# Pratt & Whitney PT6A-27 series

- Type: Engine model (FAA registry)
- Registry code: 52141
- Manufacturer (registry): P & W
- Model: PT6A-27
- Engine type: Turbo-prop
- Power: 680 hp
- Installed in: 28 registered aircraft
- Page: https://openairdocs.org/engine/pratt-whitney-pt6a-27-series

The registry names only the engine series, so ADs for every model in the series are matched.

## 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 2014-11-05](https://openairdocs.org/ad/2014-11-05): Reinforcement liner to the power turbine (PT) containment   
  ring and, for certain PT containment rings, adding scallops · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 18 more. Effective Aug 5, 2014
- [AD 2011-25-12](https://openairdocs.org/ad/2011-25-12): Sun gear · Pratt & Whitney Canada PT6A-15AG, PT6A-27, PT6A-28 and 4 more. Effective Dec 28, 2011
- [AD 2011-20-51](https://openairdocs.org/ad/2011-20-51): Gears · Pratt & Whitney Canada PT6A-15AG, PT6A-27, PT6A-28 and 4 more. Effective Nov 1, 2011
- [AD 2002-23-13](https://openairdocs.org/ad/2002-23-13): Turbine Exhaust Ducts · Pratt & Whitney Canada PT6A-11, PT6A-110, PT6A-112 and 20 more. Effective Dec 31, 2002
- [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 90-12-05](https://openairdocs.org/ad/90-12-05): Engine Overhaul · Pratt & Whitney Canada PT6A-15AG, PT6A-27, PT6A-28 and 3 more. Effective May 30, 1990
- [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 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
- [AD 69-23-06](https://openairdocs.org/ad/69-23-06): Fuel Pumps · Pratt & Whitney Canada PT6A-20, PT6A-27, PT6A-28 and 4 more. Effective Nov 15, 1969

## 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 (28)

- [N105DE](https://openairdocs.org/aircraft/N105DE): [Globe Aero LLC](https://openairdocs.org/faa-owner/GLOBE%20AERO%20LLC), [Lakeland, FL](https://openairdocs.org/faa-place/FL/Lakeland), built 2026, S/N 46020105
- [N156PC](https://openairdocs.org/aircraft/N156PC): [Idaho Skyworks LLC](https://openairdocs.org/faa-owner/IDAHO%20SKYWORKS%20LLC), [Walnut Creek, CA](https://openairdocs.org/faa-place/CA/Walnut%20Creek), built 1976, S/N 777
- [N178GC](https://openairdocs.org/aircraft/N178GC): [Rigidworks LLC](https://openairdocs.org/faa-owner/RIGIDWORKS%20LLC), [Anaconda, MT](https://openairdocs.org/faa-place/MT/Anaconda), built 1980, S/N 697
- [N23416](https://openairdocs.org/aircraft/N23416): [Woodley Aerial Leasing LLC](https://openairdocs.org/faa-owner/WOODLEY%20AERIAL%20LEASING%20LLC), [Walnut, IL](https://openairdocs.org/faa-place/IL/Walnut), built 1981, S/N 301-0385
- [N241SA](https://openairdocs.org/aircraft/N241SA): [Diamond Bar LLC](https://openairdocs.org/faa-owner/DIAMOND%20BAR%20LLC), [Kirkland, WA](https://openairdocs.org/faa-place/WA/Kirkland), built 1977, S/N 556
- [N3160X](https://openairdocs.org/aircraft/N3160X): [Woodley Aerial Leasing LLC](https://openairdocs.org/faa-owner/WOODLEY%20AERIAL%20LEASING%20LLC), [Walnut, IL](https://openairdocs.org/faa-place/IL/Walnut), built 1983, S/N 301-0479
- [N3657T](https://openairdocs.org/aircraft/N3657T): [Central Planes Aviation Inc](https://openairdocs.org/faa-owner/CENTRAL%20PLANES%20AVIATION%20INC), [Sauk Centre, MN](https://openairdocs.org/faa-place/MN/Sauk%20Centre), built 1980, S/N 301-0316
- [N418AV](https://openairdocs.org/aircraft/N418AV): [Wells Fargo Trust Co Na Trustee](https://openairdocs.org/faa-owner/WELLS%20FARGO%20TRUST%20CO%20NA%20TRUSTEE), [Columbia, MD](https://openairdocs.org/faa-place/MD/Columbia), built 1977, S/N 521
- [N4532F](https://openairdocs.org/aircraft/N4532F): [Woodley Aerial Leasing LLC](https://openairdocs.org/faa-owner/WOODLEY%20AERIAL%20LEASING%20LLC), [Walnut, IL](https://openairdocs.org/faa-place/IL/Walnut), built 1990, S/N 401-0769
- [N469TS](https://openairdocs.org/aircraft/N469TS): [Desert Sand Aircraft Leasing Co Inc](https://openairdocs.org/faa-owner/DESERT%20SAND%20AIRCRAFT%20LEASING%20CO%20INC), [Rosharon, TX](https://openairdocs.org/faa-place/TX/Rosharon), built 1968, S/N 149
- [N562CP](https://openairdocs.org/aircraft/N562CP): [Vantage Air Corp](https://openairdocs.org/faa-owner/VANTAGE%20AIR%20CORP), [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell), built 1977, S/N 562
- [N62DB](https://openairdocs.org/aircraft/N62DB): [Wattum Investments LLC](https://openairdocs.org/faa-owner/WATTUM%20INVESTMENTS%20LLC), [Kodiak, AK](https://openairdocs.org/faa-place/AK/Kodiak), built 1965, S/N 1578TB7
- [N633AR](https://openairdocs.org/aircraft/N633AR): [Twin Otter Support Services LLC](https://openairdocs.org/faa-owner/TWIN%20OTTER%20SUPPORT%20SERVICES%20LLC), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1979, S/N 633
- [N662AV](https://openairdocs.org/aircraft/N662AV): [Berry Aviation Inc](https://openairdocs.org/faa-owner/BERRY%20AVIATION%20INC), [San Marcos, TX](https://openairdocs.org/faa-place/TX/San%20Marcos), built 1980, S/N 662
- [N675BA](https://openairdocs.org/aircraft/N675BA): [Berry Aviation Inc](https://openairdocs.org/faa-owner/BERRY%20AVIATION%20INC), [San Marcos, TX](https://openairdocs.org/faa-place/TX/San%20Marcos), built 1980, S/N 675
- [N692AR](https://openairdocs.org/aircraft/N692AR): [N692ar LLC](https://openairdocs.org/faa-owner/N692AR%20LLC), [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell), built 1980, S/N 692
- [N69359](https://openairdocs.org/aircraft/N69359): [Red Leasing LLC](https://openairdocs.org/faa-owner/RED%20LEASING%20LLC), [Juneau, AK](https://openairdocs.org/faa-place/AK/Juneau), built 1967, S/N 1661TB35
- [N6WL](https://openairdocs.org/aircraft/N6WL): [Aurora Air LLC](https://openairdocs.org/faa-owner/AURORA%20AIR%20LLC), [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell), built 1975, S/N 743
- [N73085](https://openairdocs.org/aircraft/N73085): [Woodley Aerial Leasing LLC](https://openairdocs.org/faa-owner/WOODLEY%20AERIAL%20LEASING%20LLC), [Walnut, IL](https://openairdocs.org/faa-place/IL/Walnut), built 1985, S/N 301-0636
- [N776PC](https://openairdocs.org/aircraft/N776PC): [Technical Applications & Consulting LLC](https://openairdocs.org/faa-owner/TECHNICAL%20APPLICATIONS%20%26%20CONSULTING%20LLC), [Topeka, KS](https://openairdocs.org/faa-place/KS/Topeka), S/N 775
- [N80LH](https://openairdocs.org/aircraft/N80LH): [Lochsa Aviation LLC](https://openairdocs.org/faa-owner/LOCHSA%20AVIATION%20LLC), [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula), built 1978, S/N 801
- [N8791S](https://openairdocs.org/aircraft/N8791S): [Woodley Aerial Leasing LLC](https://openairdocs.org/faa-owner/WOODLEY%20AERIAL%20LEASING%20LLC), [Walnut, IL](https://openairdocs.org/faa-place/IL/Walnut), built 1979, S/N 301-0194
- [N8907S](https://openairdocs.org/aircraft/N8907S): [Woodley Aerial Leasing LLC](https://openairdocs.org/faa-owner/WOODLEY%20AERIAL%20LEASING%20LLC), [Walnut, IL](https://openairdocs.org/faa-place/IL/Walnut), built 1979, S/N 301-0230
- [N907KW](https://openairdocs.org/aircraft/N907KW): [Wattum Investments LLC](https://openairdocs.org/faa-owner/WATTUM%20INVESTMENTS%20LLC), [Kodiak, AK](https://openairdocs.org/faa-place/AK/Kodiak), built 1968, S/N 1691TB59
- [N9295](https://openairdocs.org/aircraft/N9295): [Bank Of Utah Trustee](https://openairdocs.org/faa-owner/BANK%20OF%20UTAH%20TRUSTEE), [Salt Lake City, UT](https://openairdocs.org/faa-place/UT/Salt%20Lake%20City), built 1977, S/N 532
- [N93JJ](https://openairdocs.org/aircraft/N93JJ): [Avstar Inc](https://openairdocs.org/faa-owner/AVSTAR%20INC), [Seattle, WA](https://openairdocs.org/faa-place/WA/Seattle), built 1988, S/N 861
- [N96JC](https://openairdocs.org/aircraft/N96JC): [Adonai International Ministries](https://openairdocs.org/faa-owner/ADONAI%20INTERNATIONAL%20MINISTRIES), [Marine, IL](https://openairdocs.org/faa-place/IL/Marine), built 1988, S/N 858
- [N994AH](https://openairdocs.org/aircraft/N994AH): [Aerospace Asset Holdings LLC](https://openairdocs.org/faa-owner/AEROSPACE%20ASSET%20HOLDINGS%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1970, S/N U141

