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 HEEA0014698Indicator · reads lowDUAL TORQUE'S NR 1 NEEDLE READS LOW. TIME SINCE REPAIR 42:25 HOURS.Jun 10, 1998 · N22347 · Bell 412SDR C2XA98BT043Sensor · intermittentEWR - CRE REPORTED RIGHT ENGINE TORQUE GAUGE WENT TO ZERO AT APPROXIMATELY 400 FT AFTER TAKEOFF. APPROXIMATELY 40 PERCENT AND SHUTDOWN ENGINE ON RETURN FOR LANDING. MAINTENANCE REMOVED AND REPLACED AN INTERMITTENT TORQUE SENSOR ON THE RIGHT ENGINE, OPERATIONJun 10, 1998 · N26826 · Aerosp ATR42320SDR HEEA0014645Torquemeter · inoperativeTORQUEMETER NR 2 NEEDLE STAYS AT ZERO WHILE RUNNING.Jun 8, 1998 · N724MB · Bolkms BO105SSDR HEEA0014634Transducer · fluctuatesTORQUE TRANSDUCER FLUCTUATES.Jun 8, 1998 · N911RZ · Bolkms BK117A4SDR HEEA0014626Indicator · sticksTORQUE INDICATOR'S NR 1 NEEDLE STICKS AT ZERO.Jun 8, 1998 · N5759N · Bell 412SDR HEEA0014575Transducer · malfunctionedTORQUE DROPPED OFF 20 PERCENT, THEN WENT HIGH BY 20 PERCENT. UNIT WOULD NOT REMAIN CALIBRATED.Jun 4, 1998 · N136AE · Bolkms BK117B2SDR HEEA0014507Torquemeter · sticksTORQUEMETER NR 2 NEEDLE STICKING IN-FLIGHT.Jun 4, 1998 · N724MB · Bolkms BO105SSDR HEEA0014504Indicator · sticksTORQUE NR 1 NEEDLE STICKS AT 35 PERCENT INDICATION.Jun 4, 1998 · N108X · Bell 412SDR HEEA0014502Transmitter · failedTORQUEMETER READS LOW, OUT OF TOLERANCE.Jun 4, 1998 · N1079U · Bell 212SDR HEEA0014500Transmitter · read highTORQUE READS HIGH OUT OF TOLERANCE.Jun 4, 1998 · N3131S · Bell 212SDR HEEA0014498Torquemeter · fluctuatesTORQUE GAUGE FLUCTUATING.Jun 4, 1998 · N979BH · Bell 206L3SDR HEEA0014476Lens · crackedTORQUEMETER LENS CRACKED.Jun 2, 1998 · N408PH · Bell 407SDR HEEA0014451Indicator · inoperativeENGINE TORQUE NR 2 NEEDLE DOES NOT OPERATE.Jun 2, 1998 · N22347 · Bell 412SDR HEEA0014449Indicator · shortedNR 2 NEEDLE PEGS AND BLOWS BREAKER.Jun 2, 1998 · N3131S · Bell 212SDR VTZA98202Connector · contaminatedFLT 6193 - IAD-JFK - DURING TAKEOFF, EXPERIENCED A TORQUE ROLL BACK ON THE LEFT ENGINE DURING TAKEOFF ROLL. FLIGHT CREW ABORTED THE TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE CONTROL WAS NOTIFIED AND MAINTENANCE WAS DISPATCHED WHERE UPON TROUBLESHOOTING. May 27, 1998 · N471UE · Bag JETSTM3201SDR RAIA980510Tq Signal Cond · failedFLT 7468 - STL - LEFT ENGINE REACHED TEMPERATURE LIMIT BEFORE TARGET TORQUE WAS ACHIEVED. MAINTENANCE REPLACED LEFT ENGINE TORQUE SIGNAL CONDITIONER. (M)May 19, 1998 · N435AM · Bag JETSTM3201SDR HEEA0014222Indicator · failedTORQUE GAUGE INOPERATIVE IN FLIGHT. PEGGED TO HIGH SIDE ONCE AND WENT TO ZERO IN FLIGHTMay 19, 1998 · N141MA · Bell 407SDR 98ZZZX2101Torquemeter · failedAIRCRAFT FAILED POWER CHECK. INVESTIGATION REVEALED TORQUEMETER READING 6 PERCENT HIGH. TORQUEMETER WAS REPLACED. REF: SN 3721. CONTROL NR 98-5-7.May 12, 1998 · N54AG · Bell OH58ASDR CA980603010Tscu · failed(CAN) ON TAKEOFF ROLL , NR 2 ENGINE TORQUE INDICATION FAILED. NR 2 TORQUE SIGNAL CONDITIONING UNIT (TSCU) WAS REPLACED AND THE SYSTEM TESTED SERVICEABLE. PART TC: 20,787.May 10, 1998 · Dhav DHC8102SDR HEEA0014126Indicator · erraticTORQUE