# Service difficulty reports: Pratt & Whitney JT9D-20 A list on [Pratt & Whitney JT9D-20](https://openairdocs.org/engine/pratt-whitney-jt9d-20.md). Newest first. General aviation reporting is voluntary. Page 1 of 3 · 103 reports - [SDR EIA2006239](https://openairdocs.org/sdr/EIA2006239.md): Fuel Control · malfunctioned · Oct 4, 2006 · N479EV · Boeing 747132 · Fuel Control/Turbine Engines > AT TOP OF DESCENT NR 1 ENGINE WOULD NOT RESPOND TO THRUST LEVER INPUT ABOVE IDLE POSITION, SHUTDOWN USING IN-FLIGHT ENGINE FAILURE AND SHUTDOWN. COULD NOT DUPLICATE ON THE GROUND, ALL TROUBLESHOOTING SHOWED NO DEFECTS IAW 71-00-42. DID A PRECAUTIONARY, REMOV - [SDR EIA2006040](https://openairdocs.org/sdr/EIA2006040.md): Wire · broken · Mar 31, 2006 · N471EV · Boeing 747273C · Overheat Detection > DURING CRUISE AT FL 310, NR 3 ENGINE SHUTDOWN DUE TO WING OVERHEAT INDICATION, UNABLE TO CLOSE PYLON VALVE NR 3. NACELLE SENSOR S1048 WITH BROKEN WIRES REPAIRED PER STD MAINT. PRACTICES. OPS CHK GOOD PER MM 26-18-00. PERFORMED ENGINE WINDMILL CHECK PER MM 7 - [SDR 0101951153](https://openairdocs.org/sdr/0101951153.md): Transmitter · malfunctioned · May 23, 2001 · N153US · Doug DC1040 · Engine RPM Indicating System > AT APPROXIMATELY 80 KTS ON TAKEOFF ROLL, THE NR 3 ENGINE FAIL LIGHT ILLUMINATED. THE CREW OBSERVED THE NR 3 N1 AND N2 INDICATIONS DECREASING AND ABORTED TAKEOFF AT 100 KTS. THE EPR INDICATION WAS REPORTED AS NORMAL. MAINTENANCE REPLACED THE N1 TRANSMITTER A - [SDR 20001214SH005](https://openairdocs.org/sdr/20001214SH005.md): Fitting · loose · Nov 14, 2000 · N154US · Doug DC1040 · Engine Mount Section > NWA MECHANIC NOTICED GAP BETWEEN THE AFT MOUNT SUPPORT FITTING AND THE AFT ENGINE MOUNT FITTING ON THE NR 3 ENGINE DURING ENGINE INSTALLATION. INSPECTION OF ALL DC-10-40 FLEET OF THE ENGINE MOUNTS AT THE NEXT ''A'' CHECK OR WITHIN 500 FLIGHT HOURS. (X) - [SDR 0000991152](https://openairdocs.org/sdr/0000991152.md): Engine · stalled · Mar 22, 2000 · N152US · Doug DC1040 · Engine (Turbine/Turboprop) > DURING TAKEOFF ROLL AT 125 KTS, THE NR 2 ENGINE AUDIBLY AND VISIBLY COMPRESSOR STALLED. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED THE ENGINE PER TAFI INCLUDING A BOROSCOPE INSPECTION WITH NO DEFECTS NOTED. AN ENGIN - [SDR 0000791162](https://openairdocs.org/sdr/0000791162.md): Fcu · malfunctioned · Mar 1, 2000 · N162US · Doug DC1040 · Fuel Control/Turbine Engines > WHILE DESCENDING AT FL290, THE NR 2 ENGINE FLAMED OUT. THE ENGINE OUT CHECKLIST WAS COMPLETED AND THE ENGINE WAS RESTARTED. OPERATION FOR THE REMAINDER OF THE FLIGHT WAS NORMAL MAINTENANCE PERFORMED A BOROSCOPE INSPECTION WITH NO TROUBLE FOUND. THE FUEL CON - [SDR 0000231143](https://openairdocs.org/sdr/0000231143.md): Engine · malfunctioned · Jan 27, 2000 · N133JC · Doug DC1040 · Engine Pressure Ratio (EPR) > AT 110 KTS ON TAKEOFF ROLL, THE CREW ABORTED TAKEOFF FOR LOW EPR INDICATION ON THE NR 2 ENGINE. THE EPR DID NOT EXCEED 1.2 WITH THE POWER LEVER NEAR THE MECHANICAL STOP. