# Pratt & Whitney JT9D-59A

- Type: Engine model (FAA registry)
- Registry code: 51549
- Manufacturer (registry): P & W
- Model: JT9D-59A
- Engine type: Turbo-fan
- Power: 51,720 lb thrust
- Data sheet: [TCDS E3NE](https://openairdocs.org/tcds/E3NE) (OpenAirDocs)
- Holder: Pratt & Whitney
- Installed in: 1 registered aircraft
- Page: https://openairdocs.org/engine/pratt-whitney-jt9d-59a

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 2005-05-13](https://openairdocs.org/ad/2005-05-13): High pressure turbine (HPT) second stage airseals · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Apr 14, 2005
- [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 98-21-22 R1](https://openairdocs.org/ad/98-21-22-R1): High Pressure Compressor Disks · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 8 more. Effective Jan 18, 2000
- [AD 99-14-08](https://openairdocs.org/ad/99-14-08): Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Sep 13, 1999
- [AD 99-11-09](https://openairdocs.org/ad/99-11-09): Diffuser Case Rear Rail · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Jul 26, 1999
- [AD 99-04-05](https://openairdocs.org/ad/99-04-05): Rear Skirt Ddiffuser Case Inspection · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Apr 12, 1999
- [AD 97-25-10 R1](https://openairdocs.org/ad/97-25-10-R1): (HPT) Disks · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 5 more. Effective Jul 29, 1998
- [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 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 93-15-04](https://openairdocs.org/ad/93-15-04): Fuel Nozzle And Support Assembly · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Nov 19, 1993
- [AD 93-14-20](https://openairdocs.org/ad/93-14-20): Vane Cluster Assembly · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Aug 27, 1993
- [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 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 2002-10-07](https://openairdocs.org/ad/2002-10-07) (historical): High Pressure Turbine (HPT) Second Stage Airseals · Pratt & Whitney Division JT9D-59A, JT9D-70A, JT9D-7Q and 1 more. Effective Jun 27, 2002
- [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

## Information bulletins (advisory) (2)

- [SAIB NE-02-30](https://openairdocs.org/saib/NE-02-30): . Issued Jun 3, 2002
- [SAIB NE-02-01](https://openairdocs.org/saib/NE-02-01): . Issued Oct 5, 2001

## Registered aircraft (1)

- [N974VV](https://openairdocs.org/aircraft/N974VV): [Aircraft Endeavors LLC](https://openairdocs.org/faa-owner/AIRCRAFT%20ENDEAVORS%20LLC), [San Antonio, TX](https://openairdocs.org/faa-place/TX/San%20Antonio), built 1979, S/N 46974

## NTSB investigations

None matched to aircraft with this engine model.

## FAA accident and incident reports

None matched to aircraft with this engine model.

## STCs that may be installed (OpenAirDocs) (5)

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 SE00024EN](https://openairdocs.org/stc/SE00024EN): Installation of oil tank filler neck check valve. Helicopter Support Inc Services Div
- [STC SE497NE](https://openairdocs.org/stc/SE497NE): Installation of oil tank filler neck check valve assembly. Aviation Components Support
- [STC SE00045AT-D](https://openairdocs.org/stc/SE00045AT-D): Modify -59A LPT case to reduce the thickness of four bosses to eliminate interference with the turbine case cooling manifold installed on -7Q engines. This modification permits use of the -59A LPT case on-7Q engines. Aero Component Technologies
- [STC SE435NE](https://openairdocs.org/stc/SE435NE): Installation of an oil tank filler opening shuttle valve. Stockbridge William D

