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 HEEA0010346Indicator · sticksDUAL TORQUE NEEDLE HAS STICKY OPERATION THROUGHOUT SEALS.Jun 26, 1997 · N4253S · Skrsky S76ASDR HEEA0010308Torquemeter · reads lowTORQUE METER INDICATIONS 6% LOW AT 100%.Jun 26, 1997 · N2271V · Bell 206BSDR REXA97178Ttl · malfunctionedRETURNED TO RAMP WITH RIGHT ENGINE TORQUE FALLING OFF ON TAKEOFF. DEFERRED TTL. (M)Jun 25, 1997 · N303PX · Bag JETSTM3101SDR HEEA0010235Torquemeter · faultyTORQUE INDICATOR READS LOW OUT OF TOLERANCE AND GLASS OILY.Jun 25, 1997 · N5014Y · Bell 206L1SDR HEEA0010213Indicator · reads highCO PILOTS TORQUE INDICATOR READS 2 TO 3% HIGHER THAN PILOTS SIDE.Jun 25, 1997 · N2148K · Bell 412SDR UF6A970611Tq Indication · lowORD - FLT 5728 - ON TAKEOFF, NR 2 ENGINE TORQUE WAS 15 PERCENT BELOW TORQUE BUG WITH MAX POWER LEVER POSITION. MAINTENANCE INSPECTED, CLEARED EEC, AND RAN BOTH ENGINES. NO DEFECTS NOTED. (M)Jun 24, 1997 · N852AW · Bag ATPSDR REXA97176Ng Gauge · malfunctionedLEFT ENGINE OVERSPED ON TAKEOFF. SWAPPED NG GAUGES PERFORMED GROUND RUNS NO DEFECT NOTED. (M)Jun 22, 1997 · N326PX · Saab SF340ASDR RAIA970615Tq Signal Cond · out of adjustSTL - FLT 7356 - NR 2 ENGINE LOW TORQUE ON TAKEOFF. CALIBRATED TORQUE SIGNAL CONDITIONER. (X)Jun 19, 1997 · N430AM · Bag JETSTM3201SDR PLGA970619ACircuit Breaker · trippedBOS - FLT 4389 - THERE WAS NO TORQUE INDICATION FROM RIGHT ENGINE DURING TAKEOFF ROLL. TAKEOFF WAS ABORTED AND AIRCRAFT RETURNED TO THE GATE. CREW FOUND CIRCUIT BREAKER FOR RIGHT TORQUE INDICATOR OPEN. RESET BREAKED AND INDICATION WAS NORMAL. AIRCRAFT RETUJun 19, 1997 · N361BE · Saab 340BSDR RAIA970614Tq Signal Cond · out of adjustSTL - FLT 7448 - NR 1 ENGINE LOW TORQUE ON TAKEOFF. CALIBRATED TORQUE SIGNAL CONDITIONER. (X)Jun 18, 1997 · N425AM · Bag JETSTM3201SDR REXA97169Tq Signal Cond · out of adjustLEFT ENGINE WILL NOT MAKE TORQUE. ADJUSTED LEFT ENGINE SIGNAL CONDITIONER. (X)Jun 16, 1997 · N311PX · Bag JETSTM3101SDR WTAA970105Ttl System · malfunctionedFAT - AFTER TAKEOFF, RIGHT ENGINE TORQUE TO 70 PERCENT DROP REPORTED. AIRCRAFT RETURNED TO STATION. MAINTENANCE DEFERRED TTL SYSTEM PER MEL 76-2. AIRCRAFT RETURNED TO SERVICE. MAINTENANCE SUBSEQUENTLY CLEARED DEFERRAL BY PERFORMING CONTINUITY CHECK OF RIGHJun 14, 1997 · N401UE · Bag JETSTM3101SDR VNAA9706005Sensor · failedON CLIMBOUT, THE LEFT TORQUE DROPPED TO 40 PERCENT. RETURNED TO THE FIELD WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED THE LEFT NH SENSOR, OPERATIONAL CHECK GOOD.Jun 13, 1997 · N427JS · Dorner DO328100SDR HEEA0010117Indicator · failedWILL TEST, BUT THEN GOES DEAD.Jun 13, 1997 · N447PH · Bell 407SDR REXA97168Tq Signal Cond · out of adjustDID NOT MAKE FULL TORQUE ON TAKEOFF. ADJUSTED LEFT AND RIGHT SIGNAL CONDITIONERS TO D.S.C. VALUES. (X)Jun 12, 1997 · N305PX · Bag JETSTM3101SDR WTAA970107Ttl Controller · failedSFO - LEFT ENGINE WOULD NOT DEVELOP TAKEOFF POWER. TAKEOFF ABORTED. MAINTENANCE DEFERRED TTL SYSTEM PER MEL 76-2. AIRCRAFT RETURNED TO SERVICE. MAINTENANCE SUBSEQUENTLY CLEARED DEFERRAL BY REPLACING TTL CONTROLLER. OPERATIONAL CHECK SATISFACTORY. (X)Jun 11, 1997 · N401UE · Bag JETSTM3101SDR AU970701Transmitter · faulty(AUS) NO1 ENGINE TORQUE TRANSMITTER FAULTYJun 11, 1997 · Skrsky S76CSDR HEEA0010064Transducer · erraticENG TORQUE ERRATIC READINGS.Jun 6, 1997 · N401PH · Bolkms BK117A3SDR 98ZZZX1391Indicator · failedTORQUE INDICATOR'S FIRST LED SEGMENT WILL NOT ILLUMINATE.Jun 2, 1997 · N313KA · Kaman K1200SDR REXA97155Tq Signal Cond · failedLEFT TORQUE AND EGT FLUCTUATION WITH SRL AND TTL ON, TTL OFF AND NO TORQUE FLUCTUATION BUT STILL EGT FLUCTUATION. SRL CAP LIGHT ILLUMINATED, STILL EGT FLUCTUATION WITH SRL TURNED OFF. REMOVED AND REPLACED LEFT SIGNAL CONDITIONER. (M)May 31, 1997 · N309PX · Bag JETSTM3101SDR HAIHEEA9975Indicator · shortedTORQUE INDICTOR #1 ENGINE SIDE INTERNALLY SHORTED.May 30, 1997 · N3893P · Bell 412SDR HAIHEEA9971Torquemeter · fluctuationTORQUEMETER NEEDLE FLUCTUATES 10% TO 15%.May 30, 1997 · N6603X · Bell 206L3SDR HNAA9797552Tscu · failedFLT 3050 - TPA-TLH - UPON POWER ADVANCE FOR TAKEOFF, THE NR 2 ENGINE PROPELLER AUTO FEATHERED. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE WITHOUT INCIDENT. REMOVED AND REPLACED NR 1 AND NR 2 TORQUE SIGNAL CONDITIONING UNIT (TSCU). (M)May 23, 1997 · N975HA · Dhav DHC8102SDR 97ZZZM874Tscu · failedFLT 3050 - TPA-TLH - UPON POWER ADVANCE FOR TAKEOFF, THE NR 2 ENGINE PROPELLER AUTO FEATHERED. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE WITHOUT INCIDENT. REMOVED AND REPLACED NR 1 AND NR 2 TORQUE SIGNAL CONDITIONING UNIT (TSCU). REFERENMay 23, 1997 · N975HA · Dhav DHC8102SDR HAIHEEA9892Indicator · failedTORQUE INDICATOR WOULD NOT INDICATE.May 19, 1997 · N447PH · Bell 407SDR REXA97132Tq Signal Cond · out of adjustLEFT ENGINE LOW ON TORQUE. ADJUSTED LEFT SIGNAL CONDITIONER. (M)May 16, 1997 · N335PX · Bag JETSTM3101SDR 97ZZZX5071Transducer · malfunctionedTORQUE TRANSDUCER UNIT CAUSES PRESSURE GAUGE TO FLUCTUATE 10 PERCENT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.May 15, 1997 · N7060G · Bolkms BK117B1SDR 97ZZZX3622Indicator · defectiveDUAL TORQUE INDICATOR RECEIVED BAD FROM STOCK. ON INSTALLING, INDICATOR WOULD NOT CALIBRATE (SLOPE NR 1). NEEDLE 1 STUCK AT 20 PERCENT, WITH