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 REXA97079Tq Signal Cond · out of adjustLEFT ENGINE WOULD NOT MAKE TAKEOFF TORQUE. ADJUSTED SIGNAL CONDITIONER AND REMOVED AND REPLACED FLOW CONTROL VALVE. (M)Mar 27, 1997 · N318PX · Bag JETSTM3101SDR 97ZZZM499Torque Probe · failedFLT 3236 - CLT-HHH - THE NR 2 ENGINE EXPERIENCED UNSCHEDULED PROP FEATHER AT 200 FEET AGL ON TAKEOFF. THE AIRCRAFT TURNED BACK AND LANED IN CLT WITHOUT INCIDENT. REMOVED AND REPLACED THE NR 2 ENGINE ELECTRONIC CONTROL UNIT AND THE NR 2 TORQUE PROBE. REFERENMar 27, 1997 · N992HA · Dhav DHC8201SDR RAIA970310Connector · contaminatedJLN - FLT 7068 - LEFT ENGINE DID NOT MAKE TARGET TORQUE. MAINTENANCE CLEANED LEFT ENGINE TORQUE CANNON PLUG. PERFORMED GROUND RUN AND OPERATIONAL CHECK OF TTL SYSTEM. ALL PARAMETERS NORMAL. CLEARED MEL 76-2 CATC. ACFT TT: 12,818.6 HRS. (X)Mar 24, 1997 · N427AM · Bag JETSTM3201SDR UF6A9700306Tq Indicator · failedSBN - FLT 5751 - UPON ADVANCING POWER LEVERS FOR TAKEOFF, NR 2 TORQUE INDICATOR REMAINED AT 10 PERCENT WHILE NP ADVANCED. MAINTENANCE REMOVED AND REPLACED NR 2 TORQUE INDICATOR. SYSTEM OPS CHECKED GOOD. (X)Mar 18, 1997 · N857AW · Bag ATPSDR 97ZZZX2152Torquemeter · erraticTORQUE INDICATOR NR 1 SIDE OPERATES ERRATICALLY. REPLACED WITH REPAIRED UNIT, CORRECTED PROBLEM.Mar 18, 1997 · N7060G · Bolkms BK117B1SDR REXA97063Ctot · malfunctionedON TAKEOFF, LEFT CTOT EXCEEDED DESIRED SETTING, DEFERRED. (M)Mar 17, 1997 · N327PX · Saab SF340ASDR MALA975350Tq Signal Cond · failedFLT 3370 - AFTER TAKEOFF FROM MSP, RIGHT TORQUE GAUGE FLUCTUATES PLUS/MINUS 3 PERCENT. ALSO, SHOWED FLUCTUATIONS ON THREE OCCASIONS. AIRCRAFT RETURNED TO MSP. MAINTENANCE WAS UNABLE TO VERIFY TORQUE FLUCTUATION ON THE GROUND RUNS ON RIGHT ENGINE. REMOVED AMar 14, 1997 · N853MA · Dhav DHC8102SDR HNAA9791132Tq Sensor Tscu · failedFLT EN73 - PHF-ORF - DURING CLIMB-OUT, NR 1 ENGINE TORQUE ROLLED BACK FROM 90-30 PERCENT, ENGINE AUTOFEATHERED AND THE CREW SHUT ENGINE DOWN. THE AIRCRAFT CONTINUED TO ORF AND LANDED WITHOUT INCIDENT. REMOVED AND REPLACED THE NR 1 ENGINE TORQUE SENSOR AND THMar 12, 1997 · N911HA · Dhav DHC8102SDR 97ZZZM497Tq Signal Cond · failedFLT EN73 - PHF-ORF - DURING CLIMB-OUT, NR 1 ENGINE TORQUE ROLLED BACK FROM 90-30 PERCENT, ENGINE AUTOFEATHERED AND THE CREW SHUT ENGINE DOWN. THE AIRCRAFT CONTINUED TO ORF AND LANDED WITHOUT INCIDENT. REMOVED AND REPLACED THE NR 1 ENGINE TORQUE SENSOR AND THMar 12, 