# Pratt & Whitney Canada PW121 - Type: Engine model (FAA registry) - Registry code: 52124 - Manufacturer (registry): P&W CANADA - Model: PW121 - Engine type: Turbo-prop - Power: 1,950 hp - Data sheet: [TCDS E20NE](https://openairdocs.org/tcds/E20NE) (OpenAirDocs) - Holder: Pratt & Whitney Canada Corp. - Installed in: 14 registered aircraft - Page: https://openairdocs.org/engine/pratt-whitney-canada-pw121 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 2015-20-03](https://openairdocs.org/ad/2015-20-03): Fuel nozzle and the fuel manifold flow adapter · Pratt & Whitney Canada PW120, PW121, PW121A and 6 more. Effective Nov 18, 2015 - [AD 2012-26-08](https://openairdocs.org/ad/2012-26-08): Propeller shafts · Pratt & Whitney Canada PW118, PW118A, PW118B and 20 more. Effective Feb 15, 2013 - [AD 2006-19-06](https://openairdocs.org/ad/2006-19-06): Propeller shaft · Pratt & Whitney Canada PW118, PW118A, PW118B and 14 more. Effective Sep 29, 2006 - [AD 2003-21-03](https://openairdocs.org/ad/2003-21-03): Low pressure rotor speed (NL) sensor · Pratt & Whitney Canada PW118, PW120, PW120A and 1 more. Effective Nov 20, 2003 - [AD 2003-16-04](https://openairdocs.org/ad/2003-16-04): Fuel heaters · Pratt & Whitney Canada PW118, PW118A, PW118B and 19 more. Effective Sep 10, 2003 - [AD 98-14-02](https://openairdocs.org/ad/98-14-02): Fuel Manifold Transfer Tubes · Pratt & Whitney Canada PW118, PW118A, PW118B and 17 more. Effective Aug 31, 1998 - [AD 97-17-05](https://openairdocs.org/ad/97-17-05): Gas Generator Case Drain Ports · Pratt & Whitney Canada PW118, PW118A, PW118B and 17 more. Effective Sep 9, 1997 - [AD 94-03-02](https://openairdocs.org/ad/94-03-02): High Pressure Turbine Disks · Pratt & Whitney Canada PW118, PW118A, PW120 and 5 more. Effective Feb 16, 1994 - [AD 92-01-08](https://openairdocs.org/ad/92-01-08): High Pressure Rotor · Pratt & Whitney Canada PW118, PW118A, PW120 and 5 more. Effective Jul 27, 1992 - [AD 91-06-02](https://openairdocs.org/ad/91-06-02): Turbomachinery Magnetic Chip Detector · Pratt & Whitney Canada PW118, PW118A, PW120 and 6 more. Effective Mar 29, 1991 - [AD 91-01-03](https://openairdocs.org/ad/91-01-03): Hydromechanical Fuel Control Units · Pratt & Whitney Canada JT15D-5, PW118, PW118A and 3 more. Effective Jan 7, 1991 - [AD 88-26-51](https://openairdocs.org/ad/88-26-51): High Pressure Turbine Components · Pratt & Whitney Canada PW118, PW118A, PW120 and 2 more. Effective Sep 22, 1989 Historical (superseded or no longer in force): - [AD 2014-14-02](https://openairdocs.org/ad/2014-14-02) (historical): O-ring seal · Pratt & Whitney Canada PW120, PW121, PW121A and 6 more. Effective Aug 15, 2014 - [AD 2012-11-14](https://openairdocs.org/ad/2012-11-14) (historical): Propeller shafts · Pratt & Whitney Canada PW118, PW118A, PW118B and 20 more. Effective Jul 20, 2012 ## Registered aircraft (14) - [N228DG](https://openairdocs.org/aircraft/N228DG): [Konair US LLC](https://openairdocs.org/faa-owner/KONAIR%20US%20LLC), [Miami, FL](https://openairdocs.org/faa-place/FL/Miami), S/N 128 - [N597SB](https://openairdocs.org/aircraft/N597SB): [International Air Services Inc Trustee](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIR%20SERVICES%20INC%20TRUSTEE), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), built 1997, S/N 415 - [N798CR](https://openairdocs.org/aircraft/N798CR): [Southwest Aviation Enterprises](https://openairdocs.org/faa-owner/SOUTHWEST%20AVIATION%20ENTERPRISES), [Haslet, TX](https://openairdocs.org/faa-place/TX/Haslet), built 1993, S/N 358 - [N884EA](https://openairdocs.org/aircraft/N884EA): [Tvpx Ars Inc Trustee](https://openairdocs.org/faa-owner/TVPX%20ARS%20INC%20TRUSTEE), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 1994, S/N 387 - [N891EA](https://openairdocs.org/aircraft/N891EA): [Tvpx Ars Inc Trustee](https://openairdocs.org/faa-owner/TVPX%20ARS%20INC%20TRUSTEE), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), S/N 335 - [N901FX](https://openairdocs.org/aircraft/N901FX): [Federal Express Corp](https://openairdocs.org/faa-owner/FEDERAL%20EXPRESS%20CORP), [Memphis, TN](https://openairdocs.org/faa-place/TN/Memphis), S/N 172 - [N903FX](https://openairdocs.org/aircraft/N903FX): [Federal Express Corp](https://openairdocs.org/faa-owner/FEDERAL%20EXPRESS%20CORP), [Memphis, TN](https://openairdocs.org/faa-place/TN/Memphis), S/N 179 - [N906FX](https://openairdocs.org/aircraft/N906FX): [Federal Express Corp](https://openairdocs.org/faa-owner/FEDERAL%20EXPRESS%20CORP), [Memphis, TN](https://openairdocs.org/faa-place/TN/Memphis), S/N 280 - [N907FX](https://openairdocs.org/aircraft/N907FX): [Federal Express Corp](https://openairdocs.org/faa-owner/FEDERAL%20EXPRESS%20CORP), [Memphis, TN](https://openairdocs.org/faa-place/TN/Memphis), built 1992, S/N 286 - [N984HA](https://openairdocs.org/aircraft/N984HA): [Northrop Grumman Systems Corp](https://openairdocs.org/faa-owner/NORTHROP%20GRUMMAN%20SYSTEMS%20CORP), [El Segundo, CA](https://openairdocs.org/faa-place/CA/El%20Segundo), built 1994, S/N 377 - [N990AV](https://openairdocs.org/aircraft/N990AV): [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 1988, S/N 099 - [N990BH](https://openairdocs.org/aircraft/N990BH): [Big Horn Airways Inc](https://openairdocs.org/faa-owner/BIG%20HORN%20AIRWAYS%20INC), [Sheridan, WY](https://openairdocs.org/faa-place/WY/Sheridan), built 1991, S/N 265 - [N991BH](https://openairdocs.org/aircraft/N991BH): [Big Horn Airways Inc](https://openairdocs.org/faa-owner/BIG%20HORN%20AIRWAYS%20INC), [Sheridan, WY](https://openairdocs.org/faa-place/WY/Sheridan), built 1992, S/N 324 - [N992BH](https://openairdocs.org/aircraft/N992BH): [Big Horn Airways Inc](https://openairdocs.org/faa-owner/BIG%20HORN%20AIRWAYS%20INC), [Sheridan, WY](https://openairdocs.org/faa-place/WY/Sheridan), built 1991, S/N 258 ## 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 DCA12IA141](https://openairdocs.org/ntsb/DCA12IA141), Sep 5, 2012: De Havilland DHC8 (N886EA), Soldotna, AK, incident, no damage. Probable cause: an in-flight loss of control due to the flight crew's inattention to airspeed, pitch attitude, and engine power during the climb leading to an aerodynamic stall. Contributing to the incident was the… - [NTSB CEN09MA142](https://openairdocs.org/ntsb/CEN09MA142), Jan 27, 2009: Aerospatiale Alenia ATR 42-320 (N902FX), Lubbock, TX, substantial damage. Probable cause: The flight crew's failure to monitor and maintain a minimum safe airspeed while executing an instrument approach in icing conditions, which resulted in an aerodynamic stall at low altitude.