## PMA parts (OpenAirDocs) (985, 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
- [787V500](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199627737420230914183247.0001): Air Cooling Shutoff Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 770051 Rev. B (10-26-77) · Mar 29, 2023
- [1011V0200-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194862638220230914183239.0001): Turbine Case Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 788775 Rev. B (10-13-82) · Mar 29, 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
- [941V100](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162411062720230914183248.0001): Air Shut-off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 773627 Rev. C (4-12-84) · Mar 29, 2023
- [941V200](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID138315515420230914183245.0001): Air Shut-off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 5001987-01 Rev. D (8/20/90) · Mar 29, 2023
- [787V900](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129148698520230914183249.0001): Air Shut-off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 777835 Rev. A (8/90) · Mar 29, 2023
- [1011V0200](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113104036020230914183238.0001): Turbine Case Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 788775 Rev. B (10-13-82) · Mar 29, 2023
- [787V300](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID179052864220240223164806.0001): Shut-Off Valve. Honeywell International Inc. · PMA PQ1222NM · Replaces 746357 Rev. A 2-8-74 · Mar 23, 2023
- [DEC01- 056-533](https://drs.faa.gov/browse/excelExternalWindow/E52CBA5DDCD311F186258629005AC28B.0001): Gasket - .093 Free Height. Turbine Kinetics Inc, A HEICO Aerospace Company · PMA PQ0816NE · Replaces ST1111-33 ST1121-33 ST1141-33 · Nov 16, 2020
- [733726WE](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID213268376120210611172313.0001): Pin, Shoulder Headless, 0.156 X 0.100 X 0.300 X 6.720. Wencor LLC · PMA PQ1370NM · Replaces 733726 · Oct 15, 2020
- [715118WE](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129247679920210611172135.0001): Pin, Straight Headed, .1705 X .305, Slab. Wencor LLC · PMA PQ1370NM · Replaces 715118 · Oct 15, 2020
- [M770354](https://drs.faa.gov/browse/excelExternalWindow/5BFC3294592D814B862585E4003A0124.0001): Spacer-#1&2 Bearing. Jet Avion Corporation A HEICO Aerospace Company · PMA PQ1015CE · Replaces Pratt & Whitney P/N 770354 · Sep 9, 2020
- [K29109-5-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199222314220240703182956.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638834 · Apr 1, 2020
- [H29117-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194053167920240703183012.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 662141 · Apr 1, 2020
- [H29118-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID192129229120240703182937.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618097 · Apr 1, 2020
- [K29110-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191799248720240703182941.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618106 · Apr 1, 2020
- [H22-5PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191412436920240703182916.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 395037 · Apr 1, 2020
- [H50361-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189842981620240703183046.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 760552 · Apr 1, 2020
- [F5231-4PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188658819220240703182924.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 501558 · Apr 1, 2020
- [K1000X4PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID188589440020240703183043.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 753965 · Apr 1, 2020
- [F39244-3BC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183518510320240703183036.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 746922 · Apr 1, 2020
- [K3031-3PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182584152620240703183020.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 707838 · Apr 1, 2020
- [H29220-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181296887920240703182959.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 639299 · Apr 1, 2020
- [H29605-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178996417420240703183009.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 649734 · Apr 1, 2020
- [K39369-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178897652920240703183039.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 751935 · Apr 1, 2020
- [F5031-3BCPW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID174223066620240703183026.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 714847 · Apr 1, 2020
- [F50030-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID174206753420240703183035.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 744380 · Apr 1, 2020
- [CN39971-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID173827076120240703183014.0001): Nut, gangchannel,S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 677824 · Apr 1, 2020
- [MF39839-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID172863478620240703183032.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 743080 · Apr 1, 2020
- [K29109-4-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171047886120240703182951.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638671 · Apr 1, 2020
- [MK1031-4PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169137431020240703183037.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 750691 · Apr 1, 2020
- [MF29748-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168182111020240703182934.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 596295 · Apr 1, 2020
- [K39085-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID165068875520240703183012.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 650410 · Apr 1, 2020
- [CN52502-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID162355773120240703183050.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 800826 · Apr 1, 2020
- [MK1031-3PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152243115020240703183022.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 707842 · Apr 1, 2020
- [H29112-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151789073520240703182938.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618103 · Apr 1, 2020
- [F29964-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149905483120240703182948.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 637285 · Apr 1, 2020
- [H29819-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149068996020240703182944.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 624998 · Apr 1, 2020
- [K29110-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID147186387620240703182942.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 618106 · Apr 1, 2020
- [MF29122-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID145687999320240703182955.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 638676 · Apr 1, 2020
- [MK2000-3PW](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID145184507620240703183029.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 715018 · Apr 1, 2020
- [F49342-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID140951668720240703183024.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 711481 · Apr 1, 2020
- [H19942-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135730084120240703182923.0001): Nut, S-L. Arconic Global Fasteners & Rings, Inc., dba Arconic Fastening Systems · PMA PQ1351NM · Replaces 490276 · Apr 1, 2020

All of them: https://openairdocs.org/engine/pratt-whitney-jt9d-59a/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.