1997 · N911HA · Dhav DHC8102SDR M4VA97001Connector · contaminatedFLT 22 - DURING TAKEOFF ROLL, NR 2 TORQUE INDICATOR DIGITAL READOUT 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 Mar 10, 1997 · N47RM · Dhav DHC7102SDR HNAA9798634Tq Signal Cond · failedFLT 3005 - CLT-TLH - AFTER TAKEOFF, UPTRIM ADVISORY LIGHT FLICKERED ON AND OFF AND NR 1 ENGINE UPTRIMMED. THE A/C CONTINUED ON TO TLH AND LANDED WITHOUT INCIDENT. REMOVED AND REPLACED NR 2 TORQUE SIGNAL CONDITIONING UNIT (TSCU). ON SUBSEQUENTLY FLIGHT, AFTEMar 9, 1997 · N986HA · Dhav DHC8201SDR 97ZZZM498Tq Signal Cond · failedFLT 3005 - CLT-TLH - AFTER TAKEOFF, UPTRIM ADVISORY LIGHT FLICKERED ON AND OFF AND NR 1 ENGINE UPTRIMMED. THE A/C CONTINUED ON TO TLH AND LANDED WITHOUT INCIDENT. REMOVED AND REPLACED NR 2 TORQUE SIGNAL CONDITIONING UNIT (TSCU). ON SUBSEQUENTLY FLIGHT, AFTEMar 9, 1997 · N986HA · Dhav DHC8201SDR VTZA97159Tq Signal Cond · failedFLT 6570 - IAD-MDT - ABORTED TAKEOFF, DUE TO AIRCRAFT AT 70 KNOTS, RIGHT ENGINE TORQUE DROPPED TO 50 PERCENT. ARICRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE SWAPPED BRIDGES ON RIGHT TORQUE SIGNAL CONDITIONER AND RECALIBRATED, OPS CHECK OK. Mar 3, 1997 · N493UE · Bag JETSTM3201SDR VTZA97152Tq Signal Cond · failureFLT 6568 - IAD-SCE - DURING CRUISE, MADE AN UNSCHEDULED LANDING DUE TO RIGHT ENGINE TORQUE, RPM, AND FUEL FLOW FLUCTUATED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REPLACED RIGHT TORQUE SIGNAL CONDITIONER, OPS CHECK OK. Feb 25, 1997 · N477UE · Bag JETSTM3201SDR WTAA970032Tq Signal Cond · malfunctionedFAT - LEFT ENGINE TORQUE INDICATION REPORTED AT 120 PERCENT AFTER TAKEOFF. CREW SECURED LEFT ENGINE AND RETURNED TO STATION WITHOUT INCIDENT. MAINTENANCE REPLACED LEFT ENGINE TORQUE SIGNAL CONDITION UNIT. ENGINE INDICATIONS NORMAL DURING ENGINE GROUND RUN. Feb 21, 1997 · N418UE · Bag JETSTM3101SDR VTZA97149Tq Signal Cond · out of adjustFLT 6427 - IAD-ROA - ABORTED TAKEOFF DUE TO LEFT ENGINE WOULD ONLY MAKE 94 PERCENT TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED ENGINE AND ADJUSTED TORQUE SIGNAL CONDITIONER AND EGT, OPS CHECK OK. AIRCRAFT WAS RELEASED AFeb 21, 1997 · N482UE · Bag JETSTM3201SDR VTZA97148Tq Indicator · rolled backFLT 6485 - IAD-JFK - ABORTED TAKEOFF DUE TO LEFT ENGINE TORQUE ROLLED BACK TO 90 PERCENT. