# Pratt & Whitney PT6T-3A

- Type: Engine model (FAA registry)
- Registry code: 51521
- Manufacturer (registry): P & W
- Model: PT6T-3A
- Engine type: Turbo-shaft
- Power: 900 hp
- Data sheet: [TCDS E22EA](https://openairdocs.org/tcds/E22EA) (OpenAirDocs)
- Holder: Pratt & Whitney Canada Corp.
- Installed in: 0 registered aircraft
- Page: https://openairdocs.org/engine/pratt-whitney-pt6t-3a

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 78-17-05](https://openairdocs.org/ad/78-17-05): Automatic Fuel Control Unit · Pratt & Whitney Canada PT6T-3, PT6T-3A and PT6T-6. Effective Aug 31, 1978
- [AD 76-02-08](https://openairdocs.org/ad/76-02-08): Fuel Pump · Pratt & Whitney Canada PT6T-3, PT6T-3A and PT6T-6. Effective Feb 5, 1976

## 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.

## STCs that may be installed (OpenAirDocs) (2)

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 SE00022EN](https://openairdocs.org/stc/SE00022EN): Installation of Oil Tank Filler Neck Check Valve. Helicopter Support Inc Services Div
- [STC SE659NE](https://openairdocs.org/stc/SE659NE): Installation of oil tank filler neck check valve, P/N TSA-76A. Aviation Components Support

