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.
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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR VTZA96256Tq Limiter Vlv · failedFLT NR 6250 - ABE-IAD - DURING TAKEOFF, MADE AN UNSCHEDULED LANDING AT ABE DUE TO LEFT ENGINE NOT MAKING TARGET TORQUE. AIRCRAFT RETURNED AND LANDED AT ABE WITH NO FURTHER INCIDENTS. MAINTENANCE REPLACED TTL VALVE, OPS CHECKS OK. AIRCRAFT WAS RELEASED AND ASDR GLBA96152Tq Sensor · looseSPI - LEFT TORQUE FLUCTUATES 30 TO 40 PERCENT. MAINTENANCE INSPECTED AND FOUND NH SENSOR LOOSE AND HMU SENSOR LOOSE. TIGHTENED AS REQUIRED. OPERATIONAL CHECK GOOD. TEST FLIGHT SATISFACTORY. (M)SDR VTZA96238Tq Signal Cond · out of adjustFLT 6920 - LYH-IAD - ABORTED THE TAKEOFF DUE TO THE LEFT ENGINE NOT MAKING TAKEOFF TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE ADJUSTED THE TORQUE SIGNAL CONDITIONER. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)SDR COEA9670201Tq Ind · failedNR 1 LT TORQUE PRESSURE INDICATOR FAILED DURING TAKEOFF ROLL AT RNO. DURING START UP, TAXI AND INITIAL TAKEOFF POWER SETTING INDICATIONS WERE NORMAL. AFTER INITIAL TAKEOFF POWER WAS SET AND THE ROLL BEGAN, BOTH DIGITAL AND ANALOG TORQUE INDICATIONS FAILED. SDR VTZA96232Tt2 Sensor · broken wireFLT NR 6403 - IAD-BOS - ABORTED THE TAKEOFF DUE TO THE LEFT ENGINE TORQUE SPOOLING DOWN. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MX REPAIRED A WIRE TO THE TT2 SENSOR. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)SDR HEEA967460Indicator · failed#2 NEEDLE WON'T COME UP.SDR RAIA960605Ttl · out of adjustSTL - FLT 7372 - RIGHT TORQUE DROPPED 20 PERCENT AND STABILIZED. MAINTENANCE ADJUSTED RIGHT TTL COMPUTER. PERFORMED GROUND RUNS, OPS CHECK GOOD. (M)SDR 96ZZZX3736Indicator · failedPILOT REPORTED NO TORQUE INDICATION. REPLACED GAUGE. STILL NO TORQUE INDICATION. REPLACED GAUGE. OPS CHECKED GOOD.SDR VTZA96224Connector · dirtyFLT 6407 - LGA-IAD - ABORTED TAKEOFF DUE TO THE LEFT EGT FLUCTUATING. EGT FLUCTUATIONS STABILIZED WITH SRL SELECTED OFF. MX OPENED DMI NR 55614 IAW MEL 76-1. MX LATER CLEARED DMI NR 55614 ON 6-20-96 BY CLEANING ZONE 2 CANNON PLUG AND THE STRAIN GAUGE CANNONSDR VTZA96223Ttl Valve · failedFLT NR 6376 - CRW-IAD - ABORTED TAKEOFF DUE TO THE RIGHT ENGINE TORQUE ROLLING BACK TO 78 PERCENT ON THE TAKEOFF ROLL. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MX REPLACED THE RIGHT ENGINE TTL VALVE. