# Pratt & Whitney JT9D-20J - Type: Engine model (FAA registry) - Registry code: 51548 - Manufacturer (registry): P & W - Model: JT9D-20J - Engine type: Turbo-fan - Power: 48,050 lb thrust - Data sheet: [TCDS E20EA](https://openairdocs.org/tcds/E20EA) (OpenAirDocs) - Holder: Pratt & Whitney - Installed in: 0 registered aircraft - Page: https://openairdocs.org/engine/pratt-whitney-jt9d-20j Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2021-09-10](https://openairdocs.org/ad/2021-09-10): Turbine Engine Compressor Section · Pratt & Whitney JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective May 27, 2021 - [AD 2004-10-01](https://openairdocs.org/ad/2004-10-01): 6th Stage Low Pressure Turbine (LPT) Air Seals · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 6 more. Effective Jun 15, 2004 - [AD 2000-23-14](https://openairdocs.org/ad/2000-23-14): No. 4 Bearing Area · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 11 more. Effective Jan 19, 2001 - [AD 99-15-02](https://openairdocs.org/ad/99-15-02): Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 6 more. Effective Aug 16, 1999 - [AD 96-25-10](https://openairdocs.org/ad/96-25-10): Design Turbine Exhaust Case · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective Feb 18, 1997 - [AD 93-19-02 R1](https://openairdocs.org/ad/93-19-02-R1): Diffuser Cases · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 6 more. Effective Oct 17, 1994 - [AD 94-15-16](https://openairdocs.org/ad/94-15-16): Engine Control System Accessories · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 9 more. Effective Oct 14, 1994 - [AD 90-23-19](https://openairdocs.org/ad/90-23-19): Air Seal · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 13 more. Effective Nov 23, 1990 - [AD 78-16-05](https://openairdocs.org/ad/78-16-05): Sixth Stage Turbine Disks · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective Sep 12, 1978 - [AD 76-24-03](https://openairdocs.org/ad/76-24-03): Fan Blades · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective Dec 30, 1976 - [AD 76-12-03](https://openairdocs.org/ad/76-12-03): Sixth Stage Turbine Disk · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective Jun 22, 1976 - [AD 73-16-05](https://openairdocs.org/ad/73-16-05): Fourth and Fifth Stage Turbine Discs · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective Aug 15, 1973 Historical (superseded or no longer in force): - [AD 2012-04-15](https://openairdocs.org/ad/2012-04-15) (historical): Engine · Pratt & Whitney Division JT9D-20J, JT9D-3A, JT9D-59A and 16 more. Effective Apr 23, 2012 - [AD 2007-05-17](https://openairdocs.org/ad/2007-05-17) (historical): Airworthiness Limitations Section (ALS) · Pratt & Whitney Division JT9D-20J, JT9D-3A, JT9D-7 and 15 more. Effective Apr 12, 2007 - [AD 2002-08-11](https://openairdocs.org/ad/2002-08-11) (historical): Airworthiness Limitations Section (ALS) - Critical Life-Limited Parts · Pratt & Whitney Division JT9D-20, JT9D-20J, JT9D-3A and 17 more. Effective May 28, 2002 - [AD 99-08-12](https://openairdocs.org/ad/99-08-12) (historical): Maintenance Program, Mandatory Inspections · Pratt & Whitney Division JT9D-20J, JT9D-3A, JT9D-59A and 16 more. Effective May 13, 1999 ## Registered aircraft None registered with this engine model now. ## NTSB investigations None matched to aircraft with this engine model. ## FAA accident and incident reports None matched to aircraft with this engine model. ## Service difficulty reports (76, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 0101331147](https://openairdocs.org/sdr/0101331147), Apr 4, 2001: CLAMP. FAILED. WHILE IN CRUISE AT FL260, THE NR 2 ENGINE FIRE WARNING ACTIVATED. THE ENGINE WAS SECURED PER COM AND ONE FIRE BOTTLE WAS DISCHARGED. AN EMERGENCY WAS DECLARED W - [SDR 0100571158](https://openairdocs.org/sdr/0100571158), Feb 