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE DEFERRED THE NR 2 EPR INDICATION UNDER M - [SDR 9903141154](https://openairdocs.org/sdr/9903141154.md): Prbc Valve · malfunctioned · Aug 5, 1999 · N154US · Doug DC1040 · Compressor Bleed Valve > UPON POWER REDUCTION AT FL330, THE NR 1 ENGINE COMPRESSOR STALLED AND THEN FLAMED OUT. THE ENGINE WAS SECURED, AND RESTARTED NORMALLY AT FL300. ENGINE OPERAITON WAS NORMAL FOR THE REMAINDER OF THE FLIGHT. MAINTENANCE INSPECTED THE ENGINE PER TAFI WITH NO DE - [SDR 9901971149](https://openairdocs.org/sdr/9901971149.md): Compressor · stalled · Jun 1, 1999 · N149US · Doug DC1040 · Turbine Engine Compressor Section > AT 100 KTS DURING TAKEOFF ROLL, THE NR 1 ENGINE COMPRESSOR STALLED. THE CREW REPORTED A LOUD BANG AND OBSERVED FALLING N1 AND EGT OVERTEMPERATURE. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED THE ENGINE AND FOUND META - [SDR 9809551153](https://openairdocs.org/sdr/9809551153.md): Engine · failed · Jun 12, 1998 · N153US · Doug DC1040 · Engine (Turbine/Turboprop) > DURING CLIMB-OUT, THE NR 2 ENGINE LOW OIL PRESSURE WARNING LIGHT ILLUMINATED AND THE INDICATED OIL TEMPERATURE WAS INCREASING. THE ENGINE WAS SHUT DOWN. 50,000 LBS OF FUEL WAS DUMPED AND THE AIRCRAFT RETURNED TO LAX WITHOUT FURTHER DIFFICULTY. THE AIRCRAFT - [SDR 9809071157](https://openairdocs.org/sdr/9809071157.md): Compressor · stalled · May 10, 1998 · N157SU · Doug DC1040 · Turbine Engine Compressor Section > DURING TAKEOFF ROLL, THE NR 3 ENGINE COMPRESSOR STALLED WITH FLAMES REPORTED FROM THE TAILPIPE. THE TAKEOFF WAS ABORTED AT 25 KTS. THE EGT REACHED A MAXIMUM OF 800C AND THE ENGINE RECOVERED. MAINTENANCE INSPECTED THE ENGINE INCLUDING A BOROSCOPE WITH NO TRO - [SDR 9808621162](https://openairdocs.org/sdr/9808621162.md): Compressor · stalled · May 6, 1998 · N162US · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 3 ENGINE COMPRESSOR STALLED. THE EGT ROSE TO 880C BEFORE THE ENGINE WAS SHUT DOWN. MAINTENANCE INSPECTED THE ENGINE PER TAFI STALL PROCEDURE WITH NO TROUBLE FOUND. RABS CHECK WAS NOT ACCOMPLISHED AND TH - [SDR 9808211160](https://openairdocs.org/sdr/9808211160.md): Compressor · stalled · May 2, 1998 · N160US · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 3 ENGINE COMPRESSOR STALLED. THE EGT REACHED 800C BEFORE THE ENGINE WAS SHUT DOWN. MAINTENANCE INSPECTED THE ENGINE PER TAFI 71-00-00 WITH NO DEFECTS NOTED. THE THRUST REVERSER WAS PLACED ON MEL 78-1A U - [SDR 9806981152](https://openairdocs.org/sdr/9806981152.md): Compressor · stalled · Apr 20, 1998 · N152US · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 1 ENGINE COMPRESSOR STALLED. THE ENGINE WAS SHUT DOWN WITH THE EGT REACHING A MAXIMUM OF 940C. MAINTENANCE INSPECTED THE ENGINE WITH NO DEFECTS NOTED AND THE AIRCRAFT WAS RETURNED TO SERVICE. - [SDR 9806901162](https://openairdocs.org/sdr/9806901162.md): Compressor · stalled · Apr 17, 1998 · N162US · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT WHILE COMING OUT OF REVERSE THRUST AT 80 KTS, THE NR 3 ENGINE COMPRESSOR STALLED. EGT PEAKED AT 1000C BEFORE THE ENGINE WAS SHUT DOWN AND THE COM COMPLIED WITH. MAINTENANCE INSPECTED THE ENGINE PER MAINTENANCE MANUAL INCLUDING A BORESC - [SDR 9806741154](https://openairdocs.org/sdr/9806741154.md): Compressor · stalled · Apr 15, 1998 · N154US · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 1 ENGINE COMPRESSOR STALLED. EGT REACHED 930C BEFORE THE ENGINE WAS SHUT DOWN. MAINTENANCE INSPECTED THE ENGINE PER MAINTENANCE MANUAL AND RAN ENGINE TO TAKEOFF POWER WITH NO DEFECTS NOTED. THE AIRCRAFT - [SDR 9806761155](https://openairdocs.org/sdr/9806761155.md): Compressor · stalled · Apr 15, 1998 · N155US · Doug DC1040 · Turbine Engine Compressor Section > WHILE CLIMBING THRU 9500 FEET, THE NR 1 ENGINE COMPRESSOR STALLED. THE ENGINE WAS SHUT DOWN PER COM AND THE AIRCRAFT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED THE ENGINE PER MAINTENANCE AND TAFI MANUALS INCLUDING A BORESCOPE WITH NO - [SDR 9806421143](https://openairdocs.org/sdr/9806421143.md): Compressor · stalled · Apr 9, 1998 · N133JC · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 1 ENGINE COMPRESSOR STALLED. THE EGT ROSE TO 980C FOR THREE SECONDS BEFORE THE ENGINE WAS SHUT DOWN. A BORESCOPE WAS PERFORMED WITH NO DEFECTS NOTED. THE AIRCRAFT WAS REMOVED FROM SERVICE AND FERRIED TO - [SDR 9806431143](https://openairdocs.org/sdr/9806431143.md): Compressor · stalled · Apr 9, 1998 · N133JC · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 3 ENGINE COMPRESSOR STALLED. THE EGT ROSE TO 980C FOR THREE SECONDS BEFORE THE ENGINE WAS SHUT DOWN. A BORESCOPE WAS PERFORMED WITH NO DEFECTS NOTED. THE AIRCRAFT WAS REMOVED FROM SERVICE AND FERRIED TO - [SDR 9806391155](https://openairdocs.org/sdr/9806391155.md): Compressor · stalled · Apr 8, 1998 · N155US · Doug DC1040 · Turbine Engine Compressor Section > AT TOP OF DESCENT, THE NR 3 ENGINE COMPRESSOR STALLED WHEN THE POWER LEVER WAS RETARDED. THE ENGINE ROLLED BACK AND THE EGT BEGAN TO RISE. EGT CLIMBED TO 810C AND THE ENGINE WAS SHUT DOWN. THE COM PROCEDURE WAS FOLLOWED AND A SUCCESSFUL RESTART WAS ACCOMPLI - [SDR 9805731154](https://openairdocs.org/sdr/9805731154.md): Compressor · stalled · Mar 30, 1998 · N154US · Doug DC1040 · Turbine Engine Compressor Section > DURING THE LANDING ROLLOUT AT APPROXIMATELY 80 KNOTS WHILE IN REVERSE THRUST, THE NR 3 ENGINE COMPRESSOR STALLED. THE ENGINE WAS SHUT DOWN AT APPROXIMATELY 40 KNOTS WITH THE EGT AT MAXIMUM FOR 10 SECONDS. THE ENGINE WAS BOROSCOPED WITH NO DEFECTS NOTED. THE - [SDR 9804841143](https://openairdocs.org/sdr/9804841143.md): Engine · failed · Mar 20, 1998 · N133JC · Doug DC1040 · Engine (Turbine/Turboprop) > APPROXIMATELY 30 MINUTES AFTER TAKEOFF, THE NR 1 ENGINE OIL CLOG LIGHT ILLUMINATED. THE CREW FOLLOWED COM PROCEDURE AND