# Lycoming IO-540-AC1A5

- Type: Engine model (FAA registry)
- Registry code: 41809
- Manufacturer (registry): LYCOMING
- Model: IO-540-AC1A5
- Engine type: Reciprocating
- Power: 300 hp
- Data sheet: [TCDS 1E4](https://openairdocs.org/tcds/1E4) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 50 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-io-540-ac1a5

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 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 2007-04-19 R1](https://openairdocs.org/ad/2007-04-19-R1): SAP cylinder assemblies · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 314 more. Effective May 7, 2007
- [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 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 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

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 81-18-04 R2](https://openairdocs.org/ad/81-18-04-R2) (historical): Engine Oil Pump Driven Impeller and Shaft · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 376 more. Effective Jun 7, 1982

## 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 (50)

- [N102AK](https://openairdocs.org/aircraft/N102AK): built 2006, S/N 20608264
- [N12730](https://openairdocs.org/aircraft/N12730): [Silver Creek Aviation Services](https://openairdocs.org/faa-owner/SILVER%20CREEK%20AVIATION%20SERVICES), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 2007, S/N 20608302
- [N132PS](https://openairdocs.org/aircraft/N132PS): [U S Department Of The Interior](https://openairdocs.org/faa-owner/U%20S%20DEPARTMENT%20OF%20THE%20INTERIOR), [Boise, ID](https://openairdocs.org/faa-place/ID/Boise), S/N 20608278
- [N1338B](https://openairdocs.org/aircraft/N1338B): [Silver Creek Aviation Services](https://openairdocs.org/faa-owner/SILVER%20CREEK%20AVIATION%20SERVICES), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 2011, S/N 20608331
- [N137P](https://openairdocs.org/aircraft/N137P): [Ferguson Frampton Z](https://openairdocs.org/faa-owner/FERGUSON%20FRAMPTON%20Z), [Furman, SC](https://openairdocs.org/faa-place/SC/Furman), S/N 20608304
- [N158P](https://openairdocs.org/aircraft/N158P): [Andry Holdings LLC](https://openairdocs.org/faa-owner/ANDRY%20HOLDINGS%20LLC), [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula), built 2008, S/N 20608306
- [N193P](https://openairdocs.org/aircraft/N193P): [Nc Wildlife Resources Commission Enforcement Div](https://openairdocs.org/faa-owner/NC%20WILDLIFE%20RESOURCES%20COMMISSION%20ENFORCEMENT%20DIV), [Raleigh, NC](https://openairdocs.org/faa-place/NC/Raleigh), built 2008, S/N 20608307
- [N206FN](https://openairdocs.org/aircraft/N206FN): [Flying Neutrons LLC](https://openairdocs.org/faa-owner/FLYING%20NEUTRONS%20LLC), [Lebanon, OH](https://openairdocs.org/faa-place/OH/Lebanon), built 1999, S/N 20608026
- [N206MX](https://openairdocs.org/aircraft/N206MX): [Frogfeet LLC](https://openairdocs.org/faa-owner/FROGFEET%20LLC), Barcelona, built 2001, S/N 20608149
- [N206ZB](https://openairdocs.org/aircraft/N206ZB): [16d LLC](https://openairdocs.org/faa-owner/16D%20LLC), [Vashon, WA](https://openairdocs.org/faa-place/WA/Vashon), built 2006, S/N 20608276
- [N2163S](https://openairdocs.org/aircraft/N2163S): [Olde Towne Transport LLC](https://openairdocs.org/faa-owner/OLDE%20TOWNE%20TRANSPORT%20LLC), [Beaufort, NC](https://openairdocs.org/faa-place/NC/Beaufort), built 2007, S/N 20608285
- [N2175Q](https://openairdocs.org/aircraft/N2175Q): [Tvpx Aircraft Solutions Inc Trustee](https://openairdocs.org/faa-owner/TVPX%20AIRCRAFT%20SOLUTIONS%20INC%20TRUSTEE), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 2004, S/N 20608191
- [N223HC](https://openairdocs.org/aircraft/N223HC): [G206 LLC](https://openairdocs.org/faa-owner/G206%20LLC), [San Juan, PR](https://openairdocs.org/faa-place/PR/San%20Juan), built 2006, S/N 20608269
- [N2461D](https://openairdocs.org/aircraft/N2461D): [Winged Vision Inc](https://openairdocs.org/faa-owner/WINGED%20VISION%20INC), [Gaithersburg, MD](https://openairdocs.org/faa-place/MD/Gaithersburg), built 2007, S/N 20608295