## NTSB investigations (12)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR25LA038](https://openairdocs.org/ntsb/WPR25LA038), Nov 15, 2024: Dehavilland DHC-6-300 (N241SA), Boulder City, NV, substantial damage. Probable cause: A loss of directional control during the landing roll in gusting crosswind conditions.
- [NTSB ERA22LA255](https://openairdocs.org/ntsb/ERA22LA255), Jun 1, 2022: Air Tractor AT-400A (N3658T), Pemberton Township, NJ, substantial damage. Probable cause: The pilot’s improper landing flare, which resulted in a hard, bounced landing and a subsequent loss of control.
- [NTSB WPR20CA112](https://openairdocs.org/ntsb/WPR20CA112), Mar 6, 2020: De Havilland DHC6 (N72GC), Boulder City, NV, substantial damage. Probable cause: The trainee pilot's loss of directional control during landing and his subsequent unintentional control interference with the brakes and/or rudder during the trainer pilot's attempted remedial…
- [NTSB ANC18LA027](https://openairdocs.org/ntsb/ANC18LA027), Mar 21, 2018: Dehavilland DHC 6 Twin Otter (N716JP), Arctic Ocean, substantial damage. Probable cause: The flight crew's improper decision to deliberately operate the airplane at low altitude and along a flightpath that resulted in a collision with a pedestrian after takeoff. Contributing to the…
- [NTSB CEN17LA330](https://openairdocs.org/ntsb/CEN17LA330), Aug 24, 2017: Air Tractor AT 401 (N4532F), Pearsall, TX, substantial damage. Probable cause: The fatigue crack of an engine cylinder, which resulted in a partial loss of engine power.
- [NTSB ERA15LA343](https://openairdocs.org/ntsb/ERA15LA343), Sep 6, 2015: Dehavilland DHC-6 (N181CS), Louisburg, NC, substantial damage. Probable cause: The propeller’s movement to the beta position during landing for reasons that could not be determined during postaccident examination and testing, which resulted in an attempted go-around and…
- [NTSB CEN13LA239](https://openairdocs.org/ntsb/CEN13LA239), Apr 24, 2013: Air Tractor AT-301 (N23416), Bowling Green, MO, substantial damage. Probable cause: The failure of the engine supercharger's rear bearing, which resulted in the loss of engine power.
- [NTSB ENG11IA032](https://openairdocs.org/ntsb/ENG11IA032), May 21, 2011: Dehavilland DHC-6-300 (N178GC), Peach Springs, AZ, incident, no damage. Probable cause: A quality control failure in the Sungear, Inc. manufacturing and quality control process allowed sungears with surface finishes of the root fillet radius of the spline that did not conform to the…
- [NTSB DEN00FA085](https://openairdocs.org/ntsb/DEN00FA085), May 5, 2000: de Havilland DHC-6-300 (N241SA), Monument Valley, UT, substantial damage. Probable cause: The pilot-in-command's failure to maintain directional control. A factor was wind shear.
- [NTSB ANC99LA064](https://openairdocs.org/ntsb/ANC99LA064), May 25, 1999: de Havilland DHC-6-300 (N72GC), Anchorage, AK, substantial damage. Probable cause: An in-flight collision with a bird.
- [NTSB FTW91DRD04](https://openairdocs.org/ntsb/FTW91DRD04), May 10, 1991: Air Tractor AT 301 (N3658T), Lake Providence, LA, substantial damage. Probable cause: A LOSS OF ENGINE POWER FOR UNDETERMINED REASONS RESULTING IN A FORCED LANDING AND NOSE OVER ON LANDING.
- [NTSB SEA79DYA27](https://openairdocs.org/ntsb/SEA79DYA27), Aug 10, 1979: Air Tractor AT-301 (N8791S), Newdale, ID, substantial damage

