# U/A Canada PT6A-20

- Type: Engine model (FAA registry)
- Registry code: 61568
- Manufacturer (registry): U/A CANADA
- Model: PT6A-20
- Engine type: Turbo-prop
- Power: 550 hp
- Data sheet: [TCDS E4EA](https://openairdocs.org/tcds/E4EA) (OpenAirDocs)
- Holder: Pratt & Whitney Canada Corp.
- Installed in: 2 registered aircraft
- Page: https://openairdocs.org/engine/u-a-canada-pt6a-20

Model codes come from the FAA registry's reference file.

## ADs that may apply (OpenAirDocs)

Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 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 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 80-08-12](https://openairdocs.org/ad/80-08-12): Fuel Pump Drive Coupling Splines · Pratt & Whitney Canada PT6A-11, PT6A-112, PT6A-135 and 24 more. Effective Apr 18, 1980
- [AD 80-04-02](https://openairdocs.org/ad/80-04-02): Push-Pull Control Terminal · Pratt & Whitney Canada PT6A-20, PT6A-6A, PT6A-6B and 1 more. Effective Feb 8, 1980
- [AD 75-06-01](https://openairdocs.org/ad/75-06-01): Gearbox Deterioration · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-20B and 11 more. Effective Apr 1, 1977
- [AD 75-11-04](https://openairdocs.org/ad/75-11-04): Reduction Gearbox Engine Distress · Pratt & Whitney Canada PT6A-20, PT6A-20A, PT6A-20B and 8 more. Effective May 20, 1975
- [AD 70-16-01](https://openairdocs.org/ad/70-16-01): Turbo Propeller Governors · Pratt & Whitney Canada PT6A-11, PT6A-11AG, PT6A-15AG and 5 more. Effective Aug 4, 1970
- [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
- [AD 68-05-03](https://openairdocs.org/ad/68-05-03): Reverse Mode · Pratt & Whitney Canada PT6A-20 and PT6A-6B. Effective Feb 28, 1968

## 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 (2)

- [N62LH](https://openairdocs.org/aircraft/N62LH): [Kavalair LLC Series F](https://openairdocs.org/faa-owner/KAVALAIR%20LLC%20SERIES%20F), [Marion, MT](https://openairdocs.org/faa-place/MT/Marion), built 1968, S/N 97
- [N908K](https://openairdocs.org/aircraft/N908K): [Petors John W](https://openairdocs.org/faa-owner/PETORS%20JOHN%20W), [Addison, TX](https://openairdocs.org/faa-place/TX/Addison), built 1970, S/N LJ-504

## NTSB investigations (2)

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 ATL84LA120](https://openairdocs.org/ntsb/ATL84LA120), Mar 14, 1984: Beech 99 (N7994R), Myrtle Beach, SC, substantial damage
- [NTSB MKC74IK067](https://openairdocs.org/ntsb/MKC74IK067), May 18, 1974: Beech 99 (N7994R), Fort Dodge, IA, incident, minor damage