- [N2462G](https://openairdocs.org/aircraft/N2462G): [Winged Vision Inc](https://openairdocs.org/faa-owner/WINGED%20VISION%20INC), [Gaithersburg, MD](https://openairdocs.org/faa-place/MD/Gaithersburg), built 2007, S/N 20608296
- [N267MC](https://openairdocs.org/aircraft/N267MC): [Kitchen Blaine III](https://openairdocs.org/faa-owner/KITCHEN%20BLAINE%20III), [Rochester, MA](https://openairdocs.org/faa-place/MA/Rochester), built 2006, S/N 20608267
- [N281RJ](https://openairdocs.org/aircraft/N281RJ): [Wik Jay C](https://openairdocs.org/faa-owner/WIK%20JAY%20C), [Fergus Falls, MN](https://openairdocs.org/faa-place/MN/Fergus%20Falls), built 2011, S/N 40536
- [N288SP](https://openairdocs.org/aircraft/N288SP): [Glass Cockpit Aviation Inc](https://openairdocs.org/faa-owner/GLASS%20COCKPIT%20AVIATION%20INC), [San Juan, PR](https://openairdocs.org/faa-place/PR/San%20Juan), built 2006, S/N 20608282
- [N293RC](https://openairdocs.org/aircraft/N293RC): [Charlie Papa Aviation LLC](https://openairdocs.org/faa-owner/CHARLIE%20PAPA%20AVIATION%20LLC), [Mayaguez, PR](https://openairdocs.org/faa-place/PR/Mayaguez), built 2006, S/N 20608281
- [N294PJ](https://openairdocs.org/aircraft/N294PJ): [Jones Kelly W](https://openairdocs.org/faa-owner/JONES%20KELLY%20W), [Winchester, OH](https://openairdocs.org/faa-place/OH/Winchester), built 2010, S/N 12659
- [N332SC](https://openairdocs.org/aircraft/N332SC): [Silver Creek Aviation Services](https://openairdocs.org/faa-owner/SILVER%20CREEK%20AVIATION%20SERVICES), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 2011, S/N 20608332
- [N334WD](https://openairdocs.org/aircraft/N334WD): [Southwest Aviation Enterprises](https://openairdocs.org/faa-owner/SOUTHWEST%20AVIATION%20ENTERPRISES), [Haslet, TX](https://openairdocs.org/faa-place/TX/Haslet), built 2011, S/N 20608334
- [N473YC](https://openairdocs.org/aircraft/N473YC): [U S Department Of The Interior](https://openairdocs.org/faa-owner/U%20S%20DEPARTMENT%20OF%20THE%20INTERIOR), [Boise, ID](https://openairdocs.org/faa-place/ID/Boise), built 2012, S/N 20608348
- [N484JB](https://openairdocs.org/aircraft/N484JB): [Silver Creek Aviation Services](https://openairdocs.org/faa-owner/SILVER%20CREEK%20AVIATION%20SERVICES), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 2008, S/N 20608314
- [N51HF](https://openairdocs.org/aircraft/N51HF): [San Mateo County Sheriff'S Office](https://openairdocs.org/faa-owner/SAN%20MATEO%20COUNTY%20SHERIFF'S%20OFFICE), [Redwood City, CA](https://openairdocs.org/faa-place/CA/Redwood%20City), built 2012, S/N 20608347
- [N540DG](https://openairdocs.org/aircraft/N540DG): [Hargreaves William A](https://openairdocs.org/faa-owner/HARGREAVES%20WILLIAM%20A), [Lovettsville, VA](https://openairdocs.org/faa-place/VA/Lovettsville), S/N 0001
- [N564LM](https://openairdocs.org/aircraft/N564LM): [Sky Horse LLC](https://openairdocs.org/faa-owner/SKY%20HORSE%20LLC), [Santa Cruz, CA](https://openairdocs.org/faa-place/CA/Santa%20Cruz), built 2012, S/N 20608340
- [N571TC](https://openairdocs.org/aircraft/N571TC): [Pardue Troy W](https://openairdocs.org/faa-owner/PARDUE%20TROY%20W), [Downsville, LA](https://openairdocs.org/faa-place/LA/Downsville), built 2006, S/N 20608271
- [N590MM](https://openairdocs.org/aircraft/N590MM): [Tvpx Aircraft Solutions Inc Trustee](https://openairdocs.org/faa-owner/TVPX%20AIRCRAFT%20SOLUTIONS%20INC%20TRUSTEE), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 2012, S/N 20608339
- [N610AG](https://openairdocs.org/aircraft/N610AG): [Obr Leasing](https://openairdocs.org/faa-owner/OBR%20LEASING), [Bristow, VA](https://openairdocs.org/faa-place/VA/Bristow), built 2010, S/N 20608324
- [N612BK](https://openairdocs.org/aircraft/N612BK): [Kqm Aviation](https://openairdocs.org/faa-owner/KQM%20AVIATION), [Manassas, VA](https://openairdocs.org/faa-place/VA/Manassas), built 2010, S/N 20608325
- [N6187Y](https://openairdocs.org/aircraft/N6187Y): [Silver Creek Aviation Services](https://openairdocs.org/faa-owner/SILVER%20CREEK%20AVIATION%20SERVICES), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 2008, S/N 20608309