INDICATOR READING VERY ERRATIC.May 7, 1998 · N4000L · Snias AS350B2SDR HEEA0014077Torquemeter · failedTORQUEMETER NEEDLE DOESN'T RETURN TO ZERO.Apr 29, 1998 · N20898 · Bell 206L1SDR CA980504009Sensor · malfunctioned(CAN) DURING TAKEOFF ROLL, THE NR ENGINE TORQUE GAUGE FLUCTUATED UP AND DOWN RAPIDLY. AIRCRAFT RETURNED TO THE GATE. THE NR 2 TORQUE PROBE WAS REPLACED AND THE GAP ADJUSTED PER THE MAINTENANCE MANUAL. THE ENGINE WAS GROUND RUN SERVICEABLE AND THE AIRCRAFT REApr 26, 1998 · Dhav DHC8102SDR HEEA0013962Indicator · failedNR1 ENGINE SIDE POPS CIRCUIT BREAKER.Apr 16, 1998 · N3911L · Bell 412SDR QXEA9800523Tscu · malfunctionAUTOFEATHER SYSTEM DOES NOT ARM. ABORTED TAKEOFF AND RETURNED TO THE GATE. SYSTEM ARMED AND TESTED NORMALLY ON THE GROUND DURING TEST MODE. REPLACED POWER LEVER SWITCHES 6121-S12 AND 6121-S13. ALSO, REPLACED NR 1 AND NR 2 TORQUE SIGNAL CONDITIONERS (TSEU).Apr 12, 1998 · N813PH · Dhav DHC8102SDR HEEA0013847Indicator · failedNR 2 NEEDLE WILL NOT INDICATE.Apr 3, 1998 · N102PH · Bell 212SDR C2XA98CL034Torque Gauge · intermittentCLE - FLT 3263 - CREW REPORTED THE RIGHT HAND ENGINE TORQUE GAUGE FLUCTUATES FROM 5,000 TO ZERO IN FLIGHT. AIRCRAFT RETURNED TO FIELD WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE RIGHT HAND ENGINE TORQUE GAUGE IAW B1900D MM 77-10-00, OPERATApr 3, 1998 · N47542 · Beech 1900DSDR HEEA0013684Indicator · failedENGINE INPUT BLOWS CIRCUIT BREAKER.Apr 2, 1998 · N3893N · Bell 412SDR HEEA0013681Indicator · stuckINDICATOR NEEDLE STUCK AT ZERO.Apr 2, 1998 · N1079U · Bell 212SDR CA980407003Indicator · sticking(CAN) PILOT ABORTED TAKEOFF DUE TO LEFT ENGINE TORQUE READING ERRATIC. INDICATOR REPLACED AND SYSTEM CALIBRATED.Mar 30, 1998 · Piper PA31TSDR HEEA0013562Torquemeter · malfunctionSLUGGISH OPERATION AND FLUID IN GLASS.Mar 26, 1998 · N22751 · Bell 206B3SDR HEEA0013550Transducer · erraticPRESSURE TRANSDUCER ERRATIC INDICATION.Mar 26, 1998 · N911RZ · Bolkms BK117A4SDR REXA98080Connector · dirtyLEFT TORQUE GAUGE SPIKED WHILE TAXIING. CLEANED TORQUE BRIDGE CANNON PLUG GROUND. OPS CHECK GOOD. (M)Mar 25, 1998 · N315PX · Bag JETSTM3101SDR REXA98079Tq Signal Cond · out of adjustRIGHT TORQUE GAUGE SPIKES WITH NO POWER ADVANCEMENT. CALIBRATED TORQUE SIGNAL CONDITIONER. PERFORMED GROUND RUNS, NO DEFECT NOTED. (M)Mar 24, 1998 · N315PX · Bag JETSTM3101SDR 98ZZZX1813Trim Box · defectiveTORQUE TRIM BOX TRIGGERING FAULT CODES: NCFALL - 13 AND AIRCRAFT FLT - 11. RESISTANCES FLUCTUATE WHEN CANNON PLUG IS WIGGLED. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Mar 22, 1998 · N901CF · Doug MD900SDR HEEA0013504Torquemeter · failedTORQUE GAUGE FOR ENGINE FILLS UP WITH OIL WHEN ENGINE IS RUNNING. SEE OIL IN SIGHT GLASS FACE AND LEAKS ON PANEL.Mar 19, 1998 · N8588X · Bell 206L3SDR HEEA0013481Torquemeter · sticksTORQUEMETER NEEDLE STICKS AT 6%.Mar 19, 1998 · N31801 · Bell 206L3SDR HEEA0013480Torque Gauge · failedTORQUE GAUGE EXCESSIVE FRICTION ERROR.Mar 19, 1998 · N2285B · Bell 206B3SDR HEEA0013462Transmitter · erraticERRATIC TORQUE FLUCTUATION ON NR1 ENGINE.Mar 19, 1998 · N141PH · Bell 412SDR REXA98072Connector · malfucntionedRIGHT TORQUE FLUX ON TAKEOFF. SWAPPED CANNON PLUG ON RIGHT ENGINE TORQUE SIGNAL CONDITIONER FROM BRIDGE 1 TO BRIDGE 2. GROUND RUN AND OPERATIONAL CHECK GOOD. (M)Mar 18, 1998 · N333PX · Bag JETSTM3101SDR COMA9810070Tq Signal Cond · malfunctionAUTO FEATHER SYSTEM DOES NOT TEST. REPLACED THE LEFT ENGINE TORQUE SIGNAL CONDITIONER.Mar 18, 1998 · N161CA · Emb EMB120RTSDR WTAA980042Tq Indication · droppedFAT - LEFT ENGINE TORQUE DROPPED TO 80 PERCENT ON TAKEOFF. TAKEOFF ABORTED. MAINTENANCE PERFORMED TWO POINT RUN OF LEFT AND RIGHT ENGINES. UNABLE TO DUPLICATE DISCREPANCY. AIRCRAFT RETURNED TO SERVICE. (M)Mar 4, 1998 · N431UE · Bag JETSTM3101SDR HEEA0013286Indicator · defectiveCURSER READS HIGHER THAN NR1 AND NR2 NEEDLE.Mar 4, 1998 · N1202T · Bell 412SDR HEEA0013285Indicator · sticksNR1 TORQUE NEEDLE STICKS INTERMITTENTLY.Mar 4, 1998 · N3893L · Bell 412SDR VTZA98096Torque Gauge · failedIAD/MKT - FLT 6570 - DURING TAKEOFF AT 1710 HRS ON 2-26-98, AIRCRAFT ABORTED TAKEOFF DUE TO LT TORQUE GAUGE FAILED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED TORQUE GAUGE. AIRCRAFT WAS GROUND RUN, OPSFeb 26, 1998 · N497UE · Bag JETSTM3201SDR MALA976015Sensor · failedAFTER TAKEOFF, THE LEFT ENGINE TEMP STARTED TO FLUCTUATE, FOLLOWED BY THE ENGINE RPM AND TORQUE; LEFT IGNITION LIGHT ALSO ILLUMINATED. AIRCRAFT RETURNED TO DTW. MAINTENANCE REPLACED THE LEFT NP SPEED SENSOR AND NO1 TORQUE SENSOR, ALL CHECKS GOOD.Feb 26, 1998 · N421XJ · Saab 340BSDR C2XA98CL017Signal Cond Unit · failedCLE - FLT 3079 - CREW REPORTED THE AUTOFEATHER SYSTEM WOULD NOT TEST, THE TORQUE WOULD RISE BUT NO ARM LIGHT OR NP CHANGE WAS NOTED. AIRCRAFT RETURNED TO GATE. MAINTENANCE REMOVED AND REPLACED THE RIGHT ENGINE TORQUE SIGNAL CONDITION UNIT IAW EMB-120-MM 77-1Feb 24, 1998 · N15732 · Emb EMB120RTSDR SABA980015Ttl Valve · failedCLT - FLT 5173 - ON FLIGHT FROM CLT TO OAJ, PILOT ABORTED TAKEOFF DUE TO RIGHT ENGINE TORQUE STARTED DECREASING AND TEMPERATURE WAS INCREASING. NO EMERGENCY WAS DECLARED. AIRCRAFT RETURNED TO PARKING RAMP. MAINTENANCE FOUND THE TTL BYPASS VALVE BAD. REMOVEFeb 23, 1998 · N962AE · Bag JETSTM3201SDR VTZA98073Tq Signal Cond · failedFLT 6261 - IAD-EWR - AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO RT ENGINE EGT FLUCTUATION. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND CLEAN CANNON PLUG AND REMOVED AND REPLACED TORQUE SIGNAL CONDITIONER, OPS CHECK OK. AIRFeb 17, 1998 · N494UE · Bag JETSTM3201SDR WTAA980032Tq Indication · malfunctionedSNA - LEFT TORQUE INDICATION FLUCTUATION REPORTED. AIRCRAFT RETURNED TO GATE. MAINTENANCE COULD NOT DUPLICATE DISCREPANCY. PERFORMED HIGH POWER GROUND RUN, NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE. (X)Feb 14, 1998 · N422UE · Bag JETSTM3101SDR UF6A980203Torque Shaft · wornORD - FLT 5701 - NR 1 NH EXCEEDED TAKEOFF LIMIT (APPROX 103 PERCENT). MAINTENANCE REMOVED AND REPLACED THE NR 1 TORQUE SHAFT ASSEMBLY. RERIGGED ENGINE AND PERFORMED OPS CHECK. SYSTEM OPS CHECKED GOOD. (M)Feb 10, 1998 · N852AW · Bag ATP
Back to JASC 7712