# Pratt & Whitney Canada PT6A-27 series

- Type: Engine model (FAA registry)
- Registry code: 52247
- Manufacturer (registry): P&W CANADA
- Model: PT6A-27
- Engine type: Turbo-prop
- Power: 680 hp
- Installed in: 30 registered aircraft
- Page: https://openairdocs.org/engine/pratt-whitney-canada-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 (30)

- [N1544R](https://openairdocs.org/aircraft/N1544R): [Ras Aviation LLC](https://openairdocs.org/faa-owner/RAS%20AVIATION%20LLC), [Elyria, OH](https://openairdocs.org/faa-place/OH/Elyria), built 1992, S/N 401-0864
- [N162DE](https://openairdocs.org/aircraft/N162DE): [Tvpx Aircraft Solutions Inc Trustee](https://openairdocs.org/faa-owner/TVPX%20AIRCRAFT%20SOLUTIONS%20INC%20TRUSTEE), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 1979, S/N 429
- [N189GC](https://openairdocs.org/aircraft/N189GC): [Cortez Fisher LLC](https://openairdocs.org/faa-owner/CORTEZ%20FISHER%20LLC), [Kirkland, WA](https://openairdocs.org/faa-place/WA/Kirkland), built 1981, S/N 772
- [N190GC](https://openairdocs.org/aircraft/N190GC): [Monarch Enterprises Inc](https://openairdocs.org/faa-owner/MONARCH%20ENTERPRISES%20INC), [Kirkland, WA](https://openairdocs.org/faa-place/WA/Kirkland), built 1970, S/N 285
- [N338SB](https://openairdocs.org/aircraft/N338SB): [Switchback Aviation LLC](https://openairdocs.org/faa-owner/SWITCHBACK%20AVIATION%20LLC), [Cody, WY](https://openairdocs.org/faa-place/WY/Cody), built 2007, S/N 953
- [N359AR](https://openairdocs.org/aircraft/N359AR): [Twin Otter International Ltd](https://openairdocs.org/faa-owner/TWIN%20OTTER%20INTERNATIONAL%20LTD), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1973, S/N 359
- [N3655B](https://openairdocs.org/aircraft/N3655B): [Woodley Aerial Leasing LLC](https://openairdocs.org/faa-owner/WOODLEY%20AERIAL%20LEASING%20LLC), [Walnut, IL](https://openairdocs.org/faa-place/IL/Walnut), built 1980, S/N 301-0291
- [N365AR](https://openairdocs.org/aircraft/N365AR): [Twin Otter International Ltd](https://openairdocs.org/faa-owner/TWIN%20OTTER%20INTERNATIONAL%20LTD), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1973, S/N 365
- [N434AR](https://openairdocs.org/aircraft/N434AR): [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 1974, S/N 432
- [N450PP](https://openairdocs.org/aircraft/N450PP): [J R S Sky Inc](https://openairdocs.org/faa-owner/J%20R%20S%20SKY%20INC), [Pound Ridge, NY](https://openairdocs.org/faa-place/NY/Pound%20Ridge), built 1975, S/N 450
- [N456SF](https://openairdocs.org/aircraft/N456SF): [Fejes Samuel T Jr](https://openairdocs.org/faa-owner/FEJES%20SAMUEL%20T%20JR), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), S/N 1683 TB51
- [N488WY](https://openairdocs.org/aircraft/N488WY): [Flexible Flyer LLC](https://openairdocs.org/faa-owner/FLEXIBLE%20FLYER%20LLC), [Cody, WY](https://openairdocs.org/faa-place/WY/Cody), built 2017, S/N 1012
- [N504WJ](https://openairdocs.org/aircraft/N504WJ): [Vantage Air Corp](https://openairdocs.org/faa-owner/VANTAGE%20AIR%20CORP), [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell), built 1976, S/N 503
- [N512AR](https://openairdocs.org/aircraft/N512AR): [Twin Otter International Ltd](https://openairdocs.org/faa-owner/TWIN%20OTTER%20INTERNATIONAL%20LTD), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1967, S/N 59
- [N515AR](https://openairdocs.org/aircraft/N515AR): [Twin Otter International Ltd](https://openairdocs.org/faa-owner/TWIN%20OTTER%20INTERNATIONAL%20LTD), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1976, S/N 515
- [N537AR](https://openairdocs.org/aircraft/N537AR): [Avro Ltd](https://openairdocs.org/faa-owner/AVRO%20LTD), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1977, S/N 537
- [N56RF](https://openairdocs.org/aircraft/N56RF): [United States Department Of Commerce](https://openairdocs.org/faa-owner/UNITED%20STATES%20DEPARTMENT%20OF%20COMMERCE), [Lakeland, FL](https://openairdocs.org/faa-place/FL/Lakeland), built 1982, S/N 788
- [N593UR](https://openairdocs.org/aircraft/N593UR): [Ultimate Resort Vacations Inc](https://openairdocs.org/faa-owner/ULTIMATE%20RESORT%20VACATIONS%20INC), [Weston, FL](https://openairdocs.org/faa-place/FL/Weston), built 1978, S/N 593
- [N615AR](https://openairdocs.org/aircraft/N615AR): [Twin Otter International Ltd](https://openairdocs.org/faa-owner/TWIN%20OTTER%20INTERNATIONAL%20LTD), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1979, S/N 615
- [N696EX](https://openairdocs.org/aircraft/N696EX): [Sky West Aviation Inc Trustee](https://openairdocs.org/faa-owner/SKY%20WEST%20AVIATION%20INC%20TRUSTEE), [Albuquerque, NM](https://openairdocs.org/faa-place/NM/Albuquerque), built 2019, S/N NFEX001
- [N718KW](https://openairdocs.org/aircraft/N718KW): [Warren Transportation LLC](https://openairdocs.org/faa-owner/WARREN%20TRANSPORTATION%20LLC), [Dallas, TX](https://openairdocs.org/faa-place/TX/Dallas), built 1968, S/N 120
- [N723AR](https://openairdocs.org/aircraft/N723AR): [Twin Otter International Ltd](https://openairdocs.org/faa-owner/TWIN%20OTTER%20INTERNATIONAL%20LTD), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1980, S/N 723
- [N7MC](https://openairdocs.org/aircraft/N7MC): [St Tammany Parish Mosquito Abatement District](https://openairdocs.org/faa-owner/ST%20TAMMANY%20PARISH%20MOSQUITO%20ABATEMENT%20DISTRICT), [Slidell, LA](https://openairdocs.org/faa-place/LA/Slidell), built 1967, S/N 40
- [N821AR](https://openairdocs.org/aircraft/N821AR): [Fairey Ltd](https://openairdocs.org/faa-owner/FAIREY%20LTD), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1974, S/N 421
- [N856FA](https://openairdocs.org/aircraft/N856FA): [Plane Fun Inc Tr Trustee](https://openairdocs.org/faa-owner/PLANE%20FUN%20INC%20TR%20TRUSTEE), [Snellville, GA](https://openairdocs.org/faa-place/GA/Snellville), built 1986, S/N 856
- [N88HE](https://openairdocs.org/aircraft/N88HE): [Stol LLC](https://openairdocs.org/faa-owner/STOL%20LLC), [Santa Fe, NM](https://openairdocs.org/faa-place/NM/Santa%20Fe), built 2026, S/N 488
- [N92FE](https://openairdocs.org/aircraft/N92FE): [Warren Transportation LLC](https://openairdocs.org/faa-owner/WARREN%20TRANSPORTATION%20LLC), [Dallas, TX](https://openairdocs.org/faa-place/TX/Dallas), built 1969, S/N 242
- [N94AR](https://openairdocs.org/aircraft/N94AR): [Twin Otter International Ltd](https://openairdocs.org/faa-owner/TWIN%20OTTER%20INTERNATIONAL%20LTD), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1973, S/N 388
- [N979FA](https://openairdocs.org/aircraft/N979FA): [Reid Colby J](https://openairdocs.org/faa-owner/REID%20COLBY%20J), [Broomfield, CO](https://openairdocs.org/faa-place/CO/Broomfield), built 2011, S/N 979
- [N999CZ](https://openairdocs.org/aircraft/N999CZ): [N999cz LLC](https://openairdocs.org/faa-owner/N999CZ%20LLC), [Milwaukee, WI](https://openairdocs.org/faa-place/WI/Milwaukee), built 1969, S/N U116