… - [NTSB LAX07CA077](https://openairdocs.org/ntsb/LAX07CA077), Feb 1, 2007: Bombardier DHC-8-103 (N979HA), Kaunakakai, HI, no damage. Probable cause: an in-flight encounter with clear air turbulence, which resulted in a serious injury to a deadheading crewmember. - [NTSB NYC03LA004](https://openairdocs.org/ntsb/NYC03LA004), Oct 15, 2002: de Havilland DHC-8-102 (N847EX), Albany, NY, substantial damage. Probable cause: An in-flight collision with birds. A factor was the night conditions. - [NTSB NYC02LA008](https://openairdocs.org/ntsb/NYC02LA008), Oct 13, 2001: Aerospatiale ATR 42-320 (N34820), Yardley, PA, substantial damage. Probable cause: an in flight collision with birds. - [NTSB FTW97LA081](https://openairdocs.org/ntsb/FTW97LA081), Jan 8, 1997: Aerospatiale ATR-42-320 (N14829), Houston, TX, substantial damage. Probable cause: The pilot's failure to follow the proper taxi route while taxiing back to the terminal. A factor was the glare radiating from the airport's terminal area. - [NTSB NYC92LA005](https://openairdocs.org/ntsb/NYC92LA005), Oct 12, 1991: Aerospatiale ATR-42-320 (N25811), Bridgeport, CT, minor damage, 1 fatal. Probable cause: THE EMPLOYEE'S FAILURE TO FOLLOW PROPER PROCEDURES AND THE DIVERSION OF HER ATTENTION WHICH RESULTED IN HER BEING STRUCK BY A SPINNING PROPELLER. ## FAA accident and incident reports (55, newest 50) 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 20210817008639I](https://openairdocs.org/incident/20210817008639I), Aug 17, 2021: Dehavilland DHC-8-106 (N885EA), Anchorage, AK, Minor damage. On departure with the aircraft leveling off at 6000 feet, the flight crew noticed that the copilot's windshield began to crack. The crew requested a return to… - [Incident 20150512007009I](https://openairdocs.org/incident/20150512007009I), May 12, 2015: Dehavilland DHC-8-106 (N885EA), Anchorage, AK, No damage. On 5/12/2015 at 1445 local time N885EA, a corvus airlines owned DHC-8-106 departed Anchorage, AK for kodiak, AK. On a scheduled FAR 121 filight. Wx was clear,… - [Incident 20121115025319I](https://openairdocs.org/incident/20121115025319I), Nov 15, 2012: Aerospatiale/Aeritalia ATR 42-320 (N900FX), Misoula, MT, Minor damage. Enroute mso to gtf at 13,500 feet:flight 7820:pilot encountered a slight yaw to the left and a momentary torque decrease of 5% on the #1 engine. Pilot then… - [Incident 20120905023859I](https://openairdocs.org/incident/20120905023859I), Sep 5, 2012: Boeing / Dehavilland DHC-8-103 (N886EA), Anchorage, AK, Minor damage. Era 874, dash 8, departed ted stevens international airport, Anchorage, AK on a scheduled flight to homer, AK with 12 passengers and three crewmembers. The… - [Incident 20110322005699I](https://openairdocs.org/incident/20110322005699I), Mar 22, 2011: Aerospatiale/Aeritalia ATR 42-320 (N901FX), Rapid City, SD, No damage. Supplement: flt 8584 from fso to rap: during flap retraction, flaps stuck at 12 degreesand later retracted uncommanded. Crew elected to land in bff due to… - [Accident 20090127001639A](https://openairdocs.org/incident/20090127001639A), Jan 27, 2009: Aerosp ATR42320 (N902FX), Lubbock, TX, Destroyed. (-23) On January 27, 2009, at 0437 CST, N902FX, an aerospatiale ATR42-320, operating as empire flight 8284 was destroyed when it collided with terrain short of… - [Accident 20070131020129A](https://openairdocs.org/incident/20070131020129A), Jan 31, 2007: Dhav DHC8103 (N979HA), Maui, HI, No damage. (-23) Moku 979 was a reposition ferry flight from hnl to ogg. There was one flight attendant and two deadheading pilots in the cabin. The PIC was of the… - [Incident 20040417007889I](https://openairdocs.org/incident/20040417007889I), Apr 17, 2004: Dhav DHC8103 (N807WP), Lanai City, HI. (-23) [privacy data omitted] a passenger occupying seat 7C, was injured when severe turbulence was encountered on climb-out from lny. ^priv^ said her seat belt… - [Incident 20031026032209I](https://openairdocs.org/incident/20031026032209I), Oct 26, 2003: Dhav DHC8102 (N848EX), Ithaca, NY. (-23) On October 26, 2003 at 06:48EST a DHC-8-102 operated by allegheny airlines inc, (pcaa), shutdown the #1 engine while climbing out of ith due to the… - [Incident 20031006032189I](https://openairdocs.org/incident/20031006032189I), Oct 6, 2003: Dhav DHC8102 (N844EX), Rochester, NY. (-23) On October 6, 2003 at 10:21 EST a DHC-8-102 operated by allegheny airlines inc, (pcaa), had an "engine fire indication on #1 engine during taxi in.… - [Incident 20030905032629I](https://openairdocs.org/incident/20030905032629I), Sep 5, 2003: Dhav DHC8102 (N979HA), Syracuse, NY. (-23) On 09/05/2003 at approx 07:08 local time a DHC-8-200 aircraft, registration number N979HA, operated by pcaa was taxiing out of the parking area at syr.