SHUT DOWN THE ENGINE. FUEL WAS DUMPED AND THE AIRCRAFT RETURNED TO MSP WITHOUT DIFFICULTY. MAINTENANCE INSPECTED THE ENGINE AND THE AIRCR - [SDR 9803401154](https://openairdocs.org/sdr/9803401154.md): Compressor · stalled · Feb 24, 1998 · N154US · Doug DC1040 · Turbine Engine Compressor Section > AT TOP OF DESCENT FL330, THE NR 3 ENGINE COMPRESSOR STALLED. ENGINE ANTI-ICE AND FUEL HEAT WERE ON. THE EGT REACHED 870C BEFORE THE ENGINE WAS SHUT DOWN. THE ENGINE RESTARTED NORMALLY AND OPERATED WITHOUT FURTHER DIFFICULTY FOR THE REMAINDER OF THE FLIGHT. - [SDR 9803171157](https://openairdocs.org/sdr/9803171157.md): Tr Unit · malfunctioned · Feb 22, 1998 · N157US · Doug DC1040 · Engine Thrust Reverser > DURING LANDING ROLLOUT, THE NR 3 ENGINE THRUST REVERSER DID NOT STOW AND THE ENGINE COMPRESSOR STALLED. THE EGT REACHED 1000C AND THE ENGNE WAS SHUT DOWN. MAINTENANCE INSPECTED THE ENGINE AND DEFERRED THE REVERSER PER MEL 78-1A. THE REVERSER WAS STOWED AND - [SDR 9801951143](https://openairdocs.org/sdr/9801951143.md): Engine · malfunctioned · Jan 30, 1998 · N133JC · Doug DC1040 · Engine (Turbine/Turboprop) > DURING LANDING ROLLOUT AND WHILE IN REVERSE THRUST, THE NR 1 ENGINE EGT ROSE RAPIDLY TOWARD THE RED LINE LIMIT. THE ENGINE WAS SHUT DOWN BEFORE EXCEEDING ANY LIMITATIONS. MAINTENANCE INSPECTED THE ENGINE WITH NO DEFECTS NOTED. - [SDR 9801691152](https://openairdocs.org/sdr/9801691152.md): Compressor · stalled · Jan 27, 1998 · N152US · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT, THE NR 3 ENGINE COMPRESSOR STALLED. THE EGT REACHED 670C AND THE ENGINE WAS SHUT DOWN. THE CREW RESTARTED THE ENGINE WHILE TAXIING WITH ALL PARAMETERS NORMAL. MAINTENANCE PERFORMED A VISUAL INSPECTION OF THE ENGINE AND AN OPERATIONAL - [SDR 9801101152](https://openairdocs.org/sdr/9801101152.md): Compressor · stalled · Jan 18, 1998 · N152US · Doug DC1040 · Turbine Engine Compressor Section > AT TOP OF DESCENT WITH POWER REDUCTION, THE NR 1 ENGINE AUDIBLY COMPRESSOR STALLED. THERE WAS A SLIGHT VIBRATION AND RISING EGT. THE ENGINE WAS SHUT DOWN WITH A MAXIMUM EGT OF 690C. RESTART ATTEMPT WAS SUCCESSFUL AND THE ENGINE OPERATION WAS NORMAL FOR THE - [SDR 9801091145](https://openairdocs.org/sdr/9801091145.md): Engine · over temp · Jan 15, 1998 · N145US · Doug DC1040 · Engine (Turbine/Turboprop) > DURING THE LANDING ROLLOUT WHILE COMING OUT OF REVERSE THRUST, THE NR 3 ENGINE REACHED AN EGT OF 940C FOR ONE SECOND. THE ENGINE WAS SHUT DOWN. MAINTENANCE PERFORMED AN OVERTEMP INSPECTION PER MM 72-00-00, PG 233 WITH NO DEFECTS. THE BORESCOPE WAS DEFERRED - [SDR 9800521155](https://openairdocs.org/sdr/9800521155.md): Compressor · stalled · Jan 11, 1998 · N155US · Doug DC1040 · Turbine Engine Compressor Section > AFTER STARTING DESCENT FROM FL330, THE NR 2 ENGINE COMPRESSOR STALLED. POWER WAS REDUCED TO IDLE AND AFTER EGT REACHING 820C THE ENGINE RECOVERED. WHILE DESCENDING FROM FL290, THE NR 2 ENGINE STALLED