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN SDR 96ZZZM1090Connector · dirtyFLT 6407 - LGA-IAD - ABORTED TAKEOFF DUE TO THE LEFT EGT FLUCTUATING. EGT FLUCTUATIONS STABILIZED WITH SRL SELECTED OFF. MX OPENED DMI NR 55614 IAW MEL 76-1. MX LATER CLEARED DMI NR 55614 ON 6-20-96 BY CLEANING ZONE 2 CANNON PLUG AND THE STRAIN GAUGE CANNONSDR WWMA9600050Ctot · malfunctionedTHE CREW REPORTED, AFTER TAKEOFF THE LEFT ENGINE SPUTTERED 3 TIMES AND OV TEMPERATURE ILLUMINATED BRIEFLY WHILE THE CTOT WAS BEING TURNED OFF. THE AIRCRAFT RETURNED TO FIELD WITHOUT INCIDENT. MAINTENANCE INSPECTED THE LEFT ENGINE COMPRESSORS FOR CLEANLINESS SDR HEEA967403Transmitter · reads highTORQUE READING HIGH AND NORMAL T4 FOUND TORQUE TRANSMITTER INDICATING 8% HIGH.SDR AU960833Indicator · fluctuates(AUS) LH ENGINE TORQUE INDICATOR FLUCTUATINGSDR HEEA967345Torquemeter · erraticERRATIC AND RATCHETY MOVEMENT. TIME SINCE REPAIR :25.SDR HEEA967277Indicator · defectiveINDICATES 3% HIGH OUT OF TOLERANCE AND SLUGGISH OPERATION.SDR AU960763Transmitter · faulty(AUS) ENGINE TORQUE PRESSURE TRANSMITTER INTERNAL FAILURESDR M3HA96013Tq Gauge · malfunctionedHNL - FLT 442 - AIRCRAFT WAS HALF WAY TO OGG, WHEN THE NR 2 TORQUE GAUGE WENT TO 120 PERCENT AND REMAINED. AIRCRAFT WAS DIVERTED BACK TO HNL, AN UNEVENTFUL LANDING WAS MADE. AIRCRAFT WAS TAKEN OFF LINE FOR THE REMAINDER OF THE DAY. REMOVED AND INSTALLED SERSDR GLBA96097Torque Sensor · failedSPI - CREW REPORTED RT TORQUE GAUGE INOPERATIVE (READS ZERO). THEY RETURNED TO GATE. MAINTENANCE REMOVED AND REPLACED RT TORQUE SENSOR. OPS CHECK WAS GOOD. (X)SDR VNAA9600035Connector · dirtyCREW ABORTED THE TAKEOFF AT APPROXIMATELY V1 BECAUSE RIGHT ENGINE TORQUE INDICATION WAS FLUCTUATING BETWEEN 0 AND 100 PERCENT. AIRCRAFT RETURNED TO THE GATE WITHOUT FURTHER INCIDENT. REMOVED, CLEANED AND REINSTALLED THE CANNON PLUG CONNECTOR FOR THE TORQUESDR VTZA96198Tq Signal Cond · out of adjustFLT NR 6172 - LYH-IAD - ABORTED TAKEOFF DUE TO BOTH ENGINES NOT MAKING TAKEOFF TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MX ADJUSTED THE TORQUE SIGNAL CONDITIONERS ON BOTH ENGINES. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE.SDR VTZA96195Tq Signal Cond · out of adjustFLT NR 6407 - IAD-LGA - ABORTED THE TAKEOFF DUE TO THE LEFT ENGINE NOT MAKING TAKEOFF TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE ADJUSTED THE TORQUE SIGNAL CONDITIONER. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. SDR VNAA9600032Torque Sensor · defectiveON THE TAKEOFF ROLL, LT ENGINE TORQUE INDICATION WAS NOT AT THE MINIMUM LEVEL FOR TAKEOFF. CREW ABORTED THE TAKEOFF AND RETURNED TO THE TAXIWAY. CONDUCTED A POWER ASSURANCE RUN TO CHECK ENGINE PARAMETERS. ALL CHECKED NORMAL, CREW CONTINUED WITH TAKEOFF. PRSDR COMA9620006Tq Signal Cond · out of adjustRT ENGINE DID NOT ACHIEVE REQUIRED TORQUE, TAKEOFF ABORTED. ADJUSTED THE TORQUE SIGNAL CONDITIONER AND ACFT RETURNED TO SERVICE.SDR RAIA960514Tq Sig Cond · out of adjustSTL - FLT 7456 - NR 1 ENGINE LOW TORQUE. CALIBRATED TORQUE SIGNAL CONDITIONER. (M)SDR GLBA96084Np Sensor · looseCIU - CREW REPORTED A 30 PERCENT TORQUE LOSS ON RT ENGINE WITH EEC ON. THEY MADE AN AIR TURN-BACK AND LANDED UNEVENTFULLY. MAINTENANCE TIGHTENED RT NP SENSOR. OPS CHECK WAS GOOD. (X)SDR VTZA96176Tq Sig Cond · failedFLT 6546 - IAD-ROA - ABORTED THE TAKEOFF DUE TO BOTH ENGINES BEING TEMPERATURE LIMITED DURING THE TAKEOFF ROLL. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE COMPLETED THE FOLLOWING ADJUSTMENTS/REPLACEMENTS, LEFT ADJUSTED THE COMPENSATING SDR 96ZZZM879Comp Resistor · out of adjustFLT 6546 - IAD-ROA - ABORTED THE TAKEOFF DUE TO BOTH ENGINES BEING TEMPERATURE LIMITED DURING THE TAKEOFF ROLL. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE COMPLETED THE FOLLOWING ADJUSTMENTS/REPLACEMENTS, LEFT ADJUSTED THE COMPENSATING SDR VTZA96171Tq Signal Cond · out of adjustFLT 6467 - PHL-IAD - ABORTED THE TAKEOFF DUE TO THE RIGHT ENGINE ONLY MADE 85 PERCENT TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MX RECALIBRATED THE TORQUE SIGNAL CONDITIONER. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)SDR RAIA960440Tq Signal Cond · inopSTL - FLT 7464 - RIGHT ENGINE INDICATED 60 PERCENT TORQUE AT FLIGHT IDLE DURING APPROACH. MX SWAPPED TO BRIDGE 2 ON THE TORQUE SIGNAL CONDITIONER. PERFORMED GROUND RUNS. OPS CHECK GOOD. (M)SDR RAIA960434Tq Signal Cond · out of adjustSTL - FLT 67 - LEFT ENGINE SHORT ON TARGET TORQUE. MAINTENANCE ADJUSTED TORQUE SIGNAL CONDITIONER. PERFORMED GROUND RUNS OPERATIONAL CHECK GOOD. (M)SDR RAIA960430Connector · dirtySPI - FLT 7087 - LEFT ENGINE DID NOT MAKE TARGET TORQUE. CLEANED CANNON PLUG ON SRL COMPUTER. (M)SDR RAIA960429Tq Signal Cond · out of adjustSTL - FLT 7442 - RIGHT ENGINE DID NOT MAKE TARGET TORQUE. MX ADJUSTED TORQUE SIGNAL CONDITIONER, GROUND RUNS GOOD. (M)SDR C2XA96CI018Tq Signal Unit · failedCLE - FLT 3096 - CREW REPORTED THAT ON TAKEOFF, THE RIGHT ENGINE SURGED ABOUT 100 PERCENT AND THEN AUTOFEATHEREDTO 40 PERCENT. THE CREW PERFORMED A PRECAUTIONARY ENGINE SHUTDOWN. MAINTENANCE INSPECTED AIRCRAFT AND REMOVED AND REPLACED THE RIGHT ENGINE TORQUESDR RAIA960416Tq Signal Cond · out of adjustSTL - FLT NR 7364 - LEFT ENGINE WILL NOT MAKE TARGET TORQUE. MAINTENANCE ADJUSTED TORQUE SIGNAL CONDITIONER, PERFORMED GROUND RUNS OPERATIONAL CHECK GOOD. (M)SDR M3HA96010Np Sensor · dirtyHNL - FLT 231 - SHORTLY AFTER DEPARTURE FROM HNL, THE PILOT NOTICED A PLUS OR +/-3 PERCENT TORQUE FLUCTUATION ON NR 2 ENGINE. AIRCRAFT WAS RETURNED BACK TO HNL, AN UNEVENTFUL LANDING WAS MADE. REMOVED, CLEANED AND REINSTALLED CANNON PLUGS ON THE SYNCROPHASERSDR QXEA9600146Tq Probe · corrodedNR 2 ENGINE TORQUE FLUX AT ROTATION, INCREASED DURING CLIMB AT 500 FT AGL THE ENGINE FEATHERED AND ALL OTHER INDICATIONS WERE NORMAL. AIRCRAFT RETURNED TO THE FIELD AND LANDED