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 RAIA990911Tach Generator · failedFLT 7456 - STL - RIGHT RPM FLUCTUATES. MAINTENANCE REPLACED TACH GENERATOR FOR RIGHT ENGINE. (M)Sep 13, 1999 · N342TE · Bag JETSTM3201SDR RAIA990910Tach Generator · failedFLT 7444 - STL - RIGHT ENGINE RPM GAUGE INOPERATIVE. MAINTENANCE REPLACED TACH GENERATOR FOR RIGHT ENGINE. (M)Sep 11, 1999 · N343TE · Bag JETSTM3201SDR 99ZZZX3894Tach Generator · damagedCANNON PLUG BENT AND RIVETS TORN OUT OF HOUSING. REMOVED AND REPLACED.Sep 8, 1999 · N500DC · Hughes 369DSDR HEEA064287Indicator · malfunctionedDROPPED TO ZERO IN-FLIGHT. REFERENCE: DMR NR 686242.Sep 7, 1999 · N721PH · Bell 407SDR SWIA971570Tq Sig Cond · failedLEFT ENGINE INADVERTENT AUTO FEATHER AFTER TAKEOFF. RETURNED TO FIELD. REMOVED AND REPLACED LEFT TORQUE SIGNAL CONDITIONER. ALSO, REMOVED AND REPLACED LEFT TORQUE PROBE PER MM 77-11-2. OPS CHECKS GOOD PER MM 71-00-00. NO LEAKS NOTED.Sep 6, 1999 · N204SW · Emb EMB120ERSDR SWIA971565Tq Probe · failedDURING FLIGHT, RIGHT TORQUE FLUCTUATES FROM 64 PERCENTS DOWN TO 0 PERCENTS (ANALOG AND DIGITAL). RETURNED TO SFO. REPLACED RIGHT ENGINE TORQUE PROBE. OPS CHECKED GOOD ON ENGINE RUN.Sep 5, 1999 · N229SW · Emb EMB120ERSDR MALA976559Tq Ind · malfunctionedRIGHT TORQUE GAUGE FLUCTUATES IN CLIMB 2-3 PERCENT, NOTED 84 PERCENT POWER SET, ALL OTHER INDICATIONS NORMAL AND CONSTANT. AIRCRAFT RETURNED TO DTW. MAINTENANCE GROUND RAN AIRCRAFT, ALL SYSTEMS CHECK GOOD. FOUND 2-3 PERCENT TORQUE FLUCTUATIONS IN LIMITS PERAug 31, 1999 · N423XJ · Saab 340BSDR 99ZZZX3552Indicator · fluctuatesINSTALLED NEWLY OVERHAULED UNIT, FLUCTUATED 4-8 PSI. NOT WITHIN LIMITS. REMOVED AND REPLACED.Aug 31, 1999 · N8330P · Hughes 369ESDR C2XA99CL106Indicator · failedCLE - FLT 3129 - THE CREW REPORTED THE RIGHT TQ DID NOT INCREASE OR RISE DURING TAKEOFF, IT WAS STUCK AT 300. THE AIRCRAFT RETURNED TO THE GATE WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE RT TQ INDICATOR IAW B1900D MM 77-10-00 OPERATIONAL Aug 26, 1999 · N53545 · Beech 1900DSDR RAIA990832Tq Signal Cond · failedRIGHT ENGINE WOULD NOT MAKE TARGET TORQUE. MAINTENANCE REPLACED TORQUE SIGNAL CONDITIONER. (M)Aug 25, 1999 · N342TE · Bag JETSTM3201SDR 2000ZZZX796Transducer · leakingTRANSDUCER LEAKING AND HAS INACCURATE READINGS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Aug 21, 1999 · N117BK · Bolkms BK117B1SDR MASA99143Torque Gauge · failedFLT 5977 - PIT-ART - AFTER DEPARTURE FROM PIT, THE CAPTAIN REPORTED THAT THE NR 2 ENGINE TORQUE AND FUEL FLOW WERE FLUCTUATING IN FLIGHT. THE AIRCRAFT DIVERTED TO DUJ WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE