# Pratt & Whitney Canada PT6A-45B

- Type: Engine model (FAA registry)
- Registry codes: 52270, 61598
- Manufacturer (registry): P&W CANADA
- Model: PT6A-45B
- Engine type: Turbo-prop
- Power: 1,173 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/pratt-whitney-canada-pt6a-45b

Model codes come from the FAA registry's reference file. The FAA lists this model under more than one registry code, usually for different spellings of the maker. This page covers them all.

## 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 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

## Information bulletins (advisory) (1)

- [SAIB NE-15-21](https://openairdocs.org/saib/NE-15-21): Fuel Injector Nozzle. Issued Aug 19, 2015

## 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 (7)

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

- [SDR DATA20130813004](https://openairdocs.org/sdr/DATA20130813004), Aug 13, 2013: ENGINE. FAILED. DURING CRUISE FLIGHT, CREW EXPERIENCED A DROP IN TORQUE ON RT ENGINE, FOLLOWED BY FLUCTUATING TORQUE AND RISING ITT. SHUTDOWN ENGINE, DECLARED EMERGENCY, AND PE
- [SDR HSYA2013041113](https://openairdocs.org/sdr/HSYA2013041113), Apr 11, 2013: GOVERNOR. FAILED. PILOT REPORTED LT ENGINE WOULD ONLY PRODUCE 1600 LBS OF TORQUE AT MOST. THE TAKEOFF WAS ABORTED AND ACFT RETURNED TO THE PARKING RAMP WITHOUT FURTHER INCIDENT A
- [SDR HSYA2012100512](https://openairdocs.org/sdr/HSYA2012100512), Oct 5, 2012: ENGINE. FAILED. AFTER LEVELING OFF AT 9,000 FT, CREW OBSERVED A FLAME COME OUT OF NR 1 ENGINE, FOLLOWED BY THE GENERATOR LIGHT ILLUMINATING, AND ENGINE SPOOLING DOWN. FOLLOWED 
- [SDR HSYA201272512](https://openairdocs.org/sdr/HSYA201272512), Jul 25, 2012: DOWNLOCK. CONTAMINATED. FOUND LT DOWNLOCK MECHANISM WOULD NOT RETRACT BECAUSE OF EXCESSIVE GREASE. CLEANED EXCESSIVE GREASE FROM DOWNLOCK MECHANISM PISTON AND PERFORM LANDING GEAR OPER
- [SDR HSYA2012050412](https://openairdocs.org/sdr/HSYA2012050412), May 4, 2012: BOLT. FAILED. DURING TAXI, RT POWER LEVER HAD SEVERE VIBRATION. RETURNED TO RAMP. INSPECTED NR 2 ENG & PROP. FOUND 3 PROP BOLTS FRACTURED AND/OR SHEARED. ACFT GROUNDED. PERFO
- [SDR HSYA20100225](https://openairdocs.org/sdr/HSYA20100225), Feb 25, 2010: SKIN. CORRODED. DURING 4800/9600 HR STRUCTURAL INSP OF ACFT, THE FOLLOWING CORROSION WAS FOUND AND REPAIRED. CORROSION THROUGH SKIN AT FRAME/FUSELAGE STA 289.92-RT OF CENTERLIN
- [SDR HSYA2010022310](https://openairdocs.org/sdr/HSYA2010022310), Feb 23, 2010: LONGERON. CRACKED. DURING 4800/9600 HOUR STRUCTURAL INSP, DISCOVERED LONGERON AT FUSELAGE STA 127 LT SIDE CRACKED APPROX 3 INCHES. REMOVED DAMAGED LONGERON FRAME AT FUSELAGE STA 1

## 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 SE00006EN](https://openairdocs.org/stc/SE00006EN): Instructions for Continued Airworthiness for the PT6A-45A, -45B, and, -45R 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 SE00014EN](https://openairdocs.org/stc/SE00014EN): Installation of the Pratt & Whitney Engine Services, Inc. CrossCheck Engine Monitor Kit P/N HUMS-K-071-1, Rev. A on the specified PT6A engine models and kit P/N HUMS-K-071-2 on the specified A250 engine models. Pratt & Whitney Engine Services Inc
- [STC SE00020EN](https://openairdocs.org/stc/SE00020EN): Installation of the Pratt & Whitney Engine Services, Inc. TrendCheck/ TrendCheck Plus Engine Monitor Kit P/N TREND-K-010-1. Pratt & Whitney Engine Services Inc
- [STC SE615GL](https://openairdocs.org/stc/SE615GL): Incorporation of a fuel flow transducer. Shadin Avionics
- [STC SE01805NY](https://openairdocs.org/stc/SE01805NY): Installation of Fuel Nozzle Adapters using studs and nuts. Atlantic Turbines International Inc
- [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

