# Lycoming IO-540-S1A5

- Type: Engine model (FAA registry)
- Registry code: 41788
- Manufacturer (registry): LYCOMING
- Model: IO-540-S1A5
- Engine type: Reciprocating
- Power: 300 hp
- Data sheet: [TCDS 1E4](https://openairdocs.org/tcds/1E4) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 10 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-io-540-s1a5

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 2026-17-10](https://openairdocs.org/ad/2026-17-10): Reciprocating Engine Cylinder Section · Lycoming Engines O-235, O-235-A, O-235-AP and 159 more. Effective Sep 14, 2026
- [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026
- [AD 2023-09-09](https://openairdocs.org/ad/2023-09-09): Exhaust Turbine System (Recip) · Aerostar PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P) and 292 more. Effective Jul 17, 2023
- [AD 2022-16-03](https://openairdocs.org/ad/2022-16-03): Engine (RECIPROCATING) · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 236 more. Effective Aug 15, 2022
- [AD 2017-16-11](https://openairdocs.org/ad/2017-16-11): Reciprocating Engine Power Section · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-360-B1G6 and 93 more. Effective Aug 15, 2017
- [AD 2015-19-07](https://openairdocs.org/ad/2015-19-07): Fuel injector fuel lines · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 187 more. Effective Nov 3, 2015
- [AD 2012-19-01](https://openairdocs.org/ad/2012-19-01): Crankshafts · Lycoming Engines AEIO-360-A1A, AEIO-360-A1B, AEIO-360-A1B6 and 321 more. Effective Oct 24, 2012
- [AD 2012-03-06](https://openairdocs.org/ad/2012-03-06): Fuel servo diaphragm · Continental Motors 6-260-A, 6-285-A, 6-285-B and 482 more. Effective Feb 24, 2012
- [AD 2009-02-03](https://openairdocs.org/ad/2009-02-03): Fuel injection servos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 261 more. Effective Feb 9, 2009
- [AD 2005-19-11](https://openairdocs.org/ad/2005-19-11): Crankshafts · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 59 more. Effective Oct 21, 2005
- [AD 2005-12-06](https://openairdocs.org/ad/2005-12-06): Riveted-impulse coupling assemblies and snap-ring coupling assemblies · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 154 more. Effective Jul 19, 2005
- [AD 2004-10-14](https://openairdocs.org/ad/2004-10-14): Crankshaft gear · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 642 more. Effective Jun 25, 2004
- [AD 2004-05-24](https://openairdocs.org/ad/2004-05-24): Zinc-plated Crankshaft Gear Retaining Bolts · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 161 more. Effective Mar 30, 2004
- [AD 2003-14-03](https://openairdocs.org/ad/2003-14-03): Rotary fuel pumps · Lycoming Engines AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 262 more. Effective Aug 14, 2003
- [AD 2002-19-03](https://openairdocs.org/ad/2002-19-03): Crankshaft · Lycoming Engines IO-540-A1A5, IO-540-AA1A5, IO-540-AA1B5 and 81 more. Effective Sep 20, 2002
- [AD 98-17-11](https://openairdocs.org/ad/98-17-11): Crankshafts · Continental Motors A-65-3, A-65-8, A75-8 and 90 more. Effective Oct 19, 1998
- [AD 97-15-11](https://openairdocs.org/ad/97-15-11): Cylinder kits · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 538 more. Effective Aug 12, 1997
- [AD 96-23-03](https://openairdocs.org/ad/96-23-03): High pressure fuel pumps · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 174 more. Effective Dec 23, 1996
- [AD 95-07-01](https://openairdocs.org/ad/95-07-01): Connecting Rod Bolt · Lycoming Engines AEIO-360-A1E, AEIO-360-B1G6, AEIO-360-H1A and 177 more. Effective Apr 12, 1995
- [AD 92-12-05](https://openairdocs.org/ad/92-12-05): Piston Pins · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 532 more. Effective Jul 10, 1992
- [AD 83-22-04](https://openairdocs.org/ad/83-22-04): Injector Fuel Diaphragm Stem · Lycoming Engines AEIO-540-L1B5D, IO-540-AA1A5, IO-540-G1B5 and 30 more. Effective Nov 4, 1983
- [AD 79-04-05](https://openairdocs.org/ad/79-04-05): Regulator Diaphragm Stem Assembly · Lycoming Engines AEIO-320-D1B, AEIO-320-E1A, AEIO-320-E1B and 215 more. Effective Sep 26, 1979
- [AD 78-23-10](https://openairdocs.org/ad/78-23-10): Center Body Bellows Seal Assembly · Lycoming Engines AEIO-320-D1B, AEIO-320-E1A, AEIO-320-E1B and 218 more. Effective Nov 7, 1978
- [AD 78-23-08](https://openairdocs.org/ad/78-23-08): Fuel Pump To Fuel Injector Tube Elbow · Lycoming Engines IO-540-G1B5, IO-540-K1F5, IO-540-P1A5 and 1 more. Effective Nov 7, 1978
- [AD 75-09-15](https://openairdocs.org/ad/75-09-15): Fuel Starvation To The Engine · Lycoming Engines AIO-320-A1A, AIO-320-A1B, AIO-320-A2A and 130 more. Effective Apr 30, 1975