## FAA accident and incident reports (8)

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 20150111018759I](https://openairdocs.org/incident/20150111018759I), Jan 11, 2015: Beech 99 (N7994R), Saint Kitts And, Minor damage. On January 23, 2015 at approx.1340 inspector hernandez; visited aviation partners of boynton beach to investigated an alleged incident that occurred on…
- [Incident 20021002034819I](https://openairdocs.org/incident/20021002034819I), Oct 2, 2002: Beech 99 (N7994R), Grand Island, NE, Minor damage. (-23) On October 2, 2002 at approximately 19:30 CDT a Beechcraft 99, N7994R operated by suburban air freight inc. under certificate number JDWA157F departed…
- [Incident 19980826032319I](https://openairdocs.org/incident/19980826032319I), Aug 26, 1998: Beech 99 (N7994R), Omaha, NE. On 8/26/98, approximately 0630 CDT, Beechcraft 99, N7994R departed Eppley Airfield, Omaha, NE, while engaged in FAR part 135 cargo operations for suburban air…
- [Incident 19951103039919I](https://openairdocs.org/incident/19951103039919I), Nov 3, 1995: Beech 99 (N7994R), Omaha, NE, Minor damage. Bird strike left wing on approach to oma. Damaged wing leading edge.
- [Incident 19851002068849I](https://openairdocs.org/incident/19851002068849I), Oct 2, 1985: Beech 99 (N7994R), Kearney, NE, Minor damage. Encountered a small flock of birds at 7500 feet. Multiple impacts and ingestion of bird parts in left engine.
- [Incident 19850801050359I](https://openairdocs.org/incident/19850801050359I), Aug 1, 1985: Beech 99 (N7994R), Omaha, NE. Shortly after takeoff baggage door unlock light came on. Returned for landing. Cause undetermined.
- [Accident 19840314005689A](https://openairdocs.org/incident/19840314005689A), Mar 14, 1984: Beech 99 (N7994R), North Myrtle Be, SC, Substantial damage. Pilot forgot to extend landing gear. Landed gear up.
- [Incident 19810312015999I](https://openairdocs.org/incident/19810312015999I), Mar 12, 1981: Beech 99 (N7994R), Denver, CO. During taxi after landing, the pilot had trouble following the taxi lights and ran off the runway.