16, 2001: ENGINE. LEAKING. DURING CLIMB AFTER TAKEOFF, THE CREW REPORTED SMOKE ENTERING THE CABIN FROM A PNEUMATIC SOURCE. THE FLIGHT RETURNED TO LAX AND LANDED WITHOUT INCIDENT. MAINTENA - [SDR 9905091156](https://openairdocs.org/sdr/9905091156), Nov 26, 1999: ENGINE. MALFUNCTIONED. DURING DESCENT AT 12,000 FEET WHILE IN TURBULENCE, THE NR 2 ENGINE FLAMED OUT. THE RESTART ATTEMPT WAS SUCCESSFUL WITH ENGINE OPERATION NORMAL FOR THE REMAINDER - [SDR 9903391158](https://openairdocs.org/sdr/9903391158), Aug 9, 1999: POWER LEVER. OUT OF ADJUST. AFTER TOUCHDOWN WHEN REVERSE THRUST WAS APPLIED, THE NR 3 ENGINE DID NOT ACCELERATE. THE NR 2 ENGINE DEVELOPED MAXIMUM REVERSE THRUST WHILE THE NR 1 THRUST REVE - [SDR 9900501149](https://openairdocs.org/sdr/9900501149), Feb 11, 1999: DUCT. FAILED. DURING INITIAL CLIMB AFTER TAKEOFF AT APPROXIMATELY 2000 FT MSL, THE NR 2 ENGINE FIRE WARNING ANNUNCIATED. THE ENGINE WAS SHUT DOWN PER THE FIRE WARNING CHECK L - [SDR 9809561141](https://openairdocs.org/sdr/9809561141), Jun 16, 1998: FUEL LINE. CRACKED. WHILE AT CRUISE FL330, THE NR 2 ENGINE COMPRESSOR STALLED. ALL NR 2 PARAMETERS ROLLED BACK TO FLIGHT IDLE. THE ENGINE DID NOT RESPOND TO POWER LEVER INPUTS AND - [SDR 9809131149](https://openairdocs.org/sdr/9809131149), May 11, 1998: ENGINE. FLAMED OUT. WHILE IN CRUISE FLIGHT AT FL340, THE AIRCRAFT ENCOUNTERED MODERATE TURBULENCE, POSSIBLY WAKE TURBULENCE, AND THE NR 1 ENGINE FLAMED OUT. THE ENGINE WAS SECURED - [SDR 9808921141](https://openairdocs.org/sdr/9808921141), May 7, 1998: COMPRESSOR. STALLED. DURING THE LANDING ROLLOUT, THE NR 3 ENGINE COMPRESSOR STALLED WHILE IN REVERSE THRUST. THE EGT REACHED 970C BEFORE THE ENGINE WAS SHUT DOWN. MAINTENANCE PERFOR - [SDR 9807741160](https://openairdocs.org/sdr/9807741160), Apr 29, 1998: ENGINE. FLAMED OUT. AT TOP OF DESCENT FL330, THE NR 3 ENGINE FLAMED OUT. THE ENGINE WAS SUCCESSFULLY RESTARTED ON THE SECOND ATTEMPT. THE DESCENT AND LANDING WAS WITHOUT INCIDENT. - [SDR 9806911148](https://openairdocs.org/sdr/9806911148), Apr 16, 1998: TR UNIT. MALFUNCTIONED. DURING TAKEOFF ROLL, THE NR 2 ENGINE REVERSER UNLOCKED LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE PLACED THE - [SDR 9806751144](https://openairdocs.org/sdr/9806751144), Apr 15, 1998: COMPRESSOR. STALLED. AFTER LANDING WHILE CREW WAS ATTEMPTING TO RESTOW THE NR 3 ENGINE THRUST REVERSER, THE NR 3 ENGINE COMPRESSOR STALLED. EGT CLIMBED TO 820C AND THE ENGINE WAS SH - [SDR 9806411148](https://openairdocs.org/sdr/9806411148), Apr 9, 1998: TR UNIT. MALFUNCTIONED. WHEN ENGINE POWER WAS ADVANCED TO THE TAKEOFF SETTING, THE NR 2 ENGINE THRUST REVERESER UNLOCK INDICATION ILLUMINATED. THE TAKEOFF WAS ABORTED AT APPROXIMATELY - [SDR 9805721154](https://openairdocs.org/sdr/9805721154), Mar 30, 1998: COMPRESSOR. STALLED. DURING LANDING ROLLOUT AT APPROXIMATELY 80 KNOTS WHILE IN REVERSE THRUST, THE NR 2 ENGINE COMPRESSOR STALLED. THE ENGINE WAS SHUT DOWN AT APPROXIMATELY 40 KNOTS - [SDR 9804851148](https://openairdocs.org/sdr/9804851148), Mar 20, 1998: COMPRESSOR. STALLED. DURING THE LANDING ROLLOUT WHILE IN REVERSE THRUST AT 85 KTS, THE NR 3 ENGINE COMPRESSOR STALLED. THE EGT ROSE TO 900C BEFORE THE ENGINE WAS SHUT DOWN. MAINTENA - [SDR 9803411147](https://openairdocs.org/sdr/9803411147), Feb 24, 1998: ENGINE. FAILED. DURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 1 ENGINE COMPRESSOR STALLED. THE AIRPORT TOWER REPORTED SMOKE FROM THE TAILPIPE OF THE NR 1 ENGINE. THE E - [SDR 9803131144](https://openairdocs.org/sdr/9803131144), Feb 22, 1998: COMPRESSOR. STALLED. DURING CRUISE AT FL370, THE NR 2 ENGINE COMPRESSOR STALLED, EGT ROSE TO 940C AND THE ENGINE WAS SHUT DOWN. A RESTART ATTEMPT AT FL330 WAS SUCCESSFUL AND THE ENG - [SDR 9802281160](https://openairdocs.org/sdr/9802281160), Feb 7, 1998: TR UNIT. MALFUNCTIONED. DURING