Historical (superseded or no longer in force):

- [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 548 more. Effective Dec 5, 2024
- [AD 2011-26-04](https://openairdocs.org/ad/2011-26-04) (historical): Externally mounted fuel injector fuel lines · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 186 more. Effective Jan 25, 2012
- [AD 2011-15-10](https://openairdocs.org/ad/2011-15-10) (historical): Fuel servos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 256 more. Effective Aug 16, 2011
- [AD 2008-14-07](https://openairdocs.org/ad/2008-14-07) (historical): Externally mounted fuel injector fuel lines · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1B and 185 more. Effective Aug 14, 2008
- [AD 2008-08-14](https://openairdocs.org/ad/2008-08-14) (historical): Fuel injection servo plugs · Superior Air Parts AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 242 more. Effective Apr 29, 2008
- [AD 2008-06-51](https://openairdocs.org/ad/2008-06-51) (historical): Fuel injection servo plugs · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 235 more
- [AD 2006-20-09](https://openairdocs.org/ad/2006-20-09) (historical): Certain crankshafts replacing · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 82 more. Effective Nov 3, 2006
- [AD 2005-26-10](https://openairdocs.org/ad/2005-26-10) (historical): ECi cylinder assemblies. · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 413 more. Effective Jan 31, 2006
- [AD 2002-26-01](https://openairdocs.org/ad/2002-26-01) (historical): Fuel injector fuel lines · Textron Lycoming, AVCO IGO-480-A1B6, IGO-540-B1A, IGO-540-B1C and 178 more. Effective Jan 31, 2003
- [AD 98-18-12](https://openairdocs.org/ad/98-18-12) (historical): Fuel Pump · Textron Lycoming, AVCO AEIO-540-D4A5, AEIO-540-D4B5, AEIO-540-D4C5 and 249 more. Effective Sep 28, 1998

## Information bulletins (advisory) (7)

- [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019
- [SAIB NE-08-32R1](https://openairdocs.org/saib/NE-08-32R1): Propeller Governor  Idler Gear Shaft Set Screw. Issued May 13, 2016
- [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014
- [SAIB NE-13-06](https://openairdocs.org/saib/NE-13-06): Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320, 360, and 540 Series Engines. Issued Nov 21, 2012
- [SAIB NE-09-04](https://openairdocs.org/saib/NE-09-04): Fuel Control/Reciprocating Engines. Issued Jan 10, 2009
- [SAIB NE-06-32R1](https://openairdocs.org/saib/NE-06-32R1): Reciprocating Engine - Crankshaft. Issued Sep 10, 2008
- [SAIB NE-08-32](https://openairdocs.org/saib/NE-08-32) (historical): Propeller Governor Set Screw. Issued Jul 3, 2008

## Registered aircraft (10)

- [N232MF](https://openairdocs.org/aircraft/N232MF): [Rocky Mountain Sport Jets LLC](https://openairdocs.org/faa-owner/ROCKY%20MOUNTAIN%20SPORT%20JETS%20LLC), [Desert Hills, AZ](https://openairdocs.org/faa-place/AZ/Desert%20Hills), S/N 61P06907963327
- [N283AC](https://openairdocs.org/aircraft/N283AC): [Medical Transport Inc](https://openairdocs.org/faa-owner/MEDICAL%20TRANSPORT%20INC), [Dover, DE](https://openairdocs.org/faa-place/DE/Dover), S/N 61P06327963289
- [N330DS](https://openairdocs.org/aircraft/N330DS): [Lively Charters Inc](https://openairdocs.org/faa-owner/LIVELY%20CHARTERS%20INC), [Summerland Key, FL](https://openairdocs.org/faa-place/FL/Summerland%20Key), built 2011, S/N 3097
- [N398MA](https://openairdocs.org/aircraft/N398MA): [Mullens Aviation LLC](https://openairdocs.org/faa-owner/MULLENS%20AVIATION%20LLC), [Estero, FL](https://openairdocs.org/faa-place/FL/Estero), built 1978, S/N 61P-0529-223
- [N540S](https://openairdocs.org/aircraft/N540S): [Code Supplies Inc](https://openairdocs.org/faa-owner/CODE%20SUPPLIES%20INC), [Rossville, TN](https://openairdocs.org/faa-place/TN/Rossville), built 1979, S/N 009
- [N567LT](https://openairdocs.org/aircraft/N567LT): [Air Flight Enterprises Inc](https://openairdocs.org/faa-owner/AIR%20FLIGHT%20ENTERPRISES%20INC), [New Smyrna Beach, FL](https://openairdocs.org/faa-place/FL/New%20Smyrna%20Beach), built 1970, S/N 61-0053-102
- [N601B](https://openairdocs.org/aircraft/N601B): [Kornegay Clyde Cullen](https://openairdocs.org/faa-owner/KORNEGAY%20CLYDE%20CULLEN), [Harlingen, TX](https://openairdocs.org/faa-place/TX/Harlingen), built 1979, S/N 6106057962136
- [N605PS](https://openairdocs.org/aircraft/N605PS): [Yesmar LLC](https://openairdocs.org/faa-owner/YESMAR%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2025, S/N 34M5-66M5/67M5
- [N989KC](https://openairdocs.org/aircraft/N989KC): [Niner Kilo Charlie LLC](https://openairdocs.org/faa-owner/NINER%20KILO%20CHARLIE%20LLC), [Tulsa, OK](https://openairdocs.org/faa-place/OK/Tulsa), S/N 61P0287067
- [N995BH](https://openairdocs.org/aircraft/N995BH): [Kim Sung](https://openairdocs.org/faa-owner/KIM%20SUNG), [Upland, CA](https://openairdocs.org/faa-place/CA/Upland), built 2026, S/N SK001