- [N6188B](https://openairdocs.org/aircraft/N6188B): [Silver Creek Aviation Services](https://openairdocs.org/faa-owner/SILVER%20CREEK%20AVIATION%20SERVICES), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 2008, S/N 20608310
- [N6188Q](https://openairdocs.org/aircraft/N6188Q): [Silver Creek Aviation Services](https://openairdocs.org/faa-owner/SILVER%20CREEK%20AVIATION%20SERVICES), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 2008, S/N 20608305
- [N7254H](https://openairdocs.org/aircraft/N7254H): [Vevani Aircraft LLC](https://openairdocs.org/faa-owner/VEVANI%20AIRCRAFT%20LLC), [Miami Gardens, FL](https://openairdocs.org/faa-place/FL/Miami%20Gardens), built 1999, S/N 20608036
- [N767GE](https://openairdocs.org/aircraft/N767GE): [Greystoke Leasing Inc](https://openairdocs.org/faa-owner/GREYSTOKE%20LEASING%20INC), [Flagstaff, AZ](https://openairdocs.org/faa-place/AZ/Flagstaff), built 2009, S/N 20608317
- [N786TF](https://openairdocs.org/aircraft/N786TF): [American Corporate Executive Services](https://openairdocs.org/faa-owner/AMERICAN%20CORPORATE%20EXECUTIVE%20SERVICES), [Plantation, FL](https://openairdocs.org/faa-place/FL/Plantation), built 2008, S/N 20608316
- [N8330B](https://openairdocs.org/aircraft/N8330B): [Silver Creek Aviation Services](https://openairdocs.org/faa-owner/SILVER%20CREEK%20AVIATION%20SERVICES), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 2011, S/N 20608330
- [N833CG](https://openairdocs.org/aircraft/N833CG): [Paragon Air Group](https://openairdocs.org/faa-owner/PARAGON%20AIR%20GROUP), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 2011, S/N 20608333
- [N841LM](https://openairdocs.org/aircraft/N841LM): [Tvpx Aircraft Solutions Inc Trustee](https://openairdocs.org/faa-owner/TVPX%20AIRCRAFT%20SOLUTIONS%20INC%20TRUSTEE), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 2012, S/N 20608341
- [N852LR](https://openairdocs.org/aircraft/N852LR): [Silver Creek Aviation Services](https://openairdocs.org/faa-owner/SILVER%20CREEK%20AVIATION%20SERVICES), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 2008, S/N 20608313
- [N865W](https://openairdocs.org/aircraft/N865W): [Michigan Dept Of Natural Resources](https://openairdocs.org/faa-owner/MICHIGAN%20DEPT%20OF%20NATURAL%20RESOURCES), [Roscommon, MI](https://openairdocs.org/faa-place/MI/Roscommon), built 2013, S/N 20608352
- [N86WE](https://openairdocs.org/aircraft/N86WE): [Blue Air 1 LLC](https://openairdocs.org/faa-owner/BLUE%20AIR%201%20LLC), [Homestead, FL](https://openairdocs.org/faa-place/FL/Homestead), built 2005, S/N 20608243
- [N900HP](https://openairdocs.org/aircraft/N900HP): [Kansas Highway Patrol](https://openairdocs.org/faa-owner/KANSAS%20HIGHWAY%20PATROL), [Topeka, KS](https://openairdocs.org/faa-place/KS/Topeka), built 2012, S/N 20608344
- [N90322](https://openairdocs.org/aircraft/N90322): [State Of Alaska Department Of Public Safety](https://openairdocs.org/faa-owner/STATE%20OF%20ALASKA%20DEPARTMENT%20OF%20PUBLIC%20SAFETY), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), S/N 20608323
- [N904CR](https://openairdocs.org/aircraft/N904CR): [Los Cazadores Aviation LLC](https://openairdocs.org/faa-owner/LOS%20CAZADORES%20AVIATION%20LLC), [Cut Off, LA](https://openairdocs.org/faa-place/LA/Cut%20Off), built 2006, S/N T20608692
- [N940HP](https://openairdocs.org/aircraft/N940HP): [Kansas Highway Patrol](https://openairdocs.org/faa-owner/KANSAS%20HIGHWAY%20PATROL), [Topeka, KS](https://openairdocs.org/faa-place/KS/Topeka), S/N 20608343
- [N9433R](https://openairdocs.org/aircraft/N9433R): [Tvpx Aircraft Solutions Inc Trustee](https://openairdocs.org/faa-owner/TVPX%20AIRCRAFT%20SOLUTIONS%20INC%20TRUSTEE), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 2012, S/N 20608337
- [N94405](https://openairdocs.org/aircraft/N94405): [Tvpx Aircraft Solutions Inc Trustee](https://openairdocs.org/faa-owner/TVPX%20AIRCRAFT%20SOLUTIONS%20INC%20TRUSTEE), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 2012, S/N 20608345