## PMA parts (OpenAirDocs) (498, 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.

- [3005293CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID122934446820260909150736.0001): Insert, Fuel Control Drive Shaft. Core Parts LLC · PMA PQ05326NM · Replaces 3005293 · Aug 17, 2026
- [3019136CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID186981497620260728184309.0001): Ring, Plastic. Core Parts LLC · PMA PQ05326NM · Replaces 3019136 · Jul 10, 2026
- [3012928CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID185594574320260728184309.0001): Spacer, Stepped. Core Parts LLC · PMA PQ05326NM · Replaces 3012928 · Jul 10, 2026
- [3022834CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID159372011320260528133243.0001): Sleeve, First Stage Reduction Carrier. Core Parts LLC · PMA PQ05326NM · Replaces 3022834 · Apr 17, 2026
- [ST3277-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199989902020260311145336.0001): Gasket, Starter Generator. Core Parts LLC · PMA PQ05326NM · Replaces ST3277-01 · Feb 26, 2026
- [ST3276-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID101621452020260311145336.0001): Gasket, Four-Hole. Core Parts LLC · PMA PQ05326NM · Replaces ST3276-01 · Feb 26, 2026
- [3021848CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181188254020260217165221.0001): Spacer, Oil Slinger. Core Parts LLC · PMA PQ05326NM · Replaces 3021848 · Feb 11, 2026
- [3109585-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117456133120260217165221.0001): Spacer, Oil Slinger. Core Parts LLC · PMA PQ05326NM · Replaces 3109585-01 · Feb 11, 2026
- [3071525CL05CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191547720920260108163325.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL05 · Dec 2, 2025
- [3071525CL18CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID185573802520260108163328.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL18 · Dec 2, 2025
- [3071525CL03CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID174909813520260108163325.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL03 · Dec 2, 2025
- [3071525CL20CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171652992220260108163329.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL20 · Dec 2, 2025
- [3071525CL10CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID159989189920260108163326.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL10 · Dec 2, 2025
- [3071525CL19CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID139378280520260108163329.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL19 · Dec 2, 2025
- [3071525CL02CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID137870383220260108163324.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL02 · Dec 2, 2025
- [3071525CL04CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID137213529520260108163325.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL04 · Dec 2, 2025
- [3071525CL15CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135506587020260108163328.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL15 · Dec 2, 2025
- [3071525CL06CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID131161134620260108163325.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL06 · Dec 2, 2025
- [3071525CL11CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID122778807720260108163327.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL11 · Dec 2, 2025
- [3071525CL12CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID121271677720260108163327.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL12 · Dec 2, 2025
- [3071525CL16CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120828516420260108163328.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL16 · Dec 2, 2025
- [3071525CL08CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID118296728320260108163326.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL08 · Dec 2, 2025
- [3071525CL07CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID115235373920260108163326.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL07 · Dec 2, 2025
- [3071525CL13CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113265498620260108163327.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL13 · Dec 2, 2025
- [3071525CL01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID110231590920260108163324.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL01 · Dec 2, 2025
- [3071525CL09CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID109630983320260108163326.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL09 · Dec 2, 2025
- [3071525CL17CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID102733333020260108163328.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL17 · Dec 2, 2025
- [3071525CL14CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID101649474220260108163327.0001): Shroud Segment, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3071525CL14 · Dec 2, 2025
- [3010880CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID111084696520260108163216.0001): Gasket, Igniter. CORE PARTS LLC · PMA PQ05326NM · Replaces 3010880 · Oct 16, 2025
- [3018008CL3AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID195594091320251113202147.0001): Weight, Turbine, Balance. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3018008CL3 · Sep 23, 2025
- [3018008CL5AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID176043530320251113202147.0001): Weight, Turbine, Balance. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3018008CL5 · Sep 23, 2025
- [3018008CL4AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167757909020251113202147.0001): Weight, Turbine, Balance. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3018008CL4 · Sep 23, 2025
- [3018008CL2AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID160336366220251113202147.0001): Weight, Turbine, Balance. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3018008CL2 · Sep 23, 2025
- [3018008CL1AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID143949810220251113202146.0001): Weight, Turbine, Balance. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3018008CL1 · Sep 23, 2025
- [3034292WFC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID166533215020250624152909.0001): Disposable Oil Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3034292, 3034293, 3958257-01, 3028419… · Jun 2, 2025
- [3034507WFC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID141045710620250624152910.0001): Cleanable Oil Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3017383, 3020967, 3022069, 3022070… · Jun 2, 2025
- [3034393WFC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100181403420250624152909.0001): Disposable Oil Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3034393, 3033315, 3059257-01, 3028419… · 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
- [3109767-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180344174520260108163021.0001): Seal, Air, Power Turbine Rotor. CORE PARTS LLC · PMA PQ05326NM · Replaces 3109767-01 · May 15, 2025
- [3115091-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180857219920250923184724.0001): Ball, Plastic, 0.750. CORE PARTS LLC · PMA PQ05326NM · Replaces 3115091-01 · Feb 13, 2025
- [3058971-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID110906306720250923184724.0001): Valve Assy, Oil Filler Tube. CORE PARTS LLC · PMA PQ05326NM · Replaces 3058971-01 · Feb 13, 2025
- [3049870-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120826506620260108162918.0001): Washer, Key. CORE PARTS LLC · PMA PQ05326NM · Replaces 3049870-01 · Jan 17, 2025
- [3049869-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117447801820260108162917.0001): Washer, Key. CORE PARTS LLC · PMA PQ05326NM · Replaces 3049869-01 · Jan 17, 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
- [3110741-02CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169885030720250605164146.0001): Ring, Retaining, Compressor Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3110741-02 · Oct 31, 2024
- [3105135-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182128581420241202221130.0001): Washer, Flat. CORE PARTS LLC · PMA PQ05326NM · Replaces 3105135-01 · Aug 22, 2024
- [3012675AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID196954661720240919140845.0001): Nut, Self-Locking, Hex. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3012675, 3005816, 3012674, 3028286… · Aug 7, 2024

All of them: https://openairdocs.org/engine/pratt-whitney-canada-pt6a-45b/pma.md

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