Pratt & Whitney JT9D-7Q

Service difficulty reports · 258

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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 = 'JT9D7Q'
  ORDER BY difficulty_date DESC"

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SDR 9800026740Engine · flameoutDURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 1 ENGINE N1 INDICATION SPIKED AND THE ENGINE SHUT DOWN. MAINTENANCE INSPECTED INLET AND EXHAUST WITH NO DEFECTS NOTED. THE NR 1 N1 INDICATOR WAS REPLACED AND AN ENGINE RUN WAS PERFORMED INCLUDING REVERSEJan 1, 1998 · N640US · Boeing 747251F · Engine (Turbine/Turboprop)SDR P5CA9701812R-Rail · crackedCRACK (RADIAL OD) IN NR 2 ENG R-RAIL AT FASTENER HOLE AT 9 O'CLOCK POSITION. WELDED AND STRESS RELIEVED PER PW MM 72-51-01.Oct 31, 1997 · N920FT · Boeing 747249F · Turbine SectionSDR TWRA97177Engine · damagedAFTER APPROXIMATELY 3 HOURS OF FLIGHT, NR 2 ENGINE WAS SHUT DOWN AT FL 33.0 DUE TO RISING EGT AND DROPPING N1. PEAK EGT 650 DEGREES. UPON INSPECTION, FOUND DAMAGED 8TH, 9TH, AND 15TH STAGE COMPRESSOR. ALSO, FOUND 2ND AND 3RD STAGE TURBINE DAMAGED. (AIRCRAFSep 24, 1997 · N618FF · Boeing 747212B · Engine (Turbine/Turboprop)SDR 9716266624Compressor · stalledDURING LANDING ROLLOUT AND WHILE IN REVERSE THRUST, THE NR 3 ENGINE EXPERIENCED A COMPRESSOR STALL. N1 AND N2 DECREASED WHILE EGT ROSE TO 505C. THE ENGINE WAS SHUT DOWN IN REVERSE. MAINTENANCE RAN ENGINE AND OPERATIONALLY CHECKED THE REVERSE OPERATION. ALLAug 26, 1997 · N624US · Boeing 747251B · Turbine Engine Compressor SectionSDR SRAA970710Engine · over tempON TAXI IN, TOWER REPORTED TORCHING FROM LEFT SIDE OF AC, CREW NOTICED NR 2 ENGINE OIL PRESSURE LIGHT CAME ON, EGT WENT UP TO 830 DEG CELSIUS FOR LESS THAN 30 SECONDS. SHUT DOWN NR 2 ENGINE AND ARRIVED AT BLOCK WITHOUT INCIDENT. FOUND ENGINE OVERTEMPED. REMJul 11, 1997 · N740SJ · Boeing 747246F · Engine (Turbine/Turboprop)SDR 9712626628Evbc Filter · dirtyDURING LANDING WHILE COMING OUT OF REVERSE THRUST, THE NR 4 ENGINE RPM DROPPED TO ZERO. EGT ROSE TO 710C FOR TEN SECONDS AND OIL PRESSURE DROPPED TO ZERO. ENGINE WAS SHUT DOWN. MAINTENANCE PERFORMED AN OVER TEMPERATURE INSPECTION AND TROUBLESHOOTING PER FIM Jun 28, 1997 · N628US · Boeing 747251B · Compressor Bleed ControlSDR 9712636615Epr Indication · malfunctionedWHEN FULL POWER WAS APPLIED AT TAKEOFF, THE NR 1 ENGINE ONLY INDICATED AN EPR OF 1.46. OTHER ENGINE INDICATIONS WERE NORMAL. TAKEOFF WAS ABORTED. MAINTENANCE VISUALLY CHECKED THE NR 1 ENGINE INLET AND EXHAUST WITH NO TROUBLE