GE CT7-9B

Service difficulty reports · 1,271

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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 engine_model_key = 'CT79B'
  ORDER BY difficulty_date DESC"

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SDR 97ZZZX4769Gearbox · damagedPRIOR TO DISASSEMBLY, PROP SHAFT NOTED FROZEN IN PLACE. DISASSEMBLY REVEALED AFT HOUSING, OIL PUMP, RIGHT IDLER GEAR, RIGHT IDLER GEAR RETAINING NUT ALL HAVE EXTENSIVE DAMAGE. RIGHT IDLER GEAR NUT BACKED OFF ASSEMBLED POSITION. GEARBOX IS DEEMED SCRAP.Oct 31, 1997 · Saab SF340A · Turbine Engine Reduction GearSDR PNSA971003Engine · malfunctionedRT ENGINE SHOWED LOW POWER ON TAKEOFF ROLL. ABORTED TAKEOFF. FULL POWER WAS OBTAINED ON GROUND RUN SUBSEQUENT FLIGHTS WERE OK, NO FAULTS FOUND.Oct 29, 1997 · N675PA · Saab 340B · Engine (Turbine/Turboprop)SDR 97ZZZX4682Bearing · spalledDISASSEMBLY OF GEAR CASE REVEALED THE INPUT ROLLER BEARING RACE CRACKED, PINION GEAR BEARING SURFACE SPALLED, LEFT AND RIGHT IDLER GEAR RETAINING RINGS BROKE, AND NO TORQUE ON LEFT IDLER GEAR NUT. PINION, SN IC641356. INPUT BEARING, SN 9-259. REF: OPERATOROct 24, 1997 · Saab SF340A · Turbine Engine Reduction GearSDR 97ZZZX4683Retainer Ring · brokenDISASSEMBLY OF GEAR CASE REVEALED THE INPUT ROLLER BEARING RACE CRACKED, PINION GEAR BEARING SURFACE SPALLED, LEFT AND RIGHT IDLER GEAR RETAINING RINGS BROKE, AND NO TORQUE ON LEFT IDLER GEAR NUT. PINION, SN IC641356. INPUT BEARING, SN 9-259. REF: OPERATOROct 24, 1997 · Saab SF340A · Turbine Engine Reduction GearSDR 97ZZZX4684Idler Gear Nut · loose torqueDISASSEMBLY OF GEAR CASE REVEALED THE INPUT ROLLER BEARING RACE CRACKED, PINION GEAR BEARING SURFACE SPALLED, LEFT AND RIGHT IDLER GEAR RETAINING RINGS BROKE, AND NO TORQUE ON LEFT IDLER GEAR NUT. PINION, SN IC641356. INPUT BEARING, SN 9-259. REF: OPERATOROct 24, 1997 · Saab SF340A · Turbine Engine Reduction GearSDR SI3R97012Roller Bearing · crackedDISASSEMBLY OF GEAR CASE REVEALED THE INPUT ROLLER BEARING RACE CRACKED, PINION GEAR BEARING SURFACE SPALLED, LEFT AND RIGHT IDLER GEAR RETAINING RINGS BROKE, AND NO TORQUE ON LEFT IDLER GEAR NUT. PINION, SN IC641356. INPUT BEARING, SN 9-259. REF: OPERATOROct 24, 1997 · Saab SF340A · Turbine Engine Reduction GearSDR SI3R97009Tab Washer · brokenDISASSEMBLY OF GEAR CASE REVEALED RIGHT IDLER GEAR FORWARD TAB WASHER WAS BROKEN AND CRACKED (PN 789578-1, ITEM 65B, FIG 1A). (X)Oct 9, 1997 · Saab SF340A · Turbine Engine Reduction GearSDR SI3R97010Roller Bearing · crackedDISASSEMBLY OF GEAR CASE REVEALED FORWARD ROLLER BEARING INNER RACE CRACKED (PN 775757-1, ITEM 60, FIG 7). (X)Oct 9, 1997 · Saab SF340A · Turbine Engine Reduction GearSDR PLGA970915APgb · failedBOS - FLT 4241 - ON CLIMB-OUT, THE LEFT PROP GEAR BOX OIL PRESSURE WENT TO MAXIMUM READING. AIRCRAFT RETURNED TO BOS AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND LEFT PGB OIL FILTER CONTAMINATED WITH METAL. REPLACED LEFT PGB. AIRCRAFT RETURNED TO SERVICESep 15, 1997 · N364BE · Saab 340B · Turbine Engine Reduction GearSDR MALA975648Pressure Switch · failedFLT 3100 - AFTER TAKEOFF, THE LEFT BLEED FAULT LIGHT ILLUMINATED ON CLIMB, FOLLOWED BY LEFT BLEED CLOSED ILLUMINATING. COMPLETED QUICK REF HANDBOOK AND RETURNED TO MSP. MAINTENANCE REPLACED THE BLEED AIR PRESSURE SWITCH. OPS CHECK GOOD. (M)Sep 12, 1997 · N423XJ · Saab 340B · Compressor Bleed ControlSDR PNSA970810Fuel Control · malfunctionedRT ENGINE STARTED SURGING DURING TAXI, RETURNED TO GATE. REPLACED HMU.Aug 26, 1997 · N685PA · Saab 340B · Fuel Control/Reciprocating EnginesSDR PNSA970807Chip Light · illuminatedLEFT ENG CHIP LIGHT CAME ON, RETURNED UNEVENTFUL LANDING. MINOR SLIVER WITHIN LIMITS, NO FURTHER PROBLEMS NOTED.Aug 20, 1997 · N685PA · Saab 340B · Turbine Engine Accessory DriveSDR SI3R97007Bearing · spalledDURING DISASSEMBLY OF GEARBOX, THE RIGHT FORWARD IDLER GEAR BEARING RACE AND ROLLERS WERE FOUND TO BE SPALLED. (P/N 775660-2, FIG 8, ITEM 85). HSS SO NR 63470SE. CUST: FLAGSHIP A/L. (X)Aug 19, 1997 · Saab 340B · Turbine Engine Reduction GearSDR SI3R97006Retain Nut · lost torqueDURING DISASSEMBLY OF GEARBOX, RETAINING NUT (P/N 775770-6) WAS REMOVED WITH NO OBTAINABLE TORQUE READING USING TORQUE FIXTURE. HSS SO NR 62971SE. CUST: WINGS WEST (X)Aug 15, 1997 · Saab 340B · Turbine Engine Reduction GearSDR WWMA9700112Decu · defectiveDURING CLIMBOUT WITH THE CTOT OFF, THE RIGHT ENGINE LOST POWER AS ITT STARTED TO INCREASE. PULLED POWER LEVER BACK AND NOTICED THE TORQE AND PROP RPM GAUGES WENT TO ZERO. THE ITT SETTLED DOWN ABOUT 150 DEGREES LOWER THAN THE LEFT WITH THE POWER LEVERS MATCHEJul 31, 1997 · N256AE · Saab 340B · Fuel Control/Turbine EnginesSDR PLGA970728AEngine · fodBOS - FLT 4223 - ON CLIMB-OUT, THE CREW EXPERIENCED A LEFT ENGINE DELTA T-SHIFT OF 60 DEGREES. AIRCRAFT RETURNED TO BOS AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND PAPER IN ENGINE INTAKE. REMOVED PAPER AND ENGINE GROUND RAN WITH ALL SYSTEMS CHECKING GOODJul 28, 1997 · N359BE · Saab 340B · Engine (Turbine/Turboprop)SDR