# Pratt & Whitney JT9D-20 - Type: Engine model (FAA registry) - Registry code: 51547 - Manufacturer (registry): P & W - Model: JT9D-20 - Engine type: Turbo-fan - Power: 44,500 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-20 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 2001-04-11](https://openairdocs.org/ad/2001-04-11): High Pressure Turbine (HPT) Disks · Pratt & Whitney Division JT9D-20, JT9D-7, JT9D-7A and 7 more. Effective May 7, 2001 - [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 89-10-07](https://openairdocs.org/ad/89-10-07): Strut Insert Assembly · Pratt & Whitney Division JT9D-20, JT9D-3A, JT9D-7 and 5 more. Effective May 30, 1989 - [AD 88-24-05](https://openairdocs.org/ad/88-24-05): Inner Airseal · Pratt & Whitney Division JT9D-20, JT9D-3A, JT9D-7 and 5 more. Effective Dec 15, 1988 - [AD 86-09-01 R1](https://openairdocs.org/ad/86-09-01-R1): Turbine Vane Antirotation Pin Failure · Pratt & Whitney Division JT9D-20, JT9D-3A, JT9D-59A and 9 more. Effective Jul 6, 1988 - [AD 82-16-10](https://openairdocs.org/ad/82-16-10): Fan Exit Case Assembly · Pratt & Whitney Division JT9D-20. Effective Aug 16, 1982 - [AD 74-10-05 R1](https://openairdocs.org/ad/74-10-05-R1): Turbine Nozzle Guide Vane · Pratt & Whitney Division JT9D-20, JT9D-7 and JT9D-7A. Effective Nov 17, 1980 - [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 78-17-08](https://openairdocs.org/ad/78-17-08): Fifteenth Stage Compressor Disks · Pratt & Whitney Division JT9D-20, JT9D-3A, JT9D-7 and 5 more. Effective Sep 1, 1978 - [AD 76-20-03](https://openairdocs.org/ad/76-20-03): Seal Clearances · Pratt & Whitney Division JT9D-20, JT9D-3A, JT9D-7 and 4 more. Effective Nov 16, 1977 - [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 - [AD 77-01-07](https://openairdocs.org/ad/77-01-07): Fifth Stage Turbine Hubs · Pratt & Whitney Division JT9D-20, JT9D-3A, JT9D-7 and 4 more Historical (superseded or no longer in force): - [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 ## Information bulletins (advisory) (1) - [SAIB NE-02-01](https://openairdocs.org/saib/NE-02-01): . Issued Oct 5, 2001 ## 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 (103, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR EIA2006239](https://openairdocs.org/sdr/EIA2006239), Oct 4, 2006: FUEL CONTROL. MALFUNCTIONED. 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 DUPLI - [SDR EIA2006040](https://openairdocs.org/sdr/EIA2006040), Mar 31, 2006: WIRE. BROKEN. 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 - [SDR 0101951153](https://openairdocs.org/sdr/0101951153), May 23, 2001: TRANSMITTER. MALFUNCTIONED. 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 - [SDR 20001214SH005](https://openairdocs.org/sdr/20001214SH005), Nov 14, 2000: FITTING. LOOSE. 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 - [SDR 0000991152](https://openairdocs.org/sdr/0000991152), Mar 22, 2000: ENGINE. STALLED. 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. MAINTENAN - [SDR 0000791162](https://openairdocs.org/sdr/0000791162), Mar 1, 2000: FCU. MALFUNCTIONED. 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 F - [SDR 0000231143](https://openairdocs.org/sdr/0000231143), Jan 27, 2000: ENGINE. MALFUNCTIONED. 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 MECHANI - [SDR 9903141154](https://openairdocs.org/sdr/9903141154), Aug 5, 1999: PRBC VALVE. MALFUNCTIONED. 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 - [SDR 9901971149](https://openairdocs.org/sdr/9901971149), Jun 1, 1999: COMPRESSOR. STALLED. 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 W - [SDR 9809551153](https://openairdocs.org/sdr/9809551153), Jun 12, 1998: ENGINE. FAILED. 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 - [SDR 9809071157](https://openairdocs.org/sdr/9809071157), May 10, 1998: COMPRESSOR. STALLED. 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 - [SDR 9808621162](https://openairdocs.org/sdr/9808621162), May 6, 1998: 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 9808211160](https://openairdocs.org/sdr/9808211160), May 2, 1998: COMPRESSOR. STALLED. 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 - [SDR 9806981152](https://openairdocs.org/sdr/9806981152), Apr 20, 1998: COMPRESSOR. STALLED. 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. MAINTENANC - [SDR 9806901162](https://openairdocs.org/sdr/9806901162), Apr 17, 1998: COMPRESSOR. STALLED. 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 - [SDR 9806741154](https://openairdocs.org/sdr/9806741154), Apr 15, 1998: COMPRESSOR. STALLED. 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 - [SDR 9806761155](https://openairdocs.org/sdr/9806761155), Apr 15, 1998: COMPRESSOR. STALLED. 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 - [SDR 9806421143](https://openairdocs.org/sdr/9806421143), Apr 9, 1998: COMPRESSOR. STALLED. 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 BO - [SDR 9806431143](https://openairdocs.org/sdr/9806431143), Apr 9, 1998: COMPRESSOR. STALLED. 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 BO - [SDR 9806391155](https://openairdocs.org/sdr/9806391155), Apr 8, 1998: COMPRESSOR. STALLED. 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 A - [SDR 9805731154](https://openairdocs.org/sdr/9805731154), Mar 30, 1998: COMPRESSOR. STALLED. 