TORQUE GAUGE AND THEAug 19, 1999 · N65YV · Beech 1900DSDR 99ZZZX3560Indicator · fluctuatesTORQUE INDICATOR FLUCTUATES. REMOVED AND REPLACED.Aug 19, 1999 · N8530F · Bell 212SDR HEEA063393Torquemeter · friction errorTORQUEMETER HAS EXCESSIVE FRICTION ERROR, GLASS FOGGY AND NEEDLE STICKS.Aug 13, 1999 · N6251Y · Bell 206L3SDR HEEA063392Indicator · stickingNEEDLE STICKS, GLASS FOGGY AND CRACKED.Aug 13, 1999 · N5019F · Bell 206L1SDR HEEA063358Indicator · inoperativeTORQUE INDICATOR'S LIGHTS INOPERATIVE.Aug 13, 1999 · N3893S · Bell 412SDR HEEA063074Transmitter · stuckNEEDLE STUCK ON 50 PERCENT ON BOTH THE PILOT AND COPILOT TORQUE GAUGES.Aug 13, 1999SDR HEEA063466Indicator · stickingTORQUE INDICATOR'S NR 2 NEEDLE STICKS AT 35-40 PERCENT WHEN IT SHOULD INDICATE 15-20 PERCENT.Aug 12, 1999 · N137AE · Bolkms BO105SSDR HEEA063352Indicator · crackedTORQUEMETER HAD CRACKED GLASS AND FADED RED LINE.Aug 12, 1999 · N10814 · Bell 206L1SDR HEEA063063Indicator · sticksDUAL TORQUE INDICATOR STICKS.Aug 12, 1999 · N1546G · Skrsky S76ASDR HEEA063303Indicator · failedTORQUE INDICATOR TRIPS BREAKER.Aug 10, 1999 · N2148K · Bell 412SDR HEEA063302Indicator · failedTORQUE INDICATOR TRIPS CIRCUIT BREAKER.Aug 10, 1999 · N3893N · Bell 412SDR 2000ZZZX798Transducer · inoperativeTRANSDUCER INOPER ATIVE. CAUSES NR 2 TORQUE NEEDLE TO READ 20 PERCENT HIGH. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Aug 9, 1999 · N625MB · Bolkms BK117A3SDR 2000ZZZX793Transducer · inoperativeTRANSDUCER INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Aug 4, 1999 · N62LF · Bolkms BK117B1SDR HEEA063425Indicator · reads highTORQUE INDICATOR READS HIGH.Aug 2, 1999 · N6095S · Snias AS350B2SDR 99ZZZX3289Indicator · fluctuatesTORQUE GAUGE FLUCTUATES 4-8 PSI. REMOVED AND REPLACED.Jul 31, 1999 · N8330P · Hughes 369ESDR HEEA062986Indicator · failedTORQUE INDICATOR WILL NOT READ AT ALL.Jul 23, 1999 · N417PH · Bell 407SDR HEEA063011Indicator · reads lowTORQUE INDICATOR READS LOW AND STICKS HIGH, INTERMITTENTLLY.Jul 22, 1999 · N4000L · Snias AS350B2SDR VTZA990247Tq Sig Cond · out of adjustFLT 7654 - IAD-PHL - CREW ABORTED TAKEOFF DUE TO BOTH ENGINES TEMPTED OUT BEFORE TARGET TORQUE. AIRCRAFT LANDED AND RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND ADJUSTED LEFT AND RT TORQUE SIGNAL CONDITIONS. OPS CHECK OK. AIRCRAFT WJul 19, 1999 · N474UE · Bag JETSTM3201SDR VTZA990229Tq Indication · malfunctionedIAD/PIT - FLT 7387 - DURING TAKEOFF, AIRCRAFT ABORTED TAKEOFF DUE TO RT ENGINE NOT MAKING TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND SWITCHED RT ENGINE TORQUE BRIDGE FROM NR 1 TO NR 2 AND GROUND RAN AIRCRAFT. OPS CJul 