MALA975554Chip Light · illuminatedFLT 3310 - AFTER TAKEOFF, THE LEFT ENGINE CHIP DETECTOR ILLUMINATED. AIRCRAFT RETURNED TO DTW. MAINTENANCE INSPECTED SCAVENGE SCREENS AND FOUND NO DEBRIS. COMPLETED ALL APPLICABLE STEPS IAW GEMM 72-00-00. ENGINE RUN AND ALL CHECKS GOOD. (M)Jul 24, 1997 · N412XJ · Saab 340B · Turbine Engine Accessory DriveSDR WWMA9700097Engine · defectiveAFTER T/O AS CLIMB CHECKS WERE STARTED AND CTOT WAS BEING REDUCED, THE LEFT ENGINE BEGAN COMPRESSOR STALLING AND GOT LEFT HAND OIL PRESSURE LIGHT. WE RETARDED LEFT HAND POWER LEVER TO F/I. LEFT ENGINE WAS STILL RUNNING AND ITT WAS FLUCTUATING, OVER TEMP LIGHJul 14, 1997 · N341SB · Saab 340B · Engine (Turbine/Turboprop)SDR AU970726Turbine · failed(AUS) LH ENGINE POWER TURBINE MODULE FAILED - INVESTIGATION FOUND THAT THE STAGE 2 FORWARD COOLING PLATE HAD SEPARATED AT THE OUTER RIM- THE COOLING PLATE WAS A PRE SB 72-392 ITEMJun 27, 1997 · Saab 340B · Turbine SectionSDR CA970626017Smoke Detector · failed(CAN) DURING CLIMB, THE AVIONICS RACK SMOKE WARNING LIGHT CAME ON. NO INDICATION OF FIRE OR SMOKE IN AVIONICS RACK. SUBSEQUENT INVESTIGATION REVEALED NO REASON EXCEPT THAT AVIONICS RACK WAS EXTREMELY DUSTY AND THE DUST COULD HAVE ACTIVATED THE WARNING SENSOR. Jun 19, 1997 · Saab 340B · Smoke DetectionSDR AU970672Fire Detector · faulty(AUS) RH ENGINE FIRE DETECTOR CONTROL UNIT FAULTYJun 13, 1997 · Saab 340B · Fire DetectionSDR AU970671Support · worn(AUS) RH NOSE LANDING GEAR SUPPORT ASSEMBLY WORN BY DRAG BRACE DUE TO MIGRATION OF THE NLG DRAG BRACE TRUNNION BEARING AND PINJun 10, 1997 · Saab 340B · Fuselage, Landing Gear Attach FittingsSDR AU970643Hose · ruptured(AUS) HYDRAULIC HOSE BETWEEN HYDRAULIC PUMP AND FILTER HOUSING FAILEDJun 7, 1997 · Saab 340B · Hydraulic System, MainSDR NVEA9700001Weu · failedFALSE FIRE AND WEU WARNINGS EN ROUTE TO BWI. RETURNED TO JFK WITHOUT INCIDENT. DETERMINED WEU FAULTY. REMOVED AND REPLACED WEU.May 18, 1997 · N201AE · Saab 340B · Central WarningSDR AU970497Duct · burnt(AUS) RH ENGINE INLET LOWER DUCT BURNT AROUND THE INNER UPPER LIP ATTHE PARTICLE SEPARATOR MOUNTING FLANGEMay 16, 1997 · Saab 340B · Engine Air Intake SystemSDR WWMA9700074Compressor · stalledAT APPROXIMATELY 200 FEET ALTITUDE AFTER TAKEOFF, THE LEFT ENGINE POWER DROPPED BACK TO 40 PERCENT TORQUE, ENGINE FLUCTUATED WITH A HAMMERING SOUND. THE RIGHT ENGINE THEN FOLLOWED THE SAME INDICATIONS. THE CTOT HAD BEEN AT 100 PERCENT AND HAD NOT BEEN TOUCHMay 13, 1997 · N313AE · Saab 340B · Turbine Engine Compressor