## Service difficulty reports (197, newest 50)

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

- [SDR EBTR20170523015](https://openairdocs.org/sdr/EBTR20170523015), May 20, 2017: ENGINE. SHUTDOWN. ON DESCENT FROM UGN TO ARB HEARD POP, AIRCRAFT YAWED, NOTICED RIGHT ENGINE FUEL FLOW AND ITT DIMINISHING TO 0. VISUAL OF ENGINE COWL NO DEFECTS NOTED. FOLLOWED 
- [SDR CTY2016F00001](https://openairdocs.org/sdr/CTY2016F00001), Aug 22, 2016: ENGINE. OVERHEATED. ENGINE OVERHEATED AT 6000 FT ON CLIMBOUT. FEATHERED PROP AND RETURNED TO DEPARTURE. WILL BE DOING A TEARDOWN REPORT. WE ARE SENDING THE FUEL CONTROL UNIT OUT FO
- [SDR AXSA2016080800001](https://openairdocs.org/sdr/AXSA2016080800001), Aug 5, 2016: GOVERNOR. BYPASSING. ON FLIGHT, CALLED FLIGHT CONTROL VIA UNICOM AT 1140Z TO TELL US HE WAS TAXING BACK TO RAMP. WHILE INCREASING POWER FOR TAKEOFF, PROP WENT INTO FEATHER.
- [SDR 2016FA0000233](https://openairdocs.org/sdr/2016FA0000233), Mar 25, 2016: BEARING. WORN. LEFT ENGINE, SN PCE-20881, RIGHT ENGINE SN PCE-20879. RIGHT ENGINE FUEL CONTROL INOPERATIVE. FUEL CONTROL TO FUEL PUMP SHEARED DRIVE COUPLING. FUEL CONTROL UNIT
- [SDR 3PSR20150918004](https://openairdocs.org/sdr/3PSR20150918004), Sep 18, 2015: SPRING. CRACKED. DURING THE NDT INSPECTION, REQUIRED DURING THE O/H OF THE PROPELLER, A CRACK WAS FOUND ON THE FEATHERING SPRING,
- [SDR CA141022009](https://openairdocs.org/sdr/CA141022009), Oct 18, 2014: PRESSURE SWITCH. FAILED. (CAN) AFTER TAKE OFF, THROUGH 400 FT. THE LEFT ENGINE FEATHERED. PILOTS ORIGINALLY THOUGHT THERE WAS AN ENGINE FAILURE AS TORQUE WAS INDICATING ZERO. PIC MADE T
- [SDR CA140602002](https://openairdocs.org/sdr/CA140602002), Apr 9, 2014: TUBE. CRACKED. (CAN) 1 ENGINE ON THIS ACFT HAS REPORTEDLY EXPERIENCED REPETITIVE FUEL TUBES CRACKING, 3 TIMES IN THE RECENT PAST. THE FUEL TUBES WILL BE SENT TO MFG FOR FURTHE
- [SDR CA140314004](https://openairdocs.org/sdr/CA140314004), Feb 27, 2014: ENGINE. MALFUNCTIONED. THE ACFT HAD A RUNWAY EXCURSION FOLLOWING WHAT THE PILOT DESCRIBED AS AN ENGINE RUNAWAY DURING LANDING AS HE WAS GOING IN REVERSE.
- [SDR CA130605003](https://openairdocs.org/sdr/CA130605003), May 31, 2013: STARTER GEN. FAILED. (CAN) BEECH 90 DEPARTED AIRPORT AND HAD DUAL GENERATOR FAIL LIGHTS. THE AIRCRAFT RETURNED TO BASE). DISCOVERED THE RIGHT STARTER/GENERATOR HAD FAILED, IT WAS AL
- [SDR CA120903006](https://openairdocs.org/sdr/CA120903006), Aug 27, 2012: ENGINE. FAILED. (CAN) DURING AERIAL APPLICATION OPERATIONS, THE PILOT HEARD A LOUD NOISE AND SUBSEQUENTLY LOST ENGINE POWER. THE PILOT GOT RID OF THE HOPPER CONTENTS BEFORE MAK