… - [Accident 20021014026679A](https://openairdocs.org/incident/20021014026679A), Oct 14, 2002: Dhav DHC8102 (N847EX), Albany, NY, Substantial damage. (-23) A DHC-8 aircraft was enroute from dca to alb. 10 miles west of alb at 0015Z descending through 4,000FT MSL a flock of 10-15 geese were encountered. The… - [Incident 20020923029819I](https://openairdocs.org/incident/20020923029819I), Sep 23, 2002: Dhav DHC8102 (N848EX), Syracuse, NY. (-23) On September 23, 2002, allegheny flight 3848 departed Syracuse-Hancock international airport (syr) when the crew reported #1 engine oil pressure… - [Incident 20020529018109I](https://openairdocs.org/incident/20020529018109I), May 29, 2002: Dhav DHC8102 (N844EX), Middletown, PA. (-23) On climbout, flight 3741 at Middletown, Pennsylvania, the landing gear indicating system failed. The crew returned to the field with no further incident.… - [Incident 20011013028359I](https://openairdocs.org/incident/20011013028359I), Oct 13, 2001: Aerosp ATR42320 (N34820), Newark, NJ, Substantial damage. (-23) At 1900E Continental express (jetlink) flight 3354, an ATR42-320 struck 2 canadian geese about 8 miles from yardley, pa enroute from norfolk (orf), VA to… - [Incident 20010926028299I](https://openairdocs.org/incident/20010926028299I), Sep 26, 2001: Aerosp ATR42320 (N19812), Syracuse, NY. (-23) Crew reported the landing gear failed to retract after t/o. the aircraft returned to syr and landed on runway 28. No assistance was required and the… - [Incident 20010704013559I](https://openairdocs.org/incident/20010704013559I), Jul 4, 2001: Dhav DHC8102 (N844EX), Rochester, NY. (-23) On July 4, 2001, at 1630 EST, a Dehavilland DHC-8-102, s/n 339, N844EX, operated by allegheny airlines inc., experienced smoke in the aircraft cockpit… - [Incident 20010318003879I](https://openairdocs.org/incident/20010318003879I), Mar 18, 2001: Dhav DHC8106 (N883EA), Kodiak, AK. (-23) Pilot departed adq reported a gear warning light. A/c dumped fuel and landed at adq at 1655 without incident. A/c was ferried back to anchorage with gear… - [Incident 20010225002859I](https://openairdocs.org/incident/20010225002859I), Feb 25, 2001: Aerosp ATR42320 (N14821), Newark, NJ. (-23) After takeoff flight control columns began to make squeaking and grinding sounds. Sounded like possible cables. Main. Lubricated cables and provided… - [Incident 20001211038369I](https://openairdocs.org/incident/20001211038369I), Dec 11, 2000: Aerosp ATR42320 (N14819), Rochester, NY. (-23) On Monday December 12, 2000 a Continental express atr 42, N14819, flight 3117, reported an electrical problem after take off. The aircraft returned and… - [Incident 20000923038399I](https://openairdocs.org/incident/20000923038399I), Sep 23, 2000: Aerosp ATR42320 (N15818), Rochester, NY. (-23) On Saturday, September 23, 2000 at 1419 local time, an ATR-42 aircraft, operated by Continental express, inc (C2XA) under 14 CFR part 121, as flight… - [Incident 20000902023629I](https://openairdocs.org/incident/20000902023629I), Sep 2, 2000: Aerosp ATR42320 (N34817), Syracuse, NY. (-23)On Saturday, September 2, 2000, at 1402 local, a Continental express atr 42, N34817, flight 3653, returned to land at syr due to smoke in the cockpit. The… - [Incident 20000811027339I](https://openairdocs.org/incident/20000811027339I), Aug 11, 2000: Aerosp ATR42320 (N15818), Cleveland, OH. (-23)C2XA flight safety reported that an ATR-42 was up-set by B-757 wake turbulence. The incident occurred during arrival in kcle area at 7000 ft. and… - [Incident 20000718026019I](https://openairdocs.org/incident/20000718026019I), Jul 18, 2000: Aerosp ATR42320 (N14832), Buffalo, NY. (-23) On July 18, 2000 at 1015 local Continental express (C2XA), jet link 3215, departed Buffalo, NY (buf) enroute to newark, NJ (ewr). The crew noted smoke in… - [Incident 20000608032099I](https://openairdocs.org/incident/20000608032099I), Jun 8, 2000: Aerosp ATR42320 (N14821), Rochester, NY. (-23)On Thursday, June 8, 2000, at 1755 local, a Continental express ATR-42-320, N14821, flight 3621, flight 3631, returned to Rochester international airport,… - [Incident 20000310004119I](https://openairdocs.org/incident/20000310004119I), Mar 10, 2000: Aerosp ATR42320 (N16824), Erie, PA. During a flight from rochester, NY, to cleveland, OH, the left engine oil pressure indicator started to fluctuate. The pilot performed a precautionary engine… - [Incident 19991223036489I](https://openairdocs.org/incident/19991223036489I), Dec 23, 1999: Dhav DHC8103 (N803WP), Kaunakakai, HI. (-23) MKU1429 @ 8,000', MKU1570 @ 7,000', N47D @ 6,500'. The TCAS on mku 1570 gave a resolution advisory to climb, loosing required separation by ATC. The TCAS… - [Incident 19980429014729I](https://openairdocs.org/incident/19980429014729I), Apr 29, 1998: Dhav DHC8* (N803WP), Honolulu, HI. Narative missing. - [Incident 19980403017379I](https://openairdocs.org/incident/19980403017379I), Apr 3, 1998: Dhav DHC8102 (N979HA), Philadelphia, PA, Minor damage. Electrical odor detected. Returned to phl. Found metal flashlight shorting out window heat relay to floor board. - [Incident 19970815027959I](https://openairdocs.org/incident/19970815027959I), Aug 15, 1997: Aerosp ATR42320 (N14834), Newark, NJ. Flew thru aircraft wake. Pitch disconnected. Flew to airport manually. Prior problems with pitch disconnect type. - [Incident 19970517042369I](https://openairdocs.org/incident/19970517042369I), May 17, 1997: Aerosp ATR42320 (N21837), Baton Rouge, LA. Narrative: flight 3873, ATR-42, N21837, started taxiing for departure from the Baton Rouge airport with the main cabin door open. Ground personnel did not… - [Incident 19970223004519I](https://openairdocs.org/incident/19970223004519I), Feb 23, 1997: Aerosp ATR42320 (N14815), Binghamton, NY. Lost oil pressure NR2 engine. Diverted to bgm. Engine oil breather tube carbon seal defective. Removed. Replaced. - [Accident 19970107045859A](https://openairdocs.org/incident/19970107045859A), Jan 7, 1997: Aerosp ATR42320 (N14829), Houston, TX, Substantial damage. (.4)The airplane taxied off the hard surface into the soft grass, coming to rest about 50 feet beyond the edge of the hard surface taxiway. The captain stated… - [Incident 19960922037169I](https://openairdocs.org/incident/19960922037169I), Sep 22, 1996: Aerosp ATR42320 (N14829), Cleveland, OH, Minor damage. Narrative: flight bra 3283 (coex), N14829, lightning strike 40 mi. Sw cle returned to cle. Aircraft ferried to burlington, VT for inspection & maintenance.