LANDING ROLL AND WHILE COMING OUT OF REVERSE THRUST, THE NR 2 ENGINE THRUST REVERSER REMAINED DEPLOYED. THE CREW ATTEMPTED TO RECYCLE THE REVERSER AND A - [SDR 9801791156](https://openairdocs.org/sdr/9801791156), Jan 26, 1998: ACTUATOR. OUT OF ADJUST. ON TAKEOFF ROLL AT APPROXIMATELY 60 KNOTS, THE NR 3 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GA - [SDR 9800421154](https://openairdocs.org/sdr/9800421154), Jan 7, 1998: BYPASS SWITCH. FAILED. DURING CLIMBOUT, THE NR 1 ENGINE OIL FILTER BYPASS WARNING LIGHT ILLUMINATED FOR ONE MINUTE. ALL OTHER INDICATIONS WERE NORMAL AND THE LIGHT EXTINGUISHED WITH N - [SDR 9724251160](https://openairdocs.org/sdr/9724251160), Dec 22, 1997: COMPRESSOR. STALLED. 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 - [SDR 9723231141](https://openairdocs.org/sdr/9723231141), Dec 15, 1997: ENGINE. FAILED. DURING CLIMB, THE CREW OBSERVED SPARKS EXITING FROM THE REAR OF THE NR 3 ENGINE EVERY 15 TO 20 SECONDS. ALL ENGINE INSTRUMENTS INDICATED NORMAL AND NO VIBRATION - [SDR 9723131161](https://openairdocs.org/sdr/9723131161), Dec 4, 1997: START VALVE. MALFUNCTIONED. DURING CRUISE, THE NR 1 ENGINE START VALVE OPEN LIGHT ILLIMINATED. CREW FOLLOWED COM PROCEDURE AND THEN DIVERTED TO BOS FOR MAINTENANCE. START VALVE WAS FOUND I - [SDR 9722511146](https://openairdocs.org/sdr/9722511146), Dec 3, 1997: TR UNIT. MALFUNCTIONED. ON TAKEOFF ROLL AS POWER WAS APPLIED, THE NR 1 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. TAKEOFF WAS ABORTED AT APPROXIMATELY 30 KTS AND THE AIRCRAFT RET - [SDR 9722411160](https://openairdocs.org/sdr/9722411160), Dec 2, 1997: COMPRESSOR. STALLED. DURING LANDING ROLLOUT, THE NR 3 ENGINE COMPRESSOR STALLED, EGT REACHED 1000C FOR 1 TO 2 SECONDS BEFORE THE ENGINE WAS SHUT DOWN. MAINTENANCE DEACTIVATED THE TH - [SDR 9722521144](https://openairdocs.org/sdr/9722521144), Dec 1, 1997: TR UNIT. MALFUNCTIONED. DURING TAKEOFF ROLL, THE NR 3 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED AT 70 KTS WITH THE INDICATION EXTINGUISHING WITH POWER RE - [SDR 9722201146](https://openairdocs.org/sdr/9722201146), Nov 26, 1997: THRUST REVERSER. MALFUNCTIONED. DURING LANDING ROLLOUT, THE NR 1 ENGINE THRUST REVERSER FAILED TO STOW. THE CREW RECYCLED THE REVERSER AND A COMPRESSOR STALL OCCURRED. MAX EGT WAS 650C. THE EN - [SDR 9720491149](https://openairdocs.org/sdr/9720491149), Nov 1, 1997: COMPRESSOR. STALLED. DURING TAKEOFF ROLL AND WHILE INCREASING POWER, THE NR 3 ENGINE EXPERIENCED A COMPRESSOR STALL. N2 WAS AT 70 PERCENT AND EPR WAS 1.35 WITH NO ABNORMAL ENGINE IN - [SDR 9718111141](https://openairdocs.org/sdr/9718111141), Sep 28, 1997: TACH IND. FAILED. ON TAKEOFF ROLL, THE NR 3 ENGINE N1 INDICATION SPIKED WHILE AT MAXIMUM POWER. THE TAKEOFF WAS ABORTED AT APPROXIMATELY 40 KNOTS. ALL OTHER PARAMETERS WERE NORMA - [SDR 9716251144](https://openairdocs.org/sdr/9716251144), Aug 25, 1997: TR LIGHT. ILLUMINATED. ON TAKEOFF ROLL, THE NR 3 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED AT 100 KNOTS AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENAN - [SDR 9716051148](https://openairdocs.org/sdr/9716051148), Aug 21, 1997: TR CABLE. OUT OF ADJUST. WHILE ADVANCING THROTTLES TO TAKEOFF POWER, THE NR 2 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE G - [SDR 9715581149](https://openairdocs.org/sdr/9715581149), Aug 13, 1997: TR UNIT. MALFUNCTIONED. DURING LANDING ROLLOUT, THE NR 3 ENGINE THRUST REVERSER DID NOT STOW. THE NR 3 ENGINE EGT CLIMBED TO 920C AND THE ENGINE WAS SHUT DOWN. MAINTENANCE INSPECTED TH - [SDR 09712131148](https://openairdocs.org/sdr/09712131148), Jun 22, 1997: ENGINE. MALFUNCTIONED. CREW ABORTED TAKEOFF AT 110 KNOTS WHEN THE NR 1 ENGINE WOULD NOT REACH TAKEOFF EPR. TAKEOFF EPR WAS SET TO 1.51, BUT NR 1 ENGINE ONLY REACHED 1.45. ALL OTHER EN - [SDR 