- [SDR CA120518003](https://openairdocs.org/sdr/CA120518003), May 3, 2012: ENGINE. POWER LOSS. (CAN) DURING DESCENT, PASSING THROUGH 1300 FT, THE ENGINE TEMPERATURE INCREASED RAPIDLY POWER WAS LOST. THE PILOT SHUT THE ENGINE DOWN AND AN UNEVENTFUL SINGLE 
- [SDR CA120507009](https://openairdocs.org/sdr/CA120507009), May 2, 2012: BLEED VALVE. MALFUNCTIONED. (CAN) CLIMBING THROUGH FL90, THE PILOT NOTICED THAT THE RT ENGINE COMPRESSOR SPEED NG, WAS INDICATING 101.5 PERCENT. REDUCED THE POWER AND NG RETURNED TO 98 PER
- [SDR CA110721009](https://openairdocs.org/sdr/CA110721009), Jul 19, 2011: STRUCTURE. CRACKED. FOUND CRACK AT OTBD SPAR ATTACH AREA, VISUAL INSP IN THE INSP HOLE.
- [SDR CA110218002](https://openairdocs.org/sdr/CA110218002), Feb 14, 2011: SUPPORT. CRACKED. WHILE CONDUCTING FLOURECENT PENETRANT INSP ON ELEVATOR CONTROL TUBE CTR SUPPORT IAW SB 2145, A CRACK INDICATION WAS NOTED RUNNING FROM THE INBD TAPPER PIN HOLE.
- [SDR CA110120003](https://openairdocs.org/sdr/CA110120003), Jan 19, 2011: O-RING. LEAKING. (CAN) THE AIRCRAFT HAD A FUEL LEAK THAT ONLY STARTED AFTER A HIGH POWER APPLICATION. UPON INSPECTION, IT WAS NOTED THE O-RING HAD PARTIALLY DISPLACED FROM AROUN
- [SDR CA110125009](https://openairdocs.org/sdr/CA110125009), Jan 13, 2011: ENGINE. FAILED. (CAN) ABORTED TAKE-OFF DURING TAKE OFF, THE PILOTS HEARD A NOISE FROM THE LEFT ENGINE AND THE TORQUE INDICATION ENGINE WENT TO ZERO. TAKE OFF ABORTED UNEVENTFUL
- [SDR CA090821002](https://openairdocs.org/sdr/CA090821002), Aug 19, 2009: OIL SYSTEM. LEAKING. ACFT WAS ON RUNWAY, ENGINES POWERED UP AND BLUE SMOKE WAS OBSERVED AND SMELLED COMING INTO CABIN. TAKEOFF WAS ABORTED AND ACFT RETURNED TO GATE. MX CHECKS FOUND
- [SDR CA090605006](https://openairdocs.org/sdr/CA090605006), Jun 1, 2009: CLAMP. UNSERVICEABLE. (CAN) DURING VISUAL INSP, IT WAS NOTED THAT THE LOCK HOLES FOR THE A304 LINK PINS WERE DRILLED THROUGH THE PIN AND INTO THE OPPOSITE WALL. IT APPEARS THAT THIS 
- [SDR CA090529004](https://openairdocs.org/sdr/CA090529004), May 26, 2009: ACTUATOR CABLE. LOOSE. (CAN) DURING FLIGHT, THE PILOT NOTICED THAT THE ELEVATOR TRIM WAS NOT FUNCTIONING AND REMAINED IN THE NEUTRAL POSITION. AFTER LANDING, WHEN IT WAS INSPECTED, WH
- [SDR CA090408011](https://openairdocs.org/sdr/CA090408011), Apr 2, 2009: ENGINE. MAKING METAL. (CAN) THE PILOT REPORTED THAT APPROX 30 MINUTES INTO THE FLIGHT AT FL170, HEARD A LOUD NOISE. THE CO-PILOT NOTED FLAMES AND DEBRIS COMING FROM THE ENGINE EXHAUS