AGAIN WITH MAX EGT OF 760. THE CREW FOLLOWED COM PROCEDUR - [SDR 9800201155](https://openairdocs.org/sdr/9800201155.md): Compressor · stalled · Jan 4, 1998 · N155US · Doug DC1040 · Turbine Engine Compressor Section > DURING DESCENT, THE NR 3 ENGINE COMPRESSOR STALLED AND EXPERIENCED A FLAME-OUT. MAXIMUM EGT REACHED WAS 830C. THE CREW FOLLOWED COM PROCEDURES AND RESTART WAS SUCCESSFUL. THE ENGINE OPERATED NORMALLY FOR THE REMAINDER OF THE FLIGHT. MAINTENANCE INSPECTED T - [SDR 9724571150](https://openairdocs.org/sdr/9724571150.md): Epr Indication · inoperative · Dec 31, 1997 · N150US · Doug DC1040 · Engine Pressure Ratio (EPR) > DURING TAKEOFF AT APPROXIMATELY 60 KTS, THE NR 1 ENGINE EPR INDICATION BECAME INOPERATIVE. ALL OTHER ENGINE INDICATIONS WERE NORMAL. THE TAKEOFF WAS ABORTED. THE NR 1 EPR INDICAITON WAS PLACED ON MEL 77-3 AND THE FLIGHT CONTINUED WITHOUT INCIDENT. - [SDR 9724451151](https://openairdocs.org/sdr/9724451151.md): Compressor · stalled · Dec 24, 1997 · N151US · Doug DC1040 · Turbine Engine Compressor Section > AFTER TOUCHDOWN, WHILE IN REVERSE THRUST, THE NR 1 ENGINE COMPRESSOR STALLED. EGT ROSE TO 900C AND THE ENGINE WAS SHUTDOWN. MAINTENANCE INSPECTED THE ENGINE WITH NO DEFECTS FOUND. ENGINE RUN AND RAB'S SYSTEM CHECK WERE NORMAL. - [SDR 9723141143](https://openairdocs.org/sdr/9723141143.md): Compressor · stalled · Dec 11, 1997 · N133JC · Doug DC1040 · Turbine Engine Compressor Section > DURING THE APPLICATION OF TAKEOFF THRUST, THE NR 3 ENGINE COMPRESSOR STALLED. MAX EGT WAS 880C AND THE TAKEOFF WAS ABORTED. MAINTENANCE INSPECTED THE ENGINE PER MM 71-00-00 WITH NO DEFECTS NOTED. THE BOROSCOPE WAS DEFERRED. SUBSEQUENT ENGINE RUN WAS NORMAL - [SDR 9722961143](https://openairdocs.org/sdr/9722961143.md): Compressor · stalled · Dec 7, 1997 · N133JC · Doug DC1040 · Turbine Engine Compressor Section > WHILE DESCENDING THRU FL350 AND REDUCING POWER, THE NR 3 ENGINE COMPRESSOR STALLED. THE EGT ROSE RAPIDLY TO 700C AND THE ENGINE WAS SHUT DOWN. ALL OTHER ENGINE INDICATIONS WERE NORMAL AND A SUCCESSFUL RESTART WAS ACCOMPISHED. MAINTENANCE BORESCOPED THE ENGI - [SDR EIAA970208](https://openairdocs.org/sdr/EIAA970208.md): Compressor · stalled · Nov 12, 1997 · N485EV · Boeing 747212B · Turbine Engine Compressor Section > HEC - AS POWER WAS REDUCED TO CRUISE AT FL 410 NR 3 ENGINE HAD A COMPRESSOR STALL, EGT 10 1040 C FOR FIVE SECONDS BEFORE SHUTDOWN. ENGINE INSPECTED IAW 71-00-45, BORESCOPED IAW 72-00-00. WINDMILLED INSPECTION IAW 72-00-00. TANDOM BLEED CHECK IAW 71-00-00, E - [SDR 9720781157](https://openairdocs.org/sdr/9720781157.md): Compressor · stalled · Nov 5, 1997 · N157US · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT WHILE COMING OUT OF REVERSER THRUST, THE NBR 1 ENGINE COMPRESSOR STALLED. THE EGT ROSE TO 850C AND THE ENGINE WAS SHUT DOWN. THE CREW STATED THERE WAS A TAIL CROSSWING DURING LANDING. MAINTENANCE INSPECTED THE ENGINE WITH NO DEFECTS N - [SDR 