9711421146](https://openairdocs.org/sdr/9711421146), Jun 14, 1997: TR UNIT. LOCKED OUT. DURING TAKEOFF ROLL, NR 2 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. TAKEOFF WAS ABORTED AT 90 KNOTS. MAINTENANCE VERIFIED THAT THE THRUST REVERSER WAS LO - [SDR 9711121160](https://openairdocs.org/sdr/9711121160), Jun 6, 1997: DUCT. LOOSE. AT APPROXIMATELY V1 SPEED, THE NR 1 ENGINE FIRE WARNING LIGHT AND BELL ACTIVATED AND AT 800 FT AGL THE NR 1 REVERSER UNLOCK LIGHT ILLUMINATED. THE NR 1 ENGINE W - [SDR 9710721156](https://openairdocs.org/sdr/9710721156), Jun 4, 1997: COMPRESSOR. STALLED. DURING TAKEOFF ROLL, PASSENGERS REPORTED A FLASH AND FLAME BALL FROM LEFT WING. ALSO, TOWER REPORTED HEARING A LOUD NOISE. TAKEOFF WAS ABORTED AT 80 KNOTS. CREW - [SDR 9710311147](https://openairdocs.org/sdr/9710311147), May 27, 1997: ENGINE. OVERTEMP. ON LANDING WITH ALL ENGINES IN REVERSE THRUST, NR 1 ENGINE OVERTEMPED REACHING MAX EGT 980 CELSIUS. THE NR 1 ENGINE WAS SHUTDOWN WITH REVERSER UNLOCK LIGHT STIL - [SDR 9710111158](https://openairdocs.org/sdr/9710111158), May 21, 1997: COMPRESSOR. STALLED. AT 1,400 FEET DURING TAKEOFF, THE NR 2 ENGINE COMPRESSOR STALLED TWICE WITH EGT MOMENTARILY REACHING 900C ON BOTH OCCASIONS. NO OTHER ABNORMAL INDICATIONS. MAIN - [SDR 9709171148](https://openairdocs.org/sdr/9709171148), May 7, 1997: COMPRESSOR. STALLED. DURING TAKEOFF ROLL WITH POWER APPLICATION, THE NR 3 ENGINE COMPRESSOR STALLED. TAKEOFF WAS ABORTED WITH NO ENGINE LIMITS EXCEEDED. SECOND TAKEOFF WITH SLOWER P - [SDR 9708341160](https://openairdocs.org/sdr/9708341160), Apr 27, 1997: TR LIGHT. ILLUMINATED. DURING TAKEOFF ROLL, THE NR 2 ENGINE AMBER REVERSER UNLOCK LIGHT ILLUMINATED AND TAKEOFF WAS ABORTED. MAINTENANCE VERIFIED REVERSER WAS STOWED AND ALL LOCKPLATE - [SDR 9707431160](https://openairdocs.org/sdr/9707431160), Apr 13, 1997: ERP INDICATOR. MALFUNCTIONED. DURING TAKEOFF, NR 1 ENGINE EPR LOW. TAKEOFF WAS ABORTED AT 100 KNOTS. MAINTENANCE REPLACED EPR INDICATOR. ENGINE GROUND RUN AND EPR INDICATION AT IDLE AND TAKE - [SDR 9704011160](https://openairdocs.org/sdr/9704011160), Feb 26, 1997: COMPRESSOR. STALLED. SHORTLY AFTER TAKEOFF, THE NR 2 ENGINE EXPERIENCED A COMPRESSOR STALL AT 300 FEET. ENGINE EGT BRIEFLY REACHED 985 AND THEN ALL INDICATIONS RETURNED TO NORMAL. F - [SDR 9703731149](https://openairdocs.org/sdr/9703731149), Feb 22, 1997: OIL QUANTITY. LOW. DURING CRUISE FLIGHT, THE NR 3 ENGINE LOW OIL QUANTITY AND OIL PRESSURE DEVELOPED. THE NR 3 ENGINE WAS SHUT DOWN AND THE AIRCRAFT DIVERTED TO YMX. AN UNEVENTFUL - [SDR 9703081146](https://openairdocs.org/sdr/9703081146), Feb 12, 1997: COMPRESSOR. STALLED. DURING LANDING, THE NR 3 ENGINE COMPRESSOR STALLED WHILE IN REVERSE. ENGINE WAS SHUT DOWN WHILE STILL IN REVERSE. PERFORMED INSPECTION WITH NO FAULTS FOUND, OPE - [SDR 9702811152](https://openairdocs.org/sdr/9702811152), Feb 9, 1997: FIRE WARNING. ILLUMINATED. DURING CLIMB, THE NR 3 ENIGNE FIRE INDICATION ILLUMINATED. SHUT DOWN ENGINE AND FIRE BOTTLE DISCHARGED. DUMPED 16,800 LBS AND RETURNED TO LAX. AIRCRAFT TO BE FE - [SDR 9702491146](https://openairdocs.org/sdr/9702491146), Feb 7, 1997: TT2 SENSOR. FAILED. DURING TAKEOFF, THE NR 1 ENGINE FAILED TO ACCELERATE. TAKEOFF WAS ABORTED AT 70 KNOTS. MAINTENANCE REPLACED THE TT2 SENSOR AND RETURNED TO SERVICE. - [SDR 9700861141](https://openairdocs.org/sdr/9700861141), Jan 19, 1997: EPR INDICATOR. MALFUNCTIONED. DURING TAKEOFF ROLL, THE NR 3 ENGINE EPR WAS LOW. TAKEOFF WAS ABORTED AT 50 KNOTS. MAINTENANCE FOUND EPR INDICATOR FAULTY. REPLACED THE EPR INDICATOR. - [SDR 9625751147](https://openairdocs.org/sdr/9625751147), Dec 2, 1996: PT 7 LINE. BROKEN. DURING TAKEOFF ROLLOUT, THE NR 3 ENGINE EXHIBITED LOWER POWER. THE TAKEOFF WAS ABORTED AND A/C RETURNED TO GATE. MAINTENANCE FOUND A BROKEN PT7 LINE BETWEEN 6 A - [SDR 