# U/A Canada PT6A-6/C20

- Type: Engine model (FAA registry)
- Registry code: 61571
- Manufacturer (registry): U/A CANADA
- Model: PT6A-6/C20
- Engine type: Turbo-prop
- Power: 550 hp
- Data sheet: [TCDS E4EA](https://openairdocs.org/tcds/E4EA) (OpenAirDocs)
- Holder: Pratt & Whitney Canada Corp.
- Installed in: 0 registered aircraft
- Page: https://openairdocs.org/engine/u-a-canada-pt6a-6-c20

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 97-04-12](https://openairdocs.org/ad/97-04-12): Compressor Bleed-off Valve · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 52 more. Effective Mar 14, 1997
- [AD 92-15-11](https://openairdocs.org/ad/92-15-11): Compressor Delivery Air Line (P3) Filter Assembly · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-21 and 7 more. Effective Aug 17, 1992
- [AD 80-08-12](https://openairdocs.org/ad/80-08-12): Fuel Pump Drive Coupling Splines · Pratt & Whitney Canada PT6A-11, PT6A-112, PT6A-135 and 24 more. Effective Apr 18, 1980
- [AD 80-04-02](https://openairdocs.org/ad/80-04-02): Push-Pull Control Terminal · Pratt & Whitney Canada PT6A-20, PT6A-6A, PT6A-6B and 1 more. Effective Feb 8, 1980
- [AD 75-06-01](https://openairdocs.org/ad/75-06-01): Gearbox Deterioration · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-20B and 11 more. Effective Apr 1, 1977
- [AD 75-11-04](https://openairdocs.org/ad/75-11-04): Reduction Gearbox Engine Distress · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-20B and 8 more. Effective May 20, 1975

## Information bulletins (advisory) (1)

- [SAIB NE-12-04](https://openairdocs.org/saib/NE-12-04): Turbine/ Turboprop Engine: Reduction Gearbox. Issued Nov 1, 2011

## 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 (1)

As reported by operators and repair stations, by the model named in the report.

- [SDR CA150410001](https://openairdocs.org/sdr/CA150410001), Apr 6, 2015: TURBINE. DEFECTIVE. (CAN) DURING FLIGHT, THE CREW NOTICED THAT THE ENG HAD HIGH TEMP & LOW TORQUE INDICATION. THE PILOT THEN ELECTED TO RETURN BACK TO ORIGIN, UNEVENTFULLY. BORESCO

## 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 SE00003EN](https://openairdocs.org/stc/SE00003EN): Instructions for Continued Airworthiness for the PT6A-6/C20, -20, -20A and, -20B engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. MORE Company Inc
- [STC SE615GL](https://openairdocs.org/stc/SE615GL): Incorporation of a fuel flow transducer. Shadin Avionics
- [STC SE09257SC](https://openairdocs.org/stc/SE09257SC): Convert P&W Engine Models PT6A-15AG, -27, and -28, into PT6A-34 configuration. Covington Aircraft Engines, Inc
- [STC SE659NE](https://openairdocs.org/stc/SE659NE): Installation of oil tank filler neck check valve, P/N TSA-76A. Aviation Components Support
- [STC SE1269EA](https://openairdocs.org/stc/SE1269EA): Stripping and recoating of compressor turbine blades, P/N 3023401, with Walbar Metals, Inc. Airwork Corporation
- [STC SE1165EA](https://openairdocs.org/stc/SE1165EA): Assembly and installation of AW10262 wet spline starter gear seal. Airwork Corporation
- [STC SE4607SW](https://openairdocs.org/stc/SE4607SW): Revise the starter-generator drive spline to provide lubrication with engine oil. Aviall of Texas, Inc