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED ENGINE AND NO DEFECTS FOUND AND COULD NOT DUPLICATE. OPS CHECK OK. AIRCRAFT WAS RELEASED ANDFeb 21, 1997 · N480UE · Bag JETSTM3201SDR VTZA97145Tq Indication · malfunctionedFLT 6225 - IAD-BOS - ABORTED TAKEOFF DUE TO RIGHT ENGINE WOULD ONLY MAKE 96 PERCENT TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND GROUND RAN AIRCRAFT AND COULD NOT DUPLICATE. OPS CHECK OK. AIRCRAFT WAS RELEASED AND AFeb 21, 1997 · N308UE · Jetair JETSTM4101SDR VTZA97144Tq Indication · malfunctionedFLT 6417 - CHS-IAD - ABORTED TAKEOFF DUE TO LEFT ENGINE WOULD ONLY MAKE 70 PERCENT TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND RAN AIRCRAFT AND COULD NOT DUPLICATE AND NO DEFECTS NOTED. OPS CHECK OK. AIRCRAFT WAS RFeb 21, 1997 · N327UE · Jetair JETSTM4101SDR 97ZZZX2159Transducer · failedTORQUE PRESSURE TRANSDUCER FAILED. NEEDLE SPINS ON GAUGE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Feb 21, 1997 · N911VU · Bolkms BK117B1SDR RAIA970221Tq Signal Cond · erraticSTL - FLT 7378 - LEFT ENGINE TORQUE INDICATION FLUCTUATED 4 PERCENT. MAINTENANCE REPLACED THE LEFT ENGINE TORQUE SIGNAL CONDITIONER. (M)Feb 18, 1997 · N433AM · Bag JETSTM3201SDR CA970421047Indicator · failed(CAN) TORQUE INDICATOR INSTALLED IN VERTICAL REFERENCE WINDOW WAS READING 12 PERCENT HIGH WITH ENGINE SHUTDOWN.Feb 14, 1997 · Snias AS350BASDR 97ZZZX2153Torquemeter · failedTORQUE INDICATOR NR 1 NEEDLE STICKS AT 60 PERCENT. NR 2 NEEDLE SLOPE ADJUSTMENT IS INOPERATIVE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Feb 10, 1997 · N7060G · Bolkms BK117B1SDR RAIA970209Tq Signal Cond · out of adjustSTL - FLT 7490 - LEFT ENGINE TORQUE FLUCTUATED AT 70 KTS. MAINTENANCE ADJUSTED THE LEFT TORQUE SIGNAL CONDITIONER. (M)Feb 9, 1997 · N433AM · Bag JETSTM3201SDR 9702491146Tt2 Sensor · failedDURING TAKEOFF, THE NR 1 ENGINE FAILED TO ACCELERATE. TAKEOFF WAS ABORTED AT 70 KNOTS. MAINTENANCE REPLACED THE TT2 SENSOR AND RETURNED TO SERVICE.Feb 7, 1997 · N146US · Doug DC1040SDR HEEA978927Transmitter · fluctuationsTORQUE INDICATOR FLUCTUATIONS IN FLIGHT. RESIDUAL INDICATION AFTER SHUTDOWN. SENT TO BELL HELICOPTER TEXTRON FOR CREDIT AGAINST REPLACEMENT PART PURCHASED.Jan 23, 1997 · N141MA · Bell 407SDR HEEA978926Indicator · fluctuationTORQUE INDICATOR FLUCTUATIONS IN FLIGHT. RESIDUAL INDICATION AFTER SHUTDOWN.Jan 23, 1997 · N141MA · Bell 407SDR SWIA97846Torque Ind · failedDIGITAL READ-OUT ON RIGHT TORQUE GAUGE DOES NOT FUNCTION. ANALOG FUNCTIONS NORMAL. ABORTED TAKEOFF AND TAXIED BACK TO THE GATE. REPLACED RIGHT TORQUE