… - [Incident 19960907030159I](https://openairdocs.org/incident/19960907030159I), Sep 7, 1996: Aerosp ATR42320 (N34820), Rochester, NY. Narrative: on September 7, 1996 at 1118 EDT, an aerospace ATR-42, N34820, flight 3623, operated by Continental express, inc. during level flight experienced a… - [Incident 19960206004039I](https://openairdocs.org/incident/19960206004039I), Feb 6, 1996: Aerosp ATR42320 (N17831), Corpus Christi, TX. Narrative: flight 2590, an ATR42-320 departed brownsville for houston intercontinental at 1200 central time with 35 passengers and a crew of 3. Approximately… - [Incident 19951004043799I](https://openairdocs.org/incident/19951004043799I), Oct 4, 1995: Aerosp ATR42320 (N34820), Newark, NJ. Narrative: after completing before start check list, switched prop brake to off, got unlock light, prop started spinning. After approx. 10 sec. We smelled… - [Incident 19941108046389I](https://openairdocs.org/incident/19941108046389I), Nov 8, 1994: Aerosp ATR42320 (N14832), Lafayette, LA, Minor damage. Struck dip in runway on takeoff. PIC reported sharp jolt. On landing found right nose wheel rim fractured. - [Incident 19940901035459I](https://openairdocs.org/incident/19940901035459I), Sep 1, 1994: Aerosp ATR42320 (N14815), Baton Rouge, LA, Minor damage. During marshall to gate left wing struck gate 2 jetway. Maintenance on jetway caused abnormal position. - [Incident 19940602045409I](https://openairdocs.org/incident/19940602045409I), Jun 2, 1994: Aerosp ATR42320 (N14813), Little Rock, AR. Oil pressure problem indication. Shut down NR2 engine. Landed destination. Starter generator garloc seal defective. - [Incident 19940128011289I](https://openairdocs.org/incident/19940128011289I), Jan 28, 1994: Aerosp ATR42320 (N15818), Newark, NJ. Narrative: investigation revealed that after leveling at 16,000 feet, the aircraft began to accumulate ice. Airspeed decreased from 200 KIAS to 142 KIAS. Angle… - [Incident 19930923041449I](https://openairdocs.org/incident/19930923041449I), Sep 23, 1993: Aerosp ATR42320 (N17831), Beaumont Port A, TX, Minor damage. Aircraft rolled forward striking a truck with prop blade. Parking brake in emergency position instead of park. - [Incident 19930617023419I](https://openairdocs.org/incident/19930617023419I), Jun 17, 1993: Aerosp ATR42320 (N34817), Allentown, PA. Cabin filled with smoke, diverted to airport. Metal in oil filter indicates internal engine failure. - [Incident 19930320010159I](https://openairdocs.org/incident/19930320010159I), Mar 20, 1993: Aerosp ATR42320 (N14833), Cleveland, OH. NR2 engine failed after takeoff. Returned. Landed safely. Replaced engine. - [Incident 19920927045529I](https://openairdocs.org/incident/19920927045529I), Sep 27, 1992: Aerosp ATR42320 (N34820), Houston, TX. Left engine oil pressure light on. Landed safely. Passengers evacuated on runway. Metal particles found in oil tank - [Incident 19920608032039I](https://openairdocs.org/incident/19920608032039I), Jun 8, 1992: Aerosp ATR42320 (N14834), Newark, NJ. Encountered turbulence while maneuvering around cummulus clouds. Flight attendant slightly injured. - [Incident 19920608026979I](https://openairdocs.org/incident/19920608026979I), Jun 8, 1992: Aerosp ATR42320 (N19812), Durango, CO. Unsafe gear indication on approach. Landed safely. Bolt in down lock pivot point brace overtorqued. - [Incident 19920606031679I](https://openairdocs.org/incident/19920606031679I), Jun 6, 1992: Aerosp ATR42320 (N14821), Beaumont, TX. Aircraft encountered strong negative g's for two seconds. Flight attendant hit top of cabin. - [Incident 19920213007549I](https://openairdocs.org/incident/19920213007549I), Feb 13, 1992: Aerosp ATR42320 (N15818), Albany, NY, Minor damage. Fire visible out of right engine. Fire bell sounded. Returned. Landed safely. Replaced NR2 engine. - [Accident 19911012045899A](https://openairdocs.org/incident/19911012045899A), Oct 12, 1991: Aerosp ATR42320 (N25811), Bridgeport, CT, Minor damage, 1 fatal. Ramp agent was struck by right engine propeller while assisting loading baggage. All 55: https://openairdocs.org/engine/pratt-whitney-canada-pw121/incidents.md ## Service difficulty reports (444, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR CA190628005](https://openairdocs.org/sdr/CA190628005), Jun 19, 2019: BOLT. MISSING. (CAN) DURING INSPECTION, TECHNICIANS HAD FOUND DHC8-106 SN 324 WITH THE #1 ENGINE (P/N PW121 ENGINE S/N PCE-120144 MODULE S/N TM-120144) WITH THE FORWARD ENGINE - [SDR CA190614021](https://openairdocs.org/sdr/CA190614021), Jun 14, 2019: FRAME. CRACKED. (CAN) DURING CLOSE UP, A CRACK WAS FOUND ON FRAME 26, PART NUMBER S53572700200. W/O 33426718 NR 00386 ORIGINATING TASK GEN-05-00-400-0002..ATR TO SUPPLY REPAIR - [SDR CA190703018](https://openairdocs.org/sdr/CA190703018), May 15, 2019: FUEL HEATER. MALFUNCTIONED. (CAN) DURING INSTALL OF FUEL HEATER ON #1 ENGINE IT WAS DISCOVERED THAT THERE WAS WHAT APPEARED TO BE MEDIA BLAST (GLASS BEAD) IN THE FILTER BOWL. THE UNIT WAS - [SDR CA190206002](https://openairdocs.org/sdr/CA190206002), Jan 29, 2019: ROTOR. DAMAGED. (CAN) TURBOMACHINE WAS RECEIVED FOR INVESTIGATION AND REPAIR AFTER THE OPERATOR REPORTED SHIFTING OF THE LP BLADES, AN OVERTORQUE EVENT THAT PEAKED AT 124.54% F - [SDR CA181220002](https://openairdocs.org/sdr/CA181220002), Oct 24, 2018: ENGINE. POWER LOSS. (CAN) DURING DESCENT, THE FLIGHT CREW NOTICED THAT THE