## NTSB investigations (3)

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 CEN18LA285](https://openairdocs.org/ntsb/CEN18LA285), Jul 20, 2018: Smith AEROSTAR601 (N327BK), Baton Rouge, LA, substantial damage. Probable cause: The loss of right engine power due to fuel starvation, which resulted from corrosion debris in the fuel lines. Contributing to the accident was the mechanic’s and pilot’s inadequate maintenance of…
- [NTSB CEN15FA141](https://openairdocs.org/ntsb/CEN15FA141), Feb 11, 2015: Richard Lacourse Wheeler Express (N564ER), Kersey, CO, destroyed, 2 fatal. Probable cause: The pilot's failure to maintain airplane control during an off-airport forced landing following a total loss of engine power for reasons that could not be determined during postaccident examination…
- [NTSB CEN09CA520](https://openairdocs.org/ntsb/CEN09CA520), Aug 13, 2009: Grahn J/Grahn G Pitts S2S (N540S), Rifle, CO, substantial damage. Probable cause: The pilot's excessive landing speed and subsequent excessive brake application which resulted in a loss of control and impact with an airport sign.

## FAA accident and incident reports (6)

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

- [Accident 20180720017439A](https://openairdocs.org/incident/20180720017439A), Jul 20, 2018: Smith AEROSTAR 601 (N327BK), Baton Rouge, LA, Substantial damage. On Friday, July 20, 2018, N327BK, an Aerostar 601, sn 61-0145-076, was making a test run shortly after maintenance was done to the aircraft. The plane departed…
- [Incident 20171030020499I](https://openairdocs.org/incident/20171030020499I), Oct 30, 2017: Steele Dennis A GLASAIR III (N330DS), West Chicago, IL, Minor damage. Aircraft N330DS, departed kgyy for kdpa at about 14:00. During take off roll. The pilot thought he hit something on the runway with the nose wheel. Pilot…
- [Accident 20150211002009A](https://openairdocs.org/incident/20150211002009A), Feb 11, 2015: Richard Lacourse WHEELER EXPRESS (N564ER), Kersey, CO, Destroyed, 2 fatal. On February 11, 2015 at about 14:35 mountain standard time an experimental Wheeler Express impacted terrain near Kersey, Colorado. The pilot and pilot rated…
- [Incident 20110524012249I](https://openairdocs.org/incident/20110524012249I), May 24, 2011: Smith AEROSTAR 601 (N567LT), Emporia, VA, Minor damage. Pilot departed for vacation with two passengers. The aircraft was loaded with baggage and packages. On takeoff roll, the aircraft rotated but did not gain…
- [Incident 20100815043119I](https://openairdocs.org/incident/20100815043119I), Aug 15, 2010: Piper AEROSTAR 60 (N283AC), Fort Lauderdale, FL, No damage. Ferry flight from orl to fxe (permit ok) apparently at landing roll nose gear did not straighten causing the aircraft werving out of the rwy tarmac into the…
- [Accident 20090813014439A](https://openairdocs.org/incident/20090813014439A), Aug 13, 2009: Grahnj PITTSS2S (N540S), Rifle, CO, Substantial damage. (-23) Aircraft was landing after practive performance of airshow (practice part of airshow waiver) the next day. Aircraft landed fast, pilot used heavy braking…

