATTEMPTING TO SET TAKEOFF POWER, NR 1 ENGINE TORQUE DID NOT COME UP AND PROPELLER WENT INTO FEATHER. THE CREW ABORTED THE TAKEOFF AND RETURNED TO THE GATE WITHOUT INCIDENT. REMOVED AND REPLACED THE NR 1 TORQUE SENSOR ELECTRONIC CONJul 20, 1995 · N912HA · Dhav DHC8102SDR VTZA95226Tq Signal Cond · out of adjustFLT 6247 - IAD-BGM - ABORTED TAKEOFF DUE TO THE LEFT ENGINE NOT MAKING TAKEOFF TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE RECALIBRATED THE TORQUE SIGNAL CONDITIONER. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (MJul 19, 1995 · N495UE · Bag JETSTM3201SDR WTAA950231Tq Signal Cond · out of adjustSEA - LEFT ENGINE FAILED TO OBTAIN REQUIRED TAKEOFF TORQUE. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE ADJUSTED LEFT ENGINE TORQUE SIGNAL CONDITIONER. ENGINE OBTAINS TARGET TORQUE DURING GROUND RUN. AIRCRAFT RETURNED TO SERVICE. (M)Jul 12, 1995 · N425UE · Bag JETSTM3101SDR RAIA950708Tq Signal Cond · out of adjustCMI - FLT 7439 - THE LT ENGINE WILL NOT MAKE TORQUE. MAINTENANCE ADJUSTED LT ENGINE TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SETTING. GROUND POWER RUNS REVEALED NORMAL OPERATION. (W)Jul 12, 1995 · N337TE · Bag JETSTM3201SDR RAIA950703Tq Signal Cond · out of adjustSTL - FLT 7096 - RT ENGINE WOULD NOT MAKE TARGET TORQUE, WOULD ONLY PULL 99 PERCENT RPM. MAINTENANCE ADJUSTED RT ENGINE TORQUE SIGNAL CONDITIONER TO GARRETT DSC SETTING AND PROPELLER GOVERNOR LOW STOP. GROUND RUNS OK. (X)Jul 8, 1995 · N338TE · Bag JETSTM3201SDR HEEA955304Indicator · mis markedTORQUE IND. WORKS WELL, BUT RANGE MARKING OFF AS PER FLIGHT MANUAL. REPLACED WITH SERVICEABLE TORQUE IND.Jul 5, 1995 · N967MB · Bolkms BO105SSDR HEEA955303Indicator · defectiveTORQUE INDICATOR READING 4% LOW. GIVING INDICATION OF HIGH TOT ON POWER CHECK. REPLACED WITH SERVICEABLE TORQUE IND.Jul 5, 1995 · N10778 · Bell 206L1SDR VTZA95215Tq Sig Cond · out of calibIAD/EWR - FLT 6435 - ABORTED TAKEOFF DUE TO THE LEFT ENGINE ONLY MAKING 92 PERCENT TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE RECALIBRATED THE TORQUE SIGNAL CONDITIONER. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE.Jul 4, 1995 · N314UE · Jetair JETSTM4101SDR RAIA950645Ttl · faultyRIGHT ENGINE BYPASS AT 80 PERCENT TORQUE. AFTER CREW PERFORMED STATIC GROUND RUNS, DETERMINED RIGHT TTL CAUSING ENGINE BYPASS. DEFERRED RT TTL PER MEL76-2, CAT. C. (X)Jun 30, 1995 · N864AE · Bag JETSTM3201SDR 95ZZZX5064Indicator · defectiveNR 1 NEEDLE LAGS NR 2 NEEDLE AFTER 40 PERCENT RPM ATTAINED.Jun 30, 1995 · N317MC · Bolkms BK117C1SDR RAIA950642Tq Signal Cond · out of adjustSTL- FLT 7446 - LEFT ENGINE LOW TORQUE, WITH TTL ON AT 80 PERCENT. MAITNENANCE ADJUSTED LEFT ENGINE TORQUE SIGNAL CONDITIONER. GROUND POWER RUNS REVEALED NORMAL OPERATION. (X)Jun 28, 1995 · N434AM · Bag JETSTM3201SDR 95ZZZM286Tq Sig Cond Unit · failedFLT NR 7538 - ON DEPARTURE OUT OF DEN AT 200 FEET AGL THE RT ENGINE AUTOFEATHERED UNCOMMANDED, POWER WAS PULLED BACK ON THE RT ENGINE, AND THE SHUTDOWN AND SECURED THE CREW THEN RETURNED TO DEN. THE FDR DATA WAS DOWN LOADED BY MX PERSONNEL AND SENT TO PWA PERJun 28, 1995 · N436AW · Dhav DHC8311SDR 95ZZZX5731Control · defectiveOCCASIONAL RUNS IN 102 PERCENT MODE WITHOUT EXPLANATION. REMOVED AND REPLACED.Jun 27, 1995 · N317MC · Bolkms BK117C1SDR RAIA950639Tq Signal Cond · out of adjustSTL - FLT 7061 - RT ENGINE TORQUE LOW. ADJUSTED RT ENGINE, SIGNAL CONDITIONER SETTING PER GARRETT DSC. POWER RUNS REVEALED NORMAL OPERATION. (X)Jun 26, 1995 · N342TE · Bag JETSTM3201SDR 95ZZZX3400Connector · contaminatedAIRCRAFT RETURNED TO FIELD DUE TO RIGHT ENGINE TORQUE FLUCTUATION. THE SYSTEM WAS TROUBLESHOT AND THE TORQUE STRAIN GAUGE CANNON PLUG WAS FOUND CONTAMINATED. THE CANNON PLUG WAS CLEANED AND A FUNCTIONAL CHECK OF THE SYSTEM PERFORMED WITH ALL INDICATIONS NORJun 22, 1995 · N359AE · Swrngn SA227ACSDR VTZA95206Tq Signal Cond · out of adjustFLT NR 6377 - IAD-CRW - ABORTED TAKEOFF, DUE TO A TORQUE SIGNAL SPLIT. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE CALIBRATED BOTH TORQUE SIGNAL CONDITIONERS. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)Jun 20, 1995 · N485UE · Bag JETSTM3201SDR RAIA950623Tq Signal Cond · out of adjustSTL- FLT 7513 - BOTH ENGINES FAILED TO ACHIEVE TARGET TORQUE. MAINTENANCE ADJUSTED TORQUE SIGNAL CONDITIONERS. GROUND RUNS REVEALED NORMAL OPERATION. (X)Jun 20, 1995 · N343TE · Bag JETSTM3201SDR RAIA950615Ttl · failedSAN - FLT 4747 - RT ENGINE COULD NOT MAKE TARGET TORQUE. MAINTENANCE DEFERRED RT TORQUE TEMP LIMITER AS PER MEL. (M)Jun 14, 1995 · N864AE · Bag JETSTM3201SDR SIMA951642Tq Sensor · malfunctionedDFW - FLT 3805 - AIR TURN BACK, NR 2 ENGINE TORQUE SURGED WHILE LEVEL AT 4000 FEET ON DEPARTURE. REMOVED AND INSPECTED NR 2 ENGINE TORQUE SENSOR AND INTERTURBINE BLEED VALVE. COMPLIED WITH OVER TORQUE INSPECTION. GROUND OPS CHECK GOOD. AIRCRAFT WAS RETURNEDJun 13, 1995 · N429AT · Aerosp ATR72212SDR HEEA955173Transmitter · wont calibTRANSMITTER WILL NOT CALIBRATE AND NEEDLE DROPS TO ZERO.Jun 13, 1995 · N217UC · Bolkms BK117B1SDR SIMA951631Ctot Panel · malfunctionedLAW - FLT 3804 - ON TAKEOFF, POWER WAS MANUALLY SET AT APPROXIMATELY 85 PERCENT WHEN CTOT WAS ENGAGED FOR A MAX POWER TAKEOFF LEFT TQ 120 PLUS DEGREES, ABORTED TAKEOFF, RETURNED TO GATE. TORQUE NOT EXCEEDED 12 SEC TRANS IAW GE MM 72-00-00. REMOVED AND INSPECJun 12, 1995 · N112AE · Saab SF340ASDR 95ZZZX5295Transducer · failedTRANSDUCER FAILED. CONTINUOUS ROTATING INDICATION. REPLACED WITH NEW UNIT(S) CORRECTED PROBLEM.Jun 11, 1995 · N5194C · Bolkms BK117B1SDR WTAA950209Torque Ring · malfunctionedFAT - LEFT ENGINE TORQUE FLUCTUATION REPORTED DURING TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. ENGINE GROUND RUN-UP ACCOMPLISHED AFTER ABORTED TAKEOFF. UNABLE TO DUPLICATE DISCREPANCY. SUBSEQUENT TAKEOFF ATTEMPT ABORTED WITHOUT INCIDENT DUE TO SAME DJun 10, 1995 · N428UE · Bag JETSTM3101SDR WTAA950205Torque Ring · shortedSFO - LEFT ENGINE TORQUE GAUGE INDICATION FLUCTUATED PLUS AND MINUS 10 PERCENT DURING CLIMB-OUT. AIRCRAFT RETURNED TO STATION WITHOUT INCIDENT. MAINTENANCE SWAPPED TO 'BRIDGE 1' ON ENGINE TORQUE RING. TORQUE INDICATIONS NORMAL DURING ENGINE GROUND RUN. AIRJun 5, 1995 · N402UE · Bag JETSTM3101SDR 95ZZZX5904Indicator · spinsTORQUEMETER INDICATOR SPINS. REPLACED WITH NEW UNIT(S) CORRECTED PROBLEM.Jun 5, 1995 · N96LG · Snias AS350B2SDR COM11911Tq Cond Unit · defectiveLT PROPELLER AUTO FEATHER WILL NOT TEST. REPLACED THE TORQUE SIGNAL CONDITIONER.Jun 2, 1995 · N248CA · Emb EMB120RTSDR COM31091Ctot Syst · malfunctionedWITH CTOT ENGAGED, THE RT ENGINE TORQUE ADVANCED TO 120 PERCENT. PLACED CTOT SYSTEM ON DEFERRED MAINTENANCE LIST AND AIRCRAFT CONTINUED SERVICE.May 25, 1995 · N340SF · Saab SF340ASDR RAIA950517Tq Signal Cond · out of adjustSTL - FLT 7420 - THE LT COULD NOT MAKE TARGET TORQUE. MAINTENANCE CALIBRATED LT TORQUE SIGNAL CONDITIONER AND ADJUSTED LT EGT TO GARRETT DSC SETTINGS. GROUND RUNS REVEALED NORMAL OPERATION. (Z)May 23, 1995 · N430AM · Bag JETSTM3201SDR RAIA950516Tq Signal Cond · out of adjustSTL - FLT 7050 - LT AND RT ENGINES DID NOT MAKE TARGET TORQUE. MAINTENANCE ADJUSTED LT AND RT ENGINE TORQUE SIGNAL CONDITIONERS PER DSC SETTING. GROUND RUNS REVEALED NORMAL OPERATION AND ALL ENGINE PARAMETERS NORMAL. (Z)May 20, 1995 · N342TE · Bag JETSTM3201SDR HEEA955050Indicator · defective#1 NEEDLE CHATTERS AND RATCHETY.May 19, 1995 · N7128R · Bell 412SDR VTZA95177Signal Cond · out of limitsFLT 6258 - IAD-ALB - ABORTED THE TAKEOFF DUE TO THE RT ENGINE HAVING LOW TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE SWAPPED TO BRIDGE NR 2 AND RECALIBRATED PER CURRENT DSC SHEET. PERFORMED ENGINE RUNS AND ALL PARAMETERS WITHIN May 17, 1995 · N488UE · Bag JETSTM3201SDR 95ZZZM182Tq Signal Cond · out of adjustFLT 4062 - CREW ELECTED TO ABORT TAKEOFF WHEN LEFT ENGINE FAILED TO ACHEIVE TARGET TAKEOFF TORQUE. AIRCRAFT RETURNED TO GATE WITHOUT FURTHER INCIDENT. MAINTENANCE PERSONNEL ADJUSTED LEFT ENGINE TORQUE SIGNAL CONDITIONER IAW MM 72-00-00, CONDUCTED ENGINE GROUMay 14, 1995 · N851JS · Bag JETSTM3101SDR RAIA950509Tq Signal Cond · out of calSTL - FLT 7094 - LEFT TORQUE DROPPED FROM 75 PERCENT TO ZERO, ALL OTHER ENGINE PARAMETERS NORMAL. MAINTENANCE SWAPPED BRIDGES ON LEFT TORQUE SIGNAL CONDITIONER, AND CALIBRATED. GROUND RUNS REVEALED NORMAL OPERATION. (W)May 13, 1995 · N436AM · Bag JETSTM3201SDR RAIA950507Connector · moistureSTL - FLT 7341 - LEFT ENGINE LOST POWER, TORQUE DROPPED TO 50 PERCENT. MAINTENANCE CLEANED AND RESEATED LEFT FUEL BY-PASS VALVE CONNECTOR. PERFORMED GROUND RUNS ON SRL AND TTL SYSTEM ON LEFT SIDE ALL ENGINE PARAMETERS NORMAL. (M)May 11, 1995 · N428AM · Bag JETSTM3201SDR HEEA954964Indicator · defectiveINDICATOR LIGHTS TOO DIM.May 10, 1995 · N33008 · Bell 412SDR 95ZZZW755Tq Sig Cond · out of adjustPILOT RETURNED TO FIELD FOR RIGHT ENGINE APPEARING SHY OF TORQUE. THE ENGINE WAS INSPECTED. THE SIGNAL CONDITIONER CALIBRATION CHECKED. ENGINE GROUND RUN WITH ALL INDICATIONS NORMAL. (W)May 10, 1995 · N3117V · Swrngn SA227ACSDR RAIA950503Tq Signal Cond · out of calSTL - FLT 7400 - LEFT ENGINE NOT MAKING TORQUE. MAINTENANCE ADJUSTED RT TAKEOFF RPM AND RECALIBRATED LEFT TORQUE SIGNAL CONDITIONER. GROUND RUNS REVEALED NORMAL OPERATION. (W)May 7, 1995 · N431AM · Bag JETSTM3201SDR SWIA95572Torque Sensor · malfunctionedRIGHT ENGINE TORQUE GAUGE INOPERATIVE. FLUCTUATES. REPLACED THE RIGHT TORQUE SIGNAL CONDITIONER. CLEANED AND SECURED CONNECTORS. OPERATIONALLY CHECKS GOOD.May 4, 1995 · N194SW · Emb EMB120ERSDR HEEA954901Transmitter · failed#1 ENGINE TORQUE INDICATION READS ZERO ON GAUGE.May 1, 1995 · N230UN · Bell 230SDR 95ZZZX2934Torque Gauge · fluctuatesTORQUE GAUGE FLUCTUATES IN-FLIGHT. REMOVED AND REPLACED GAUGE, PART SENT IN FOR REPAIR.May 1, 1995 · N4571V · Hughes 369D
Back to JASC 7712