- [N9536F](https://openairdocs.org/aircraft/N9536F): [Tvpx Aircraft Solutions Inc Trustee](https://openairdocs.org/faa-owner/TVPX%20AIRCRAFT%20SOLUTIONS%20INC%20TRUSTEE), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 2012, S/N 20608336

## NTSB investigations (1)

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 CEN09FA083](https://openairdocs.org/ntsb/CEN09FA083), Dec 6, 2008: Cessna 206H (N6053B), Kalkaska, MI, destroyed, 1 fatal. Probable cause: The pilot's failure to maintain clearance from trees and terrain during the instrument-flight-rules flight. Contributing to the accident was the pilot's failure to comply with instrument flight…

## 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 20230127000749I](https://openairdocs.org/incident/20230127000749I), Jan 27, 2023: Cessna 206H (N940HP), Osage City, KS, Minor damage. On 01/27/2023, pic/cfi [privacy data omitted]provided flight instruction to Kansas highway patrol (khp) officer and pilot [privacy data omitted], to prepare…
- [Incident 20211206020629I](https://openairdocs.org/incident/20211206020629I), Dec 6, 2021: Cessna 206H (N5235C), Lake Charles, LA, Minor damage. The pilot of an amphibious floatplane landed on runway 15 at kcwf with the landing gear retracted. The pilot notified ATC who initiated an alert iii response.…
- [Incident 20180803013629I](https://openairdocs.org/incident/20180803013629I), Aug 3, 2018: Cessna 206H (N9536F), St. Louis, MO, Minor damage. N9536F departed spirit of St. Louis airport (ksus) and was on a VFR photo flight in the vicinity of lambert airport (kstl) aprroximalty 5 NM east of the…
- [Incident 20120926022359I](https://openairdocs.org/incident/20120926022359I), Sep 26, 2012: Cessna 206H (N940HP), Topeka, KS, Minor damage. During the takeoff roll the right hand wheel fairing came loose. Upon landing the wheel locked up and the aircraft went in to the grass off the right side of…
- [Incident 20100825050319I](https://openairdocs.org/incident/20100825050319I), Aug 25, 2010: Cessna 206H (N1326B), Charleston, SC, Minor damage. Due to gusting winds the aircraft pitched slightly downward which caused the nose tire to go flat upon landing and the propeller tips then struck the ground.…
- [Incident 20091231054169I](https://openairdocs.org/incident/20091231054169I), Dec 31, 2009: Cessna 206H (N288SP), Culebra Island, PR, Minor damage. Upon landing wind change direction and speed, (like windshear but not associated with cb. Mechanical turbulance), resulting in a tail wind. Landing roll was…
- [Accident 20081206854819A](https://openairdocs.org/incident/20081206854819A), Dec 6, 2008: Cessna 206H (N6053B), Kalkaska, MI, Destroyed, 1 fatal. (-23) Tvc ATCT manager reported that pilot had reported icing in clouds and requested diversion into tvc, while shooting the ILS 28 at tvc, pilot stated that…
- [Incident 20020403007339I](https://openairdocs.org/incident/20020403007339I), Apr 3, 2002: Cessna 206H (N7254H), Willow, AK, Minor damage. (-23) The engine lost oil pressure in cruise flight. Pilot elected a precautinary landing on a snow-covered remote airport. The aircraft sank through the snow…

## Service difficulty reports (45)

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

- [SDR 2024FA0000578](https://openairdocs.org/sdr/2024FA0000578), May 20, 2024: MAGNETO. FAILED. MAGNETO FAILED
- [SDR 2024FA0000078](https://openairdocs.org/sdr/2024FA0000078), Jan 29, 2024: BLADE. LOOSE. AFTER A FLIGHT A MECHANIC NOTICED THE SNAP RING AT THE BASE OF ONE OF THE PROPELLER BLADES WAS NOT IN ITS GROOVE AT THE BLADE ROOT BUT WAS DISLODGED AND WEDGED 
- [SDR 2024FA0000572](https://openairdocs.org/sdr/2024FA0000572), Jan 29, 2024: MAGNETO. FAILED. MAGNETO FAILED
- [SDR 2018FA0000345](https://openairdocs.org/sdr/2018FA0000345), Aug 3, 2018: INTAKE VALVE. BROKEN. ENGINE LOST POWER IN FLIGHT, RESULTING IN AN EMERGENCY LANDING. INSPECTION REVEALED THAT THE NUMBER 1 CYLINDER INTAKE VALVE FAILED, DAMAGING THE PISTON.