TORQUE INDICATION OF NO.1 ENGINE HAD DECREASED TO 0 FOOT-POUNDS, AND THE PROPELLER REVOLUTIONS PER MINUTE - [SDR CA180827006](https://openairdocs.org/sdr/CA180827006), Aug 14, 2018: ENGINE. MALFUNCTIONED. (CAN) ON TAKE-OFF, THE #2 ENGINE ITT REACHED 816 DEGREES TRIGGERING A WARNING LIGHT. CREW IMMEDIATELY REDUCED POWER ON THE #2 ENGINE TO APPROXIMATELY 80% TORQUE - [SDR 7C7A2017080100333](https://openairdocs.org/sdr/7C7A2017080100333), Aug 1, 2017: ENGINE. DAMAGED. CABIN OCCUPANTS AND FA COMPLAINED OF ACRID FUMES DURING DESECENT . FLIGHT CREW DID DETECT A SLIGHT ODOR THE COCKPIT. NR 1 ENGINE CHANGED DUE TO CAT C DAMAGE. - [SDR 7C7A2017051900328](https://openairdocs.org/sdr/7C7A2017051900328), Apr 30, 2017: HMU. DEFECTIVE. NR 1 ENGINE EXPERIENCED A LOSS OF POWER DURING ECU SELECTION FROM TOP TO NORMAL, ALSO WHEN IN TOP AND REDUCING POWER. LEVER ANGLE POWER REDUCED AS IF THE ENGINE - [SDR 7C7A2016091900254](https://openairdocs.org/sdr/7C7A2016091900254), Sep 19, 2016: LINE. LEAKING. NR 1 ENGINE SHOWS SIGNS OF LEAKING FROM UNIT SPLIT LINE. REMOVED AND REPLACED PCU AND ADAPTOR SEALS. IAW CMM 61-22-00. - [SDR 7C7A2016091900255](https://openairdocs.org/sdr/7C7A2016091900255), Sep 19, 2016: SEAL. LEAKING. NR 2 ENGINE OIL PRESSURE WARNING ILLUMINATED. GAUGE INDICATED 50 PSI. ACCOMPOSHED LOW OIL PRESSURE QRH CHECKLIST. OIL PRESSURE INCREASED SLIGHTLY AND WARNING LI - [SDR 7C7A2016090600253](https://openairdocs.org/sdr/7C7A2016090600253), Sep 6, 2016: SEAL. FAILED. SHUT DOWN NR 1 ENGINE DUE TO LOW OIL PRESSURE, DETERMINED LEAK AT PROP SHAFT SEAL. - [SDR CA160316001](https://openairdocs.org/sdr/CA160316001), Mar 14, 2016: STATOR. DAMAGED. (CAN) ENGINE WAS RECEIVED FOR INVESTIGATION AND REPAIR AFTER THE OPERATOR REPORTED A DENT ON THE T/E OF AN LP BLADE AIRFOIL. DUE TO THE TIME ACCUMULATED BY THE - [SDR 7C7A20151123097](https://openairdocs.org/sdr/7C7A20151123097), Nov 21, 2015: OIL COOLER. LEAKING. APPROX 1 HR INTO THE FLIGHT, THE MASTER WARNING LT INTERMITTENTLY FLASHED. A COUPLE MINUTES LATER WE NOTICED NR 1 ENG OIL PRESS FLUCTUATIONS, 60-45 APPROX, WE F - [SDR CA151117016](https://openairdocs.org/sdr/CA151117016), Nov 7, 2015: GARLOCK SEAL. LEAKING. (CAN) WHILE IN CRUISE, THE NR 1 ENGINE BEGAN LOSING OIL PRESSURE. THE CREW CONDUCTED A PRECAUTIONARY SHUTDOWN AND CONTINUED ON TO THEIR DESTINATION WHERE IT LAN - [SDR CA151020004](https://openairdocs.org/sdr/CA151020004), Oct 17, 2015: ACTUATOR. LEAKING. (CAN) FOUND DURING MAINTENANCE GROUND RUNS NLG DOOR ACTUATOR LEAKING FROM ACTUATOR HOUSING. REPLACED NLG DOOR ACTUATOR. - [SDR CA151020005](https://openairdocs.org/sdr/CA151020005), Oct 17, 2015: MANIFOLD. BYPASSING. (CAN) WHILE PERFORMING MAINTENANCE USING GROUND HYDRAULIC CART, FOUND THAT THE HYDRAULIC GROUND CART DRIVES THE NR 2 SPU SUSPECT INTERNAL CHECK VALVE U/S IN THE - [SDR CA151013007](https://openairdocs.org/sdr/CA151013007), Oct 13, 2015: ENGINE. FIRE. (CAN) IT HAS BEEN REPORTED THAT THE CREW WERE PRESENTED WITH A NR 2 ENGINE FIRE DURING LANDING. THE CREW STOPPED THE ACFT ON RUNWAY AND ACTIVATED THE ENGINE FIR - [SDR CA151029002](https://openairdocs.org/sdr/CA151029002), Oct 13, 2015: BEARING. FAILED. (CAN) DURING LANDING, A FIRE WARNING SOUNDED IN THE COCKPIT. THE PILOT DISCHARGED BOTH FIRE BOTTLES AND THE FIRE WARNING WENT OUT. GROUND INSPECTION REVEALED TH - [SDR CA151014008](https://openairdocs.org/sdr/CA151014008), Oct 10, 2015: CONTROL VALVE. UNSERVICEABLE. (CAN) SHORTLY AFTER DEPARTURE THE FLIGHT CREW NOTED AN ABNORMAL INCREASE IN THE NR 1 ENGINE OIL TEMPERATURE INTO THE YELLOW RANGE, APPROACHING THE RED LINE. THE - [SDR CA151216003](https://openairdocs.org/sdr/CA151216003), Oct 3, 2015: ENGINE. MALFUNCTIONED. (CAN) WHILE TURNING INTO FINAL, AN UNCOMMANDED IFSD OCCURRED ON THE NR 1 ENGINE. THE CREW REPORTED ONLY SEEING CAUTION LIGHTS ON THE ANNUNCIATOR PANEL AND A LOW - [SDR CA151215015](https://openairdocs.org/sdr/CA151215015), Sep 29, 2015: SEAL. LEAKING. (CAN) DURING A FERRY FLIGHT WHILE IN CRUISE, THE LOW OIL PRESSURE WARNING LIGHT FOR THE RT ENGINE CAME ON. AFTER FOLLOWING THE FLIGHT MANUAL PROCEDURES THE PILO - [SDR CA150928005](https://openairdocs.org/sdr/CA150928005), Sep 25, 2015: BEARING. DAMAGED. (CAN) BLADE RETAINING BALL BEARING FOUND DAMAGED DURING BLADE REMOVAL. PIECES OF THE BALL BEARING WERE FOUND INSIDE THE HUB AFTER FURTHER INVESTIGATION. THE 2 A - [SDR HYIA20150904001](https://openairdocs.org/sdr/HYIA20150904001), Aug 27, 2015: ECU. INOPERATIVE. AFTER GO AROUND, ECU 1 FAULTED. ECU 1 WAS TURNED OFF IAW QRH. ON BASE TO FINAL, LT TORQUE WENT TO 100% & LT NP WENT INTO CAUTION, NR 1 ECU. CLEANED CONNECTOR, P - [SDR CA150901007](https://openairdocs.org/sdr/CA150901007), Aug 25, 2015: ENGINE. POWER LOSS. (CAN) LOSS OF NR 2 ENGINE POWER OCCURRED DURING APPROACH AND THE TORQUE INDICATION SHOWS 3 %. THE AIRCRAFT PERFORMED AND UNEVENTFUL LANDING. IT WAS FOUND THAT A - [SDR CA150814001](https://openairdocs.org/sdr/CA150814001), Aug 14, 2015: COVER. BROKEN. (CAN) ENGINE WAS SENT TO O/H SHOP FOR A HOT SECTION INSPECTION. THE OPERATOR ALSO REPORTED THAT THE LP ROTOR WOULD NOT ROTATE. DISASSEMBLY OF THE HOT SECTION RE - [SDR CA150814009](https://openairdocs.org/sdr/CA150814009), Aug 13, 2015: ENGINE. POWER LOSS. (CAN) AIRCRAFT EXPERIENCED AN INFLIGHT POWER LOSS ON THE NR 2 ENGINE WHILE ON ROUTE, AND DIVERTED TO ALTERNATE. THE FLIGHT CREW HEARD AN ABNORMAL NOISE FROM THE - [SDR CA150818003](https://openairdocs.org/sdr/CA150818003), Aug 8, 2015: ENGINE. MALFUNCTIONED. (CAN) DURING CLIMB (ENGINE RPM SET TO1050), THE CREW EXPERIENCED HIGH TORQUE ON NR 2 ENGINE ABOVE FLIGHT LEVEL 180. NR 2 ENGINE WAS SHUTDOWN AND RETURNED TO LAN - [SDR CA150729006](https://openairdocs.org/sdr/CA150729006), Jul 27, 2015: CONNECTOR. SHORTED. (CAN) THE CAPTAIN REPORTS THAT ON THE APPROACH THERE WAS A STRONG SMELL (ELECTRICAL) APPEARED IN THE FLIGHT DECK AT THE SAME TIME THE FLIGHT ATTENDANT CALLED TO - [SDR CA150727010](https://openairdocs.org/sdr/CA150727010), Jul 17, 2015: BLADE. FRACTURED. (CAN) PILOT REPORTED VIBRATION IN FLIGHT WITH STRANGE RATTLING SOUND AND VIBRATION IN CONDITION LEVER ON NR 2 ENGINE. AFTER AND ADDITIONAL GROUND RUNS AND INVES - [SDR CA150715006](https://openairdocs.org/sdr/CA150715006), Jul 15, 2015: GEARBOX. DAMAGED. (CAN) ENGINE WAS SENT FOR HSI AND BORESCOPE INSPECTION OF UNACCESSED AREAS. BORESCOPE INSPECTION, CATEGORY 4 DAMAGE ON THE 1ST STAGE GEAR TRAIN AND CATEGORY 1, - [SDR CA150727008](https://openairdocs.org/sdr/CA150727008), Jul 13, 2015: ENGINE. OVERTEMP. (CAN) DURING CLIMB, PILOT NOTICED ITT ON THE NR 2 ENGINE REACHING 850 DEGREES. CREW ELECTED TO REDUCE POWER ON THE NR 2 ENGINE AND RETURN TO POINT OF ORIGIN. AC - [SDR CA150602013](https://openairdocs.org/sdr/CA150602013), May 14, 2015: BLADE. DISTRESSED. (CAN) PILOT INDUCED IFSD DUE TO LOW OIL PRESSURE & SUBSEQUENT FIRE ALARM. AN UNEVENTFUL LANDING WAS MADE. GROUND INSPECTION SHOWED PT BLADE DISTRESS. - [SDR CA150701006](https://openairdocs.org/sdr/CA150701006), May 10, 2015: HMU. MALFUNCTIONED. (CAN) COMMANDED ENG SHUTDOWN DUE TO NO ENG RESPONSE DURING TEST FLIGHT FOLLOWING 80K CHECKS. HMU WAS REPLACED & THE ACFT RETURNED TO SERVICE. MFG WILL INVESTIGA - [SDR CA150429002](https://openairdocs.org/sdr/CA150429002), Apr 27, 2015: HOLDER. OVERHEATED. (CAN) DURING FLIGHT, CREW SMELLED & SEEN SMOKE IN CABIN, ELECTRICAL. THEY NOTICE IT WAS COMING FROM THE LT CABIN LIGHTING. THEY PUT O2 MASK & FIRED A FIRE EXTIN - [SDR CA150701005](https://openairdocs.org/sdr/CA150701005), Apr 25, 2015: HMU. MALFUNCTIONED. (CAN) COMMANDED ENG SHUTDOWN DUE TO NO ENG RESPONSE DURING TEST FLIGHT FOLLOWING 80K CHECKS. HMU WAS REPLACED & THE ACFT RETURNED TO SERVICE. MFG WILL INVESTIGA - [SDR CA150427016](https://openairdocs.org/sdr/CA150427016), Apr 20, 2015: PUMP. CLOGGED. (CAN) FOLLOWING AN ENG REPLACEMENT ON THIS AIRFRAME, THE NEWLY INSTALLED ENG FLAMED OUT ON SEVERAL OCCASIONS DURING POST INSTALLATION MX GND RUN UP. THESE FLAME - [SDR 7C7A201504100021](https://openairdocs.org/sdr/7C7A201504100021), Apr 7, 2015: EEC. DEFECTIVE. NR 1 ENGINE SHUTDOWN. TORQUE FLUCTUATIONS +/- 20% WITH NR 1 ENGINE MANUAL CAUTION LIGHT GOING ON AND OFF. NR 1 ENGINE EEC REMOVED AND REPLACED, GROUND RUN OPS C - [SDR CA150302013](https://openairdocs.org/sdr/CA150302013), Mar 2, 2015: ACTUATOR. CRACKED. (CAN) THE LT OTBD ROLL SPOILER ACTUATOR VALVE BODY CRACKED AND CAUSED HYDRAULIC FLUID LOSS IN SYSTEM NR 2 IN FLIGHT. - [SDR CA150226001](https://openairdocs.org/sdr/CA150226001), Feb 26, 2015: BLADE. CRACKED. (CAN) DURING ROUTINE BORESCOPE THE OPERATOR NOTICED A CRACK ALONG THE TE OF AN LP BLADE. THE ENG WAS REMOVED & SENT FOR HSI & INVESTIGATION OF THE CRACKED BLADE - [SDR CA150224015](https://openairdocs.org/sdr/CA150224015), Feb 18, 2015: GEARBOX. FAILED. (CAN) THE CREW EXPERIENCED A LOW OIL PRESSURE IN FLIGHT ON THE NR 2 ENGINE. THE CREW SHUT THE ENGINE DOWN. THE ACFT LANDED UNEVENTFULLY. AFTER LANDING, THE TEAM - [SDR CA150224028](https://openairdocs.org/sdr/CA150224028), Feb 12, 2015: BULB. SHORTED. (CAN) SMALL AMOUNT OF SMOKE NOTED EMITTING FROM READING LIGHT IN SEATS 5A/B IN FLIGHT, AIRCRAFT RETURNED TO BASE AND BULB WAS REPLACED RECTIFYING THE DEFECT. SM - [SDR CA150212001](https://openairdocs.org/sdr/CA150212001), Feb 11, 2015: BLADE. FRACTURED. (CAN) A ROUGH NOISE WAS HEARD FROM ENGINE ON SHUT-DOWN. START-UP TO TAXI A WHINING NOISE WAS HEARD FROM THE ENGINE AND THE CONDITION LEVEL WAS VIBRATING. ENGINE - [SDR CA141202035](https://openairdocs.org/sdr/CA141202035), Nov 29, 2014: FITTING. CRACKED. (CAN) DURING RT MLG ACTURATOR REPLACEMENT IT WAS OBSERVED THAT THE BOTTOM 2 ATTACHMENT HOLES OF ACTURATOR FITTING WERE CRACKED. - [SDR CA141203004](https://openairdocs.org/sdr/CA141203004), Nov 29, 2014: STRUT. DAMAGED. (CAN) AIRCRAFT LANDING, DIFFICULTY TO CONTROL ON LANDING, DO TO WEIGHT ON WHEELS STAY ON AFTER LANDING. AFTER INSPECTION PILOT FOUND OUT THAT THE LT MLG SHOCK S - [SDR CA141128006](https://openairdocs.org/sdr/CA141128006), Nov 25, 2014: WIRE. BURNED. (CAN) CABIN READING LIGHTS LT BANK AND CABIN LATERIAL LIGHTS NOT WORKING - CAUSE 115VAC SERVICE BUS AND 28 VDC GROUND HANDLING BUS WIRES SHORTED TO GROUND AND E - [SDR CA141027006](https://openairdocs.org/sdr/CA141027006), Oct 17, 2014: ENGINE. UNKNOWN. (CAN) DURING CLIMB OPERATION, THE CREW REPORTED OIL ODOR IN THE CABIN. THE ENGINE CONTINUED WITHOUT REPORTED OPS ISSUE TO AIRPORT AND LANDED UNEVENTFULLY. VISUA - [SDR CA141014015](https://openairdocs.org/sdr/CA141014015), Oct 13, 2014: OIL SYSTEM. LEAKING. (CAN) CREWS EXPERIENCED FUMES IN THE CABIN, AN INTERNAL OIL LEAK WAS FOUND BETWEEN INLET CASING AND 1ST STAGE COMPRESSOR OF RT ENGINE. ENGINE SLATED FOR REMOVAL - [SDR CA141024011](https://openairdocs.org/sdr/CA141024011), Oct 4, 2014: WIRE. LOOSE. (CAN) ACFT MADE AN AIR TURNBACK DUE TO NR 2 ENGINE ITT FLUCTUATION BETWEEN 600 TO 700 DEGREES DURING CLIMB. GROUND INSPECTION FOUND A LOOSE NUT ON THE TERMINAL - [SDR CA140929002](https://openairdocs.org/sdr/CA140929002), Sep 26, 2014: WHEEL. DEPARTED. (CAN) AFTER LANDING, ON WALKAROUND CREW NOTICED LT O/B MAIN WHEEL MISSING. TAKEOFF AND LANDING WAS NORMAL. MAINTENANCE RECOVERED THE WHEEL AT THE TAKEOFF LOCATI - [SDR CA140925005](https://openairdocs.org/sdr/CA140925005), Sep 22, 2014: CONTROL UNIT. FAILED. (CAN) WHILE ENROUTE, THE FLIGHT CREW NOTICED AN ODOR LIKE PLASTIC MELTING. THE FLIGHT CREW AND F/A LOCATED THE SOURCE OF THE ODOR TO BE THE ATTENDANT PA CONTROL All 444: https://openairdocs.org/engine/pratt-whitney-canada-pw121/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 SE2805SO](https://openairdocs.org/stc/SE2805SO): Installation of an oil tank safety