## PMA parts (OpenAirDocs) (133, 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.

- [3045951-02AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135029382220260722151307.0001): Detector, Chip, Magnetic. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3045951-02 · May 27, 2026
- [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
- [WF337408](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125475616820250602133039.0001): Filter Element Assy, Fuel. Donaldson Company Inc · PMA PQ2432CE · Replaces 217384-1, 26281 · May 23, 2025
- [3012414AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169774044220250106202801.0001): Nut, Self-Locking, 12 Point. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3012411 · Dec 10, 2024
- [3012414AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164469161820250106202800.0001): Nut, Self-Locking, 12 Point. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3012413 · Dec 10, 2024
- [3012414AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152753542620250106202759.0001): Nut, Self-Locking, 12 Point. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3012414 · Dec 10, 2024
- [3012414AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117377138920250106202801.0001): Nut, Self-Locking, 12 Point. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3012412 · Dec 10, 2024
- [TA3057-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID161272206620230515183738.0001): Turbine Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · May 5, 2023
- [TA3057-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146529815220230515183804.0001): Turbine Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · May 5, 2023
- [540-1407-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149574330120240306163319.0001): Valve, Bleed (Small PT6). Honeywell International Inc. · PMA PQ1222NM · Replaces 3049038-02 · Apr 14, 2023
- [3107464-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID159540502420220617132926.0001): Washer, Key. CORE PARTS LLC · PMA PQ05326NM · Replaces 3107464-01 · Jan 31, 2022
- [3028453CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135697198420220617132925.0001): Washer, Key. CORE PARTS LLC · PMA PQ05326NM · Replaces 3028453 · Jan 31, 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
- [RM540-1543-1](https://drs.faa.gov/browse/excelExternalWindow/F5F4D5E21769B2318625858300359927.0001): Bushing, Split. Rimark Manufacturing · PMA PQ10018NE · Replaces 540-1543-1 · Nov 26, 2019
- [RM540-1559-1](https://drs.faa.gov/browse/excelExternalWindow/B1F2413C965AB2D486258583003598D8.0001): Plate, Locking. Rimark Manufacturing · PMA PQ10018NE · Replaces 540-1559-1 · Nov 26, 2019
- [RM540-1185-1](https://drs.faa.gov/browse/excelExternalWindow/23EA699E05BB9FD88625858300359845.0001): Diaphragm. Rimark Manufacturing · PMA PQ10018NE · Replaces 540-1185-1 · Nov 26, 2019
- [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
- [RM540-1559-1](https://drs.faa.gov/browse/excelExternalWindow/BDD1D957E67068D98625815C00653560.0001): Plate, Locking. Rimark Manufacturing · PMA PQ10018NE · Replaces 540-1559-1 · Jul 2, 2017
- [RM540-1543-1](https://drs.faa.gov/browse/excelExternalWindow/A84C88DA34ABABCF86258137005F95C3.0001): Bushing, Split. Rimark Manufacturing · PMA PQ10018NE · Replaces 540-1543-1 · May 17, 2017
- [E3100236-01](https://drs.faa.gov/browse/excelExternalWindow/CA260BD0E54262F88625836A00502BA1.0001): Ring, Sealing, Power Output Section. Extex Engineered Products Inc · PMA PQ2203NM · Replaces 3100236-01 · Sep 7, 2016
- [3114464-01TA](https://drs.faa.gov/browse/excelExternalWindow/28C88D05FD7761658625836A005030CF.0001): Housing, Compressor Turbine Shroud Supplement 140. Extex Engineered Products Inc · PMA PQ2203NM · Replaces 3114464-01 · Sep 7, 2016
- [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
- [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
- [P97-031-933-000](https://drs.faa.gov/browse/excelExternalWindow/378C092419D2DE3986257BC7004860A7.0001): Seal Assembly. Eaton Aerospace, Conveyance Systems Division Centurion  Mechanical Seals · PMA PQ0558NE · Replaces 99-4944 · Aug 7, 2013
- [572744-28](https://drs.faa.gov/browse/excelExternalWindow/7EB29D49BA73463986257C23007821F2.0001): Fuel Filter Element Assembly. Purolator Facet Inc (formerly Facet Filter Products) · PMA PQ1207CE · Replaces Pratt & Whitney Canada P/N 3070220-01… · May 29, 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

All of them: https://openairdocs.org/engine/u-a-canada-pt6a-6-c20/pma.md

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