- [SDR 2017FA0000289](https://openairdocs.org/sdr/2017FA0000289), Jul 18, 2017: PUMP. SHEARED. VACUUM PUMP FAILED IN FLIGHT. CAUSED INSTRUMENT OPERATIONAL FAILURE OF SEVERAL INSTRUMENTS. OVERHAULED.
- [SDR 2017FA0000080](https://openairdocs.org/sdr/2017FA0000080), Feb 14, 2017: PUMP. FAILED. PILOT REPORTED MINOR ENGINE SURGING DURING FLIGHT. AFTER TROUBLESHOOTING AND REPAIRS, FOUND TO BE THE ENGINE DRIVEN FUEL PUMP INTERMITTENTLY DROPPING FUEL PRESS
- [SDR 2017FA0000028](https://openairdocs.org/sdr/2017FA0000028), Jan 25, 2017: PUSHROD. UNSERVICEABLE. PUSHRODS INSPECTED PER SA-167A AND FOUND THAT ALL PUSHROD ENDS EXCEED THE LIMITATIONS OF THE SA AND ARE ORDERED AOG TO REPLACE ALL PUSHRODS AND ROCKER ARMS.
- [SDR 2016FA0000592](https://openairdocs.org/sdr/2016FA0000592), Dec 6, 2016: PUSHROD. SCORED. ONE ROCKER ARM IS SHOWING SIGNS OF SCORING ALONG WITH A PUSHROD, AND A HYDRAULIC LIFTER CAP. REPLACED IAW SA-167A.
- [SDR 2016FA0000544](https://openairdocs.org/sdr/2016FA0000544), Oct 26, 2016: TRANSPONDER. FAILED. TRANSPONDER FAILED WITH A PUFF OF SMOKE. FOLLOWED BY A FAIL MESSAGE. UNIT SECURED AND LANDED.
- [SDR 2P9A3229](https://openairdocs.org/sdr/2P9A3229), Oct 1, 2016: SPARK PLUG. BROKEN. DURING CRUISE FLIGHT, THE PILOT EXPERIENCED A SUDDEN RISE IN EGT AND CHT FOR NR 4 CYLINDER AND THEN EXPERIENCED A ROUGH RUNNING ENGINE. PILOT MADE A PRECAUTIONA
- [SDR 2016FA0000374](https://openairdocs.org/sdr/2016FA0000374), Jul 27, 2016: ACTUATOR. FAILED. FROM SAFETY REPORT, AIRCRAFT ELEVATOR TRIM WHEEL FAILURE ON DEPARTURE. ATTEMPTED ELEVATOR TRIM INPUT, NOSE UP, USING THE YOKE TRIM SWITCH AND NOTICED NOTHING HA
- [SDR 2016FA0000325](https://openairdocs.org/sdr/2016FA0000325), Jul 6, 2016: ALTERNATOR. BROKEN. OIL LEAKING ONTO RIGHT SIDE OF AIRCRAFT UNDERBELLY OBSERVED IN POSTFLIGHT. INSPECTED ENGINE FOR OIL LEAK. INSPECTED NR 2 ALTERNATOR. FOUND MOUNTING BASE OF ALTE
- [SDR 2015FA0000219](https://openairdocs.org/sdr/2015FA0000219), May 20, 2015: CONNECTOR. MELTED. ALL AIRCRAFT SYSTEMS POWERED BY ESSENTIAL BUS 2 FAILED DURING TAKEOFF WITHOUT TURNING THE SWITCH OFF. ITEMS ON BUS 2 INCLUDE: THE TURN COORDINATOR, NAV LIGHTS, 
- [SDR 2015FA0000175](https://openairdocs.org/sdr/2015FA0000175), Apr 30, 2015: VALVE. BROKEN. UPON LANDING THE PILOT NOTICED THAT THE WAS PULLING TO THE LEFT. THE TIRE WAS REMOVED AND FOUND THAT THE VALVE STEM HAD FRACTURED AND DEPARTED APPROXIMATELY .25
- [SDR 2015FA0000125](https://openairdocs.org/sdr/2015FA0000125), Apr 2, 2015: CONNECTOR. MELTED. ALL APPLIANCES AND SYSTEMS ON ACFT ESSENTIAL BUS 2 POWERED OFF WITH THE BUS 2 SWITCH ON. ITEMS ON BUS 2 INCLUDE: THE TURN COORDINATOR, NAV LIGHTS, INTERIOR LIGH
- [SDR 2015FA0000126](https://openairdocs.org/sdr/2015FA0000126), Apr 2, 2015: CONNECTOR. MELTED. ALL APPLIANCES AND SYSTEMS ON ACFT ESSENTIAL BUS 2 POWERED OFF WITH THE SWITCH ON. ITEMS ON BUS 2 INCLUDE: THE TURN COORDINATOR, NAV LIGHTS, INTERIOR LIGHTS, ST