- [SDR CA090224004](https://openairdocs.org/sdr/CA090224004), Feb 23, 2009: ACTUATOR. FAILED. (CAN) DURING A POST MAINTENANCE TEST FLIGHT THE LANDING GEAR WAS SELECTED DOWN, THE NOSE AND LEFT DOWN LIGHTS ILLUMINATED AND THE RIGHT STAYED OUT. TWO MORE GEA
- [SDR CA090113006](https://openairdocs.org/sdr/CA090113006), Jan 9, 2009: ARM. BROKEN. (CAN) PILOT NOTICED THAT THE PEDAL WAS LOOSE IN FLIGHT, SO HE LOOKED DOWN AND COULD SEE IT NOT ATTACHED TO THE TOP OF RT PEDAL. (TC NR 20090113006)
- [SDR CA080815005](https://openairdocs.org/sdr/CA080815005), Aug 3, 2008: SPLINE. WORN. (CAN) DURING SKYDIVING OPS, SHORTLY AFTER TAKE-OFF ACFT CRASHED UNDER UNKNOWN CIRCUMSTANCES. IT WAS REPORTED THAT PILOT WAS ATTEMPTING TO RETURN TO THE POINT OF
- [SDR CA090130007](https://openairdocs.org/sdr/CA090130007), Jul 29, 2008: GEAR. FAILED. THEENGINE SUFFERED A COMPLETE LOSS OF POWER DUE TO A FAILURE OF A FIRST STAGE REDUCTION GEARBOX PLANETARY GEAR. FAILURE OF THE PLANETARY GEAR WAS THE RESULT OF 
- [SDR CA080407005](https://openairdocs.org/sdr/CA080407005), Apr 3, 2008: ENGINE. STOPPED. AFTER A NORMAL TAKEOFF, THE CREW WENT THROUGH POWER 1, FLAPS UP AND POWER 2 AND AFTER SETTING POWER 2 PRIOR TO CLIMB CHECKS, THE CREW HEARD A LOUD POP AND SCRAP
- [SDR CA080407010](https://openairdocs.org/sdr/CA080407010), Apr 2, 2008: CABLE. BROKEN. STEERING CABLE BROKE ON TAXI WHILE THE AIRCRAFT WAS PREPARING FOR TAKEOFF.
- [SDR CA080401004](https://openairdocs.org/sdr/CA080401004), Mar 26, 2008: ENGINE. POWER LOSS. ON TAKEOFF, THE LEFT ENGINE LAGGED BEHIND NOT PRODUCING MAX. POWER, TROUBLE SHOOTING FOUND THE TEMPERATURE COMPENSATOR UNIT LEAKING P3 AIR. THE PART WAS REPLACE
- [SDR JDWA2008SAF01](https://openairdocs.org/sdr/JDWA2008SAF01), Feb 18, 2008: RESISTOR. BLOWN. ON MONDAY THE 18TH OF FEBRUARY 2008, BEECH 99, N118SF, S/N U-32, SUBURBAN AIR FREIGHT POSITIONING FLIGHT, ROUTE NUMBER SUBAIR 13 OPERATING UNDER PART 91, DEPART
- [SDR CA080201001](https://openairdocs.org/sdr/CA080201001), Jan 30, 2008: CHAIN. BENT. (CAN) DURING CLIMB, A LOUD NOISE WAS HEARD AND THE GEAR FAILED TO RETRACT (3) GREEN INDICATION DURING INSP THE AFT NOSE GEAR CHAIN WAS BROKEN AND THE REMOTE CIR
- [SDR CA080130001](https://openairdocs.org/sdr/CA080130001), Jan 28, 2008: BOLT. BROKEN. (CAN) DURING INSPECTION, THE TIE ROD TO FUSELAGE LUG WAS FOUND TO HAVE ONE OF THE (2) ATTACH BOLTS BROKEN. THE BREAK OCCURRED IN THE THREADED AREA OF THE BOLT. 