SectionSDR CA970514003Temp Probe · contaminated(CAN) DURING TAKEOFF, THE STARBOARD JET PIPE OVERTEMP LIGHT CAME ON. TAKEOFF ABORTED. INSPECTION REVEALED NO OBVIOUS DEFECTS ALTHOUGH ONE PROBE WAS FOUND WITH A HOLE IN THE SILICON RUBBER WATERPROOFING AT THE ELECTRICAL TERMINALS. PROBE DRIED OUT AND NO OTHER May 7, 1997 · Saab 340B · Engine EGT/TIT Indicating SystemSDR WWMA9700065Engine · smokeCREW REPORTED, SMOKE COMING FROM A SQUARE DUCT ON THE LEFT ENGINE COWLING ON TAXI OUT. AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED THE LEFT ENGINE AND FOUND OIL RESIDUE AROUND THE INLET TO THE HEAT EXCHANGER. NO EVIDENCE OF OIL LEAKS FOUND ON OR ARMay 7, 1997 · N354SB · Saab 340B · Engine (Turbine/Turboprop)SDR NVEA235AEEmergency Buss · lostCAPT REPORTED, EMERGENCY LIGHT CAME ON IN FLIGHT AND WENT OUT AND CAME ON AGAIN AND REMAINED ON AND LOST EMERGENCY BUSS. LT GENERATOR VOLTAGE NORMAL. C/W QRH PROCEDURES AND DIVERTED TO PIT. NO EMERGENCY DECLARED AND NO FURTHER INCIDENT. ISSUED SPECIAL FERRMay 4, 1997 · N235AE · Saab 340B · DC Power Distribution SystemSDR NVEA177AEItt Indication · malfunctionedCREW REPORTED, LT ENGINE ITT INDICATION WENT TO 950 DEG DURING T/O. MAINT INSPECTED AND RAN A/C, ALL PARAMETERS CHECKED OUT. FERRY MIA FOR ADDITIONAL TROUBLESHOOTING.May 3, 1997 · N177AE · Saab 340B · Engine EGT/TIT Indicating SystemSDR NVEA1770413De-Ice Duct · failedCREW REPORTED STRANGE ODOR IN CABIN. AC DIVERTED INTO MCO. MAINT INSPECTED AND REPLACED THE RT INLET HEAT DUCT. ALSO, PERFORMED BORESCOPE INSPECTION OF ENGINE, OPS CHECKED GOOD.Apr 13, 1997 · N177AE · Saab 340B · Air Intake Anti/De-Ice SystemSDR AU970347Harness · faulty(AUS) LH PROPELLER CONTROL HARNESS FAULTYApr 12, 1997 · Saab 340B · Propeller Controlling SystemSDR PLGA970406AFuel Pump · failedBOS - FLT 4373 - AFTER DEPARTURE WHILE ON CLIMB-OUT, THE LEFT ENGINE DRIVEN FUEL PUMP LOW PRESSURE LIGHT ILLUMINATED. AIRCRAFT RETURNED TO BOS AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE LEFT MAIN FUEL PUMP. SYSTEM CHECKED GOOD. AIRCRAFT RETURNEDApr 6, 1997 · N351BE · Saab 340B · Engine Fuel PumpSDR AU970354Smoke Detector · activation(AUS) CARGO COMPARTMENT SMOKE DETECTORS GIVING FALSE WARNING -INVESTIGATION FOUND NO EVIDENCE OF FIRE OR SMOKE - SUSPECT CAUSED BY FAILING FLUORESCENT LAMPS IN THE TOILET AREAApr 3, 1997 · Saab 340B · Smoke DetectionSDR SIMA9700891Engine · malfunctionedSGF - FLT 3935 - CREW REPORTED NR 2 ENGINE ROLL BACK WITH IGNITION LIGHT ILLUMINATING DURING FINAL. CREW ELECTED TO SHUT