## FAA accident and incident reports (21)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Accident 20241115019979A](https://openairdocs.org/incident/20241115019979A), Nov 15, 2024: Dehavilland DHC-6-300 (N241SA), Boulder City, NV, Substantial damage. On November 15, 2024, at 09:15 pacific standard time (PST), a Dehavilland DHC-6-300, experienced a loss of directional control that resulted in a runway…
- [Incident 20241007013539I](https://openairdocs.org/incident/20241007013539I), Oct 7, 2024: Dehavilland DHC-6-300 (N70AR), Tulsa, OK, Minor damage. At approximately 1900 local time on October 7, 2024, a Dehavilland DHC-6-300 landed at Tulsa Riverside (krvs) runway 1L. During roll-out, the pilot engaged…
- [Accident 20220601005089A](https://openairdocs.org/incident/20220601005089A), Jun 1, 2022: Air Tractor Inc AT-400A (N3658T), Pemberton, NJ, Substantial damage. While landing at the agricultural operators main operating base the pilot landed hard, bounced twice, lost control and veered to the right and impacted a ditch.
- [Accident 20200306001489A](https://openairdocs.org/incident/20200306001489A), Mar 6, 2020: Dehavilland DHC-6-300 (N72GC), Boulder City, NV, Substantial damage. On March 6, 2020, at approximately 11:15 local time, N72GC landed on runway 27 at the Boulder City airport (bvu) during a training flight. A pilot under the…
- [Accident 20180320009749A](https://openairdocs.org/incident/20180320009749A), Mar 20, 2018: Dehavilland DHC-6 TWIN OTTER (N716JP), Deadhorse, AK, Substantial damage. At approximately 1945 on March 20, 2018 a part 135 flight with three passengers onboard departed a remote ice strip approximately 140 miles north of prudhoe…
- [Accident 20170824013639A](https://openairdocs.org/incident/20170824013639A), Aug 24, 2017: Air Tractor Inc AT-401 (N4532F), Pearsall, TX, Substantial damage. Aircraft departed from T30 airfield in Pearsall, TX for a routine agricultural spraying application. During the flight, the aircraft lost power and made an…
- [Accident 20150906023729A](https://openairdocs.org/incident/20150906023729A), Sep 6, 2015: Dehavilland DHC-6-200 (N181CS), Louisberg, NC, Destroyed. During landing, N181CS, a Dehavilland twin otter, DHC-6-200, s/n 181, departed the runway surface at approximately 30 degrees to the right of the runway…
- [Accident 20130424012379A](https://openairdocs.org/incident/20130424012379A), Apr 24, 2013: Air Tractor Inc AT-301 (N23416), Bowling Green, MO, Substantial damage. Amendment to original report: On July 25, 2013 the NTSB received a teardown report from covington aircraft in okmulgee, OK. The supercharger unit was sent to…
- [Incident 20130420006809I](https://openairdocs.org/incident/20130420006809I), Apr 20, 2013: Air Tractor Inc AT-301 (N3658T), Pantego, NC, Minor damage. Upon landing at a private airstrip the pilot was unable to maintain directional control due to right crosswind. The airplane exited the right side of the…
- [Incident 20121027023439I](https://openairdocs.org/incident/20121027023439I), Oct 27, 2012: Dehavilland DHC-6 TWIN OTTER (N716JP), Wainwright, AK, No damage. The operator was conducting survey operations which require the aircraft to be flown at a specfic speed and altitude. The pilot was in the process of slowing…
- [Incident 20110521010689I](https://openairdocs.org/incident/20110521010689I), May 21, 2011: Dehavilland DHC-6-300 (N178GC), Minor damage. N178GC was in cruise flight on an air tour of the Grand Canyon when the flight crew reported hearing a loud squealing noise coming from the left engine,…
- [Incident 20060525008939I](https://openairdocs.org/incident/20060525008939I), May 25, 2006: Airtrc AT301 (N23416), Independence, KS, Minor damage. (-23) On may 25, 2006 at about 0945 an air-tractor 301, loaded with about 300 gallons of chemical experienced a power loss just after takeoff and about 200…
- [Incident 20050911023629I](https://openairdocs.org/incident/20050911023629I), Sep 11, 2005: Dhav DHC6300 (N241SA), Las Vegas, NV, Minor damage. (-23) On September 11, 2005 at approimately 1243 PDT, this de havilland twin otter, being operated on a scheduled air carrier flight, exited the runway on…
- [Accident 20000505006739A](https://openairdocs.org/incident/20000505006739A), May 5, 2000: Dhav DHC6300 (N241SA), Monument Valley, UT, Substantial damage. (-23) During takeoff on runway 34 at 25 knots, the aircraft was hit by strong wind gusts. Winds were from 210 to 250 degrees gusting to 15 knots amplified by…
- [Accident 19990525021539A](https://openairdocs.org/incident/19990525021539A), May 25, 1999: Dhav DHC6300 (N72GC), Anchorage, AK, Substantial damage. On may 25, 1999, about 0005 Alaska daylight time, a Dehavilland DHC-6-300 airplane, N72GC, sustained substantial damage during the downwind portion of the…
- [Incident 19920507016089I](https://openairdocs.org/incident/19920507016089I), May 7, 1992: Airtrc AT301 (N8791S), Big Sandy, MT, Minor damage. Aircraft nosed over and came to rest inverted on landing rollout. Pilot had inadvertently locked brakes in flight.
- [Accident 19910510015479A](https://openairdocs.org/incident/19910510015479A), May 10, 1991: Airtrc AT301 (N3658T), Lake Providence, LA, Substantial damage. Crashed and flipped over during a spray run. Indications are fuel exhaustin. Pilot head injury caused amnesia.
- [Incident 19900605018509I](https://openairdocs.org/incident/19900605018509I), Jun 5, 1990: Airtrc AT301 (N3658T), Providence, LA, Minor damage. Engine lost power on climb. Dumped load. Force landing in field. Came to rest inverted. NR4 cylinder was cracked.
- [Incident 19890303022889I](https://openairdocs.org/incident/19890303022889I), Mar 3, 1989: Dhav DHC6300 (N241SA), Las Vegas, NV, Minor damage. On landing rollout a gust turned aircraft toward a ditch, crossed it and hit cargo trailer. Minor damage.
- [Incident 19840827051969I](https://openairdocs.org/incident/19840827051969I), Aug 27, 1984: Airtrc AT301 (N8907S), Jonesville, LA, Minor damage. Smoke from engine and power loss. Nosed over on forced landing. Newly overhauled engine had major intenal failure.
- [Accident 19790810021439A](https://openairdocs.org/incident/19790810021439A), Aug 10, 1979: Airtrc AT301 (N8791S), Newdale, ID, Substantial damage. Attempted to takeoff with aircraft 1132 pounds over gross.