9624451146](https://openairdocs.org/sdr/9624451146), Nov 14, 1996: COMPRESSOR. STALLED. DURING POWER REDUCTION AT FL210, THE NR 1 ENGINE EXPERIENCED A COMPRESSOR STALL. AS EGT CLIMBED TO 750 DEGREES, THE ENGINE WAS SHUT DOWN AND RESTARTED. CREW FOL - [SDR 9624011158](https://openairdocs.org/sdr/9624011158), Nov 10, 1996: COMPRESSOR. STALLED. AT FL310 WHEN POWER WAS REDUCTED FOR DESCENT, THE NR 2 ENGINE EXPERIENCED A COMPRESSOR STALL. THERE WAS A SUBSEQUENT VIBRATION UNTIL THE ENGINE WAS SHUT DOWN. N - [SDR 9621781150](https://openairdocs.org/sdr/9621781150), Oct 12, 1996: COMPRESSOR BLADE. DAMAGED. DURING CRUISE AT FL350, THE NR 1 ENGINE EXPERIENCED A COMPRESSOR STALL AND RECOVERED. EPR INCREASED AND N1 FLUCTUATED. CREW FOLLOWED COM PROCEDURES AND CONTINUE All 76: https://openairdocs.org/engine/pratt-whitney-jt9d-20j/reports.md ## STCs that may be installed (OpenAirDocs) (7) Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SE01543CH](https://openairdocs.org/stc/SE01543CH): Replace Hamilton Sundstrand P/N 778839-13, 778839-14, 778839-19, 778839-20, 778839-37, 778839-38, 816682-1, 840618-2, 880724 carbon bushings with Cook Airtomic P/N AIR22947 Slotted Entry Busing in the High Pressure Shutoff Valve. Cook Airtomic - [STC SE00402NY](https://openairdocs.org/stc/SE00402NY): Installation of corrosion resistant steel replacement Chip Detectors. Vickers Inc. Lists JT9D Series - [STC SE00047AT-D](https://openairdocs.org/stc/SE00047AT-D): Modification of turbine exhaust case to provide increased wall thickness for the purpose of improved blade containment. Aero Component Technologies - [STC SE00046AT-D](https://openairdocs.org/stc/SE00046AT-D): State 1 LPC Stator: Provide a seamless one piece rubber airflow surface at the inner shroud. Aero Component Technologies - [STC SE593NE](https://openairdocs.org/stc/SE593NE): Installation of a Select Controls Inc. Engine Oil Shuttle Valve, P/N 2057-1-001. (See Eligibility List). Basken Valve Corporation. Lists JT9D Series - [STC SE435NE](https://openairdocs.org/stc/SE435NE): Installation of an oil tank filler opening shuttle valve. Stockbridge William D - [STC SA2227SO](https://openairdocs.org/stc/SA2227SO): Installation of wiring and associated components for utilization of the Rolls Royce, Inc., ARINC, interface/readers UT1317 or UT1317/1, for the purpose of acquisition, recording, and analysis in real time of engine/aircraft/ systems. (767 SERIES POWERED BY RR RB-11-524 SERIES. Rolls Royce, Inc. Lists JT9D Series ## PMA parts (OpenAirDocs) (745, first 50) Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this engine model on its data sheet, so check the FAA record before relying on it. Newest first. - [WF335297](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132393134320250602133021.0001): Filter Element, Oil. Donaldson Company Inc · PMA PQ2432CE · Replaces 815189, Alternate: AD-B863F-65Y4 · May 23, 2025 - [739951KT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID153223182920251125233836.0001): Nut Option. Turbine Kinetics Inc, A HEICO Aerospace Company · PMA PQ0816NE · Replaces 739951 · Feb 20, 2024 - [623V100-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149540485520240306163131.0001): Bleed Valve. Goodrich Corporation · PMA PQ1352NM · Replaces 728244 · Apr 7, 2023 - [623V100-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120575539320231218190434.0001): Bleed Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 728244 · Apr 7, 2023 - [684V800](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188649902420230914183251.0001): Thermostat Flow Control. Honeywell International Inc. · PMA PQ1222NM · Replaces 756796 Rev. B (8-22-90) · Mar 29, 2023 - [426V600](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183757188420230914183253.0001): Solenoid Bleed Override Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 