FOUND. THE NR 1 ENGINE EPR INDICJun 28, 1997 · N615US · Boeing 747251B · Engine Pressure Ratio (EPR)SDR 9712066615Engine · failedON CLIMBOUT, THE NR 1 ENGINE COMPRESSSOR STALLED WITH EPR DOWN TO 1.0 AND EGT IN RED. FOUR MINUTES LATER, ANOTHER STALL OCCURRED AND THE CREW SHUT THE ENGINE DOWN. DUMPED 120,000 LBS OF FUEL AND THE AIRCRAFT RETURNED TO MSP. MAINTENANCE INSPECTED THE ENGINEJun 20, 1997 · N615US · Boeing 747251B · Engine (Turbine/Turboprop)SDR 9711136624Tr Unit · malfunctionedNR 1 ENGINE THRUST REVERSER WOULD NOT STOW AFTER LANDING. CREW RECYCLED THE NR 1 REVERSER LEVER AND THE ENGINE COMPRESSOR STALLED. EGT PEAKED AT 550C FOR 2 TO 3 SECONDS AND THE ENGINE WAS SHUT DOWN. MAINTENANCE INSPECTED ENGINE INLET, EXHAUST, AND BLEED SYSJun 6, 1997 · N624US · Boeing 747251B · Engine Thrust ReverserSDR 9710366739Engine · flamed outAFTER SUCCESSFUL START OF NR 4 ENGINE, NR 4 ENGINE FLAMED OUT. CREW CYCLED CIRCUIT BREAKERS FOR IGNITION AND FUEL CONDITION ACTUATOR. ENGINE RESTART WAS NORMAL. MAINTENANCE IN NRT CHANGED FUEL CONDITION ACTUATOR AND FUEL FILTER. FUNCTION CHECK WAS NORMAL.May 26, 1997 · N639US · Boeing 747251F · Engine (Turbine/Turboprop)SDR 9708926623Compressor · stalledON TAXI OUT, CREW FELT A COMPRESSOR STALL, NR 4 ENGINE FLAMED OUT WITH EGT RISING TO RED. ENGINE WAS MOTORED UNTIL EGT WAS BELOW 150C. MAINTENANCE INSPECTED ENGINE PER MM 72--00-00, PG 601 AND FIM 71-01-00, PG 23. NO DEFECTS WERE NOTED. ENGINE RUN CHECKED May 5, 1997 · N623US · Boeing 747251B · Turbine Engine Compressor SectionSDR 9707706634Epr Indicator · malfunctionedDURING TAKEOFF, THE NR 2 ENGINE EPR INDICATION LOW. ABORTED TAKEOFF AT 80 KNOTS. MAINTENANCE REPLACED EPR INDICATOR.Apr 17, 1997 · N634US · Boeing 747227B · Engine Pressure Ratio (EPR)SDR 9705136739Compressor · stalledNR 3 ENGINE EXPERIENCED TWO COMPRESSOR STALLS. FLIGHT CREW SHUT DOWN NR 3 ENGINE AND BEGAN DUMPING 80,000 POUNDS OF FUEL IN PREPARATION FOR LANDING. AN UNEVENTFUL LANDING WAS PERFORMED AT DEPARTURE AIRPORT. MAINTENANCE FOUND EVIDENCE OF INTERNAL ENGINE DAMAMar 8, 1997 · N639US · Boeing 747251F · Turbine Engine Compressor SectionSDR 9702826634Tr Switch · lack of lubeDURING CRUISE, THE NR 2 REVERSER UNLOCK LIGHT ILLUMINATED. AIRCRAFT DIVERTED TO FAR AND LANDED WITHOUT INCIDENT. LUBED AND ADJUSTED THRUST REVERSER SWITCH, OPERATIONAL CHECK GOOD.Feb 10, 1997 · N634US · Boeing 747227B · Engine Thrust ReverserSDR 9701866625Engine · bird strikeDURING CLIMB AFTER DEPARTURE, CREW REPORTED POSSIBLE BIRD STRIKE ON RIGHT WING. DURING CRUISE FLIGHT, NR 