INDICATOR. OPS CHECKS GOOD ON GROUND.Jan 21, 1997 · N221SW · Emb EMB120ERSDR WTAA970009Torque Ring · malfunctionedLAX - LT ENG TORQUE SURGE PLUS OR MINUS 6 TO 7 PERCENT REPORTED AT 60 PERCENT TORQUE AFTER DEPARTURE. A/C RETURNED TO STA W/O INCIDENT. MX DEFERRED LT ENG SRL AND TTL SYS'S. UNABLE TO DUP TORQUE SURGE DURING GROUND RUN WITH SRL AND TTL OFF. A/C RETURNED TOJan 19, 1997 · N428UE · Bag JETSTM3101SDR 97ZZZX2160Torquemeter · failedTORQUE INDICATOR SLOPE ADJUSTMENT FOR NR 2 SIDE IS MISSING. NEEDLE STICKS AT 25 PERCENT TORQUE ON NR 2 SIDE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Jan 18, 1997 · N7060G · Bolkms BK117B1SDR HEEA978843Transmitter · defectiveENGINE TORQUE FLUCTUATES 20%.Jan 10, 1997 · N407PH · Bell 407SDR HEEA978842Indicator · fluctuatesTORQUE INDICATOR FLUCTUATES 20%.Jan 10, 1997 · N407PH · Bell 407SDR SWIA95798Torque Monitor · malfunctionedLEFT ENGINE FAILED AFTER TAKEOFF AT 600 FT. RETURNED TO FIELD. DETERMINED LEFT ENGINE HAD AN AUTO FEATHER WITHOUT ENGINE SHUT DOWN. REPLACED LEFT ENGINE TORQUE PROBE WITH SERVICEABLE UNIT. ALL GROUND CHECKS GOOD IAW MM 73.Dec 21, 1996 · N223SW · Emb EMB120ERSDR VTZA96442Ap/P Box · failedFLT 6418 - IAD-BOS - DURING TAXI, RETURNED TO GATE DUE TO RIGHT IEC WARNING LIGHT ILLUMINATED. MAINTENANCE REMOVED AND REPLACED AP/P BOX, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)Dec 14, 1996 · N310UE · Jetair JETSTM4101SDR VTZA96440Tq Sig Cond · malfunctionedFLT 6337 - IAD-EWR - ABORTED TAKEOFF DUE TO LEFT ENGINE WOULD ONLY MAKE 87 PERCENT TORQUE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND SWAPPED BRIDGES ON BOTH ENGINES SIGNAL CONDITIONERS THREW IEC, OPS CHECK OK. AIRCRAFT WADec 13, 1996 · N325UE · Jetair JETSTM4101SDR HEEA968740Indicator · shorted#1 NEEDLE SHORTED TO CASE. SENT TO MASCO FOR WARRANTY REPAIR.Dec 13, 1996 · N2261D · Bell 412SDR CA970110005Indicator · leaking(CAN) TORQUE INDICATOR WAS NOTED TO BE LEAKING AND FILLING WITH OIL.Dec 13, 1996 · Cessna 208BSDR RAIA961206Tq Signal Cond · failedSTL - FLT 7316 - LEFT ENGINE WILL NOT MAKE TORQUE. REMOVED AND REPLACED TORQUE SIGNAL CONDITIONER. (M)Dec 10, 1996 · N422AM · Bag JETSTM3201SDR RAIA970108Torque Ring · bad bridgeCGI - FLT 7393 - NR 2 ENGINE INDICATES ZERO TORQUE. SWITCHED BRIDGES ON TORQUE RING. (M)Dec 6, 1996 · N422AM · Bag JETSTM3201SDR COMA9620018Tq Indicator · defectiveLEFT ENGINE TORQUE INDICATOR FAILED DURING TAKEOFF, CIRCUIT BREAKER TRIPPED. REPLACED