655005 Rev. C (8-23-90) · Mar 29, 2023 - [666V100](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181891677520230914183252.0001): Fuel Check Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 706354 Rev. C (8-6-90) · Mar 29, 2023 - [684V100](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164424510920230914183254.0001): Rotor & Stator Assy.. Honeywell International Inc. · PMA PQ1222NM · Replaces 711742 Rev G. (4-2-76) · Mar 29, 2023 - [696V300](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID158650076720230914183255.0001): Fuel Control Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 715672 Rev. C (8-22-90) · Mar 29, 2023 - [DEC06- 003-501](https://drs.faa.gov/browse/excelExternalWindow/E2F24218F1DE901086258629005AC423.0001): Seal, Shaft, Stationary. Turbine Kinetics Inc, A HEICO Aerospace Company · PMA PQ0816NE · Replaces 218304 · Nov 16, 2020 - [K29109-5-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID193294423120240703182956.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638834 · Apr 1, 2020 - [MF1031-3PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189265568520240703183028.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 714862 · Apr 1, 2020 - [H19942-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID187988695520240703182923.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 490276 · Apr 1, 2020 - [K49502-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID185716762720240703182917.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 4021907 · Apr 1, 2020 - [H29118-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182787335020240703182936.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618097 · Apr 1, 2020 - [MK2000-4CWPW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182596555020240703183019.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 703997 · Apr 1, 2020 - [H29220-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181748590020240703182959.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 639299 · Apr 1, 2020 - [K3031-3PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID176075279120240703183020.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 707838 · Apr 1, 2020 - [H22-5PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169651563520240703182915.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 395037 · Apr 1, 2020 - [H19943-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168561015520240703182921.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 488594 · Apr 1, 2020 - [MK1031-3PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167837965920240703183021.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 707842 · Apr 1, 2020 - [H29220-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167487504120240703183000.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 639335 · Apr 1, 2020 - [K29109-4-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167318037720240703182950.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638671 · Apr 1, 2020 - [K49326-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID166344556420240703183044.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 753982 · Apr 1, 2020 - [CN29116-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162949938820240703182945.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 627798 · Apr 1, 2020 - [CN39971-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID160483571020240703183014.0001): Nut, gangchannel,S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 677824 · Apr 1, 2020 - [F50030-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157628639820240703183034.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 744238 · Apr 1, 2020 - [K29109-4-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157523208720240703182953.