9720181150](https://openairdocs.org/sdr/9720181150.md): Compressor · stalled · Oct 27, 1997 · N150US · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 2 ENGINE COMPRESSOR STALLED. THE EGT ROSE TO 950C AND THE ENGINE WAS SHUT DOWN. MAINTENANCE PERFORMED A BORESCOPE, CHECKED THE RABS OPERATION AND THE FUEL PUMP PRESSURE WITH ALL CHECKING NORMAL. - [SDR 9720191150](https://openairdocs.org/sdr/9720191150.md): Compressor · stalled · Oct 27, 1997 · N150US · Doug DC1040 · Turbine Engine Compressor Section > DURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 3 ENGINE COMPRESSOR STALLED. EGT ROSE TO 950C AND THE ENGINE WAS SHUT DOWN. MAINTENANCE INSPECTED THE ENGINE INCLUDING A BORESCOPE AND FOUND NO DEFECTS. THE RABS SYSTEM AND FUEL PUMP CHECKED NORMAL. - [SDR 9719831141](https://openairdocs.org/sdr/9719831141.md): Fuel Control · malfunctioned · Oct 21, 1997 · N141US · Doug DC1040 · Fuel Control/Turbine Engines > WHILE DESCENDING THRU FL350, THE NR 3 ENGINE EGT ROSE TO 880C. THE ENGINE WAS SHUT DOWN. THE SECOND RESTART ATTEMPT WAS SUCCESSFUL WITH NORMAL OPERATION FOR THE REMAINDER OF THE FLIGHT. MAINTENANCE BORESCOPED THE ENGINE WITH NO DEFECTS NOTES. THE FUEL CONT - [SDR 9718781143](https://openairdocs.org/sdr/9718781143.md): Compressor · stalled · Oct 5, 1997 · N133JC · Doug DC1040 · Turbine Engine Compressor Section > AT TOP OF DESCENT FL280, THE NR 1 ENGINE EXPERIENCED A COMPRESSOR STALL WITH EGT RISING TO 900C. THE ENGINE WAS SHUT DOWN AND TWO RESTART ATTEMPTS WERE UNSUCCESSFUL. MAINTENANCE INSPECTED THE ENGINE PER MM 71-00-00 FOR TOP OF DESCENT STALL WITH NO DEFECTS N - [SDR 9718791157](https://openairdocs.org/sdr/9718791157.md): Bleed Duct · damaged · Oct 5, 1997 · N157US · Doug DC1040 · Pneumatic Distribution System > AT ROTATION, THE NR 1 ENGINE FIRE LIGHT ILLUMINATED FOLLOWED BY THE REVERSER UNLOCK LIGHT. WITH POWER REDUCED TO IDLE ON THE NR 1 ENGINE, THE FIRE LIGHT WENT OUT. FUEL WAS DUMPED AND THE AIRCRAFT RETURNED WITHOUT INCIDENT. MAINTENANCE FOUND AN ENGINE BLEED - [SDR 9717821154](https://openairdocs.org/sdr/9717821154.md): Engine · failed · Sep 20, 1997 · N154US · Doug DC1040 · Engine (Turbine/Turboprop) > DURING CRUISE, THE NR 1 ENGINE EGT CLIMBED AT LEAST 100 CELSIUS ABOVE THE OTHER ENGINES. ALL OTHER INDICATIONS WERE NORMAL. THE FLIGHT DIVERTED TO MSP AS A PRECAUTION. THE ENGINE FAILED A BORESCOPE INSPECTION AND WAS REPLACED. - [SDR 9715651151](https://openairdocs.org/sdr/9715651151.md): Compressor · stalled · Aug 18, 1997 · N151US · Doug DC1040 · Turbine Engine Compressor Section > ON INITIAL POWER UP FOR TAKEOFF, THE NR 3 COMPRESSOR STALLED, MAX EGT WAS 600C AND EPR WAS 1.18. THE TAKEOFF WAS ABORTED AT 20 KNOTS. MAINTENANCE INSPECTED THE ENGINE PER MM 71-00-00 FOR A CONDITION 1 TYPE 'A' STALL WITH NO DEFECTS NOTED. THERE WAS A 90 DEG - [SDR 9715571161](https://openairdocs.org/sdr/9715571161.md): Engine · failed · Aug 14, 1997 · N161US · Doug DC1040 · Engine (Turbine/Turboprop) > WHILE CLIMBING THRU 2000 FEET AFTER TAKEOFF, THE NBR 2 ENGINE EGT WENT OFF SCALE HIGH AND EPR DROPPED. ENGINE WAS SHUT DOWN AND 55,000 LBS OF FUEL WAS DUMPED. AIRCRAFT RETURNED TO DEPARTURE AIRPORT WITHOUT INCIDENT. MAINTENANCE INSPECTED ENGINE WITH NO DEFE - [SDR 9713421157](https://openairdocs.org/sdr/9713421157.md): Compressor · stalled · Jul 9, 1997 · N157US · Doug DC1040 · Turbine Engine Compressor Section > WHEN NR 2 ENGINE POWER ADVANCED TO 1.2 EPR AND STABLE FOR A CROSSBLEED START, THE NR 2 ENGINE COMPRESSOR STALLED. EGT WAS RISING THROUGH 680 CELSIUS WHEN THE ENGINE WAS SHUT DOWN. MAINTENANCE INSPECTED ENGINE PER MM 71-00-00 FOR STALL WITH NO DEFECTS NOTED. - [SDR 9711981157](https://openairdocs.org/sdr/9711981157.md): Egt Indication · rising · Jun 19, 1997 · N157US · Doug DC1040 · Engine EGT/TIT Indicating System > ON LANDING ROLLOUT WHILE COMING OUT OF REVERSE THRUST, THE NR 3 ENGINE EGT STARTED RISING RAPIDLY. THE ENGINE WAS SHUT DOWN WITH A MAX EGT OF 650C. MAINTENANCE CHECKED REVERSER OPERATION PER MM 78-30-00, WITH NO DEFECTS NOTED. EGT WAS WITHIN LIMITS PER MM 7 - [SDR 9710681152](https://openairdocs.org/sdr/9710681152.md): Prbc · failed · Jun 3, 1997 · N152US · Doug DC1040 · Compressor Bleed Valve > DURING DESCENT, THE NR 2 ENGINE COMPRESSOR STALLED WITH RISING EGT. ENGINE WAS SHUT DOWN AT MAX EGT OF 650C. NR 2 ENGINE RESTART AND SUBSEQUENT OPERATION WERE NORMAL. MAINTENANCE REPLACED THE PRBC AND RAN ENGINE TO TAKEOFF POWER. ALL PARAMETERS WERE NORMAL - [SDR 9710211143](https://openairdocs.org/sdr/9710211143.md): Engine · malfunctioned · May 24, 1997 · N133JC · Doug DC1040 · Engine (Turbine/Turboprop) > NR 1 ENGINE EGT ROSE RAPIDLY AFTER THE REVERSER WAS STOWED. ENGINE WAS SHUTDOWN, EGT PEAKED AT 780 CELSIUS. MAINTENANCE RAN NR 1 ENGINE, OPERATED REVERSER AND ALL INDICATIONS WERE NORMAL. - [SDR 9709631155](https://openairdocs.org/sdr/9709631155.md): Tr Unit · malfunctioned · May 1, 1997 · N155US · Doug DC1040 · Engine Thrust Reverser > WHEN POWER PUSHED UP TO TAKEOFF LEVEL, THE NR 3 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. AIRCRAFT RETURNED TO THE GATE AND MAINTENANCE DEFERRED NR 3 THRUST REVERSER PER MEL 78-1A. SPECIFIC PART CAUSING PROBLEM TO BE DETERMINED. - [SDR 9707731154](https://openairdocs.org/sdr/9707731154.md): Bleed Solenoid · malfunctioned · Apr 18, 1997 · N154US · Doug DC1040 · Compressor Bleed Control > AFTER LANDING, WHILE COMING OUT OF REVERSE THRUST, NR 2 ENGINE EGT ROSE RAPIDLY. NR 2 ENGINE WAS SHUT DOWN. MAINTENANCE INSPECTED ENGINE PER MM 72-00-00, PG 227 AND REPLACED BLEED OVERRIDE SOLENOID. THE NR 2 ENGINE WAS GROUND RUN AND CHECKED OK. Next page: https://openairdocs.org/engine/pratt-whitney-jt9d-20/reports.md?page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 = 'JT9D20' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/pratt-whitney-jt9d-20/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.