## Service difficulty reports (31)

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

- [SDR HX1R2016041230269](https://openairdocs.org/sdr/HX1R2016041230269), Mar 10, 2016: STUD. BROKEN. DURING INSPECTION, SAW NR 3 CYLINDER WITH ALL OF THE HOLDDOWN STUDS BROKEN OFF. THE CYLINDER MOVED IN AND OUT AND BROKE CONNECTION ROD, PUSH ROD TUBES, FUEL INJ
- [SDR 2015FA0000173](https://openairdocs.org/sdr/2015FA0000173), Apr 27, 2015: ENGINE. FAILED. PILOT REPORTED THAT IN FLIGHT, ENGINE MADE SOME NOISES FOLLOWED BY LOSS OF ENGINE POWER, LT ENGINE. PROP WENT TO UN-COMMANDED FEATHER WITH A SUDDEN INCREASE IN 
- [SDR TZRA200600001](https://openairdocs.org/sdr/TZRA200600001), Mar 10, 2006: ROCKER COVER. BROKEN. LT ENG BEGAN TO RUN ROUGH & LEAK OIL ONTO COWLING INBD SIDE. ENG CONTINUED TO MAKE PWR & OIL PRESS REMAINED NORM, DEACTIVATED TURBOS AS PRECAUTION. EXAM REVEALE
- [SDR AUS20040174](https://openairdocs.org/sdr/AUS20040174), Mar 9, 2004: BELLCRANK. BROKEN. (AUS) RT MAIN LANDING GEAR DOOR BELLCRANK LUG BROKEN.
- [SDR TZR2004F00003](https://openairdocs.org/sdr/TZR2004F00003), Dec 10, 2003: CRANKCASE. CRACKED. PILOT REPORTED A HARD DOWNDRAFT (REPORTED THAT HE HIT HIS HEAD ON CEILING) APPROX 20 SECONDS LATER NR 2 ENGINE LOST POWER AND HE SHUT THE ENGINE DOWN. HE LANDED
- [SDR 2003FA0000823](https://openairdocs.org/sdr/2003FA0000823), Jul 29, 2003: STRUT. BROKEN. TORQUE LINK ATTACH POINT ON THE RIGHT STRUT BROKE AT LANDING. THIS ALLOWED THE RIGHT MLG TIRE TO ROTATE AND PULL THE AIRCRAFT OFF THE RUNWAY. THE RESULTING SIDE
- [SDR TZR2004F00001](https://openairdocs.org/sdr/TZR2004F00001), Jul 29, 2003: TORQUE LINK. BROKEN. TORQUE LINK ATTACH POINT ON THE RT STRUT BROKE AT LANDING. THIS ALLOWED THE RT MLG TIRE TO ROTATE AND PULL THE AIRCRAFT OFF THE RUNWAY. THE RESULTING SIDE LOAD 
- [SDR GH62003F00000](https://openairdocs.org/sdr/GH62003F00000), May 2, 2003: WINDOW. FAILED. WHILE CLIMBING OUT AFTER TAKEOFF, AT APPROX 20,000 FT, CO-PILOT WINDOW EXPERIENCED A CATASTROPHIC FAILURE. WINDOW SHARDS CONTACTED RT PROPELLER. PARTIALLY RIPPI
- [SDR AUS20020664](https://openairdocs.org/sdr/AUS20020664), Jul 1, 2002: DOWNLOCK SWITCH. CONTAMINATED. (AUS) NOSE LANDING GEAR DOWNLOCK MICROSWITCH CONTACTS DIRTY.
- [SDR CA020228016](https://openairdocs.org/sdr/CA020228016), Feb 2, 2002: HOSE. RUPTURED. (CAN) TURBO OIL SUPPLY HOSE FROM OPTIONAL FILTER P/N 300180-501 TO WAISTGATE ACTUATOR ROUTED IN CLOSE PROXIMITY TO EXHAUST PIPES WITH SHARP BENDS DUE TO EXTREMI
- [SDR 2002FA0000204](https://openairdocs.org/sdr/2002FA0000204), Jan 16, 2002: CRANKCASE. CRACKED. CRANKCASE FAILED NEAR NR 2 CYLINDER, CRACKED FROM IN FRONT OF CYLINDER RADIALLY BELOW AND AROUND TO THE REAR OF THE CYLINDER. CRACK EXTENDS MORE THAN 180 DEGREE
- [SDR MHJ2001F00001](https://openairdocs.org/sdr/MHJ2001F00001), Nov 1, 2001: MAIN BEARING. DELAMINATED. FOUND NONFERROUS METAL IN SUCTION OIL SCREEN, CUT OPEN OIL FILTER AND FOUND NONFERROUS METAL IN OIL FILTER, DISASSEMBLED ENGINE, FOUND NR 2 AND NR 4 MAIN BEARIN
- [SDR AUS20011043](https://openairdocs.org/sdr/AUS20011043), Jul 5, 2001: TAILPIPE. CRACKED. (AUS) RH ENGINE TAILPIPE CRACKED ALLOWING HOT EXHAUST GAS TO ACTIVATE FIRE WARNING SYSTEM.
- [SDR CA010219004](https://openairdocs.org/sdr/CA010219004), Dec 22, 2000: SPARK PLUG. SEPARATED. (CAN) THIS ENGINE HAD APPROXIMATELY 16 MINUTES AFTER ENGINE OVERHAUL. THIS WAS ON NR 2 ENGINE THAT THE SPARK PLUG SEPARATED. WE THEN REMOVED ALL SPARK PLUGS IN 
- [SDR AU000679](https://openairdocs.org/sdr/AU000679), Sep 1, 2000: BRACE. CRACKED. (AUS) LEFT MAIN LANDING GEAR LOWER SIDE BRACE CRACKED. FOUND DURING INSPECTION IAW TSA-SB600-134A. (X)