DOWN NR 2 ENGINE. AIRCRAFT LANDED WITHOUT INCIDENT. INSPECTED NR 2 ENGINE ELECTRICAL AND MECHANICAL CONTROLS. INSPECTED INTAKE FOR FOD Mar 30, 1997 · N298AE · Saab 340B · Engine (Turbine/Turboprop)SDR PLGA970323AChip Detector · failedBGR - FLT 4383 - APPROXIMATELY 3 MINUTES AFTER TAKEOFF, THE LEFT ENGINE CHIP DETECTOR LIGHT ILLUMINATED. AIRCRAFT RETURNED TO BGR AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND LEFT CHIP DETECTOR HAD FAILED. DETECTOR WAS REPLACED AND AIRCRAFT RETURNED TO SEMar 23, 1997 · N356BE · Saab 340B · Turbine Engine Accessory DriveSDR WWMA9700039Flight Idle Tq · out of adjustUPON LANDING, THE FLIGHT IDLE STOP LIGHT DID NOT COME ON AND THE POWER LEVERS COULD NOT BE BROUGHT INTO REVERSE. CREW EXECUTED A TOUCH AND GO LANDING. ALSO, REPORTED ON LANDING WITH THE POWER LEVERS AT FLIGHT IDLE THE RIGHT ENGINE TORQUE WOULD NOT GO BELOW 2Mar 20, 1997 · N324AE · Saab 340B · Fuel Controlling SystemSDR MALA975353O-Ring · failedDTW - FLT 3112 - AFTER DEPARTURE, A STRONG SMELL OF FUEL WAS NOTED, ISOLATED TO THE RIGHT BLEED. AIRCRAFT RETURNED TO DTW WITH NO INCIDENTS. MAINTENANCE REMOVED AND REPLACED RIGHT ACCESSORY GEARBOX O-RINGS. SECURITY AND LEAKS CHECKS GOOD. (X)Mar 19, 1997 · N412XJ · Saab 340B · Turbine Engine Accessory DriveSDR PLGA970313AChip Light · illuminatedBOS - FLT 4376 - LEFT ENGINE CHIP DETECTOR ILLUMINATED UPON REDUCING POWER FOR DESCENT FROM CRUISE ALTITUDE. CREW REDUCED POWER TO FLIGHT IDLE ON LEFT ENGINE IAW ABNORMAL CHECKLIST. LIGHT WAS INTERMITTENT THROUGH DESCENT, LANDING, TAXI AND SHUT DOWN. MAINTEMar 13, 1997 · N356BE · Saab 340B · Turbine Engine Accessory DriveSDR WWMA9700035Fuel Line · leakingCREW REPORTED, A VERY STRONG ODOR OF KEROSENE WAS EMITTING INTO THE CABIN AND COCKPIT DURING THE FLIGHT. THEY SUSPECTED CONTAMINATED BLEED AIR, BUT WAS UNABLE TO LOCATE THE SOURCE. MAINTENANCE FOUND THE BOOT FOR FUEL DRAIN LINE, THAT RUNS FROM THE FUEL PRESSMar 10, 1997 · N358RZ · Saab 340B · Engine Fuel DistributionSDR REXA97053Engine · failedABORTED TAKEOFF DUE TO LEFT ENGINE ITT OVERTEMP AND SMOKE AND FLAMES OUT EXHAUST. LEFT ENGINE MADE A LOUD NOISES ON TAKEOFF. ITT STAYED HIGH AFTER SHUTDOWN. REPLACED LEFT ENGINE IAW AMM 72-00-00. PERFORMED GROUND RUNS AND LEAK CHECK WAS SATISFACTORY. (M)Mar 6, 1997 · N369PX · Saab 340B · Engine (Turbine/Turboprop)SDR AU970220O-Ring · damaged(AUS) RH ENGINE STARTER DRIVE SEAL FLANGE `O' RING SEAL DAMAGED - FLANGE SEAL HAD BEEN CHANGED 1.2 HOURS PREVIOUS - SUSPECT PERSONNEL/MAINTENANCE ERRORMar 5, 