## Service difficulty reports (642, newest 50)

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

- [SDR 2026F00209](https://openairdocs.org/sdr/2026F00209), Sep 16, 2026: FUEL LINE. KINKED. FWD FUEL FLOW FLUCTUATING DURING TAKE OFF ROLL, ABORTED TAKE OFF AND RETURNED TO GATE.
- [SDR TIMA20251226004](https://openairdocs.org/sdr/TIMA20251226004), Dec 23, 2025: ELECTRICAL BOX. CONTAMINATED. WHILE IN CRUISE FLIGHT THE CIRCUIT BREAKER PANEL STARTED SMOKING. PILOT REQUESTED APPROACH FOR PRIORITY IN HELENA, MT. PILOT SAID THE SMOKE SHORTLY STOPPED AFTE
- [SDR S9BA2025121500004](https://openairdocs.org/sdr/S9BA2025121500004), Dec 12, 2025: GASKET. BURNED. FLT/CREW REPORTED - UPON SETTING CRUISE POWER APPROX. 3 MINUTES AFTER ON FLIGHT # BB - 186 SPB / SSB " FIRE WARNING R ENGINE WITH NO EVIDENCE OF FIRE. THIS A RE
- [SDR S9BA202512080003](https://openairdocs.org/sdr/S9BA202512080003), Dec 4, 2025: FIRE DETECTOR. OUT OF TOLERANCE. FLT/CREW REPORTED - UPON LEVELING OUT ON FLIGHT NR BB-136 SSP / SSB RT ENGINE FIRE WARNING LIGHT CAME ON WITH AURAL FIRE BELL WARNING CAME ON ALSO. POWER LEVER 
- [SDR TIMA202309013006](https://openairdocs.org/sdr/TIMA202309013006), Aug 3, 2023: TRANSDUCER. UNKNOWN. AFTER TAKEOFF WHILE CLIMBING THROUGH ROUGHLY 6000 FEET THE TORQUE AND ITT BEGAN TO SLOWLY FALL. AFTER PILOT NOTICED THE DECREASE HE REQUESTED TO GO BACK TOWARD 
- [SDR KCQA20211207](https://openairdocs.org/sdr/KCQA20211207), Nov 29, 2021: BRAKE ASSY. LEAKING. WHILE TAXING THE AIRCRAFT AFTER LANDING THE FLIGHT CREW NOTICED THERE WAS A LOSS OF BRAKING ON THE LH SIDE. FOUND LEAKING BRAKE FLUID OUT OF THE LH BRAKE LINE W
- [SDR HKGA20201001001](https://openairdocs.org/sdr/HKGA20201001001), Oct 1, 2020: NOZZLE. LEAKING. NUMBER 2 ENGINE FLAMED OUT DURING CRUISE FLIGHT. AFTER LANDING MAINTENANCE FOUND THE NUMBER 8 FUEL NOZZLE LEAKING FROM THE TRANSFER TUBES, DUE TO AN INCORRECTLY
- [SDR CA190731030](https://openairdocs.org/sdr/CA190731030), Jul 29, 2019: SWITCH. MALFUNCTIONED. (CAN) DURING THE TAKE-OFF SLIDE, THE AUTO FEATHER SWITCH WOULD NOT ARM. THE PILOTS ABORTED THE TAKE-OFF AND RETURNED TO THE DOCK. THE SWITCH WAS REPLACED, AND T
- [SDR CA190725012](https://openairdocs.org/sdr/CA190725012), Jul 24, 2019: EXHAUST DUCT. DAMAGED. (CAN) THIS ENGINE WAS SENT FOR REPAIR AFTER A POWER TURBINE BLADE DISTRESS WAS REPORTED. IT WAS REPORTED THAT .THE RH ENGINE FAILED WITH A LOUD NOISE .THE POWER
- [SDR 3RAA201903288049](https://openairdocs.org/sdr/3RAA201903288049), Mar 27, 2019: PUSHROD. ABNORMAL. RIGHT ENGINE FCU PUSHROD (FCU CONTROL ROD) ADJUSTMENT TURNBUCKLE JAMNUTS LOOSENED AND THE TURNBUCKLE BACKED OUT LENGTHENING THE PUSHROD OVERALL LENGTH CAUSING L
- [SDR TIMA20170427007](https://openairdocs.org/sdr/TIMA20170427007), Apr 27, 2017: ENGINE. MALFUNCTIONED. DURING CRUISE FLIGHT, THE RIGHT ENGINE DEVELOPED TORQUE FLUCTUATIONS. PILOT NOTED FLUCTUATING OIL PRESSURE READINGS AND AS OIL PRESSURE DROPPED TO ZERO. SHUTDOW
- [SDR S9BA201612040004](https://openairdocs.org/sdr/S9BA201612040004), Dec 2, 2016: DUCT CLAMP. CRACKED. ON TAKEOFF, RIGHT T HANDLE FIRE WARNING.
- [SDR GCNA20160725001](https://openairdocs.org/sdr/GCNA20160725001), Jul 20, 2016: UNKNOWN. ODOR. WHILE IN FLIGHT, CREW SMELLED SMOKE. THE CREW OPENED THE BUS TIE AND ISOLATED THE ELECTRICAL POWER. ACFT RETURNED TO BASE WITHOUT FURTHER INCIDENT. MAINTENANCE 
- [SDR 2016F00123](https://openairdocs.org/sdr/2016F00123), May 7, 2016: WIRE. CHAFED. EXPERIENCED A MASTER WARNING & FIRE INDICATION ON THE NR 2 ENG, SHORTLY AFTER GETTING INTO SOME HEAVY PRECIPITATION. THE PILOT RESET THE MASTER WARNING, BOTH TH
- [SDR CA160317011](https://openairdocs.org/sdr/CA160317011), Feb 28, 2016: STRUT. DAMAGED. (CAN) DURING AN INSPECTION OF THE WING STRUT LOWER ATTACHMENT BOLTS, CORROSION WAS FOUND AT THE LOWER LUG ATTACHMENT POINT ON BOTH THE LT AND RT STRUTS. CORROSI
- [SDR CA160229005](https://openairdocs.org/sdr/CA160229005), Feb 26, 2016: LIGHT. BURNED OUT. (CAN) AIRCRAFT DEPARTED FROM AIRPORT AND CREW SMELLED AND NOTICED SMOKE COMING FROM ONE OF THE OVERHEAD COCKPIT PANELS. AIRCRAFT RETURNED TO AIRPORT AND LANDED 