3 ENGINE HAD A LOW FREQUENCY VIBRATION AT LOWER POWER SETTINGS. NR 3 ENGINE OIL QUANTITY BEGAN TO DECREASE, NR 3 ENGINE WAS SHUT DOWN AND LATER RESTARTEDJan 27, 1997 · N625US · Boeing 747251B · Engine (Turbine/Turboprop)SDR 9701736627Combust Chamber · failedNR 1 ENGINE FAILED AFTER TAKEOFF POWER WAS APPLIED. AIRCRAFT TAXIED BACK TO THE GATE AND PASSENGERS DEPLANED THROUGH JETWAY WITHOUT FURTHER EVENT. MAINTENANCE FOUND NR 1 ENGINE DIFFUSER CASE AND COMBUSTION CHAMBERS RUPTURED. DAMAGE TO PYLON SKIN AND WING LEJan 26, 1997 · N627US · Boeing 747251B · Turbine Engine Combustion SectionSDR SRAA0101Borescope Plug · missingON CLIMBOUT, NR 4 A,B NACELLE TEMPERATURE INDICATOR READ 7.0 UNITS ON BOTH SYSTEMS WITH CLIMB THRUST SETTING. DUMPED FUEL AND ACCOMPLISHED AIR TURNBACK TO MIA WITHOUT INCIDENT. FOUND ENGINE BORESCOPE PLUG AT 12 O'CLOCK POSITION ON DIFFUSER CASE MISSING. INSJan 1, 1997 · N741SJ · Boeing 747246F · Engine (Turbine/Turboprop)SDR 9627326627Tr Unit · malfunctionedDURING LANDING, ENGINE NR 1 REVERSER WOULD NOT STOW. DURING SECOND STOW ATTEMPT ENGINE NR 1 EXPERIENCED A COMPRESSOR STALL AND AUTO SHUTDOWN. MAINTENANCE INSPECTED ENGINE NR 1, OPS CHECK OF ENGINE AND REVERSER WAS PERFORMED. NO DISCREPANCIES NOTED.Dec 30, 1996 · N627US · Boeing 747251B · Engine Thrust ReverserSDR P5CA9601249Engine · low powerREJECTED TAKEOFF, NR 1 ENGINE UNABLE TO REACH TAKEOFF POWER, CHARTED 1.58 COULD ONLY ACHIEVE 1.47 ALL OTHER PARAMETERS NORMAL, EXCEPT FOR N1 NR 1 ENGINE 94 PERCENT NR 4 ENGINE 99 PERCENT. REMOVED AND REPLACED NR 1 ENGINE FUEL FILTER, NO DEFECTS NOTED PER M/M Dec 18, 1996 · N920FT · Boeing 747249F · Engine (Turbine/Turboprop)SDR 9626536635Connector · looseDURING TAKEOFF, THE NR 4 ENGINE EGT INDICATOR WAS ERRATIC. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE FOUND INDICATOR CANNON PLUG LOOSE. CLEANED AND TIGHTENED THE CANNON PLUG, RUN-UP WAS NORMAL AND THE AIRCRAFT RETURNED TO SERDec 17, 1996 · N635US · Boeing 747227B · Engine EGT/TIT Indicating SystemSDR P5CA9601163Bleed Control · leakingAT FL 370 -33 TAT -61 SAT NR 1, ENGINE EPR 1.36, .85 N1, .845 N2 UNABLE TO OBTAIN CRUISE POWER. REMOVED AND REPLACED 3.5 BLEED CONTROL AND LINE FROM BLEED CONTROL TO CONNECTOR BLOCK. REPLACED SEAL AT FUEL LINE AT FUEL CONTROL UNIT TO 3.5 BLEED CONTROL. LEAKDec 14, 1996 · N920FT · Boeing 747249F · Compressor Bleed ControlSDR 9626046739Tcc Duct · blownDURING CLIMB, THE NR 1 ENGINE FIRE WARNING LIGHT ILLUMINATED. CREW SHUT DOWN THE NR 1 ENGINE AND DISCHARGED THE FIRE BOTTLE. AIRCRAFT RETURNED