cap adapter which is intended to prevent loss of oil in the event of loss or damage to the oil filler cap. Jet Avion Corporation - [STC SE00023EN](https://openairdocs.org/stc/SE00023EN): Installation of Oil Tank Filler Neck Check Valve, Part Number TSA100Sa, Parts List Rev A dated 7/3/1997. Helicopter Support Inc Services Div - [STC SE01638NY](https://openairdocs.org/stc/SE01638NY): Installation of HP Turbine vanes with improved cooling. Atlantic Turbines International Inc - [STC SE00344LA](https://openairdocs.org/stc/SE00344LA): Installation of Western Filter Corp. oil filter element, P/N WF334638, as a replacement for the P&W Canada filter element, P/N 3112895-01, in the lubrication system. Western Filter Corporation - [STC SE792NE](https://openairdocs.org/stc/SE792NE): Installation of oil tank filler neck check valve P/N TSA-100 SA. Aviation Components Support - [STC SE00097LA](https://openairdocs.org/stc/SE00097LA): Installation of strainer element, P/N 90220, as a replacement for strainer element, P/N 3106403-01, in the oil pressure transfer tube assembly. Ejay Filtration, Inc - [STC SE01045AT](https://openairdocs.org/stc/SE01045AT): Installation of engine ignition lead. Unison Industries - [STC SE00074LA](https://openairdocs.org/stc/SE00074LA): Installation of Puroflow filter element, P/N 11-11064, as a replacement for P&W Canada filter element, P/N3029315 (and optional numbers) in the reduction gearbox scavenge oil filtering system. Puroflow Corporation - [STC SE00075LA](https://openairdocs.org/stc/SE00075LA): Installation of Puroflow filter element, P/N 11-11065, as a replacement for P&W Canada filter element, P/N3112895-01, in the reduction gearbox scavenge oil filtering system. Puroflow Corporation - [STC SE00076LA](https://openairdocs.org/stc/SE00076LA): Installation of Puroflow filter element, P/N 11-11084, as a replacement for P&W Canada filter element, P/N3035681 (and optional part numbers) in the engine fuel filtering system. Puroflow Corporation - [STC SE00079LA](https://openairdocs.org/stc/SE00079LA): Installation of Puroflow filter element, P/N 11-11085, as a replacement for P&W Canada filter element, P/N3035728 (and optional part numbers) in the engine fuel filtering system. Puroflow Corporation - [STC SE00082LA](https://openairdocs.org/stc/SE00082LA): Installation of Puroflow filter element, P/N 11-11102, as a replacement for P&W Canada filter element, P/N3038454, in the engine fuel filtering system. Puroflow Corporation - [STC SE00083LA](https://openairdocs.org/stc/SE00083LA): Installation of Puroflow filter element, P/N 70-106, as a replacement for P&W Canada filter element, P/N3034190, in the reduction gearbox scavenge oil filtering system. Puroflow Corporation ## PMA parts (OpenAirDocs) (345, 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. - [3032255CL2CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191902940220260217155849.0001): Weight Balance Compressor. Core Parts LLC · PMA PQ05326NM · Replaces 3032255CL2 · Jan 6, 2026 - [3024146CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182686186420260217160347.0001): Washer Key. Core Parts LLC · PMA PQ05326NM · Replaces 3024146 · Jan 6, 2026 - [3032255CL4CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181545932020260217155850.0001): Weight Balance Compressor. Core Parts LLC · PMA PQ05326NM · Replaces 3032255CL4 · Jan 6, 2026 - [3032255CL5CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168234696220260217155850.0001): Weight Balance Compressor. Core Parts LLC · PMA PQ05326NM · Replaces 3032255CL5 · Jan 6, 2026 - [3032255CL3CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152118224920260217155849.0001): Weight Balance Compressor. Core Parts LLC · PMA PQ05326NM · Replaces 3032255CL3 · Jan 6, 2026 - [ST3086-013CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID139847229320260217160512.0001): Packing Preformed. Core Parts LLC · PMA PQ05326NM · Replaces ST3086-013 · Jan 6, 2026 - [3032255CL1CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID137001436220260217155848.0001): Weight Balance Compressor. Core Parts LLC · PMA PQ05326NM · Replaces 3032255CL1 · Jan 6, 2026 - [3015234CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID190658425320260217153955.0001): Nut Self-Locking Shank. Core Parts LLC · PMA PQ05326NM · Replaces 3015234 · Jan 5, 2026 - [3031098CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID126672255320260217153252.0001): Rivet Tubular Countersunk. Core Parts LLC · PMA PQ05326NM · Replaces 3031098 · Jan 5, 2026 - [3010880CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117245394120260217153009.0001): Gasket Igniter. Core Parts LLC · PMA PQ05326NM · Replaces 3010880 · Jan 5, 2026 - [3003987CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID110231097220260217153647.0001): Pin Lock. Core Parts LLC · PMA PQ05326NM · Replaces 3003987 · Jan 5, 2026 - [3018344CP](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103008963120260217153140.0001): Rivet Tubular Countersunk. Core Parts LLC · PMA PQ05326NM · Replaces 3018344 · Jan 5, 2026 - [WF329398](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID173837820120250624152917.0001): Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3035681, 5905587, Alternate… · Jun 2, 2025 - [WF429940](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168842044420250624152911.0001): Switch, Differential Pressure Indicator. Donaldson Company Inc · PMA PQ2432CE · Replaces 5905588, 3035683 · Jun 2, 2025 - [3034508WFC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168792409620250624152910.0001): Oil Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3034508 3036376, Alternate: 11-11064… · Jun 2, 2025 - [WF334638](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID197682983220250602133018.0001): Cleanable