- [SDR CA160307001](https://openairdocs.org/sdr/CA160307001), Feb 23, 2016: TURBINE BLADES. FRACTURED. (CAN) AFTER TAKE-OFF THE CREW OBSERVED A FLUCTUATION IN THE NR 2 TORQUE INDICATION AND COULD HEAR THE CHANGES IN ENGINE POWER SETTINGS. ALL OTHER PARAMETERS REM
- [SDR CA160212009](https://openairdocs.org/sdr/CA160212009), Feb 11, 2016: TUBE. CORRODED. (CAN) UPON REMOVAL OF TUBE ASSEMBLY-LOWER RUDDER SUPPORT, (C6FS1828-1) FOR CORROSION REMOVAL AND RE CADMIUM PLATING, IT WAS NOTICED THAT THE TUBE ASSEMBLY WAS F
- [SDR CA160208004](https://openairdocs.org/sdr/CA160208004), Feb 8, 2016: EXHAUST DUCT. DAMAGED. (CAN) ENGINE SENT FOR INVESTIGATION DUE TO THE CUSTOMER REPORTED A CRACKED AND DISTORTED EXHAUST DUCT. THE CUSTOMER ELECTED TO OVERHAUL THE ENGINE AT THIS TIME.
- [SDR CA160301027](https://openairdocs.org/sdr/CA160301027), Dec 27, 2015: FCU. LEAKING. (CAN) DURING ENGINE GROUND RUN, EGR, FUEL LEAK FROM FUEL PUMP DRAIN LESS THAN 20 CC MINUTE WAS FOUND. ALSO, LIGHT BLUE DYE WAS FOUND FROM FCU VENT HOLE. FCU AND
- [SDR CA151214008](https://openairdocs.org/sdr/CA151214008), Nov 27, 2015: RECORDER. WRONG PART. (CAN) CVR OUTPUT FROM KMA24H-70 AUDIO PANELS DOES NOT COMPLY WITH EITHER ARINC 557 OR ARINC 757 STANDARDS FOR VOICE RECORDER INPUT LEVELS. INTERFACING AN ARINC 
- [SDR CA151112003](https://openairdocs.org/sdr/CA151112003), Nov 10, 2015: WIRE. CHAFED. (CAN) WIRES FROM DE-ICE BOOT TO CONNECTOR FOUND CHAFFED ON CONNECTOR MOUNTING BRACKET.
- [SDR CA151023001](https://openairdocs.org/sdr/CA151023001), Oct 20, 2015: LEVER. BROKEN. (CAN) DURING TURN AT THE END OF THE RUNWAY, CREW HEARD A THUMP. MAINTENANCE FOUND STEERING LEVER P/N 71-159-9 BROKEN. STEERING LEVER REPLACED, AND STEERING TRAV
- [SDR S9BA2016F00006](https://openairdocs.org/sdr/S9BA2016F00006), Oct 19, 2015: FUEL CONTROL. FAILED. (CGKBR) LEFT ENGINE NOT MAKING 50 PERCENT TORQUE ON LAST FLIGHT CHECKS. REPLACED FUEL PUMP AND FUEL CONTROL.
- [SDR CA151027007](https://openairdocs.org/sdr/CA151027007), Oct 19, 2015: STUD. SHEARED. (CAN) BRACKET C3W25-3 HOLDS TWO STUDS C3W65-3 THAT SECURE THE UPPER AND LOWER AILERON CABLE PULLEYS IN THE OUTBOARD LH WING OF THE TWIN OTTER. ONE OF THE PULLEY
- [SDR CA151121001](https://openairdocs.org/sdr/CA151121001), Oct 19, 2015: ADAPTER. CRACKED. (CAN) AFT ADAPTER ON VERTICAL STABILIZER WAS FOUND CRACKED UPON EXAMINATION CALLED OUT IN PART B OF SERVICE BULLETIN 6/454. INSPECTION REQUIRED EVERY 60 MONTHS.
- [SDR TIMA20151015006](https://openairdocs.org/sdr/TIMA20151015006), Oct 15, 2015: GEAR SET. STRIPPED. DURING CRUISE CLIMB AT APPROX 9000 FT, THE LT ENG SUDDENLY LOST ALL POWER. ACFT RETURNED TO DEPARTURE LOCATION & LANDED WITHOUT INCIDENT. INSPECTION REVEALED TH
- [SDR CA151019002](https://openairdocs.org/sdr/CA151019002), Oct 15, 2015: BOLT. BROKEN. (CAN) STEERING ACTUATOR LINK BOLT P/N 71-146-1 FOUND BROKEN DURING NOSE WHEEL STEERING CABLE INSPECTION. BOLT WAS STILL IN ITS HOLE AND FELL AS IT GOT TOUCHED F
- [SDR S9BA201510170014](https://openairdocs.org/sdr/S9BA201510170014), Oct 12, 2015: TRANSDUCER. MALFUNCTIONED. LT ENGINE ONLY PRODUCING 40 LBS TORQUE ON TAKEOFF. TAKEOFF WAS ABORTED. TORQUE TRANSDUCER WAS REPLACED IAW AMM 79-31.
- [SDR CA150723004](https://openairdocs.org/sdr/CA150723004), Jul 22, 2015: COLLAR. BROKEN. (CAN) PILOT LANDED AND NOTICE THAT NOSE WHEEL STEERING WAS STIFF AND DIFFICULT TO CONTROL. ALSO TILLER POSITION DID NOT CORRESPOND WITH THE DIRECTION AIRCRAFT W
- [SDR S9BA201506180004](https://openairdocs.org/sdr/S9BA201506180004), Jun 18, 2015: ENGINE. POWER LOSS. LT ENGINE LOST POWER ON TAKEOFF, AUDIBLE GRINDING NOISE AND EXCESSIVE VIBRATION CAN BE HEARD AND FELT COMING FROM ENGINE.
- [SDR TIMA20150618001](https://openairdocs.org/sdr/TIMA20150618001), Jun 18, 2015: FITTING. LEAKING. DURING APPROACH FOR LANDING, THE RT ENG OIL PRESS BEGAN FLUCTUATING. OIL PRESS DROPPED TO 40 PSI WITH THROTTLE AT IDLE & THE OIL PRESS ANNUNCIATOR ILLUMINATED. 
- [SDR CA150612009](https://openairdocs.org/sdr/CA150612009), Jun 12, 2015: TURNBUCKLE. CRACKED. (CAN) DURING INSPECTION, FOUR TURNBUCKLES FROM A FLIGHT CONTROL TRIM SYSTEM WERE FOUND CRACKED. ONE MS21251B-5L, TWO MS21251B-2L, & ONE MS21251-B2L. CRACKS ARE 
- [SDR CA150604007](https://openairdocs.org/sdr/CA150604007), May 25, 2015: CONTROL SYSTEM. MALFUNCTIONED. (CAN) IT WAS REPORTED THAT THE LEFT TIRE BLEW OUT DURING LANDING, WHEN THE PILOT HAD TO APPLY THE BRAKE HARD, DUE TO THE LEFT ENGINE COULD NOT BE REVERSED. FURT