TO NRT AND LANDED WITHOUT INCIDENT. FOUND THE TURBINE CASE COOLING DUCT BLOWN. REPLACED THE NR 1 ENGINE, OPEATIONDec 4, 1996 · N639US · Boeing 747251F · Engine Cooling SystemSDR P5CA9600969Fuel Pump · failedLOST POWER ON NR 1 ENGINE, OIL PRESSURE LIGHT CAME ON, SHUT DOWN ENGINE. FOUND FUEL PUMP FAILED, METAL IN FUEL CONTROL UNIT, NO CONTAMINATION IN ENGINE VANE AND BLEED CONTROL FILTER. REPLACED FUEL PUMP, FUEL CONTROL AND TT2 SENSOR PER BOEING MAINTENANCE MANUNov 24, 1996 · N920FT · Boeing 747249F · Engine Fuel PumpSDR TWRA96358Angle Gearbox · leakingDURING CRUISE FLT LEVEL 330, NR 1 ENG OIL QTY, OIL PRESS DROP TO ZERO. OIL PRESS LIGHT CAME ON. ENG WAS SHUTDOWN IAW CHECKLIST. ENGINE WITH POSITIVE OIL PRESSURE. MAINTENANCE FOUND ANGLE GEAR BOX OIL SCAVENGE LINE FITTING LOOSE ON ANGLE GEAR BOX. REMOVED Nov 14, 1996 · N616FF · Boeing 747212B · Turbine Engine Accessory DriveSDR 9623076635Compressor · stalledDURING TAKEOFF ROTATION, THE NR 3 ENGINE EXPERIENCED TWO COMPRESSOR STALLS. AT THE TIME OF STALL, EGT ROSE TO 850 DEGREES CELSIUS FOR APPROXIMATELY FIVE MINUTES. EPR WAS 1.60 AND N1 AND N2 FLUCTUATED THEN DROPPED TO THE BOTTOM OF THE SCALE. CREW SHUT DOWN TOct 26, 1996 · N625US · Boeing 747227B · Turbine Engine Compressor SectionSDR 96ZZZM1546Fuel Contl · malfunctionDURING CRUISE, AT FL 390, NR 2 ENGINE EMITTED A LOW BOOMING NOISE FOLLOWED BY A RUMBLE AND VIBRATION. DECREASE IN EPR, N1, N2, EGT TO 300 DEGREES CELSIUS AND FUEL FLOW ZERO. ACCOMPLISHED ENGINE SHUT DOWN PER CHECKLIST. ATTEMPTED TWO RESTARTS, BOTH UNSUCCESSOct 23, 1996 · N616FF · Boeing 747212B · Fuel Control/Turbine EnginesSDR TWRA96344Fuel Pump · malfunctionDURING CRUISE, AT FL 390, NR 2 ENGINE EMITTED A LOW BOOMING NOISE FOLLOWED BY A RUMBLE AND VIBRATION. DECREASE IN EPR, N1, N2, EGT TO 300 DEGREES CELSIUS AND FUEL FLOW ZERO. ACCOMPLISHED ENGINE SHUT DOWN PER CHECKLIST. ATTEMPTED TWO RESTARTS, BOTH UNSUCCESSOct 23, 1996 · N616FF · Boeing 747212B · Engine Fuel PumpSDR 9620366635Controller · malfunctionedDURING TAKEOFF ROLLOUT, THE NR 2 ENGINE WOULD NOT REACH TAKEOFF EPR. CREW FOLLOWED COM PROCEDURE, ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE FOUND HIGH STAGE CONTROLLER COVER BLOWN OFF. REPLACED THE CONTROLLER AND PNEUMATIC PRESSURE RELIEF VALVE.Sep 21, 1996 · N635US · Boeing 747227B · Pneumatic Distribution SystemSDR 9619806615Connector · defectiveEN ROUTE, THE NR 1 ENIGNE OIL BYPASS FILTER LIGHT ILLUMINATED AT FL370. CREW FOLLOWED COM PROCEDURE, SHUT DOWN THE ENGINE AND FLIGHT CONTINUED TO NRT WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE ENGINE OIL FILTER AND A DEFECTIVE ELECTRICAL CONNECTOR D0Sep 16, 1996 · N615US · Boeing 747251B · Engine Oil Indicating SystemSDR 9619776623Evbc · malfunctionedEN ROUTE, THE NR 1 ENGINE EXPERIENCED TOP OF DESCENT COMPRESSOR STALL AND FLAME-OUT. CREW FOLLOWED COM PROCEDURE, RESTARTED ENGINE AT FL290, AND CONTINUED FLIGHT TO KIX WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED EVBC AND TRIMMED ENGINE.Sep 15, 1996 · N623US · Boeing 747251B · Compressor Bleed ControlSDR 9619726633Wire · shortedDURING TAKEOFF AND APPLICATION OF POWER, THE NR 1 EGT FLUCTUATES OFF SCALE. TAKEOFF WAS ABORTED AT 60 KTS AND AIRCRAFT RETURNED TO THE GATE. MAINTENANCE FOUND OPEN WIRE JUST AFT OF THE MAIN GEAR BOX. REPAIR WAS MADE AND ENGINE RUN-UP CHECK WAS NORMAL.Sep 10, 1996 · N633US · Boeing 747251B · Engine Indicating System WiringSDR 9617946623Fan Blade · failedDURING CLIMBOUT OF NRT, THE NR 2 ENIGNE EXPERIENCED A COMPRESSOR STALL AND SUBSEQUENT VIBRATION OF THE ENGINE. CREW SHUT DOWN THE ENGINE AND RETURNED TO NRT WITHOUT FURTHER INCIDENT. INSPECTION OF THE ENGINE REVEALED NR 5 FAN BLADE BROKEN BELOW THE MID SPAN Aug 15, 1996 · N623US · Boeing 747251B · Turbine Engine Compressor SectionSDR TWRA96249Oil Line · looseDURING FLIGHT, ENGINE OIL PRESSURE LIGHT NR 1 FLICKERED, NR 1 OIL PRESSURE INDICATOR 30-40 PSI. NR 1 OIL QTY INDICATOR ZERO. SHUT DOWN ENGINE NR 1 IMMEDIATELY PER FM VOL NR 1, FLEW APPROX 1 HOUR 25 MINUTES WINDMILLING AT N1-28 PERCENT, N2-23 PERCENT, OIL PREJul 31, 1996 · N616FF · Boeing 747212B · Turbine Engine Oil SystemSDR 9616026615Fuel Pump · failedDURING DESCENT, THE NR 4 ENGINE ROLLED BACK TO IDLE WITH AUTO THROTTLE ON. CREW DECLARED AN EMERGENCY AS PRECAUTION AND MADE A THREE-ENGINE LANDING WITHOUT FURTHER INCIDENT. MAINTENANCE REPLACED THE FUEL FLOW PUMP AND FUEL CONTROL. PERFORMED LEAK AND OPERATJul 25, 1996 · N615US · Boeing 747251B · Engine Fuel PumpSDR 9608636739Engine · failedDURING CLIMBOUT, THE NR 2 ENGINE EXPERIENCED TWO COMPRESSOR STALLS AT FL 200, FOLLOWED BY LOSS OF OIL PRESSURE AND QUANTITY. THE FIRE WARNING BELL THEN SOUNDED AND ILLUMINATED. CREW SHUTDOWN THE ENGINE PER COM PROCEDURES, DUMPED 140,000 LBS OF FUEL AND RETURApr 16, 1996 · N639US · Boeing 747251F · Engine (Turbine/Turboprop)SDR 9607286624Oil Syst · reqd serviceAFTER LANDING IN NRT AND SUBSEQUENT TAXIING, THE NR 1 ENGINE OIL TEMPERATURE INCREASED INTO CAUTION RANGE, THE OIL PRESSURE DECREASED TO CAUTION AS WELL. CREW FOLLOWED COCKPIT OPERATING MANUAL, SHUTDOWN NR 1 