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 K - [SDR 9804841143](https://openairdocs.org/sdr/9804841143), Mar 20, 1998: ENGINE. FAILED. 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 AN - [SDR 9803401154](https://openairdocs.org/sdr/9803401154), Feb 24, 1998: COMPRESSOR. STALLED. 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 EN - [SDR 9803171157](https://openairdocs.org/sdr/9803171157), Feb 22, 1998: TR UNIT. MALFUNCTIONED. 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. MAINT - [SDR 9801951143](https://openairdocs.org/sdr/9801951143), Jan 30, 1998: ENGINE. MALFUNCTIONED. 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 LI - [SDR 9801691152](https://openairdocs.org/sdr/9801691152), Jan 27, 1998: COMPRESSOR. STALLED. 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 - [SDR 9801101152](https://openairdocs.org/sdr/9801101152), Jan 18, 1998: COMPRESSOR. STALLED. 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 - [SDR 9801091145](https://openairdocs.org/sdr/9801091145), Jan 15, 1998: ENGINE. OVER TEMP. 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 PERF - [SDR 9800521155](https://openairdocs.org/sdr/9800521155), Jan 11, 1998: COMPRESSOR. STALLED. 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 DESCEND - [SDR 9800201155](https://openairdocs.org/sdr/9800201155), Jan 4, 1998: COMPRESSOR. STALLED. 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 S - [SDR 9724571150](https://openairdocs.org/sdr/9724571150), Dec 31, 1997: EPR INDICATION. INOPERATIVE. DURING TAKEOFF AT APPROXIMATELY 60 KTS, THE NR 1 ENGINE EPR INDICATION BECAME INOPERATIVE. ALL OTHER ENGINE INDICATIONS WERE NORMAL. THE TAKEOFF WAS ABORTED. TH - [SDR 9724451151](https://openairdocs.org/sdr/9724451151), Dec 24, 1997: COMPRESSOR. STALLED. 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 WIT - [SDR 9723141143](https://openairdocs.org/sdr/9723141143), Dec 11, 1997: COMPRESSOR. STALLED. 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 - [SDR 9722961143](https://openairdocs.org/sdr/9722961143), Dec 7, 1997: COMPRESSOR. STALLED. 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 - [SDR EIAA970208](https://openairdocs.org/sdr/EIAA970208), Nov 12, 1997: COMPRESSOR. STALLED. 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 - [SDR 9720781157](https://openairdocs.org/sdr/9720781157), Nov 5, 1997: COMPRESSOR. STALLED. 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 STA - [SDR 9720181150](https://openairdocs.org/sdr/9720181150), Oct 27, 1997: COMPRESSOR. STALLED. 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 B - [SDR 9720191150](https://openairdocs.org/sdr/9720191150), Oct 27, 1997: COMPRESSOR. STALLED. 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 ENG - [SDR 9719831141](https://openairdocs.org/sdr/9719831141), Oct 21, 1997: FUEL CONTROL. MALFUNCTIONED. 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 - [SDR 9718781143](https://openairdocs.org/sdr/9718781143), Oct 5, 1997: COMPRESSOR. STALLED. 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 UNSUCCES - [SDR 9718791157](https://openairdocs.org/sdr/9718791157), Oct 5, 1997: BLEED DUCT. DAMAGED. 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 OU - [SDR 9717821154](https://openairdocs.org/sdr/9717821154), Sep 20, 1997: ENGINE. FAILED. 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 PREC - [SDR 9715651151](https://openairdocs.org/sdr/9715651151), Aug 18, 1997: COMPRESSOR. STALLED. 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 - [SDR 9715571161](https://openairdocs.org/sdr/9715571161), Aug 14, 1997: ENGINE. FAILED. 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. A - [SDR 9713421157](https://openairdocs.org/sdr/9713421157), Jul 9, 1997: COMPRESSOR. STALLED. 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 EN - [SDR 9711981157](https://openairdocs.org/sdr/9711981157), Jun 19, 1997: EGT INDICATION. RISING. 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 - [SDR 9710681152](https://openairdocs.org/sdr/9710681152), Jun 3, 1997: PRBC. FAILED. 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 N - [SDR 9710211143](https://openairdocs.org/sdr/9710211143), May 24, 1997: ENGINE. MALFUNCTIONED. 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 A - [SDR 9709631155](https://openairdocs.org/sdr/9709631155), May 1, 1997: TR UNIT. MALFUNCTIONED. 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 THR - [SDR 9707731154](https://openairdocs.org/sdr/9707731154), Apr 18, 1997: BLEED SOLENOID. MALFUNCTIONED. 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 All 103: https://openairdocs.org/engine/pratt-whitney-jt9d-20/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 SE2338SO](https://openairdocs.org/stc/SE2338SO): Installation of an oil tank safety cap adapter which prevents oil loss in the event of loss or damage to the filler cap. Jet Avion Corporation - [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 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) (804, 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 - [449V450-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180455150620230914183250.0001): Linear Directional Control Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 729728 · 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 - [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-20/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.