- [SDR CA150806008](https://openairdocs.org/sdr/CA150806008), May 15, 2015: BLADE. DAMAGED. (CAN) DURING SCHEDULED MAINTENANCE AFTER HAVING A FOD INCIDENT ON THE OTHER ENGINE, IT WAS DECIDED TO REMOVE THE PROTECTIVE SCREEN AND INSPECT THE COMPRESSOR FO
- [SDR CA150602005](https://openairdocs.org/sdr/CA150602005), May 9, 2015: ENGINE. OVERTORQUED. (CAN) INFLIGHT SHUTDOWN DUE TO ENG OVER TORQUE UP TO 75%. ONGOING POWER SECTION & PROPELLER REPLACEMENT. THE ACFT TO BE FERRIED TO MAIN BASE FOR AUTO FEATHER SY
- [SDR CA150512002](https://openairdocs.org/sdr/CA150512002), May 7, 2015: AUTOFEATHER SYS. FAILED. (CAN) ENGINE NR 2 OVER TORQUED IN FLIGHT & NP WAS HIGH AT APPROX 92%. AS A PRECAUTION, ENG %2 WAS SHUTDOWN IN FLIGHT. THE OVER TORQUE WAS BEYOND 70 PSI FOR AT L
- [SDR CA150421001](https://openairdocs.org/sdr/CA150421001), Apr 18, 2015: LINE. CHAFED. (CAN) UPON INSPECTION OF THE ACFT IT WAS FOUND THAT THE LT SKI UP LINE ON THE LT MLG LEG WAS CHAFED THROUGH WHERE THE LEG EXIT THE FUSELAGE ON AFT FUSELAGE GEAR
- [SDR CA150806007](https://openairdocs.org/sdr/CA150806007), Apr 15, 2015: BLADES. CRACKED. (CAN) PILOT REPORTED CLICKING NOISE COMING FROM ENGINE DURING SHUTDOWN AND TURNING OVER ENGINE.MAINTENANCE INVESTIGATED AND FOUND THERE WAS A NOTICEABLE CLICKIN
- [SDR CA150331010](https://openairdocs.org/sdr/CA150331010), Mar 23, 2015: LEVER. BROKEN. (CAN) THE FLIGHT CREW STATED THAT THE NOSE-WHEEL STEERING WAS HARD TO USE. WHEN THE AME INVESTIGATED HE DISCOVERED THAT THE LEVER ASSY WAS BROKEN ON THE NLG. NO
- [SDR CA150318016](https://openairdocs.org/sdr/CA150318016), Mar 14, 2015: PRESSURE SWITCH. FAILED. (CAN) AFTER ACFT HAD DOCKED, MAINTENANCE NOTICED AN OIL LEAK FROM THE NR 1 ENGINE COWLING. UPON INVESTIGATION IT WAS FOUND THAT THE SOURCE OF THE OIL LEAK WAS T
- [SDR CA150312008](https://openairdocs.org/sdr/CA150312008), Mar 12, 2015: ROD. UNSERVICEABLE. (CAN) DURING ROUTINE MAINTENANCE ACTIVITIES THE AME NOTICED A CRACK IN THE AILERON SERVO ROD. THIS SAME CRACKED AREA ON THE ROD WAS ALSO SWOLLEN AND IT IS SUSPE
- [SDR CA150303001](https://openairdocs.org/sdr/CA150303001), Feb 16, 2015: SHOCK ABSORBER. DEBONDED. (CAN) DURING ACFT "EMMA" INSPECTION ON THE LANDING GEAR, THE ENGINEER FOUND THE LT REBOUND SHOCK ABSORBER ASSY DISBONDED FROM BOTH OF THE MOUNTING PLATES. THE R
- [SDR JIKA2015021001](https://openairdocs.org/sdr/JIKA2015021001), Feb 10, 2015: INDICATOR. SHORTED. IN CRUISE, VISUALLY OBSERVED A SMALL AMOUNT OF SMOKE IN THE COCKPIT & THEN THE LT OIL PRESS CB POPPED. AFTER THE CB POPPED THE SMOKE DISSIPATED. RETURNED & LAND
- [SDR CA150122002](https://openairdocs.org/sdr/CA150122002), Jan 15, 2015: PROBE. FAILED. (CAN) FIRE INDICATION ON LEFT ENGINE IN FLIGHT. FLIGHT CREW DID FIRE PROCEDURES. AIRCRAFT LAND WITH NO INCIDENT. AFTER INSPECTIONS, FOUND 300 DEGREE TEMPERATURE
- [SDR CA141224006](https://openairdocs.org/sdr/CA141224006), Dec 14, 2014: CABLE. WORN. (CAN) DURING THE FIVE YEAR SCHEDULED FLIGHT CONTROL CABLE CHANGE, THE ELEVATOR CABLE IN THE FORWARD NOSE WAS FOUND TO BE INTERFERING ON THE STEC AUTOPILOT PULLE
- [SDR CA141217004](https://openairdocs.org/sdr/CA141217004), Dec 1, 2014: ENGINE. MALFUNCTIONED. (CAN) DURING FINAL APPROACH, THE PILOT RETARDED POWER LEVER (PL) AND NOTICED LEFT HAND ENGINE POWER SUSPENDING AT NP 1900, TQ 750, NG 84%. RIGHT HAND ENGINE HAD
- [SDR CA150422003](https://openairdocs.org/sdr/CA150422003), Nov 28, 2014: LEG ASSY. CORRODED. (CAN) MAIN LANDING GEAR NDT`D BY AUTHORIZED FACILITY PER 5 YEAR INSPECTION REQUIREMENT. PITTING, CORROSION & BOLT FLANGE HOLES OUT OF LIMITS FOUND DURING INTERN
- [SDR CA141201002](https://openairdocs.org/sdr/CA141201002), Nov 25, 2014: ADAPTER. CRACKED. (CAN) WHILE COMPLETING SB 6/454, THE RT REAR STABILIZER ATTACHMENT ADAPTER FOUND CRACKED.(P/N C6FSM 1820-33). THE ATTACHMENT ADAPTOR WAS REPLACED WITH NO ADDITI
- [SDR GCNA20141030001](https://openairdocs.org/sdr/GCNA20141030001), Oct 29, 2014: ENGINE. SHUTDOWN. PILOT TOOKOFF, THEN REPORTED THAT AT 400 FEET AGL AFTER TAKEOFF, CREW HEARD WEIRD NOISES AND FELT PITCH CHANGES. RIGHT TORQUE INDICATED HIGH, WITH RT PROP RPM F