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638674 · Apr 1, 2020 - [H29967-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID156944476120240703183005.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 647796 · Apr 1, 2020 - [K29847-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID154954438420240703183002.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 646378 · Apr 1, 2020 - [H29117-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID154403298820240703182952.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638672 · Apr 1, 2020 - [H19943-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152390320020240703182922.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 490274 · Apr 1, 2020 - [H29112-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152072494720240703182937.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618103 · Apr 1, 2020 - [H29908-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151436919820240703182947.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 627799 · Apr 1, 2020 - [K29843-4-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID147699109120240703183003.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 646391 · Apr 1, 2020 - [K29110-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID145706197720240703182942.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618106 · Apr 1, 2020 - [MK2000-3PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID144854170920240703183028.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 715018 · Apr 1, 2020 - [K29110-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID140281191220240703182940.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618106 · Apr 1, 2020 - [F29724-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID137456923220240703182933.0001): Nut, plain, bbl. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 594405 · Apr 1, 2020 - [MK49975-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135829873420240703183030.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 740742 · Apr 1, 2020 - [F2000-4PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132526843720240703183023.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 710826 · Apr 1, 2020 - [K39085-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID130771087820240703183012.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 650410 · Apr 1, 2020 - [H29117-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129204796520240703183013.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 662141 · Apr 1, 2020 - [CN50039-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID127806516220240703182914.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 2173479 · Apr 1, 2020 - [MF29748-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID118624175620240703182934.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 596295 · Apr 1, 2020 - [MF29122-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117317872320240703182955.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638676 · Apr 1, 2020 - [F5031-3BCPW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID116778492120240703183026.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 714847 · Apr 1, 2020 - [H29119-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID116448616220240703182938.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618105 · Apr 1, 2020 - [H29605-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID112946186820240703183009.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 649734 · Apr 1, 2020 - [H50361-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID111567389920240703183045.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 760552 · Apr 1, 2020 All of them: https://openairdocs.org/engine/pratt-whitney-jt9d-20j/pma.md --- 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.