- [SDR 99ZZZX3309](https://openairdocs.org/sdr/99ZZZX3309), Aug 2, 1999: CAM FOLLOWER. LOOSE. PILOT REPORTED DEAD MAGNETO ON SECOND LEG OF TRIP. MAGNETO REMOVED AND BREAKER COMPARTMENT INSPECTED REVEALING THE CAM FOLLOWER ON THE CONTACT POINTS WAS NO LON
- [SDR AU990707](https://openairdocs.org/sdr/AU990707), Jun 17, 1999: COLLAR. CRACKED. (AUS) NOSE LANDING GEAR STEERING COLLAR FAILED AT THE STEERING ACTUATING MECHANISM ATTACHMENT LUG. INVESTIGATION FOUND THAT THE CRACK HAD EXISTED FOR SOME TIME 
- [SDR AU980916](https://openairdocs.org/sdr/AU980916), Jul 28, 1998: PUSHROD. LOOSE. (AUS) AILERON CONTROL SYSTEM PUSHROD LOWER END FITTING RIVETS LOOSE.
- [SDR CA981013013](https://openairdocs.org/sdr/CA981013013), Jul 28, 1998: BRACE. CRACKED. (CAN) ON LANDING ROLL-OUT AT ABOUT 40 KNOTS, THE WARNING HORN SOUNDED AND THE LEFT WING STARTED TO DROP. LEFT ENGINE SHUTDOWN, A/C STAYED ON RUNWAY. LEFT GEAR C
- [SDR 98ZZZX1716](https://openairdocs.org/sdr/98ZZZX1716), Apr 1, 1998: PUMP. LOOSE. UPON VISUAL INSPECTION OF NEWLY OVERHAULED ENGINE, FOUND ALL OF THE BOLTS SECURING THE BOTTOM DIAPHRAGM PLATE TO THE FUEL PUMP BODY WERE LOOSE, AT LEAST .0312 I
- [SDR 98ZZZX773](https://openairdocs.org/sdr/98ZZZX773), Jan 24, 1998: CRANKSHAFT. FAILED. PILOT (OWNER) DEPARTING FROM AIRPORT AND CLIMBING THROUGH 4,000 FEET NOTED LOUD BANG AND SEVERE VIBRATION FROM LT ENGINE. ENGINE SHUT DOWN AND SECURED AND SAFE 
- [SDR 98ZZZX909](https://openairdocs.org/sdr/98ZZZX909), Jan 24, 1998: CRANKSHAFT. FAILED. PILOT (OWNER) DEPARTING FROM AIRPORT AND CLIMBING THROUGH 4,000 FEET NOTED LOUD BANG AND SEVERE VIBRATION FROM LT ENGINE. ENGINE SHUT DOWN AND SECURED AND SAFE 
- [SDR GXPA97011](https://openairdocs.org/sdr/GXPA97011), May 8, 1997: MAGNETO. SEIZED. ACFT'S RT ENG FAILED IN-FLIGHT. ACFT LANDED AT FDY. NLG COLLA PSED ON LANDING.INSP AND TEAR DOWN OF ENG NOTED THAT RT MAG WAS S EIZED. CRANKSHAFT DRIVE GEAR HAD
- [SDR 96ZZZX6020](https://openairdocs.org/sdr/96ZZZX6020), Nov 20, 1996: PISTON. HOLE IN SIDE. DURING TEST FLIGHT, A LARGE STREAM OF OIL, FROM OIL DOOR OF RIGHT ENGINE WAS NOTICED. SUBSEQUENTLY, ENGINE SHUT DOWN WAS PERFORMED AND AN UNEVENTFUL LANDING WAS
- [SDR 96ZZZX6155](https://openairdocs.org/sdr/96ZZZX6155), Nov 20, 1996: INJECTOR SERVO. FAILED. INJECTOR SERVO 'SHUT DOWN' DURING ACTUAL FUEL FLOW TEST', ALLOWING ONLY A DRIBBLE OF FUEL THROUGH WITH FULL THROTTLE AND FULL MIXTURE AND FUEL PUMP ON. HAD THIS
- [SDR AU961150](https://openairdocs.org/sdr/AU961150), Jul 30, 1996: PROPELLER. GROUND STRIKE. (AUS) RH ENGINE SUFFERED A PROPELLER STRIKE - ALL THREE BLADES DAMAGED IN AREA APPROXIMATELY 50.8MM (2IN) FROM TIP
- [SDR AU960740](https://openairdocs.org/sdr/AU960740), May 17, 1996: DUCT. CRACKED. (AUS) CABIN HEATER DUCTING CRACKED - HOT AIR CAUSED FREIGHT TO SMOULDER
- [SDR 95ZZZX3643](https://openairdocs.org/sdr/95ZZZX3643), Jul 11, 1995: HOSE. LOOSE. AN OIL RETURN HOSE FROM THE TURBOS CAME LOOSE SPRAYING OIL ONTO THE FIRE DETECTION PROBES. THIS CAUSED THE FIRE WARNING TO ACTIVATE, AND THE PILOT WENT INTO THE
- [SDR 95ZZZX2618](https://openairdocs.org/sdr/95ZZZX2618), May 15, 1995: CRANKCASE. CRACKED. FOUND ENGINE CASE CRACKED FROM NR 2 CYLINDER RETAINING STUD HOLE (LOWER, FORWARD LARGE BOLT).
- [SDR 95ZZZX1799](https://openairdocs.org/sdr/95ZZZX1799), Mar 25, 1995: CYLINDER. BASE NUT FAILED. ON TAKEOFF, RT ENGINE FIRE LIGHT, LOSS OF POWER. PILOT SHUT DOWN, RETURNED TO AIRPORT. FOUND NR 4 CYLINDER HELD ON BY ONE BASE NUT. EXAMINED CYLINDER/PISTON, FO
- [SDR 95ZZZX1274](https://openairdocs.org/sdr/95ZZZX1274), Feb 8, 1995: ENGINE. FAILED. LEFT ENGINE SHUT DOWN IN-FLIGHT, ACFT LANDED. REMOVED AND REPLACED ENGINE, CAUSE FOR FAILURE UNKNOWN AT THIS TIME.