## PMA parts (OpenAirDocs) (124, 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.

- [3034508WFC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168792409620250624152910.0001): Oil Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3034508 3036376, Alternate: 11-11064… · Jun 2, 2025
- [WF334552](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID147857861520250602133017.0001): Compressor Air Filter. Donaldson Company Inc · PMA PQ2432CE · Replaces 3029268, Alternate: 3028856, 3029267… · May 23, 2025
- [3034508WFC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID123684652020250602133047.0001): Oil Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3029315, 3015330, 3029316, 3020291… · May 23, 2025
- [WF336238](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID112708987520250602133027.0001): Compressor Air Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3038142, P-1139 · May 23, 2025
- [3036376GF](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID187641607320230829140955.0001): Filter Element. Global Filtration, Inc. · PMA PQ0993SW · Replaces Pratt and Whitney Canada Corp… · May 19, 2023
- [3005305ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100515682720220531181949.0001): Washer, Key, Fuel Nozzle Sealing. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3005305 · May 26, 2022
- [3005305ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID123569386220220811113051.0001): Washer, Key, Fuel Nozzle Sealing. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3005305 · Jan 19, 2022
- [3100915-01ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID839062612020211228130047.0001): Spring Helical Compression. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3100915-01 · Dec 20, 2021
- [3101620-01ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID559631045920211228130052.0001): Retainer Helical Compression Spring. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3101620-01 · Dec 20, 2021
- [3100917-02ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID353252448220211228130050.0001): Bushing Damper. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3100917-02 · Dec 20, 2021
- [3018503CL19CP](https://drs.faa.gov/browse/excelExternalWindow/A6F4116652F6D786862584F0005578A6.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3018503CL19 · Jun 6, 2019
- [3018503CL12CP](https://drs.faa.gov/browse/excelExternalWindow/65438522A9C88C34862584F000557837.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3018503CL12 · Jun 6, 2019
- [3036376WE](https://drs.faa.gov/browse/excelExternalWindow/FBEA859E0484D673862582280078879F.0001): Oil Filter Option. Wencor LLC · PMA PQ1370NM · Replaces 3036376 · Nov 19, 2017
- [3018240WE](https://drs.faa.gov/browse/excelExternalWindow/786BB59BDA15E8698625822800788779.0001): Rivet-Tubular. Wencor LLC · PMA PQ1370NM · Replaces 3018240 · Nov 19, 2017
- [3018344WE](https://drs.faa.gov/browse/excelExternalWindow/6BEAD5CE944C36C7862582280078877B.0001): Rivet-Tubular. Wencor LLC · PMA PQ1370NM · Replaces 3018344 · Nov 19, 2017
- [3029268GF](https://drs.faa.gov/browse/excelExternalWindow/717D21482402636C86257F22007C80F3.0001): Compressor Air Filter Element. Global Filtration, Inc. · PMA PQ0993SW · Replaces Pratt and Whitney 3029268, 3029267… · Dec 14, 2015
- [3034508WFC](https://drs.faa.gov/browse/excelExternalWindow/8A7A071C84B36D7C8625763F006BF775.0001): Oil Filter Element. Western Filter A Division of Donaldson Company Inc · PMA PQ1847NM · Replaces 3034508, 3036376, Alternate P-1009… · Aug 4, 2014
- [3108939-01WFC](https://drs.faa.gov/browse/excelExternalWindow/61F6EC72A41C91DF8625763F006BF7B8.0001): Cleanable Air Filter Element. Western Filter A Division of Donaldson Company Inc · PMA PQ1847NM · Replaces 3108939-01, Alternate P-1068 · Aug 4, 2014
- [NSL1422RC A2](https://drs.faa.gov/browse/excelExternalWindow/F1D46FA139CFCDB786257D19004F978A.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant PR-1422 A2 · Jul 15, 2014
- [NSL890RC A2](https://drs.faa.gov/browse/excelExternalWindow/B46F32AF00F68A6286257D19004F9776.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant Pro Seal 890 A2 · Jul 15, 2014
- [NSL1422RC B1/2](https://drs.faa.gov/browse/excelExternalWindow/90FFB219EACFBF1086257D19004F978C.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant PR-1422 B1/2 · Jul 15, 2014
- [NSL1422RC B2](https://drs.faa.gov/browse/excelExternalWindow/8EAEFB4EE4F177D486257D19004F9795.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant PR-1422 B2 · Jul 15, 2014
- [NSL890RC A1/2](https://drs.faa.gov/browse/excelExternalWindow/65B438A9A5E118B186257D19004F9771.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant Pro Seal 890 A1/2 · Jul 15, 2014
- [NSL1422RC A1/2](https://drs.faa.gov/browse/excelExternalWindow/521F1EF4D9540EFB86257D19004F9788.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant PR-1422 A1/2 · Jul 15, 2014