- [SDR CA080117007](https://openairdocs.org/sdr/CA080117007), Jan 15, 2008: ENGINE. FAILED. (CAN) WHILE DOING PILOT TRAINING, THE LT OIL PRESSURE WARNING LIGHT CAME ON. PILOTS LOOKED DOWN AT OIL PRESSURE GAUGE, THE PRESSURE WAS DROPPING SO THEY SHUTDOW
- [SDR CA071107001](https://openairdocs.org/sdr/CA071107001), Nov 3, 2007: ENGINE. FAILED. (CAN) PILOTS HAD TO SHUTDOWN RT ENGINE. MAINTENANCE INSPECTION FOUND PROP WOULDN`T TURN, EXPECT POWER SECTION FAILURE. (TC NR 20071107001)
- [SDR CA071128006](https://openairdocs.org/sdr/CA071128006), Nov 3, 2007: ENGINE. SURGES. (CAN) DURING CRUISE, THE CREW OBSERVED ENGINE (SURGES) AND PERFORMED AN INFLIGHT SHUTDOWN. POST FLIGHT INSPECTION REVEALED A SEIZED PROPELLER SHAFT AND POWER TU
- [SDR CA071212024](https://openairdocs.org/sdr/CA071212024), Oct 26, 2007: EXHAUST DUCT. CRACKED. (CAN) WHILE INSPECTING THE POWER SECTION FOR REASSEMBLY AFTER HSI, CIRCUMFERENTIAL CRACKS WERE DISCOVERED ALONG THE WELDS OF THE EXHAUST DUCT JUST FWD OF THE PT
- [SDR CA070911008](https://openairdocs.org/sdr/CA070911008), Sep 7, 2007: ACTUATOR. STRIPPED. (CAN) AFTER TAKEOFF GEAR SELECTED UP RT GEAR DID NOT COME UP. GEAR SELECTED DOWN, (3) GREEN INDICATIONS OBSERVED AC LANDED. AC BROUGHT INTO HANGER AND PUT ON JA
- [SDR MDGA2007977AA](https://openairdocs.org/sdr/MDGA2007977AA), Aug 4, 2007: ENGINE. SHUTDOWN. LEFT ENGINE INFLIGHT SHUT DOWN, PILOTS REPORT LOSS OF TORQUE AND RISE IN ITT, ENGINE SHUT DOWN AND A SAFE LANDING COMPLETED.
- [SDR CA070515002](https://openairdocs.org/sdr/CA070515002), May 14, 2007: COLLAR. CRACKED. (CAN) DURING MAINTENACE TO REPAIR THE NOSE GEAR ASSEMBLY IT WAS NOTED THAT THE STEERING COLLAR WAS CRACKED. THE NOSE GEAR WAS THEN FULLY DISASSEMBLED TO REMOVE 
- [SDR CA061128005](https://openairdocs.org/sdr/CA061128005), Nov 15, 2006: COMPRESSOR. DAMAGED. (CAN) ON POWER APPLICATION FOR TAKEOFF, THE #2 ENGINE ACCELERATED NORMALLY TO TAKEOFF POWER. AS THE AIRCRAFT BEGAN TO CLIMB ONTO THE STEP, THE F/O OBSERVED A FL
- [SDR EVGR1113735](https://openairdocs.org/sdr/EVGR1113735), Nov 9, 2006: DOOR FRAME. CORRODED. CORROSION WAS FOUND AT THE AFT DOOR FRAME AT FUSELAGE STATION 255.5 JUST BELOW AND OUT BOARD OF THE DOOR SNUBBER MOUNT. DAMAGE WAS REPAIRED IAW SIRM PN 9839006C
- [SDR CA060828002](https://openairdocs.org/sdr/CA060828002), Aug 28, 2006: SELECTOR VALVE. FAILED. (CAN) DURING THE SCHEDULED TASK TO LEAK CHECK THE LANDING GEAR SYSTEM (LANDING GEAR MM M-8101, ROUTINE MAINTENANCE) IT WAS NOT POSSIBLE TO BUILD PRESSURE IN THE