18, 1999 · N323UE · Jetair JETSTM4101SDR CA990728017Torque Sensor · failed(CAN) THE FAILURE WAS LIMITED TO THE DIRECT DRIVE GEAR STACK ON THE TORQUE SENSOR. THIS GEAR DRIVES THE FUEL PUMP AND FUEL CONTROL THE FAILURE OF WHICH SHUT DOWN THE ENGINE DUE TO LOSS OF FUEL PRESSURE. THE SHAFT HAD BROKEN IN THE THREAD AREA UNDER THE RETAIJul 14, 1999 · Mtsbsi MU2B36SDR HEEA062918Indicator · malfunctionedNR 1 AND NR 2 NEEDLES WOULD NOT CORRECT FOR THE ZERO SCALE. SLOPE ADJUST WAS WORKING NORMALLY. LOW READINGS STAYED AT OR ABOVE 26 PERCENT.Jul 13, 1999 · N136AE · Bolkms BK117B2SDR HEEA062753Indicator · reads highTORQUE INDICATOR GAUGE READS HIGH THEN STUCK AT 90 PERCENT. REFERENCE: RMA NR R019905.Jul 8, 1999 · N4000L · Snias AS350B2SDR HEEA062752Indicator · reads highTORQUE INDICATOR READS HIGH AND IS STICKING. REFERENCE: MA NR R019826.Jul 8, 1999 · N4000L · Snias AS350B2SDR CA990715044Tq Sig Cond · failed(CAN) TORQUE SIGNAL CONDITIONER FAILED, THIS CAUSED ATPCS TO FEATHER THE PROPELLER. IN-FLIGHT SHUTDOWN AND RESTART REMEDIED THE PROBLEM UNTIL RTU MAINTENANCE FACILITY.Jul 8, 1999 · Aerosp ATR42300SDR VTZA990196Signal Cond · malfunctionedIAD/PIT - FLT 7385 - DURING TAKEOFF AT 1340 HOURS, AIRCRAFT ABORTED TAKEOFF DUE TO RT ENGINE FAILING TO MAKE SCHEDULED TORQUE. MAINTENANCE CALIBRATED RT TORQUE SIGNAL CONDITIONER AND GROUND RAN ENGINES. ALL PARAMETERS WITHIN LIMITS. AIRCRAFT WAS RELEASED ANJun 28, 1999 · N474UE · Bag JETSTM3201SDR GLBA99023Transmitter · failedRIGHT ENGINE WOULD NOT MAKE TORQUE WORN O-RING ON BLEED VALVE. REPLACED O-RING AND REPLACED TORQUE TRANSMITTER, WOULD NOT CALIBRATE. (M)Jun 23, 1999 · N96UX · Beech 1900DSDR 99ZZZX3868Transducer · malfunctionedDURING FLIGHT, TQ READS 20 PERCENT AT ITS HIGHEST POINT. WITH AC MASTER ON, THE TQ INDICATOR SPINS CLOCKWISE 2 TIMES, THEN FLICKERS BELOW ZERO. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jun 10, 1999 · N625MB · Bolkms BK117A3SDR VTZA990211Controller · failedIAD/PHI - FLT 7652 - DURING TAXI AT 0700, AIRCRAFT LT ENGINE FLAMED OUT DURING MORNING TTL TEST. AIRCRAFT WAS EVACUATED ON THE RUNWAY. MAINTENANCE REMOVED AND REPLACED LT TTL VALVE AND TTL CONTROLLER. RUN-UP OKAY. AIRCRAFT RELEASED AND RETURNED TO SERVICE.Jun 9, 1999 · N485UE · Bag JETSTM3201SDR UF6A990610Nh Probe · failedORD - FLT 5750 - NR 2 NH WAS ABOVE LIMITS IN CRUISE POWER. MAINTENANCE REMOVED AND REPLACED THE NR 2 ENGINE NR 1 NH PROBE. PERFORMED POWER ASSURANCE RUNS WITH NO DEFECTS NOTED. SYSTEM OPS CHECKED GOOD. (M)Jun 6, 1999 · N851AW · Bag ATPSDR VTZA9990157Ttl Computer · out of adjustIAD/BWI - FLT 7272 - DURING TAKEOFF, AIRCRAFT ABORTED TAKEOFF DUE TO