All 642: https://openairdocs.org/engine/pratt-whitney-pt6a-27-series/reports.md

## STCs that may be installed (OpenAirDocs) (26)

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 SE000EN](https://openairdocs.org/stc/SE000EN): Engines will be maintained IAW 'Maintenance or Reliable Engines(MORE) Program,' Rev 4, dated 8/16/95. MORE Company Inc
- [STC SE10552SC](https://openairdocs.org/stc/SE10552SC): Conversion of Pratt & Whitney Canada Corp. Model PT6A-27 or -28 to a Model PT6A-34 turboprop engine. Prime Turbines LLC
- [STC SE02170AT](https://openairdocs.org/stc/SE02170AT): Installation of Pc Safety Valve Kit. Bell Helicopter Textron Inc
- [STC SE11095SC](https://openairdocs.org/stc/SE11095SC): The conversion of the Pratt & Whitney Canada, Model PT6A-27 to a PT6A-34 turboprop engine. R.T. Turbines, 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 SE2960SO](https://openairdocs.org/stc/SE2960SO): Installation of an oil filler cap safety adapter. Jet Avion Corporation
- [STC SE02273NY](https://openairdocs.org/stc/SE02273NY): Conversion of a Pratt & Whitney Canada PT6A-27 or PT6A-28 engine to operate as a PT6A-34 engine. Atlantic Turbines International 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 SE00691NY](https://openairdocs.org/stc/SE00691NY): Conversion of engine models PT6A-27 and -28 to Model PT6A-34 as described in Temporary Overhaul Data Revision. Standard Aero Limited
- [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 SE1122EA](https://openairdocs.org/stc/SE1122EA): Repair of combustion chamber small exit duct, P/N 3012060. Airwork Corporation
- [STC SE7677SW](https://openairdocs.org/stc/SE7677SW): Modifiy the P&W Canada PT-6A-27, -28, -15AG to the PT6A-34 configuration. Airforce Turbine Service
- [STC SE1251GL](https://openairdocs.org/stc/SE1251GL): Conversion of engine Model PT6A-27 to Model PT6A-34. Turbines, Inc
- [STC SE1269EA](https://openairdocs.org/stc/SE1269EA): Stripping and recoating of compressor turbine blades, P/N 3023401, with Walbar Metals, Inc. Airwork Corporation
- [STC SE386NE](https://openairdocs.org/stc/SE386NE): Installation of Turbo Products PMA parts. Audco Corporation
- [STC SE355NE](https://openairdocs.org/stc/SE355NE): Conversion of engine model PT6A-27 to model PT6A-34. Van Dusen Turbine Products
- [STC SE241NE](https://openairdocs.org/stc/SE241NE): Conversion of engine Models PT6A-27 and -28 to 01/157/3. Airwork Corporation
- [STC SE5601SW](https://openairdocs.org/stc/SE5601SW): Replacement splined end and oil mist lubrication on accessory drive gearshaft. Aviall of Texas, Inc
- [STC SE79NE](https://openairdocs.org/stc/SE79NE): Conversion to an aircooled compressor turbine vane ring configuration. 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
- [STC SE4570SW](https://openairdocs.org/stc/SE4570SW): Revise accessory drive spline, P/N 3008181. Aviall of Texas, Inc
- [STC SE12CE](https://openairdocs.org/stc/SE12CE): Installation of Gits Brothers Manufacturing Company dipstick filler cap assembly P/N 02297-2000. Gits Brothers Mfg Co