1997 · Saab 340B · Turbine Engine Accessory DriveSDR AU970180Blade · separated(AUS) LH ENGINE NO3 BEARING SPALLED - 2ND STAGE TURBINE BLADE BROKEN CAUSING EXTENSIVE DAMAGE TO HOT END SECTION AND POWER TURBINE COMPONENTSFeb 25, 1997 · Saab 340B · Turbine SectionSDR 97ZZZX1261Bearing · spalledDISASSEMBLY OF GEARCASE, P/N 77580010, REVEALED THE FORWARD PROP SHAFT BALL BEARING WAS SPALLED, ONE BALL ONLY (775759-1 FIG 7, ITEM 50).Feb 24, 1997 · N250AE · Saab 340B · Turbine Engine Reduction GearSDR AU970137Smoke Detector · malfunction(AUS) CARGO BAY SMOKE DETECTOR ILLUMINATED WARNING LIGHT - CARGO COMPARTMENT EXTINGUISHER FIRED - CHECK OF COMPARTMENT COULD FIND NO EVIDENCE OF SMOKE OR FIRE - SUSPECT CAUSED BY HIGH HUMIDITYFeb 23, 1997 · Saab 340B · Smoke DetectionSDR SIMA9700522Engine · failedLBB - FLT 3678 - LEFT ENGINE FAILED AFTER TAKEOFF WITH A BANGING SOUND AND ENGINE ROLL BACK. ENGINE WAS SHUT DOWN AND AIRCRAFT LANDED SAFELY. REPLACED LEFT ENGINE IAW SAAB AMM. PERFORMED OPERATIONAL GROUND CHECKS. AIRCRAFT WAS RETURNED TO SERVICE. PART TOFeb 21, 1997 · N901AE · Saab 340B · Engine (Turbine/Turboprop)SDR SIMA9700511Gas Generator · seizedOKC - FLT 3720 - AFTER TAKEOFF AT 200 FEET, CREW REPORTED A BANG OUT OF THE NR 2 ENGINE WITH AN OVERTEMP WARNING. CREW SHUT DOWN ENGINE AND PULLED FIRE T-HANDLE, TEMP WARNING WENT OUT, SO CREW DID NOT DISCHARGE BOTTLES. CAPTAIN DECLARED AN EMERGENCY AND RETUFeb 20, 1997 · N305AE · Saab 340B · Turbine SectionSDR PLGA970217AO-Ring · cutBOS - FLT 3110 - WHILE AT CRUISE, CREW NOTICED THE RT ENGINE OIL PRESSURE WAS FLUCTUATING BETWEEN 70-80 PSI. THE OIL PRESSURE STARTED A SLOW DROP TO BETWEEN 40-50 PSI AT WHICH POINT THE ENGINE WAS SHUT DOWN BY THE CREW. AIRCRAFT CONTINUED TO BOS AND LANDED WFeb 17, 1997 · N351BE · Saab 340B · Turbine Engine Oil SystemSDR AU970111Turbine · damaged(AUS) RH ENGINE HOT SECTION AND POWER TURBINE MODULES DAMAGED - HOT SECTION 1. 2ND STAGE TURBINE FORWARD COOLING PLATE DAMAGED2. 1ST AND 2ND STAGE TURBINE NOZZLES AND ROTOR DAMAGED POWER TURBINE SECTION 1. 3RD AND 4TH STAGE TURBINE NOZZLES AND ROTOR DAMAGED2. Feb 16, 1997 · Saab 340B · Turbine SectionSDR AU970113Connector · faulty(AUS) RH MAIN LANDING GEAR DOWNLOCK MICROSWITCH CONNECTOR INCORRECTLY TIGHTENED DURING MAINTENANCE APPROXIMATELY 160 HOURS PREVIOUS - PLUG LOOSENED DUE TO VIBRATION GIVING INTERMITTENT OPERATION -PERSONNEL/MAINTENANCE ERRORFeb 15, 1997 · Saab 340B · Landing Gear Position and Warning
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