BOTH ENGINES NOT REACHING SCHEDULED TORQUE. MAINTENANCE OPENED DMI 43808. MEL 76-2 FOR LEFT TTL LOW POWER AND DMI 43809, MEL 76-2 FOR RT TTL LOW POWER. MAINTENANCE CLOSED BOTH DMI'S 43809 Jun 2, 1999 · N493UE · Bag JETSTM3201SDR SWIA971506Torque Sensor · failedRIGHT TORQUE DROPPED AND RIGHT PROPELLER AUTO FEATHERED. RETURNED TO LAX. REPLACED TORQUE SIGNAL CONDITIONER AND REPLACED TORQUE SENSOR. PERFORMED OPS CHECK OF TORQUE SYSTEM. OPS CHECK GOOD.Jun 2, 1999 · N294SW · Emb EMB120ERSDR 99ZZZX3769Indicator · malfunctionedNR 2 NEEDLE WANDERS.May 29, 1999 · N135SJ · Urocop EC135P1SDR VTZA990096Ttl · malfunctionedFLT 7207 - IAD-PHF - DURING TAKEOFF, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO RIGHT ENGINE TORQUE DROPPED 15 PERCENT. AIRCRAFT RETURNED TO THE GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND OPENED DMI 43804, MEL 76-2 ON TTL. AIRCRAFT WAS RELEASMay 23, 1999 · N493UE · Bag JETSTM3201SDR VTZA990137Controller · failedIAD/ROA - FLT 7203 - AT 1900 HOURS ON 5-21-99, AIRCRAFT ABORTED TAKEOFF DUE TO LT ENGINE TORQUE ROLLED BACK ON TAKEOFF ROLL. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND OPENED DMI 42397, MEI 76-2. MAINTENANCE CLOSED DMI 423May 21, 1999 · N480UE · Bag JETSTM3201SDR AU990477Connector · contaminated(AUS) RIGHT ENGINE TORQUE SIGNAL CONDITIONER CONNECTOR CONTAMINATED WITH OIL.May 21, 1999 · Dhav DHC8102SDR 99ZZZX3875Transducer · fluctuatedTRANSDUCER UNIT CAUSES TORQUE INDICATOR FLUCTUATION. NEEDLE FLUCTUATES PLUS 4 PERCENT TO MINUS 4 PERCENT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.May 21, 1999 · N117BK · Bolkms BK117B1SDR MALA976480Connector · looseDURING TAKEOFF, LEFT TORQUE INDICATOR WAS ERRATIC, APPROX 60 TO 110 PERCENT. ALL OTHER ENGINE INDICATIONS NORMAL. ACTUAL POWER APPEARED NORMAL, NO SURGING. AIRCRAFT RETURNED TO CVG. MAINTENANCE INSPECTED LEFT ENGINE AND FOUND CANNON PLUG ON PCU LOOSE. CLEMay 20, 1999 · N98XJ · Saab SF340ASDR VTZA990087Filter · dirtyFLT 7234 - ORF-IAD - DURING TAKEOFF, MADE AN UNSCHEDULED LANDING DUE TO RIGHT ENGINE TTL INOPERATIVE. AIRCRAFT RETURNEE TO THE GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND OPENED DMI 45564 MEL 76-2. MAINTENANCE CLOSED DMI 45564 ON 5-20-99 BY CLEMay 19, 1999 · N486UE · Bag JETSTM3201SDR VTZA990080Harness Wire · brokenFLT 7196 - ROA-IAD - DURING TAKEOFF, MADE AN UNSCHEDULED LANDING DUE TO RIGHT ENGINE TTL AND EGT FLUCTUATION. AIRCRAFT RETURNED TO THE GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND OPENED DMI 45562, MEL 76-2. MAINTENANCE CLOSED DMI 45562 BY REPAIMay 14, 1999 · N486UE · Bag JETSTM3201
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