POWER OFF, IT GOES TO ZERO.May 13, 1997 · Bolkms BK117C1SDR VTZA97275Tq Ring Bridge · failedFLT 6496 - IAD-MDT - DURING CLIMB, MADE AN UNSCHEDULED LANDING AT IAD DUE TO RT ENGINE TORQUE, EGT, FUEL FLOW, AND RPM FLUCTUATING. AIRCRAFT RETURNED TO THE GATE AT IAD WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND FOUND RIGHT ENGINE TORQUE RING BRIDGEMay 12, 1997 · N477UE · Bag JETSTM3201SDR MVH0064159Transmitter · not calibratedTRANSMITTER CALIBRATED IMPROPERLY.May 12, 1997 · N63CF · Aerosp SA365NSDR SWIA97893Tq Signal Cond · failedON INITIAL CLIMB, RIGHT TORQUE GAUGE FLUCTUATED DRAMATICALLY WITH NO ACCOMPANING YAW. THIS WAS FOLLOWED BY RIGHT PROPELLER INADVERTENT AUTO FEATHER. RETURNED TO PSP. CHANGED TORQUE SENSOR AND TORQUE SIGNAL CONDITIONER. RAN RIGHT ENGINE, OPS CHECKS GOOD.May 9, 1997 · N232SW · Emb EMB120ERSDR HAIHEEA9777Indicator · reads highTORQUE INDICATOR READS HIGH OUT OF TOLERANCE.May 7, 1997 · N81SP · Bell 206L3SDR VTZA97262Ttl · malfunctionedFLT 6481 - EWR-IAD - ABORTED TAKEOFF DUE TO LEFT TORQUE DROPPED TO 60 PERCENT AND FLUCTUATED. AIRCRAFT RETURNED TO THE GATE WITH NO FURTHR PROBLEMS. MAINTENANCE INSPECTED AND OPENED DMI07011, MEL 76-2, DEFERRED LEFT TTL. MAINTENANCE CLOSED DMI 07011 ON 5-7-May 3, 1997 · N488UE · Bag JETSTM3201SDR HAIHEEA9713Torque Gauge · reads highTORQUE GAUGE READS TOO HIGH WITH ENGINE OFF.Apr 30, 1997 · N2756P · Bell 206B3SDR VNAA9704008Tq Signal Cond · failedON TAKEOFF ROLL WHEN SETTING POWER, THE LEFT TORQUE INDICATION DROPPED TO ZERO. ABORTED TAKEOFF WITHOUT INCIDENT. MAINTENANCE DETERMIND THAT THIS WAS A TORQUE INDICATION PROBLEM ONLY AND REMOVED AND REPLACED THE LEFT TORQUE SIGNAL CONDITIONER UNIT, OPERATIONApr 29, 1997 · N442JS · Dorner DO328100SDR WTAA970070Tq Indication · surgedFAT LEFT ENGINE TORQUE SURGE REPORTED ON TAKEOFF ROLL. TAKEOFF ABORTED. MAINTENANCE DEFERRED TTL AND SRL SYSTEMS. AIRCRAFT RETURNED TO SERVICE. MAINTENANCE SUBSEQUENTLY CLEARED DEFERRAL. UNABLE TO DUPLICATE DISCREPANCY DURNG ENGINE GROUND RUN. (M)Apr 28, 1997 · N431UE · Bag JETSTM3101SDR REXA97112Circuit Breaker · trippedRIGHT TORQUE GAUGE INOPERATIVE. CYCLED CIRCUIT BREAKER. OPS CHECK GOOD. (X)Apr 28, 1997 · N362PX · Saab 340BSDR VTZA97250Connector · dirtyROC/IAD - FLT 6336 - DURING TAKEOFF AT 2040 HOURS ON 4-27-97, MADE AN UNSCHEDULED LANDING DUE TO RT ENGINE HAD LESS RPM WHEN PULLED BACK TO 99.8 PERCENT. AIRCRAFT WENT TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND CLEANED TTL CANNON PLUG, OPS CApr 27, 1997 · N493UE · Bag JETSTM3201SDR 97ZZZX3601Vartom · failedFAILS TO REACH 108 PERCENT MODE. TORQUE SPLITS AND HUNTING.Apr 25, 1997 · N317MC · Bolkms BK117C1SDR M3HA97060Tq Indication · malfunctionedFLT 421 - OGG - ON TAKEOFF ROLL FROM OGG, WITH POWER SET AT APPROX 89 PERCENT, NR 2 ENGINE TORQUE DROPPED TO 80 PERCENT. NO OTHER ABNORMAL INDICATION NOTED. PERFORMED HIGH POWER RUN UP AND HIGH SPEED TAXI IAW JIC 72-00-00 ERU 1000-001. COULD NOT DUPLICATED Apr 19, 1997 · N4206G · Aerosp ATR42300SDR VTZA97241Tt2 Sensor · failedIAD/ROC - FLT 6326 - DURING DESCENT AT 1310 HOURS ON 4-17-97, AIRCRAFT MADE A SCHEDULED LANDING WITH ONE DISCREPANCY WHICH WAS ON DESCENT FROM 11,000 TO 8,000 FEET, LEFT ENGINE TORQUE DROPPED FROM 100 PERCENT TO 80 PERCENT, THEN CAME BACK TO 100 PERCENT AT 8,0Apr 17, 1997 · N306UE · Jetair JETSTM4101SDR HAIHEEA9331Indicator · sticksDUAL TORQUE #1 NEEDLE STICKS AT 70%.Apr 15, 1997 · N4253S · Skrsky S76ASDR REXA97190Tq Signal Cond · out of adjustRIGHT ENGINE WILL NOT MAKE TORQUE SHORT BY 15 PERCENT. ADJUSTED RIGHT SIGNAL CONDITIONER. (X)Apr 6, 1997 · N307PX · Bag JETSTM3101SDR REXA97089Tq Signal Cond · failedRETURN TO RAMP WITH TORQUE PROBLEM. REMOVED AND REPLACED SIGNAL CONDITIONER. (M)Apr 6, 1997 · N306PX · Bag JETSTM3101SDR 97ZZZX2438Indicator · bindsTORQUE INDICATOR UNIT INOPERATIVE UPON INSTALL. NR 1 ENGINE NEEDLE BINDS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Apr 5, 1997 · N586BH · Bolkms BK117A4SDR REXA97083Tq Signal Cond · malfunctionedLEFT TORQUE ERRATIC WITH TTL ON OR OFF. REMOVED AND REPLACED TORQUE SIGNAL CONDITIONER FOR LEFT ENGING GROUND RAN, CHECKS GOOD. (M)Apr 4, 1997 · N306PX · Bag JETSTM3101SDR 97ZZZX3596Transducer · erraticTORQUE INDICATION ERRATIC.Apr 4, 1997 · N117NG · Bolkms BK117A4SDR M4VA97003Connector · dirtyFLT 22 - DURING TAKEOFF ROLL NR 2 TORQUE INDICATOR DIGITAL READNUT WENT INOP. TAKEOFF WAS ABORTED AND AIRCRAFT RETURNED TO THE GATE WITHOUT INCIDENT. NR 2 TORQUE DIGITAL READOUT WAS PLACED ON MEL. SYSTEM WAS LATER INSPECTED, TORQUE TRANSMITTER CANNON PLUG WMar 31, 1997 · N47RM · Dhav DHC7102SDR VTZA97200Monopole · failedHVN/IAD - FLT 6448 - DURING TAKEOFF AT 1430 HOURS ON 3-30-97, ABORTED TAKEOFF DUE TO LT ENGINE TORQUE WENT TO 80 PERCENT. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND OPENED DMI 56693, MEL 77-10 ON LT SRL. MAINTENANCE CLOSEDMar 30, 1997 · N483UE · Bag JETSTM3201SDR M3HA97056Connector · dirtyHNL - FLT 231 - ON TAKEOFF ROLL, THE CREW NOTICED THAT THE NR 2 ENGINE TQ FLUCTUATION 10 TO 20 PERCENT. THE CREW ABORTED THE T/O AND RETURNED TO THE MX LINE. UPON INSPECTION OF THE NR 2 ENGINE, FOUND OIL IN CANNON PERFORMED GROUND RUN AND BROUGHT UP TO POWERMar 30, 1997 · N4206G · Aerosp ATR42300
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