- [SDR LC1R20140305001](https://openairdocs.org/sdr/LC1R20140305001), Mar 5, 2014: PRESSURE SWITCH. LEAKING. AD 2013-11-11 HAD BEEN COMPLIED WITH BY IDENTIFYING THE PART NUMBER OF THE OIL PRESS SWITCH AS 83278 WHICH WOULD GIVE IT A 3000 HOUR SERVICE LIFE. DURING THE AN
- [SDR 2013FA0000231](https://openairdocs.org/sdr/2013FA0000231), Feb 26, 2013: BULKHEAD. CRACKED. AIRCRAFT CAME INTO THE MX SHOP FOR AN ANNUAL INSPECTION. THE ACFT IS ON A SET OF AMPHIBIOUS FLOATS, MODEL 3450. AFTER REMOVING THE RIGHT FLOAT BUMPER, 2 CRACKS 
- [SDR 2012FA0000733](https://openairdocs.org/sdr/2012FA0000733), Jul 29, 2012: INTAKE VALVE. SEPARATED. AT CRUISE FLIGHT, PILOT EXPERIENCED A BANG AND LOSS OF ENGINE POWER. ACFT LANDED SAFELY AT NEARBY AIRPORT. DURING COMPRESSION CHECK IT WAS FOUND THAT NR 6 CYL H
- [SDR 2011FA0000593](https://openairdocs.org/sdr/2011FA0000593), Sep 7, 2011: PISTON PIN. MISSING. BOTH PISTON PIN PLUGS WERE OMITTED FROM A CYLINDER DURING ENGINE ASSEMBLY AT THE FACTORY. DURING AN ANNUAL INSPECTION, THE COMPRESSION TEST INDICATED NO PRESSUR
- [SDR 2009FA0000024](https://openairdocs.org/sdr/2009FA0000024), Dec 4, 2008: SERVO. LEAKING. FUEL SERVO LEAKED WHILE ACFT WAS PARKED OVERNIGHT. THE MIXTURE WAS IN CUT OFF POSITION. FLIGHT MANUAL, SEC 4, NORMAL PROCEDURES PAGE 4-23 SECURING ACFT NR 10 ST
- [SDR 2008FA0000212](https://openairdocs.org/sdr/2008FA0000212), Mar 19, 2008: GASKET. UNKNOWN. INSPECTED FUEL SERVO PLUG IAW SBPRS-107, REVISION 1, DATED MARCH 6, 2008. NO DAMAGE FOUND ON THE THREADS OF THE PLUG OF THE SERVO UNIT. INSTALLED PLUG AND SAFET
- [SDR 2006FA0000357](https://openairdocs.org/sdr/2006FA0000357), Mar 13, 2006: SERVO. INOPERATIVE. AIRCRAFT LANDED AND ENGINE QUIT. TO RESTART ENGINE MIXTURE HAD TO PULL MIXTURE BACK TO .5 INCH OF IDLE CUT TO KEEP ENGINE RUNNING. TRIED TO ADJUST IDLE MIXTURE 
- [SDR 2006FA0000275](https://openairdocs.org/sdr/2006FA0000275), Mar 7, 2006: ALTERNATOR. BURNED. BATTERY TERMINAL LUG BURNT OFF DUE TO SHORT CAUSED BY TERMINAL ON WIRE HARNESS BREAKING OFF. THIS CAUSED THE ALTERNATOR CONTROL UNIT TO FAIL (SMOKE) AND HEAVY A
- [SDR CA060105004](https://openairdocs.org/sdr/CA060105004), Jan 5, 2006: CONTROL CABLE. FRAYED. WATER RUDDER STEERING CABLES ARE FRAYED WHERE IT ENTERS THE SIDE OF THE FLOAT. THE MAIN CAUSE OF THIS IS A MISALIGNMENT OF THE HOLE ON THE SIDE OF THE FLOAT TO 
- [SDR 2004FA0000861](https://openairdocs.org/sdr/2004FA0000861), Oct 31, 2004: WIRE. BURNED. PILOT REPORTED AN ALTERNATOR FAILURE. REMOVED ENGINE COWLING AND FOUND THE POWER WIRE AND THE GROUND WIRE FOR THE ALTERNATOR WERE BROKEN IN HALF ABOUT 3 INCHES 
- [SDR 2004FA0000649](https://openairdocs.org/sdr/2004FA0000649), Aug 19, 2004: SUMP. CRACKED. DURING AN ANNUAL INSPECTION THE ENGINE OIL SUMP WAS FOUND CRACKED IN THE LT REAR STUD BOSS WHERE THE STUD US THREADED INTO THE SUMP.