ENIGNE AND FLIGHT CONTINUED TO GATE WITHOUT FURTHERMar 31, 1996 · N624US · Boeing 747251B · Turbine Engine Oil SystemSDR 9604256615Fuel Control · malfunctionedDURING TAKEOFF, THE NR 2 ENGINE FAILED TO REACH TAKEOFF POWER. CREW ABORTED TAKEOFF AT 60 KNOTS AND RETURNED TO THE GATE. FOUND HYDRAULIC STAGE PRESSURE TO BE ZERO. REPLACED FUEL CONTROL AND FUEL PUMP. THE NR 2 ENGINE HIGH POWER RUNUP CHECK WAS NORMAL AND Feb 19, 1996 · N616US · Boeing 747251B · Fuel Control/Turbine EnginesSDR 9603616740Engine · low powerDURING TAKEOFF ROLL, THE NR 3 ENGINE FAILED TO OBTAIN TAKEOFF POWER. TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE CHECKED INLET, EXHAUST, AND PS4 LINES TO CONTROL FOR SECURITY. ALSO, CHECKED EVC FEEDBACK CABLE TO 3.0 BLEED AND RAN Feb 11, 1996 · N640US · Boeing 747251F · Engine (Turbine/Turboprop)SDR TWRA9608Lever · brokenON APPROACH TO BOMBAY, NR 3 ENGINE STALLED, EGT REACHED 735 DEGREES FOR 30 SECONDS. OIL PRESSURE 4 PSI WINDMILL HYDRAULIC PRESSURE AVAILABLE WITHOUT ADP. ACCOMPLISHED ENGINE FAILURE PROCEDURES. FOUND EVBC ROD CONNECT LEVER BROKEN. REPLACED LEVER, R/U OK. Feb 10, 1996 · N618FF · Boeing 747212B · Compressor Bleed ControlSDR 9600336628Turbine · failedDURING CLIMB, THE NR 2 ENGINE FIRE WARNING ILLUMINATED. CREW FOLLOWED COCKPIT OPERATING MANUAL, FIRED BOTTLE, IFSD AND SUBSEQUENTLY DUMPED 147,000 LBS OF FUEL AND RETURNED TO LAX. MAINTENANCE FOUND NR 2 ENGINE TURBINE EXHAUST CASE UNCONTAINED FAILURE. REPLAJan 5, 1996 · N628US · Boeing 747251B · Turbine SectionSDR 9519296740Engine · flamed-outNR 1 ENGINE FLAMED-OUT AT TOP OF CLIMB WHEN POWER WAS REDUCED. A RELIGHT WAS SUCCESSFUL AND THE FLIGHT CONTINUED ON TO AN UNEVENTFUL LANDING AT TPE. NO FUEL WAS DUMPED. THE ENGINE WAS INSPECTED, BORESCOPED AND A GROUND RUNUP CONFIRMED PROPER ENGINE OPERATIONov 25, 1995 · N640US · Boeing 747251F · Engine (Turbine/Turboprop)SDR 9518266628Duct · failedDURING ROTATION, THE NR 2 ENGINE FIRE WARNING ILLUMINATED, NACELLE TEMPERATURES PEGGED AND THE THRUST LEVER WOULD NOT REDUCE POWER. A FIRE BOTTLE WAS DISCHARGED, THE ENGINE WAS SHUTDOWN, AND ALL TEMPERATURES RETURNED TO NORMAL, 100,000 LBS OF FUEL WAS DUMPED Nov 16, 1995 · N628US · Boeing 747251B · Pneumatic Distribution SystemSDR 9517956633Engine · failedAT TOP OF DESCENT WHEN THE THROTTLES WERE RETARDED, THE NR 3 ENGINE EXPERIENCED A FLAME-OUT. A RELIGHT ATTEMPT WAS UNSUCCESSFUL. THE AIRCRAFT CONTINUED TO AN UNEVENTFUL THREE ENGINE LANDING AT NRT, NO FUEL WAS DUMPED. METAL PARTICLES FROM THE FUEL PUMP WERENov 11, 1995 · N633US · Boeing 747227B · Engine (Turbine/Turboprop)SDR 9517786622Tr Light · illuminatedDURING CLIMB, THE NR 1 ENGINE REVERSER UNLOCK LIGHT ILLUMINATED. ACFT DUMPED 90,000 LBS OF FUEL AND FLIGHT DIVERTED TO MSP WHERE THE REVERSER WAS LOCKED OUT AND PLACED ON MEL.Nov 8, 1995 · N622US · Boeing 747251B · Engine Thrust ReverserSDR 9517056622Fire Warning · activatedDURING CLIMB, THE NR 3 ENGINE EXPERIENCED HIGH NACELLE TEMPERATURES FOLLOWED BY A FIRE WARNING. POWER WAS REDUCED TO IDLE AND THE NACELLE TEMPERATURES RETURNED TO NORMAL. THE ENGINE WAS SHUT DOWN AND THE AIRCRAFT RETURNED TO NRT WHERE AN UNEVENTFUL THREE-ENGOct 31, 1995 · N622US · Boeing 747251B · Fire DetectionSDR 9516626740Fan Exit Liner · detachedDURING CLIMB, THE NR 1 ENGINE EXPERIENCED A VIBRATION WHICH CONTINUED DOWN TO IDLE AND THE ENGINE WAS SHUTDOWN. DUMPED 60,000 LBS OF FUEL AND THE AIRCRAFT RETURNED TO ANC WHERE AN UNEVENTFUL THREE ENGINE LANDING WAS MADE. INSPECTION FOUND A PORTION OF THE FAOct 24, 1995 · N640US · Boeing 747251F · Turbine Engine Compressor SectionSDR SRAA109509Engine · bird strikeON TAKEOFF ROLL FOR FLIGHT DLH8622 OUT OF FRANKFURT, NR 4 ENGINE HAD BIRD STRIKE SUBSEQUENTLY CAUSING IT TO STALL. REJECTED TAKEOFF AT 100KTS WHICH CAUSED 8 TIRES TO THERMAL. PERFORMED BIRD STRIKE INSPECTION AND HIGH ENERGY STOP INSPECTION PER BOEING CHAP 5-5Oct 12, 1995 · N740SJ · Boeing 747246F · Engine (Turbine/Turboprop)SDR 9514926627Bleed Valve · malfunctionedDURING CLIMB, THE NR 3 ENGINE NACELLE TEMPERATURE PEAKED AND THE ENGINE FIRE WARNING ACTIVATED. THE ENGINE WAS SHUTDOWN, THE FIRE BOTTLES WERE DISCHARGED, AND THE AIRCRAFT RETURNED TO NRT WHERE AN UNEVENTFUL LANDING WAS ACCOMPLISHED. THE HIGH STAGE BLEED VALSep 29, 1995 · N627US · Boeing 747251B · Compressor Bleed ValveSDR 9509526626Engine · failedDURING CLIMB, THE NR 3 ENGINE DEVELOPED LOW EPR, N1 AND FUEL FLOW WITH HIGH EGT. THE ENGINE HAD NO RESPONSE TO POWER LEVER MOVEMENT. THE AIRCRAFT BEGAN A RETURN TO NRT, DUMPING 170,000 LBS OF FUEL. DURING DESCENT, THE ENGINE EXPERIENCED A COMPRESSOR STALL AJun 16, 1995 · N626US · Boeing 747251B · Engine (Turbine/Turboprop)SDR 9508686622Start Valve · failedDURING DESCENT AT FL240, THE NR 3 ENGINE START VALVE LIGHT ILLUMINATED. THE ENGINE WAS SHUTDOWN AND THE AIRCRAFT CONTINUED TO MSP WHERE AN UNEVENTFUL THREE ENGINE LANDING WAS ACCOMPLISHED. THE START VALVE AND PRESSURE SWITCH WERE REPLACED AND THE SYSTEM OPERMay 27, 1995 · N622US · Boeing 747251B · Engine Start Valves/Controls
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