## PMA parts (OpenAirDocs) (980, 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
- [3005293CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID122934446820260909150736.0001): Insert, Fuel Control Drive Shaft. Core Parts LLC · PMA PQ05326NM · Replaces 3005293 · Aug 17, 2026
- [3006718LA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175946795220260805155436.0001): STRIP, INSULATING. LanAir Research and Development Inc · PMA PQ1031NE · Replaces 3006718 · Jul 24, 2026
- [3006718LA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175946795220260805155436.0001): STRIP, INSULATING. LanAir Research and Development Inc · PMA PQ1031NE · Replaces 3006718 · Jul 24, 2026
- [3019136CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID186981497620260728184309.0001): Ring, Plastic. Core Parts LLC · PMA PQ05326NM · Replaces 3019136 · Jul 10, 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
- [3012928CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID185594574320260728184309.0001): Spacer, Stepped. Core Parts LLC · PMA PQ05326NM · Replaces 3012928 · Jul 10, 2026
- [3045951-02AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135029382220260722151307.0001): Detector, Chip, Magnetic. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3045951-02 · May 27, 2026
- [3045951-02AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135029382220260722151307.0001): Detector, Chip, Magnetic. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3045951-02 · May 27, 2026
- [3012457KT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180930006920260616142156.0001): Seal, Ring, Non-Metallic. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3012457 · Mar 24, 2026
- [3012457KT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180930006920260616142156.0001): Seal, Ring, Non-Metallic. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3012457 · Mar 24, 2026
- [3012456KT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167574484520260616142156.0001): Seal, Ring, Non-Metallic. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3012456 · Mar 24, 2026
- [3012456KT](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167574484520260616142156.0001): Seal, Ring, Non-Metallic. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3012456 · Mar 24, 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
- [ST3277-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199989902020260311145336.0001): Gasket, Starter Generator. Core Parts LLC · PMA PQ05326NM · Replaces ST3277-01 · Feb 26, 2026
- [3028815CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID119353433120260311145425.0001): Sleeve, Propeller Shaft, Oil Transfer. Core Parts LLC · PMA PQ05326NM · Replaces 3028815 · Feb 26, 2026
- [3028815CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID119353433120260311145425.0001): Sleeve, Propeller Shaft, Oil Transfer. Core Parts LLC · PMA PQ05326NM · Replaces 3028815 · 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
- [ST3276-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID101621452020260311145336.0001): Gasket, Four-Hole. Core Parts LLC · PMA PQ05326NM · Replaces ST3276-01 · Feb 26, 2026
- [3012456ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183964715720260330191202.0001): Seal, Ring, Non-Metallic. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3012456 · Feb 11, 2026
- [3012456ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183964715720260330191202.0001): Seal, Ring, Non-Metallic. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3012456 · Feb 11, 2026
- [3007355CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID150958507420260217165221.0001): Spacer, Adjusting. Core Parts LLC · PMA PQ05326NM · Replaces 3007355 · Feb 11, 2026
- [3007355CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID150958507420260217165221.0001): Spacer, Adjusting. Core Parts LLC · PMA PQ05326NM · Replaces 3007355 · Feb 11, 2026
- [3012457ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117485990820260330191202.0001): Seal, Ring, Non-Metallic. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3012457 · Feb 11, 2026
- [3012457ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117485990820260330191202.0001): Seal, Ring, Non-Metallic. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3012457 · Feb 11, 2026
- [3010671RM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180066927420260204181356.0001): Washer, Flat. Rimark Manufacturing · PMA PQ10018NE · Replaces 3010671 · Jan 28, 2026
- [3010671RM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180066927420260204181356.0001): Washer, Flat. Rimark Manufacturing · PMA PQ10018NE · Replaces 3010671 · Jan 28, 2026
- [3010880CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID111084696520260108163216.0001): Gasket, Igniter. CORE PARTS LLC · PMA PQ05326NM · Replaces 3010880 · Oct 16, 2025
- [3010880CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID111084696520260108163216.0001): Gasket, Igniter. CORE PARTS LLC · PMA PQ05326NM · Replaces 3010880 · Oct 16, 2025
- [3026652ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100977584220260121175611.0001): Seal, Plain. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3026652 · Sep 10, 2025
- [3026652ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100977584220260121175611.0001): Seal, Plain. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 3026652 · Sep 10, 2025
- [210036ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID121764629320250926170341.0001): Bearing, Needle. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 210036 · Sep 9, 2025
- [210036ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID121764629320250926170341.0001): Bearing, Needle. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 210036 · Sep 9, 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
- [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
- [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
- [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
- [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
- [WF344763](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID115254655320250602133049.0001): Nozzle Cover, Machined. Donaldson Company Inc · PMA PQ2432CE · Replaces 3120869-01, Alternate: 3019491… · May 23, 2025
- [WF344763](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID115254655320250602133049.0001): Nozzle Cover, Machined. Donaldson Company Inc · PMA PQ2432CE · Replaces 3120869-01, Alternate: 3019491… · May 23, 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
- [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
- [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
- [3049871-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID134847727520260108162918.0001): Washer, Key. CORE PARTS LLC · PMA PQ05326NM · Replaces 3049871-01 · Jan 17, 2025
- [3049871-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID134847727520260108162918.0001): Washer, Key. CORE PARTS LLC · PMA PQ05326NM · Replaces 3049871-01 · Jan 17, 2025

All of them: https://openairdocs.org/engine/pratt-whitney-pt6a-27-series/pma.md

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