Oil Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3112895-01, 3059255-01, 3059254-01… · May 23, 2025 - [WF331451](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID192483939520250602133018.0001): Non-Cleanable Oil Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3034190, Alternate: 3059253-01… · May 23, 2025 - [WF334591](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID121150890220250602133018.0001): Filter Element. Donaldson Company Inc · PMA PQ2432CE · Replaces 3038454, Alternate: 11-11102… · May 23, 2025 - [3014422AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157889633320250310190842.0001): Packing with Retainer. Aero Attitude, LLC · PMA PQ00001CB · Replaces PWC 3014422 · Feb 25, 2025 - [3015234AA](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID130436253520240919140838.0001): Nut, Self-Locking, Shank. Aero Attitude, LLC · PMA PQ00001CB · Replaces 3015234, 3015233, 3015232, 3016299… · Aug 7, 2024 - [7590526AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID184790841820240129140716.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3059777-01 · Dec 11, 2023 - [7587923AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178335771520240129140707.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3059255-01 · Dec 11, 2023 - [7587923AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID176073949320240129140706.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3059252-01 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID173270088920240129140709.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3020291 · Dec 11, 2023 - [7590526AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171676279420240129140714.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3038454 · Dec 11, 2023 - [7587923AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168806079720240129140707.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3112895-01 · Dec 11, 2023 - [7590526AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168658722420240129140716.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 725825 · Dec 11, 2023 - [7587923AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID167757756320240129140706.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3059253-01 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID165226990020240129140710.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3015330 · Dec 11, 2023 - [7590526AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID161839470920240129140715.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3035729 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID159127581320240129140711.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3034742 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID155717735120240129140711.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3034743 · Dec 11, 2023 - [7590526AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID154138367520240129140715.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3035728 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID153308215920240129140710.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3014635 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152901791720240129140712.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3059256-01 · Dec 11, 2023 - [7587923AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146767814120240129140705.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3034190 · Dec 11, 2023 - [7590526AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID145978549120240129140715.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3059775-01 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID145669272020240129140709.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3036376 · Dec 11, 2023 - [7590526AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID145509498920240129140717.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 7590048AM · Dec 11, 2023 - [7590526AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID139656555320240129140715.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3059776-01 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135679117420240129140714.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3111843-01 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID130080262720240129140709.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3034508 · Dec 11, 2023 - [7587923AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID128560613620240129140707.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3059254-01 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID128292367220240129140713.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3059414-01 · Dec 11, 2023 - [7590526AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID123642627020240129140715.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3035317 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117230667420240129140713.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3073301-01 · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID116433161920240129140708.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3029316 · Dec 11, 2023 - [7590526AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113632618020240129140716.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 7587615AM · Dec 11, 2023 - [7587923AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113611469520240129140707.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 7590047-101AM · Dec 11, 2023 - [7578659AM](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID105468072420240129140712.0001): Filter Element. PTI Technologies Inc · PMA PQ1341NM · Replaces 3054626-01 · Dec 11, 2023 All of them: https://openairdocs.org/engine/pratt-whitney-canada-pw121/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.