TORQUE INDICATOR.Dec 2, 1996 · N703CA · Swrngn SA227ACSDR HEEA968581Indicator · wont calibTORQUE IND WON'T CALIBRATE.Nov 25, 1996 · N6100U · Snias AS350B2SDR HEEA968561Indicator · failedINSTALLED GAUGE IN AIRCRAFT BUT #2 NEEDLE WOULD NOT WORK.Nov 25, 1996 · N4253S · Skrsky S76ASDR HEEA968545Transmitter · defectiveTORQUE GAUGE READS 4% HIGH. REPLACED WITH SERVICEABLE TRANSMITTER.Nov 22, 1996 · N60951 · Snias AS350B2SDR CA961128014Torquemeter · loose(CAN) IN CRUISE NR 3 ENGINE TORQUE INDICATION FAILED. POST FLIGHT MAINTENANCE INSPECTION FOUND THE TORQUE PICKUP TO BE RUBBING ON THE TORQUE SHAFT AND SOME TORQUEMETER ATTACHMENT NUTS MISSING AT THE REDUCTION GEARBOX ATTACH POINT. AIRCRAFT FERRIED FOR ENGINENov 21, 1996 · Lkheed 382GSDR HNAA9698676Tscu · failedTLH/TPA - FLT 3240 - ON CLIMB-OUT AT 300 FEET, AUTOFEATHER SELECTED ON, NR 1 ENGINE UP-TRIM LIGHT FLICKERED, AND ENGINE ATTEMPTED TO UP-TRIM. THE AIRCRAFT TURNED BACK TO TLH AND LANDED WITHOUT INCIDENT. REMOVED AND REPLACED NR 2 TORQUE SIGNAL CONDITIONING UNNov 20, 1996 · N986HA · Dhav DHC8201SDR RAIA961116Connector · contaminatedLEX - FLT 7481- RIGHT POWER LEVER DOES NOT RESPOND TO POWER LEVER INPUTS. MAINTENANCE CLEANED OIL FROM THE RIGHT TORQUE RING CANNON PLUG. (M)Nov 14, 1996 · N551HK · Jetair JETSTM4101SDR 96ZZZX6116Indicator · failedINDICATOR FAILED. REPLACED WITH NEW TRIPLE TORQUE IND.Nov 12, 1996 · N6283T · Bell 430SDR WTAA960190Tq Sig Cond · failedMRY - LEFT ENGINE BEGINS TO AUTO FEATHER WITH POWER LEVER ADVANCED. TAKEOFF ABORTED. AIRCRAFT RELEASED FOR ONE TIME FERRY FLIGHT TO FAT. MAINTENANCE REMOVED AND REPLACED LEFT TORQUE SIGNAL CONDITIONER. OPERATIONAL CHECK SATISFACTORY. AIRCRAFT RETURNED TO Nov 10, 1996 · N284UE · Emb EMB120RTSDR VTZA97053Connector · dirtyFLT 6549 - CLE-IAD - MADE AN UNSCHEDULED LANDING DUE TO LEFT ENGINE TORQUE FLUCTUATIONS AND SURGE. AIRCRAFT RETURNED TO GATE WITH NO FURTHER INCIDENTS. MAINTENANCE CLEANED LEFT ENGINE STRAIN GAUGE CANNON PLUG AND SWAPPED TORQUE SIGNAL CONDITIONER BRIDGES, OPNov 7, 1996 · N481UE · Bag JETSTM3201SDR GLBA96214Tscu · failedALO - AFTER START LEFT ENGINE REMAINED IN FEATHER UNTIL AUTOFEATHER SWITCHED OFF. CYCLING AUTOFEATHER SWITCH CAUSES EACH PROP TO FEATHER ALTERNATELY. SMOKE FROM LEFT SIDE PANEL. MAINTENANCE REMOVED AND REPLACED RIGHT TORQUE SIGNAL CONDITION UNIT. NO SMOKE Nov 6, 1996 · N451UE · Emb EMB120RT
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