## STCs that may be installed (OpenAirDocs) (47)

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 SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. B & C Specialty Products Inc
- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd
- [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company
- [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc
- [STC SE00939WI](https://openairdocs.org/stc/SE00939WI): Installation of B&C Specialty Products Model BC 315-( ) Starter on Lycoming engines. B & C Specialty Products Inc
- [STC SE2387CE](https://openairdocs.org/stc/SE2387CE): Installation of B & C Speciality Products lightweight (10.2 pounds) engine starter P/N BC 315-100-1(12 volt) or P/N BC 315-100-3(24 volt). B & C Specialty Products Inc. Lists IO-540 Series
- [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc
- [STC SE60WE](https://openairdocs.org/stc/SE60WE): Installation of two Rajay Turbochargers P/N RJ 0327-1 or -2 and 9 lb. Sonic nozzle. TALCO Aviation
- [STC SE6WE](https://openairdocs.org/stc/SE6WE): Installation of two Roto-Master Turbochargers Model No. 3DT5FF10J2, P/N 600572-00 (formerly Rajay Model 315F10, P/N RJ0080-100, or 102). TALCO Aviation
- [STC SE01436LA](https://openairdocs.org/stc/SE01436LA): Installation of Firewall Forward Technologies LLC modified camshaft. Centri-lube Technologies LLC
- [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp
- [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc
- [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp
- [STC SE09445SC](https://openairdocs.org/stc/SE09445SC): Installation of fuel injector nozzles. General Aviation Modifications Inc. Lists IO-540 Series
- [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc. Lists IO-540 Series
- [STC SE7509SW](https://openairdocs.org/stc/SE7509SW): Installation of any or all parts listed on Airmotive Engineering Drawing List No. 852-1, Rev. 1, dated 10/4/88, or later FAA approved revision. Continental Motors, Inc. Lists IO-540 Series
- [STC SE7667SW](https://openairdocs.org/stc/SE7667SW): Installation of parts listed on Drawing List No. 8810-3, Rev 6. Continental Motors, Inc. Lists IO-540 Series
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists IO-540 Series
- [STC SE00218NY](https://openairdocs.org/stc/SE00218NY): Replacement of Lycoming starter with SKY-TEC 12 volt starter installed. Hartzell Engine Technologies, LLC. Lists IO-540 Series
- [STC SE00226NY](https://openairdocs.org/stc/SE00226NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter Models 149-24HT and 122-24HT. Approval limited to 24-volt DC source available to the starter. Hartzell Engine Technologies, LLC
- [STC SE00357NY](https://openairdocs.org/stc/SE00357NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter installed. Hartzell Engine Technologies, LLC. Lists IO-540 Series
- [STC SE2901NM](https://openairdocs.org/stc/SE2901NM): Lycoming valve cover gasket. Real Gaskets Tennessee
- [STC SE2902NM](https://openairdocs.org/stc/SE2902NM): Lycoming valve cover gasket. Real Gaskets Tennessee
- [STC SE7582SW](https://openairdocs.org/stc/SE7582SW): Grinding of high compression NITRIDED Cylinders to .010 oversize, as an alternative to chrome plating or rebarreling, and the installation of SL10207 P10 Piston, SL74241 P10 Top and second compression ring, and SL 73857 P10 oil control ring. Superior Air Parts, Inc
- [STC SE00768CH](https://openairdocs.org/stc/SE00768CH): Replace Slick 6000, 6100, 6200 and 6300 series magnetos and TCM/Bendix S6-20, S6-200 and S6-1200 series magnetos with the Champion Limited Authority Spark Advance Regulator (LASARTM) ignition system. Champion Aerospace LLC. Lists IO-540 Series