- [SDR 2004FA0000652](https://openairdocs.org/sdr/2004FA0000652), May 10, 2004: RESERVOIR. LEAKING. RESERVOIR FUEL TANKS BELOW FUEL SELECTOR WAS LEAKING FUEL FROM A SEEM WELD THAT HAD CRACKED. FOUND DURING ROUTINE WALK AROUND INSPECTION. THE LEAK WHEN FIRST NO
- [SDR 2003FA0001061](https://openairdocs.org/sdr/2003FA0001061), Jul 25, 2003: DISTRIBUTOR BLK. BURNED. DISTRIBUTOR BLOCK AND GEAR ASSEMBLY BURNED UP.
- [SDR 2002FA0000551](https://openairdocs.org/sdr/2002FA0000551), Apr 1, 2002: GASKET. FAILED. DURING CRUISE FLIGHT LOST OIL PRESSURE INDICATION, MADE A PRECAUTIONARY LANDING ON A SNOW COVERED REMOTE RUNWAY, AIRCRAFT NOSED DOWN AND HAD A PROP STRIKE, BEND
- [SDR 20001222SH012](https://openairdocs.org/sdr/20001222SH012), Dec 22, 2000: GEAR. SPALLED. DURING INSP C/W AD 91-14-22 AND LYC SB 475 REV A, NO DAMAGE FOUND TO CRANKSHAFT COUNTERBORE RECESS, ALIGNMENT DOWEL, RETAINING BOLTS AND THREADS. UPON INSP OF C
- [SDR 20001017SH035](https://openairdocs.org/sdr/20001017SH035), Aug 19, 2000: PUMP. SHEARED. RIGHT VACUUM PUMP FAILED, DRIVESHAFT SHEARED. (X)
- [SDR 20001013SH023](https://openairdocs.org/sdr/20001013SH023), Aug 14, 2000: PUMP. SHEARED. RIGHT VACUUM PUMP FAILED, DRIVESHAFT SHEARED. (X)
- [SDR 20000809SH027](https://openairdocs.org/sdr/20000809SH027), Jul 14, 2000: SUPPORT BRACKET. INCORRECT. DURING ROUTINE INSPECTION, FOUND THE ALTERNATOR BELT DRIVE SUPPORT MISALIGNED WITH THE ALTERNATOR PULLEY CAUSING THE BELT TO SLIP PARTIALLY OFF OF THE ALTERNATO
- [SDR 20000720SH019](https://openairdocs.org/sdr/20000720SH019), Jun 5, 2000: ENGINE. FAILED. PILOT REPORTED ENGINE SURGING ON TAKEOFF WITH SIGNIFICANT FUEL FLOW FLUCTUATION WHICH WAS CORRECTED WITH A DECREASE IN ENGINE POWER BY ADJUSTMENT OF THE PROP CO
- [SDR 20000720SH016](https://openairdocs.org/sdr/20000720SH016), May 3, 2000: FUEL LINE. CONTAMINATED. PILOT REPORTED ENGINE SURGING ON TAKEOFF WITH SIGNIFICANT FUEL FLOW FLUCTUATION WHICH WAS CORRECTED WITH A DECREASE IN ENGINE POWER BY ADJUSTMENT OF THE PROP CO
- [SDR 20000720SH018](https://openairdocs.org/sdr/20000720SH018), Apr 25, 2000: ENGINE. FAILED. PILOT REPORTED ENGINE SURGING ON TAKEOFF WITH SIGNIFICANT FUEL FLOW FLUCTUATION WHICH WAS CORRECTED WITH A DECREASE IN ENGINE POWER BY ADJUSTMENT OF THE PROP CO
- [SDR 20000802SH010](https://openairdocs.org/sdr/20000802SH010), Mar 22, 2000: GOVERNOR. LEAKING. DURING 100-HOUR INSPECTION, DISCOVERED PROPELLER GOVERNOR LEAKING FROM PLUG LOCATED ON THE TOP OF THE GOVERNOR. (X)
- [SDR 20000620SH016](https://openairdocs.org/sdr/20000620SH016), Mar 17, 2000: LINE. CHAFED. **ISAAC, NADA, PART NAME, ETC.***FOUND FUEL PRESSURE LINE, PN 1250990-16, AND OIL PRESSURE LINE, PN 1250990-15, RUBBING IN ENGINE COMPARTMENT. THESE LINES RUN F