## NTSB investigations (7)

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 WPR25LA248](https://openairdocs.org/ntsb/WPR25LA248), Aug 9, 2025: De Havilland DHC-6-300 (N189GC), Whitmore, AZ, substantial damage, investigation ongoing
- [NTSB CEN19LA267](https://openairdocs.org/ntsb/CEN19LA267), Aug 15, 2019: De Havilland DHC6 (N322AV), San Marcos, TX, substantial damage. Probable cause: The pilot's delayed go-around attempt and the flight instructor's delayed remedial action that resulted in a nose-down impact with terrain during an attempted go-around.
- [NTSB GAA19CA251](https://openairdocs.org/ntsb/GAA19CA251), May 4, 2019: De Havilland DHC2 (N456SF), McCarthy, AK, substantial damage. Probable cause: The pilot's failure to maintain a proper approach path in gusting wind conditions, which resulted in the airplane landing short of the airstrip and bouncing.
- [NTSB WPR14LA313](https://openairdocs.org/ntsb/WPR14LA313), Jul 25, 2014: Dehavilland DHC 6 300 (N190GC), Boulder City, NV, minor damage. Probable cause: The airplane flight crew’s failure to exercise the necessary vigilance and precautions and yield the right of way to the landing helicopter, which resulted in the airplane colliding with the…
- [NTSB ERA11LA239](https://openairdocs.org/ntsb/ERA11LA239), Apr 10, 2011: Beech BE99 (N899AE), Cedartown, GA, substantial damage. Probable cause: The failure of the left main landing gear bearings and supports due to inadequate lubrication by unknown maintenance personnel.
- [NTSB ANC72DAA27](https://openairdocs.org/ntsb/ANC72DAA27), Mar 31, 1972: Dehavilland DHC-6 (N512AR), Prudhoe Bay, AK, substantial damage
- [NTSB ANC71DAA23](https://openairdocs.org/ntsb/ANC71DAA23), Dec 1, 1970: Dehavilland DHC-6 (N512AR), Prudhoe Bay, AK, substantial damage

## FAA accident and incident reports (13)

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.