WITHOUT FURTHER PROBLEMS. NR 2 TORQUE PROBE PINS FOUND CORRODED. PROBE REPLACED ASDR HEEA966970Torquemeter · reads highTORQUEMETER INDICATES HIGH OUT OF TOLERANCE AT 60%.SDR HEEA966961Transmitter · wont testTORQUE TRANSMITTER WON'TTEST CORRECTLY. CAUSES INDICATOR TO READ LOW.SDR GLBA96070Connector · looseDEN - CREW ABORTED TAKEOFF WHEN RIGHT NP INDICATOR FLUCTUATED FROM 0 TO 100 PERCENT BEFORE SETTLING BELOW 10 PERCENT. MAINTENANCE TIGHTENED LOOSE CONNECTOR ON LEFT NP SENSOR AND PERFORMED SENSOR RESISTANCE CHECK. OPS CHECK WAS GOOD. (M)SDR RAIA960403Tq Signal Cond · failedSTL - FLT NR 7424 - LEFT ENGINE ONLY PRODUCED 85 PERCENT TORQUE. MAINTENANCE REPLACED LEFT TORQUE SIGNAL CONDITIONER, GROUND RUNS GOOD. (M)SDR RAIA960325Tq Signal Cond · out of adjustSTL - FLT NR 7034 - RIGHT ENGINE WOULD NOT MAKE TARGET TORQUE. MAINTENANCE ADJUSTED TORQUE SIGNAL CONDITIONER, PERFORMED GROUND RUNS, OPERATIONAL CHECK GOOD. (M)SDR 96ZZZX3584Transducer · defectiveTRANSDUCER SENDING FALSE SIGNALS TO TORQUE METER. REPLACED WTIH NEW UNIT, CORRECTED PROBLEM.SDR WTAA960064Torque Ring · malfunctionedFAT - LEFT ENGINE TORQUE FLUCTUATION BETWEEN 100 PERCENT AND 80 PERCENT DURING TAKEOFF ROLL REPORTED. TAKEOFF ABORTED WITHOUT INCIDENT. CREW ACCOMPLISHED ENGINE GROUND RUN CHECK AT 104.5 PERCENT WITH NO DISCREPANCIES NOTED. PROBLEM REOCCURED ON SECOND ABORTSDR CA960513006Transducer · failed(CAN)ON TAKEOFF, TORQUE INDICATION DECAYED THROUGH 60 PSI FROM 68 PSI. POWER REDUCTION WAS ALSO AUDIBLE. THE ELECTRONIC LIMITER UNIT WARNING LIGHT ILLUMINATED AND THE CREW ISOLATED THE ELECTRONIC LIMITER S YSTEM. POST EVENT DOWNLOAD OF THE ELU REVEALED A FAULTSDR RAIA960323Ttl Connector · dirtyFAT - FLT 4750 - RIGHT ENGINE TORQUE FLUCTUATION IN FLIGHT. MAINTENANCE DEFERRED RIGHT ENGINE TTL PER MEL 76-2. MAINTENANCE CLEARED DMI BY CLEANING TTL CONNECTOR, PERFORMED GROUND RUNS OPERATIONAL CHECKS GOOD. (M)SDR COMA9630075Ctot · defectiveRIGHT ENGINE TAILPIPE HOT WARNING SHORTLY AFTER TAKEOFF. POWER WAS REDUCED AND WARNING CEASED. WHEN POWER WAS ADVANCED, THERE WERE WILD FLUCTUATIONS IN TORQUE AND ITT. THE ENGINE WAS SECURED AND ACFT RETURNED TO FIELD. THE TORQUE AND ITT FLUCTUATIONS WERE SDR SIMA960771Sensor · failedTUL - FLT 3734 - RIGHT ENGINE TORQUE FLUCTUATION OF 23 PERCENT IN CRUISE, IN-FLIGHT SHUT DOWN BY CREW. REPLACED 1.8 SENSOR, GROUND RUN GOOD. AIRCRAFT RETURNED TO SERVICE. (X)SDR RAIA960313Tq Signal Cond · dirtySTL - FLT 7174 - ATPCS WILL NOT ARM. MAINTENANCE CLEANED LEFT ENGINE TORQUE SIGNAL CONDITIONER CONNECTIONS, OPERATIONAL CHECK GOOD. (X)SDR RAIA960312Tq Signal Cond · dirtySTL - FLT 7174 - ATPCS WILL NOT ARM. MAINTENANCE CLEANED LEFT ENGINE TORQUE SIGNAL CONDITIONER CONNECTIONS, OPERATIONAL CHECK GOOD. (X)
Back to JASC 7712