- [NSL1750-B2](https://drs.faa.gov/browse/excelExternalWindow/EE111F30899AEF5986257D1000653FDD.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant PR-1750-B2 · Jun 30, 2014
- [NSL1422-A2](https://drs.faa.gov/browse/excelExternalWindow/E8ECC1FBB41E086386257D1000653FCF.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant PR-1422-A2… · Jun 30, 2014
- [NSL1750-B1/2](https://drs.faa.gov/browse/excelExternalWindow/AA583CE6DF66480C86257D1000653FDA.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant PR-1750-B1/2 · Jun 30, 2014
- [NSL1422-B1/2](https://drs.faa.gov/browse/excelExternalWindow/5DAA4D8BBF22D3ED86257D1000653FD1.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant PR-1422-B1/2… · Jun 30, 2014
- [NSL1422-B2](https://drs.faa.gov/browse/excelExternalWindow/556C97886E80CEC886257D1000653FD2.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant PR-1422-B2… · Jun 30, 2014
- [NSL1422-A1/2](https://drs.faa.gov/browse/excelExternalWindow/3A0813D15DCF6F5D86257D1000653FCC.0001): Sealant. Dedicated Packaging, LLC · PMA PQ4210CE · Replaces PRC-DeSoto Sealant PR-1422-A1/2… · Jun 30, 2014
- [5006050WE](https://drs.faa.gov/browse/excelExternalWindow/950D7C8E9D1095F386257CD7006641F6.0001): Coupling Assembly, Pump Drive. Wencor LLC · PMA PQ1370NM · Replaces 5006050 · May 8, 2014
- [11-11064](https://drs.faa.gov/browse/excelExternalWindow/FFE8CE57DCF6DED186257B4000546C4B.0001): Oil Filter Element. Western Filter A Division of Donalson Company Inc · PMA PQ1847NM · Replaces 3015330, 3029315, 3020291, 3029316… · Mar 11, 2013
- [P-1009](https://drs.faa.gov/browse/excelExternalWindow/7205CDD9FC26811B86257B4000546C70.0001): Filter Element. Western Filter A Division of Donalson Company Inc · PMA PQ1847NM · Replaces 3015330, 3020291, 3029315, 3029316… · Mar 11, 2013
- [AS3145P](https://drs.faa.gov/browse/excelExternalWindow/DE1C00CB5E094F1F86257AD7006CF07C.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 162, RTV 162, DOW 3145, RTV 3145 · Dec 9, 2012
- [AS3145](https://drs.faa.gov/browse/excelExternalWindow/BE764A2C6FEE1C9886257AD7006CF065.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 162, Dow 3145 · Dec 9, 2012
- [AS157](https://drs.faa.gov/browse/excelExternalWindow/B4A82CB1CBF23CF386257AD7006CF063.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 157, Dow 732 · Dec 9, 2012
- [AS106](https://drs.faa.gov/browse/excelExternalWindow/9BF65FF149C49D0D86257AD7006CF09E.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 106, RTV 106 · Dec 9, 2012
- [AS159](https://drs.faa.gov/browse/excelExternalWindow/9BA1992E44EE2E3986257AD7006CF05D.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 159, GE 106, Dow 736 · Dec 9, 2012
- [AS159](https://drs.faa.gov/browse/excelExternalWindow/6F91E6B11B31244C86257AD7006CF074.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 159, RTV 159, GE 106, RTV 106, Dow… · Dec 9, 2012
- [AS157](https://drs.faa.gov/browse/excelExternalWindow/4FF3AA8AF56BFB5586257AD7006CF077.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 157, RTV 157, Dow 732, RTV 732 · Dec 9, 2012
- [AS3145](https://drs.faa.gov/browse/excelExternalWindow/4CC01A26D1DC5BD486257AD7006CF079.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 162, RTV 162, DOW 3145, RTV 3145 · Dec 9, 2012
- [AS3145P](https://drs.faa.gov/browse/excelExternalWindow/4365D6FE16FC91EC86257AD7006CF068.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 162, Dow 3145 · Dec 9, 2012
- [AS3145 & AS3145P](https://drs.faa.gov/browse/excelExternalWindow/FD2C033E3F15F47D86257AAD006A780A.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 162, RTV 162, Dow 3145, RTV 3145 · Oct 23, 2012
- [AS159](https://drs.faa.gov/browse/excelExternalWindow/D052D5208644168B86257AAD006A7802.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 159, RTV 159, GE 106, RTV 106, Dow… · Oct 23, 2012
- [AS159](https://drs.faa.gov/browse/excelExternalWindow/BB05AE50D2C4355D86257AAD006A77C2.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 159, GE 106, Dow 736 · Oct 23, 2012
- [AS106](https://drs.faa.gov/browse/excelExternalWindow/AACF134D7566072186257AAD006A784A.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 106, RTV 106 · Oct 23, 2012
- [AS3145](https://drs.faa.gov/browse/excelExternalWindow/90C6AC462D32F1B386257AAD006A77C6.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 162, Dow 3145 · Oct 23, 2012
- [AS3145P](https://drs.faa.gov/browse/excelExternalWindow/7F996162E046213786257AAD006A77CA.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 162, Dow 3145 · Oct 23, 2012
- [AS157](https://drs.faa.gov/browse/excelExternalWindow/2B691205ECAAB3D786257AAD006A7806.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 157, RTV 157, Dow 732, RTV 732 · Oct 23, 2012
- [AS157](https://drs.faa.gov/browse/excelExternalWindow/15839E79F9773F7986257AAD006A77C5.0001): Sealant. Aerospace Sealants LLC · PMA PQ3886CE · Replaces GE 157, Dow 732 · Oct 23, 2012

All of them: https://openairdocs.org/engine/pratt-whitney-pt6t-3a/pma.md

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