- [Incident 20260430009649I](https://openairdocs.org/incident/20260430009649I), Apr 30, 2026: Dehavilland DHC-6-300 (N190GC), Tusayan, AZ, No damage. On April 30, 2026, at 2142Z (14:42 MST local), a de-havilland DHC-6-300, was involved in a runway excursion event at Grand Canyon National park airport (kgcn),…
- [Accident 20250809011609A](https://openairdocs.org/incident/20250809011609A), Aug 9, 2025: Dehavilland DHC-6-300 (N189GC), Whitmore, AZ, Substantial damage. On August 9, 2025, about 1240 pacific daylight time, a de havilland DHC-6-300, was substantially damaged when it was involved in an accident near Whitmore,…
- [Incident 20250706007929I](https://openairdocs.org/incident/20250706007929I), Jul 6, 2025: Pilatus PC-6/B2-H4 (N338SB), Rangeley, ME, Minor damage. On 7/6/2025 at approximately 1640 local time, a Pilatus PC6 attempted to maneuver away from the KM57 seaplane dock when it struck a moored unoccupied…
- [Accident 20190815017749A](https://openairdocs.org/incident/20190815017749A), Aug 15, 2019: Dehavilland DHC-6-300 (N322AV), San Marcos, TX, Substantial damage. During an aborted landing the flying pilot mismanaged the controls and lowered the angle of attack to where the aircraft stuck the ground at a steep angle
- [Accident 20190503015179A](https://openairdocs.org/incident/20190503015179A), May 3, 2019: Dehavilland DHC 2 MK III (N456SF), Mccarthy, AK, Substantial damage. Certificate holder was making a landing at ultima thule lodge near Mccarthy, AK. On approach the winds were gusting 20 to 25 knots quartering headwind. The…
- [Incident 20190205009919I](https://openairdocs.org/incident/20190205009919I), Feb 5, 2019: Beech 99A (N999CZ), Baraboo, WI, Minor damage. Aircraft nose wheel had fallen off of the aircraft during takeoff from milwaukee, WI. Pilot was unaware. During landing at Wisconsin Dells airport (dll), the…
- [Incident 20170524006629I](https://openairdocs.org/incident/20170524006629I), May 24, 2017: Dehavilland DHC-6-300 (N189GC), Grand Canyon, AZ, Minor damage. After interviews and visual inspection of the tire markings made by the aircraft during the excursion, it is evident that the aircraft departed the runway due…
- [Accident 20140725016512A](https://openairdocs.org/incident/20140725016512A), Jul 25, 2014: Dehavilland DHC-6-300 (N190GC), Boulder City, NV, Substantial damage. On 07/25/14 at approximately 1643 PDT, an American Eurocopter AS-350 B4 EC-130 helicopter was struck from behind by a Dehavilland DHC-6 twin otter airplane at…
- [Accident 20110410007159A](https://openairdocs.org/incident/20110410007159A), Apr 10, 2011: Beech 99 (N899AE), Cedartown, GA, Substantial damage. The PIC advised that he had the "green" down and lock lights illuminated for both the nose gear and the right wing landing gear, but could not get the light…
- [Incident 20100104025749I](https://openairdocs.org/incident/20100104025749I), Jan 4, 2010: Dhc-6 300 (N189GC), San Juan, PR, No damage. On January 04, 2010, captain clifford and first officer hackler were assigned flight #1337, in aircraft N189GC, from stx, st. croix to sig, isla grande…
- [Incident 19790903034069I](https://openairdocs.org/incident/19790903034069I), Sep 3, 1979: Dhav DHC6TWNOTTER (N239Z), Boston, MA. Flight returned after fire warning. Replaced detectors.
- [Incident 19790206004949I](https://openairdocs.org/incident/19790206004949I), Feb 6, 1979: Dhav DHC6TWNOTTER (N239Z), Boston, MA. Aborted takeoff due to low torque. Replaced prop governor.
- [Incident 19790124004159I](https://openairdocs.org/incident/19790124004159I), Jan 24, 1979: Dhav DHC6TWNOTTER (N239Z), Boston, MA. Pilot requested priority landing due to no fuel transfer. Fuel quantity indicator was stuck.

## 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-canada-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-canada-pt6a-27-series/pma.md

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