- [SDR CA060828003](https://openairdocs.org/sdr/CA060828003), Aug 28, 2006: SELECTOR VALVE. MALFUNCTIONED. (CAN) ON SCHEDULED MAINTENANCE 1000 HRS HYD. SYSTEM 3000 PSI LEAK TEST (LANDING GEAR MM M-8101, ROUTINE MAINTENANCE) HYD. SELECTOR FOUND LEAKING TO RETURN ON GE
- [SDR 2006FA0000794](https://openairdocs.org/sdr/2006FA0000794), Jul 8, 2006: LEG ASSY. FAILED. THE RT MAIN GEAR LEG (SPRING GEAR STYLE) FAILED AT THE UPPER END, JUST OB OF THE CLAMP BAV. THIS IS AN AREA OF MAJOR FLEX OF THE GEAR LEG AND IT IS THE THICKEST
- [SDR CA060317001](https://openairdocs.org/sdr/CA060317001), Mar 14, 2006: ACTUATOR. FAILED. (CAN) ON DEPARTURE, A LOUD BANG WAS HEARD AFTER GEAR WAS SELECTED UP, LANDING GEAR (IN TRANSIT) LIGHT REMAINED ON. GEAR WAS CYCLED, NO FURTHER NOISES WERE HEARD
- [SDR CA060315004](https://openairdocs.org/sdr/CA060315004), Mar 9, 2006: RELAY. FAILED. A/C SHUT DOWN AFTER FLT, CREW REPORTED NR 2 GENERATOR WARNING LIGHT DID NOT ILLUMINATE. A/C WAS RUN FOR TROUBLESHOOTING, DURING WHICH TIME GEN FUNCTIONED INTERM
- [SDR CA060208011](https://openairdocs.org/sdr/CA060208011), Feb 2, 2006: FCU. FLUCTUATES. (CAN) WHEN AC WAS ABOUT 10 MIN FROM LANDING, ON DESCENT, ENG POWER LEVERS WERE RETARDED FROM 38 LBS OF TORQUE. THE RT ENGINE TQ AND T5 STARTED FLUCTUATING. RT P
- [SDR ERA2006F00001](https://openairdocs.org/sdr/ERA2006F00001), Jan 25, 2006: LINE. CRACKED. NR1 ENGINE FUEL FLOW DECLINED TO IDLE AND REMAINED IN-FLIGHT. FEATHERED PROPELLER, LT ENGINE RUNNING AT IDLE. ALL ENGINE INDICATIONS NORMAL FOR IDLE NG. UNABLE 
- [SDR 2005FA0001609](https://openairdocs.org/sdr/2005FA0001609), Dec 2, 2005: HOUSING. FAILED. POWER TURBINE SHAFT HOUSING CRACKED AND BROKEN, PN 310427901. (K)
- [SDR CA051108004](https://openairdocs.org/sdr/CA051108004), Nov 4, 2005: PITOT HEAD. DAMAGED. (CAN) THE CAPTAIN REPORTED A 10 - 15 KTS SPLIT ON AIRSPEED INDICATIONS BETWEEN PILOT-F/O INDICATORS. MAINTENANCE INVESTIGATION REVEALED THAT THE CAPTAINS (LT) P
- [SDR CA051024009](https://openairdocs.org/sdr/CA051024009), Oct 24, 2005: RIB. MISMANUFACTURED. PART NOT TO LIMITS PROVIDED BY MANUFACTURER. ANGLE AND DIMENSIONS NOT TO THE SPECS ON THE MYLAR. MATERIAL TYPE AND THICKNESS ARE CORRECT.
- [SDR CA051018003](https://openairdocs.org/sdr/CA051018003), Oct 10, 2005: FRAME. CRACKED. DURING SCHEDULED INSPECTION FOR SB 6/521 AND CF 95-12, A SINGLE CRACK WAS SUSPECTED IN THE WEB AREA OF THE AFT SECTION OF THE RT SIDE FRAME. AN EDDY CURRENT INS

