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 COMA9630055Ctot · failedLEFT ENGINE ITT REACHED 934 DEGREES DURING TAKEOFF. FOUND CONSTANT TORQUE ON TAKEOFF SYSTEM DEFECTIVE. PLACED CTOT SYSTEM ON DEFERRED MAINTENANCE LIST. ACFT RETURNED TO SERVICE.Mar 6, 1996 · N356CA · Saab SF340ASDR SIMA960632Connector · dirtyHOU - FLT NR 3618 - AFTER TAKEOFF LEFT ENGINE TORQUE INDICATIONS DROPPED TO 60 PERCENT CREW ELECTED TO RETURN TO HOU. CLEANED ELECTRICAL CONNECTOR ON LEFT ENGINE T 1.8 SENSOR. GROUND PERFORMANCE RUNS WERE SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (M)Mar 3, 1996 · N270AT · Aerosp ATR72212SDR RAIA960242Tq Signal Cond · out of adjustSTL - FLT NR 7434 - ON TAKEOFF LEFT ENGINE ACHIEVED 89 PERCENT TORQUE. MAINTENANCE ADJUSTED LEFT TORQUE SIGNAL CONDITIONER PERFORMED GROUND RUNS OPERATIONAL CHECK GOOD. (M)Feb 26, 1996 · N433AM · Bag JETSTM3201SDR RAIA960241Tq Signal Cond · out of adjustSTL - FLT NR 7416 - LEFT ENGINE DID NOT MAKE TARGET TORQUE. MAINTENANCE ADJUSTED LEFT TORQUE SIGNAL CONDITIONER PERFORMED GROUND RUNS OPERATIONAL CHECK GOOD. (M)Feb 26, 1996 · N433AM · Bag JETSTM3201SDR RAIA960240Tq Signal Cond · out of adjustSTL - FLT NR 7448 - LEFT ENGINE DID NOT ACHIEVE TARGET TORQUE, ABORTED TAKEOFF. MAINTENANCE ADJUSTED LEFT TORQUE SIGNAL CONDITIONER PERFORMED GROUNDS RUNS OPERATIONAL CHECK GOOD. (M)Feb 25, 1996 · N428AM · Bag JETSTM3201SDR 96ZZZX1566Indicator · inoperativeINDICATOR UNIT INOPERATIVE UPON INSTALL. GAUGE READS APPROXIMATELY 20 PERCENT TQ ON BOTH ENGINES WITH JUST ELECTRICAL POWER APPLIED. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Feb 24, 1996 · N202LF · Bolkms BO105LSA3SDR RAIA960236Ttl Controller · out of adjustSTL - FLT NR 7424 - RIGHT ENGINE BYPASSED ON TAKEOFF ROLL. MAINTENANCE CALIBRATED TORQUE/TEMP LIMIT CONTROLLER. (M)Feb 23, 1996 · N436AM · Bag JETSTM3201SDR MALA964887Tq Signal Cond · failedFLT NR 3416 - ON CLIMB-OUT FROM DTW, THE LEFT ENGINES TORQUE INDICATION BEGAN TO FLUCTUATE AND THEN FAILED. THE AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED THE NR 1 TORQUE SIGNAL CONDITIONER. ALL SYSTEMS OPERATED SATISFACTORILY. (M)Feb 22, 1996 · N445MA · Swrngn SA227ACSDR AU960554Ctot System · inoperative(AUS) LH ENGINE CTOT (CONSTANT TORQUE ON TAKE-OFF SYSTEM) INOPERATIVE DUE TO INTERMITTENT ELECTRICAL PROBLEMFeb 21, 1996 · Saab 340BSDR MALA964886Tq Ring · failedFLT NR 3334 - ON CLIMB-OUT FROM DTW, THE NR 1 TORQUE GAUGE BEGAN TO FLUCTUATE BETWEEN ZERO AND 120 PERCENT. ALL OTHER ENGINE INDICATORS WERE NORMAL. THE AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED THE LEFT TORQUE RING. SYSTEM OPERATED SATISFACTORILY. (Feb 20, 1996 · N445MA · Swrngn SA227ACSDR WTAA960038Torque Ind · malfunctionedSFO - NR 2 ENGINE FAILED TO ACHIEVE REQUIRED TORQUE ON TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. RIGHT ENGINE APPEARED TO BYPASS FUEL DURING TAKEOFF ROLL. MAINTENANCE DEFERRED TTL SYSTEM PER MEL 76-2. ENGINE OPERATIONS REPORTED NORMAL DURING GROUND RFeb 19, 1996 · N425UE · Bag JETSTM3101SDR WTAA960036Tq Signal Cond · failedLAX - LEFT ENGINE TORQUE INDICATION FLUCTUATION AND AIRCRAFT YAW TENDENCY REPORTED DURING CLIMB-OUT. CREW ACCOMPLISHED IN FLIGHT SHUTDOWN OF LEFT ENGINE AND RETURNED TO STATION WITHOUT INCIDENT. MAINTENANCE INSPECTED ENGINE AND INDICATING SYSTEM. DETERMINEDFeb 16, 1996 · N420UE · Bag JETSTM3101SDR WTAA960033Tq Signal Cond · out of adjustSFO - NR 2 ENGINE FAILED TO ACHIEVE REQUIRED TORQUE ON TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE RECALIBRATED TORQUE INDICATION SYSTEM. ENGINE OPERATIONS NORMAL DURING GROUND RUN. AIRCRAFT RETURNED TO SERVICE. (M)Feb 12, 1996 · N425UE · Bag JETSTM3101SDR 96ZZZX1759Connector · looseBIS - CREW REPORTED RIGHT ENGINE LOST POWER AND TORQUE FELL TO ZERO ON TAKEOFF ROLL. MAINTENANCE CLEANED AND RESECURED CANNON PLUG ON RIGHT SIGNAL CONDITION UNIT. SYSTEM OPS CHECK GOOD. (X)Feb 12, 1996 · N299UX · Emb EMB120ERSDR 96ZZZX972Fitting · not weldedFOUND LOOSE TORQUE SENSING FITTING WHILE PERFORMING ANNUAL INSPECTION. CLOSE INSPECTION OF TUBE ASSY SHOWED FLARED FITTING NOT WELDED TO TUBE ASSY. TUBE ASSY INSTALLED IAW P & W SB NR 14185.Feb 7, 1996 · N263AL · Pilats PC12SDR VTZA96071Tq Indication · malfunctionedFLT NR 6387 - IAD-SYR - DURING CRUISE, RETURNED TO IAD DUE TO THE RIGHT TORQUE WAS AT 100 PERCENT AND THE LEFT TORQUE WAS AT 40 PERCENT. THE AIRCRAFT WAS STABLE WITH NO YAWING MOTION. AIRCRAFT RETURNED TO IAD WITH NO FURTHER INCIDENTS. MAINTENANCE PERFORMEDFeb 4, 1996 · N487UE · Bag JETSTM3201SDR MALA964850Tsc Bridge · malfunctionedFLT 3297 - AFTER DEPARTURE FROM MSP, CREW NOTED A FLUCTUATION IN THE LT ENGINE TORQUE INDICATION. THEY ELECTED TO RETURN TO MSP AND THE ACFT LANDED WITHOUT INCIDENT. MAINTENANCE PERSONNEL CHANGED FROM NR 1 TO NR 2 TSC BRIDGE AND CLEANED THE LT TORQUE RING CJan 31, 1996 · N426MA · Swrngn SA227ACSDR COMA9630026Tq Indication · malfunctionedTHE RT ENGINE TORQUE INDICATOR WENT FULL DEFLECTION DURING TAKEOFF. COULD NOT DUPLICATE DISCREPANCY DURING MAINTENANCE RUNS AND ACFT RETURNED TO SERVICE.Jan 29, 1996 · N358CA · Saab SF340ASDR HEEA966539Indicator · defectivePOINTER GOING ALL OVER WITH VOLTAGE ALSO MAKES CLICKING SOUND. POINTS AT FLOOR WHEN OFF. POINTER DOES NOT SPIN. READS NO TORQUE.Jan 26, 1996 · N6097Z · Snias AS350B2SDR HEEA966537Transducer · defective#2 ENGINE TORQUE READS INTERMITTENT. TRANSDUCER DEFECTIVEJan 26, 1996 · N117BK · Bolkms BK117B1SDR HEEA966495Indicator · defective#2 NEEDLE INTERMITTENTLY STICKS AT 0 AND 38%.Jan 19, 1996 · N3893P · Bell 412SDR P5CA9600170Mount Plate · crackedFOUND NR 4 TT2 SENSOR MOUNT PLATES CRACKED. PLATES REPLACED ND SENSOR, REINSTALLED AS PER MM 73-21-04. LEAK CHECK SATISFACTORY.Jan 18, 1996 · N853FT · Boeing 747122SDR 96ZZZX1588Transducer · defectiveTRANSDUCER UNIT WILL NOT MAINTAIN ADJUSTMENT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jan 18, 1996 · N8970N · Cessna 441SDR RAIA960129Tq Signal Cond · failedSTL - FLT 7072 - LEFT ENGINE ONLY MADE 80 PERCENT TORQUE. MAINTENANCE REPLACED LEFT TORQUE SIGNAL CONDITIONER, GROUND RUNS GOOD. (X)Jan 17, 1996 · N429AM · Bag JETSTM3201SDR WTAA960011Tq Indicator · failedFAT - LEFT ENGINE TORQUE INDICATION FAILED ON TAKEOFF ROLL PRIOR TO V1. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE REPLACED LEFT TORQUE INDICATOR. ENGINE INDICATIONS NORMAL DURING GROUND RUN. AIRCRAFT RETURNED TO SERVICE. (M)Jan 16, 1996 · N278UE · Emb EMB120RTSDR WTAA960018Connector · dirtyACV - LEFT ENGINE TORQUE AND EGT INDICATION DROPPED WITH ENGINE SURGE DURING TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE CLEANED CANNON PLUG AT LEFT ENGINE TORQUE RING CABLE ASSEMBLY. LEFT ENGINE OPERATIONAL CHECK NORMAL DURING GROUND RUN. Jan 13, 1996 · N422UE · Bag JETSTM3101SDR HEEA966394Indicator · reads lowTORQUE IND. READS LOW IN UPPER RANGE.Jan 10, 1996 · N6097Z · Snias AS350B2SDR COMA9620002Tq Sig Cond · failedRIGHT ENGINE DID NOT ACHIEVE CHARTED TAKEOFF POWER. SWAPPED TORQUE SIGNAL CONDITIONER TO SPARE BRIDGE. ENGINE PERFORMANCE SATISFACTORY.Jan 9, 1996 · N704C · Swrngn SA227ACSDR CA960123010Torque Probe · faulty(CAN)ON DEPARTURE #2 ENGINE HAD AN UNCOMMANDED AUTOFEATHER. CREW SHUTDOWN THE ENGINE AND RETURNED TO BASE. MAINTENANCE REPLACED THE TORQUE PROBE. ENGINE RUN AND PROP CHECKS CARRIED OUT SERVICEABLE. AIRCRAF T RETURNED TO SERVICE.Jan 9, 1996 · Dhav DHC8301SDR 96ZZZX1589Transducer · defectiveTRANSDUCER CAUSES GAUGE TO DROP TO ZERO. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jan 9, 1996 · N8970N · Cessna 441SDR CA960126021Indicator · sticking(CAN)INDICATOR SLUGGISH RESPONSE AND NEEDLE STICKS.Jan 3, 1996 · Hughes 369DSDR HEEA966335Torquemeter · leakingENGINE REMOVED DUE TO TORQUE METER LEAKING.Jan 2, 1996 · N7170D · Bolkms BO105SSDR 96ZZZX1582Indicator · inoperativeINDICATOR UNIT INOPERATIVE ON INSTALL. NR 1 INDICATOR NEEDLE STUCK. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Dec 26, 1995 · N30SV · Bell 222SDR WTAA950325Tq Cond Unit · malfunctionedSMF - CREW REPORTED AUTOFEATHER WARNING DURING TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. SYSTEM WAS ARMED AND TESTED NORMAL EXCEPT GREEN AUTOFEATHER LIGHT DID NOT ILLUMINATE. AIRCRAFT WAS FERRIED TO SFO AND MAINTENANCE REPLACED RIGHT ENGINE TORQUE SIGNDec 24, 1995 · N280UE · Emb EMB120RTSDR RAIA951227Transducer · failedFAT - FLT 4732 - LEFT ENGINE TORQUE DROPPED TO 25 PERCENT. MAINTENANCE REPLACED LEFT DELTA P/P TRANSDUCER. GROUND RUNS REVEALED NORMAL OPERATION. (X)Dec 24, 1995 · N971JX · Bag JETSTM3201SDR PCAA9500256Sig Cond Unit · failedLGA - UPON CLIMB-OUT, NR 1 ENGINE EXPERIENCED AN UNSCHEDULED FEATHERING OF THE PROPELLER. MAXIMUM ENGINE TORQUE APPROXIMATELY 109 PERCENT FOR 5 SECONDS. CREW SHUT DOWN NR 1 ENGINE AND RETURNED TO THE FIELD. REMOVED AND REPLACED NR 1 TSCU AND NR 1 ECU. CLEADec 24, 1995 · N825EX · Dhav DHC8102SDR RAIA951221Tq Bridge · inoperativeSTL - 7492 - LEFT TORQUE DROPPED TO ZERO IN FLIGHT. MAINTENANCE CHANGED BRIDGES ON TORQUE RING. (M)Dec 16, 1995 · N435AM · Bag JETSTM3201SDR WTAA950321Tq Sig Cond · malfunctionedLAX - CREW REPORTED, UNABLE TO OBTAIN MORE THAN 65 PERCENT NP AT 80 PERCENT TORQUE ON LEFT ENGINE AND LEFT ENGINE AUTOFEATHER SYSTEM FAILED TO INDICATE ARMED, DURING TAKEOFF ROLL. TAKEOFF ABORTED WITHOUT INCIDENT. MAINTENANCE REPLACED RIGHT ENGINE TORQUE SIGDec 15, 1995 · N280UE · Emb EMB120RTSDR RAIA951218Tq Signal Cond · out of adjustJLN - FLT NR 7072 - TORQUE WOULD ONLY REACH 95 PERCENT ON TAKEOFF ON RIGHT SIDE. MAINTENANCE ADJUSTED RIGHT TORQUE SIGNAL CONDITIONER. GROUND RUNS CHECK GOOD. (M)Dec 13, 1995 · N422AM · Bag JETSTM3201SDR SWIA95691Tq Indicator · failedRT ENGINE LOST TORQUE APPROXIMATELY 20 PERCENT (WILL NOT MAKE TARGET TORQUE). CHECKED RT ENGINE TORQUE CALS, CHECKED GOOD. RAN RT ENGINE TO TAKEOFF TORQUE. ONLY MADE 82 PERCENT AT 650 DEGREES. REMOVED AND REPLACED RT TORQUE INDICATOR. RAN ENGINE TO TAKEOFFDec 8, 1995 · N2720B · Swrngn SA227ACSDR GMCR95008Indicator · defectiveON TAKEOFF ROLL, PILOT NOTED LOW HP INDICATION ON RT ENGINE. ABORTED TAKEOFF. REPLACED TORQUE INDICATOR, OPS CHECK NORMAL. (X)Dec 8, 1995 · N5122 · Cvac 440SDR HEEA956167Transmitter · defectiveNEEDLE HAS AN INTERMITTENT INDICATION.Dec 5, 1995 · N624MB · Bolkms BO105SSDR RAIA951203Tq Signal Cond · out of adjustSTL - FLT 7 - RIGHT ENGINE ONLY ACHIEVED 95 PERCENT TORQUE. MAINTENANCE SWAPPED TORQUE SIGNAL CONDITIONER BRIDGE. ADJUSTED SIGNAL CONDITIONER PER GARRETT DSC SETTINGS. GROUND PERFORMANCE RUN CHECK GOOD. (M)Dec 4, 1995 · N428AM · Bag JETSTM3201SDR RAIA951202Tq Signal Cond · out of adjustSTL - FLT NR 7059 - RIGHT ENGINE ONLY ACHIEVED 95 PERCENT TORQUE. MAINTENANCE ADJUSTED RIGHT ENG TORQUE SIGNAL CONDITIONER AS PER GARRETT DSC SETTINGS. GROUND PERFORMANCE RUNS CHECK GOOD. (M)Dec 4, 1995 · N428AM · Bag JETSTM3201SDR SWIA95688Ground Block · not groundedAFTER DEPARTURE, ON CLIMB OUT, AFTER SETTING CLIMB DOWN, AIRCRAFT SURGED AND RT ENGINE TORQUE SETTING WENT TO 127 PERCENT. WHILE REDUCING POWER, PROP WAS AT 127 PERCENT, TORQUE MOMENTARILY 1 SEC OR LESS. AFTER INSPECTION, FOUND CASE GROUND BLOCK NOT GROUNDEDDec 3, 1995 · N226SW · Emb EMB120ERSDR MWEA95441Epr Indicator · malfunctionedMKE - PILOT REPORTS, WHEN ADDING POWER FOR TAKEOFF THE RIGHT ENGINE EPR DID NOT RESPOND AND ONLY OBTAINED 1.6 EPR. ABORTED TAKEOFF AT APPROX 40 KNOTS. MAINTENANCE REMOVED AND REPLACED RIGHT ENGINE EPR INDICATOR, PERFORMED 5 TAKEOFF POWER CHECKS. ALL PARAMETDec 1, 1995 · N300ME · Doug DC915SDR CA960122020Connector · contaminated(CAN)ON CLIMB, R/H ENGINE HAD ENGINE PARAMETERS FLUCTUATE FOR A FEW SECONDS. MAINTENANCE CLEANED P2 SENSOR CONNECTOR. ENGINE GROUND RUN, NO FURTHER FAULT REPORTED.Nov 22, 1995 · Lear 35LEARSDR SIMA953221T1.8 Sensor · shortedDFW - FLT 3599 - DURING TAKEOFF, NR 1 ENGINE TORQUE INDICATION SURGED. AIRCRAFT RETURNED TO DFW. REMOVED AND INSPECTED T1.8 SENSOR. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. PART TOTAL CYCLES, 391.0. (X)Nov 18, 1995 · N440AM · Aerosp ATR72212SDR 96ZZZX126Sensor · failedDTW - AIRCRAFT WAS ON DESCENT TO LAND AT DTW WHEN ECU FAIL MESSAGE APPEARED. THE PILOT RESET THE ECU AND IT STAYED ON LINE FOR APPROXIMATELY 4 MINUTES, THEN FAILED AGAIN. THE AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. THE AIRCRAFT WAS FERRIED TO HOT FOR MAINNov 15, 1995 · N340LS · Dorner DO328100SDR WTAA950306Torque Ring · false indicationSFO - LEFT ENGINE FAILS TO OBTAIN REQUIRED TAKEOFF TORQUE. SWITCHED TORQUE SIGNAL CONDITIONER TO BRIDGE NR 2 AND ADJUSTED. ENGINE OPERATING PARAMETERS REPORTED NORMAL DURING ENGINE GROUND RUN. AIRCRAFT RETURNED TO SERVICE. (M)Nov 13, 1995 · N428UE · Bag JETSTM3101
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