- [STC SE01524CH](https://openairdocs.org/stc/SE01524CH): Replace Slick 6000, 6100, 6200, 6300, 4000, 4100, 4200, and 4300 series magnetos and TCM/Bendix S6-20, S6-200, S6-1200, S-20, S-200, and S-1200 series magnetos with Champion Limited Authority Spark Advance Regulator (LASAR ) Model 4755 and 6755 bush kit ignition systems. Champion Aerospace LLC
- [STC SE01930NY](https://openairdocs.org/stc/SE01930NY): Installation of Casper Labs 90 degree oil filter housing adapter. Casper Labs Inc
- [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc
- [STC SE22WE](https://openairdocs.org/stc/SE22WE): Installation of AiResearch Turbosupercharger 406610-3. Approved for IO-540-J4A5 model. GE Engine Services-Corporate Aviation Inc. DBA Garrett Aviation Services. Lists IO-540 Series
- [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter. Aviation Development Corporation
- [STC SE00890LA](https://openairdocs.org/stc/SE00890LA): Installation of Nickson's cylinder barrels on Lycoming reciprocating engine models. Nickson's Machine Shop Inc. Lists IO-540 Series
- [STC SE1657NM](https://openairdocs.org/stc/SE1657NM): Installation of Rotomaster3AU2ME60H3 (or H2) and3AV2ME60H3 (or H2), turbo- chargers, optional intercooler and associated systems. Machen Inc
- [STC SE3590NM](https://openairdocs.org/stc/SE3590NM): Installation of Machen intercooler and associated systems. Machen Inc
- [STC SE09492SC](https://openairdocs.org/stc/SE09492SC): Installation and usage of Exxon 20W50 multigrade aircraft engine oil conforming to Exxon Oil formulation WS-3013. Exxon Company USA. Lists IO-540 Series
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation
- [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co. Lists IO-540 Series
- [STC SE4941NM](https://openairdocs.org/stc/SE4941NM): Install low-compression pistons, new fuel servo and new fuel pump. Merlyn Products Inc
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists IO-540 Series
- [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP. Phillips Petroleum Co. Lists IO-540 Series
- [STC SE5924SW](https://openairdocs.org/stc/SE5924SW): Installation of stainless steel replacement exhaust studs on AVCO engines. Perrigo & Steele Aircraft Engr Company. Lists IO-540 Series
- [STC SE244NE](https://openairdocs.org/stc/SE244NE): Installation of Mattituck plasma flame sprayed cylinder barrels in Teledyne reciprocating engines. Mattituck Airbase, Inc. Lists IO-540 Series
- [STC SE80NE](https://openairdocs.org/stc/SE80NE): Installation and usage of Bel-Ray synthetic aviation oil, Bel-Ray Aero 1, (nonsupercharged), horizontally opposed direct drive, aircraft engines of 350 hp. or less. Bel-Ray Company, Inc. Lists IO-540 Series
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists IO-540 Series
- [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines. AMS/OIL. Lists IO-540 Series
- [STC SE81WE](https://openairdocs.org/stc/SE81WE): Installation of two Rajay turbo- chargers, Model 325EF80, P/N 0330-1 and -2, and 9 lb. +- 1 lb. sonic nozzle on Lycoming engine Model IO-540-S1A5. Aerostar Aircraft Corporation
- [STC SE44WE](https://openairdocs.org/stc/SE44WE): Use of Kling Aviation Oil, Specifications KL-100, KL-200 and KL-300 in Continental and Lycoming engines. Kling Oil Company. Lists IO-540 Series
- [STC SA01436DE](https://openairdocs.org/stc/SA01436DE) (historical): Installation of Firewall Forward Technologies, LLC modified camshaft. Centri-Lube Technologies LLC