All 197: https://openairdocs.org/engine/u-a-canada-pt6a-20/reports.md

## STCs that may be installed (OpenAirDocs) (13)

Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SE00003EN](https://openairdocs.org/stc/SE00003EN): Instructions for Continued Airworthiness for the PT6A-6/C20, -20, -20A and, -20B engine models that define specific maintenance tasks and their associated maintenance schedules, and that are used as a supplement to the applicable Pratt & Whitney Canada manuals. MORE Company Inc
- [STC 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 SE615GL](https://openairdocs.org/stc/SE615GL): Incorporation of a fuel flow transducer. Shadin Avionics
- [STC SE09257SC](https://openairdocs.org/stc/SE09257SC): Convert P&W Engine Models PT6A-15AG, -27, and -28, into PT6A-34 configuration. Covington Aircraft Engines, Inc
- [STC SE659NE](https://openairdocs.org/stc/SE659NE): Installation of oil tank filler neck check valve, P/N TSA-76A. Aviation Components Support
- [STC SE1269EA](https://openairdocs.org/stc/SE1269EA): Stripping and recoating of compressor turbine blades, P/N 3023401, with Walbar Metals, Inc. Airwork Corporation
- [STC SE5601SW](https://openairdocs.org/stc/SE5601SW): Replacement splined end and oil mist lubrication on accessory drive gearshaft. Aviall of Texas, Inc
- [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) (385, 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
- [3045951-02AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135029382220260722151307.0001): Detector, Chip, Magnetic. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3045951-02 · May 27, 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
- [3007355CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID150958507420260217165221.0001): Spacer, Adjusting. Core Parts LLC · PMA PQ05326NM · Replaces 3007355 · Feb 11, 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
- [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
- [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
- [3049871-01CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID134847727520260108162918.0001): Washer, Key. CORE PARTS LLC · PMA PQ05326NM · Replaces 3049871-01 · 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
- [3010671CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189963175420241202221129.0001): Washer, Flat. CORE PARTS LLC · PMA PQ05326NM · Replaces 3010671 · 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
- [3006523CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132375139220240509162259.0001): Bearing, Sleeve, Flanged. CORE PARTS LLC · PMA PQ05326NM · Replaces 3006523 · Mar 25, 2024
- [3008676CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120421035120240509162301.0001): Bearing, Sleeve, Flanged. CORE PARTS LLC · PMA PQ05326NM · Replaces 3008676 · Mar 25, 2024
- [3003987CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125662034220231204145325.0001): Pin, Lock. CORE PARTS LLC · PMA PQ05326NM · Replaces 3003987 · Aug 1, 2023
- [3016598CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189342823620231204151230.0001): Washer, Key. CORE PARTS LLC · PMA PQ05326NM · Replaces 3016598 · Jul 26, 2023
- [3005290CLACP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171588224920250611143002.0001): Weight, Balance, Compressor. CORE PARTS LLC · PMA PQ05326NM · Replaces 3005290CLA · May 19, 2023
- [3005290CLECP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID142064254420250611143003.0001): Weight, Balance, Compressor. CORE PARTS LLC · PMA PQ05326NM · Replaces 3005290CLE · May 19, 2023
- [3005290CLDCP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID141205886020250611143003.0001): Weight, Balance, Compressor. CORE PARTS LLC · PMA PQ05326NM · Replaces 3005290CLD · May 19, 2023
- [3005290CLBCP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID118455233520250611143003.0001): Weight, Balance, Compressor. CORE PARTS LLC · PMA PQ05326NM · Replaces 3005290CLB · May 19, 2023
- [3005290CLCCP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103292467820250611143003.0001): Weight, Balance, Compressor. CORE PARTS LLC · PMA PQ05326NM · Replaces 3005290CLC · May 19, 2023
- [CH92106-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182950761420231024191314.0001): Exciter-Ignition. Champion Aerospace LLC · PMA PQ1287CE · Replaces Champion… · May 12, 2023
- [CH92106-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182423481520231024191312.0001): Exciter-Ignition. Champion Aerospace LLC · PMA PQ1287CE · Replaces Pratt & Whitney Canada … · May 12, 2023
- [CH92106-5](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID170076831020231024191315.0001): Exciter-Ignition. Champion Aerospace LLC · PMA PQ1287CE · Replaces Unison10-381550-110-381550-49047840-190… · May 12, 2023
- [TA3057-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID161272206620230515183738.0001): Turbine Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · May 5, 2023
- [TA3057-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146529815220230515183804.0001): Turbine Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · May 5, 2023
- [540-1407-3](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID149574330120240306163319.0001): Valve, Bleed (Small PT6). Honeywell International Inc. · PMA PQ1222NM · Replaces 3049038-02 · Apr 14, 2023
- [206684ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID193915393720230321122918.0001): Gasket, Propeller Governor Mounting. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 206684 · Mar 16, 2023
- [206685ACD](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID184509980620230321122855.0001): Gasket, Governor Mounting. Aircraft Component Design LLC · PMA PQ2138NE · Replaces 206685 · Mar 16, 2023
- [3018176CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID141519552120230126122635.0001): Washer, Key. CORE PARTS LLC · PMA PQ05326NM · Replaces 3018176 · Feb 4, 2023
- [3012675CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID172835041720230717162244.0001): Nut, Self-Locking, Hex. CORE PARTS LLC · PMA PQ05326NM · Replaces 3012675 · Jan 23, 2023
- [3012414CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168780316620230717162242.0001): Nut, Self-Locking, 12 Point. CORE PARTS LLC · PMA PQ05326NM · Replaces 3012414 · Jan 23, 2023
- [2524439-8](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125969282220241002190412.0001): Fuel Control Unit Turboprop. Honeywell International Inc. · PMA PQ1222NM · Replaces 3053392-01 · Jan 20, 2023
- [3008676CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117155957820230717173023.0001): Bearing, Sleeve,Flanged. CORE PARTS LLC · PMA PQ05326NM · Replaces 3008676 · Jan 16, 2023
- [3006523CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113721863120230717173021.0001): Bearing, Sleeve,Flanged. CORE PARTS LLC · PMA PQ05326NM · Replaces 3006523 · Jan 16, 2023
- [3012456CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID184156576820241202220928.0001): Seal, Ring. CORE PARTS LLC · PMA PQ05326NM · Replaces 3012456 · Jan 4, 2023
- [3012457CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157203372020241202220930.0001): Seal, Ring. CORE PARTS LLC · PMA PQ05326NM · Replaces 3012457 · Jan 4, 2023
- [3010117CL1CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183743693820230126115859.0001): Weight, Balance, Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3010117CL1 · Nov 22, 2022
- [3010117CL3CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID183682707920230126115850.0001): Weight, Balance, Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3010117CL3 · Nov 22, 2022
- [3010117CL4CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182297337020230126115851.0001): Weight, Balance, Turbine. CORE PARTS LLC · PMA PQ05326NM · Replaces 3010117CL4 · Nov 22, 2022

All of them: https://openairdocs.org/engine/u-a-canada-pt6a-20/pma.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.