- [SDR 20000802SH011](https://openairdocs.org/sdr/20000802SH011), Mar 13, 2000: LINE. DAMAGED. DURING A 100-HOUR INSPECTION, FOUND FUEL LINE FROM FUEL BOOST PUMP TO LT HEADER TANK LEAKING AT THE HEADER TANK FITTING. UPON REMOVAL OF LINE, DISCOVERED DAMAGE
- [SDR 20000802SH012](https://openairdocs.org/sdr/20000802SH012), Mar 6, 2000: PUMP. INOPERATIVE. PILOT REPORTED RIGHT VACUUM PUMP INOPERATIVE, ANNUNCIATOR LIGHT ILLUMINATED DURING FLIGHT. UPON REMOVAL OF THE VACUUM PUMP, DISCOVERED THE DRIVE COUPLING SHAFT 
- [SDR 20000802SH013](https://openairdocs.org/sdr/20000802SH013), Feb 23, 2000: LINE. DAMAGED. DURING THE AIRCRAFT''S FIRST 100-HOUR INSPECTION, DISCOVERED FUEL LEAK AT FUEL SELECTOR VALVE AROUND FITTING ON FUEL LINE FROM SELECTOR TO LT HEADER TANK. UPON 
- [SDR 20000518SH013](https://openairdocs.org/sdr/20000518SH013), Feb 15, 2000: CIRCUIT BREAKER. FAILED. DURING TROUBLESHOOTING OF KING KAP-140 AUTOPILOT SYSTEM, FOUND AUTOPILOT CIRCUIT BREAKER TO BE THE ''NON-PULLABLE'' TYPE CONTRARY TO THE PILOT OPERATING HANDBOO
- [SDR 20000518SH015](https://openairdocs.org/sdr/20000518SH015), Feb 11, 2000: WIRE. SHORTED. PILOT REPORTED SPARKS COMING FROM UNDER THE INSTRUMENT PANEL UPON ENERGIZING THE IGNITION SWITCH. UPON FURTHER INVESTIGATION, FOUND THE WIRE BUNDLE FOR THE CIRC
- [SDR 20000518SH014](https://openairdocs.org/sdr/20000518SH014), Feb 1, 2000: SHROUD. CRACKED. DISCOVERED OIL LEAK IN ENGINE COMPARTMENT COMING FROM RIGHT SIDE PUSH ROD TUBE SHROUD ON NR 5 CYLINDER ASSEMBLY. ON FURTHER INSPECTION, TUBE WAS FOUND CRACKED A

## STCs that may be installed (OpenAirDocs) (41)

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 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. Lists IO-540 Series
- [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 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 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 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
- [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
- [ES-349370-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID117076779520251216184355.0001): Magneto Assembly, S-1200 Series, 6 Cyl. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW-349370-4, LW-349370-4D, 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
- [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
- [CFSTD-8](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID111430821420240715164044.0001): Washer, Plain 1/4. PRECISION AIRMOTIVE LLC · PMA PQ0111NM · Replaces STD-8 · 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
- [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
- [ES917](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID170587168620251216184202.0001): Impulse Coupling Spring. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M917 · 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-ac1a5/pma.md

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