## PMA parts (OpenAirDocs) (over 1,000, 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.

- [ES66M19385](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID186804045820251216184409.0001): Clamp, Magneto. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 66M19385 · Nov 10, 2025
- [ES10-400567](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182838314420251216184405.0001): Bearing, Ball. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-400567 · Nov 10, 2025
- [ES10-349249](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID172741321620251216184404.0001): Washer, Bowed. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349249 · Nov 10, 2025
- [ES10-180046-28](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID170373951520251216184357.0001): Sleeve, Clear. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-180046-28 · Nov 10, 2025
- [ES-349310-8](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164135450720251216184352.0001): Magneto Assembly, S-1200 Series, 6 Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW-349310-8, LW-349310-8D… · Nov 10, 2025
- [ES10-349247](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID155835169920251216184407.0001): Retainer, Bearing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349247 · Nov 10, 2025
- [ES10-78655](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID148578074420251216184359.0001): Washer, Flat. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-78655 · Nov 10, 2025
- [ES10-35937-24](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID131353354520251216184356.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-35937-24 · Nov 10, 2025
- [ES-349290-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID124195582920251216184349.0001): Magneto Assembly, S-1200 Series, 6 Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW-349290-1, LW-349290-1D, 75454… · Nov 10, 2025
- [ES-349310-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117952123520251216184351.0001): Magneto Assembly, S-1200 Series, 6 Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW-349310-1, LW-349310-1D, 75453… · Nov 10, 2025
- [ES10-5752](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID115793636520251216184401.0001): Cable, Clip. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-5752 · Nov 10, 2025
- [ES10-349328](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID114147850320251216184403.0001): Flat Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349328 · Nov 10, 2025
- [ES10-349221](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID111222593020251216184358.0001): Stud, Hex 10-32. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349221 · Nov 10, 2025
- [ES10-349242](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID110743662720251216184408.0001): Gear, Spur, 1200 Series, 6-Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349242 · Nov 10, 2025
- [ES10-349243-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID108636864620251216184402.0001): Cam, 1200. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-349243-2 · Nov 10, 2025
- [AB-160844](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100141747720251216184413.0001): Spring & Brush Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-160844 · Nov 10, 2025
- [OC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178549155320250923184433.0001): Oil Cooler Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Sep 12, 2025
- [CFRS16803-137](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID135831136720251002184910.0001): Liner. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces RS16803-137 · Sep 2, 2025
- [AE45BS](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID187750711420250908153020.0001): Brush Rack Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALU1045BS · Aug 27, 2025
- [AE943](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID185624017520250908153027.0001): Rotor Shaft. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALU-228 · Aug 27, 2025
- [AE1003](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID179565848920250908153019.0001): Drive End Housing. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number A2E1003K · Aug 27, 2025
- [AE45BS-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID173583138520250908153031.0001): Brush Rack Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALU-1045BS · Aug 27, 2025
- [AE944](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157009852420250908153027.0001): Rotor Shaft. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALE-273 · Aug 27, 2025
- [AE45BS-E](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID143460060920250908153031.0001): Brush Rack Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number ALE-1045BS · Aug 27, 2025
- [AE2241](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID127316494620250908153022.0001): Fan Assembly. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Number 90-2241 · Aug 27, 2025
- [AE1132](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103582853720250908153023.0001): Slip Ring End Housing. Aerospace Turbine Rotables · PMA PQ3736CE · Replaces Prestolite Part Numbers ALK-1132AS… · Aug 27, 2025
- [SL6](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151538433320250923185921.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025
- [TXPL6](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID146504457020250923185923.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025
- [HSS](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID104096221220250923185925.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025
- [AA48111-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120682187320240813134136.0001): Oil Filter. Aero Accessories LLC · PMA PQ1206CE · Replaces Aero AccessoriesAA48111Champion… · Jul 12, 2024
- [CF73966](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178353257420240715164040.0001): Spacer. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces 73966 · Jun 24, 2024
- [CF07A23031](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID136616521920240715164043.0001): Bracket, Fuel Manifold. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces 07A23031 · Jun 24, 2024
- [CFSTD-251](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129676558220240715164045.0001): Washer, #10 Lock, Internal Teeth. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces STD-251 · Jun 24, 2024
- [CFSTD-82](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID123933662120240715164045.0001): Screw,   #10-24 X 1/2, RD HD. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces STD-82 · Jun 24, 2024
- [201F-5003](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID182515755020240701174400.0001): Fuel Pump. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Lear RomecRG17980D/MLycoming… · Jun 20, 2024
- [201F-5001](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163992869220240701174359.0001): Fuel Pump. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Lear RomecRG17980/MLycoming… · Jun 20, 2024
- [ES3018](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194884707820251216184204.0001): Clamp, Bearing Cap. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3018 · May 20, 2024
- [AM-3021](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194256093820251216184144.0001): Screw Distributor Block. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3021 · May 20, 2024
- [ES5617](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID190223284620251216184226.0001): Machining, Rotating Magnet. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M5617 · May 20, 2024
- [ES3221](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189601053820251216184228.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3221 · May 20, 2024
- [AK-3975](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181109606820251216184201.0001): Coil, Ignition. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3009, M3114, M3525, K3975, K3975 · May 20, 2024
- [AM-3015](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180990573320251216184149.0001): Screw, Housing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3015 · May 20, 2024
- [AM-3006](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178460806720251216184151.0001): Bearing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3006 · May 20, 2024
- [AM2536](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175576430320251216184152.0001): Woodruff Key. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M2536 · May 20, 2024
- [ES3040](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175045989620251216184205.0001): Coil Wedge. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3040 · May 20, 2024
- [AK-3984](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168254730520251216184200.0001): Capacitor. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3183, K3984 · May 20, 2024
- [AM-2556](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164604517920251216184155.0001): Cotter Pin. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M2556 · May 20, 2024
- [ES3637K](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID163564757720251216184213.0001): Contact Point Secondary. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3637 · May 20, 2024
- [ES3084](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152458666320251216184211.0001): Air Vent With Hood. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3084 · May 20, 2024
- [AM-3217](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152412216720251216184157.0001): Wave Spring Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M-3217 · May 20, 2024

All of them: https://openairdocs.org/engine/lycoming-io-540-s1a5/pma.md

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