# Lycoming IO-540 series

- Type: Engine model (FAA registry)
- Registry codes: 41530, 41585
- Manufacturer (registry): LYCOMING
- Model: IO-540 SER · IO 540 SER
- Engine type: Reciprocating
- Power: 300 hp
- Data sheet: [TCDS 1E4](https://openairdocs.org/tcds/1E4) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 4,219 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-io-540-series

The registry names only the engine series, so ADs for every model in the series are matched. The FAA lists this model under more than one registry code, usually for different spellings of the maker. This page covers them all.

## 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 2015-02-07](https://openairdocs.org/ad/2015-02-07): Propeller governor shaft set screw · Lycoming Engines AEIO-320-D1B, AEIO-360-A1E, AEIO-360-A1E6 and 10 more. Effective Mar 11, 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 2010-07-08](https://openairdocs.org/ad/2010-07-08): Turbochargers · Kelly Aerospace Energy Systems HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 137 more. Effective Apr 19, 2010
- [AD 2009-26-12](https://openairdocs.org/ad/2009-26-12): Cylinder assemblies · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 264 more. Effective Feb 4, 2010
- [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 2006-12-07](https://openairdocs.org/ad/2006-12-07): ECi cylinder assemblies · Aerostar AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 386 more. Effective Jul 11, 2006
- [AD 2006-10-21](https://openairdocs.org/ad/2006-10-21): ECi connecting rods · Engine Components Reciprocating Engine Connecting Rods, AEIO-360-B1B, AEIO-360-B1D and 171 more. Effective Jun 22, 2006
- [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 2002-12-07](https://openairdocs.org/ad/2002-12-07): Oil Filter Converter Plate Gasket or the Converter Plate Kit · Lycoming Engines HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 95 more. Effective Jul 3, 2002
- [AD 99-04-04](https://openairdocs.org/ad/99-04-04): Impulse Coupling Pawl · Lycoming Engines IO-540-K1A5, IO-540-K1B5, IO-540-K1G5 and 6 more. Effective Feb 25, 1999
- [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 97-01-04](https://openairdocs.org/ad/97-01-04): Cylinder assemblies · Lycoming Engines IO-540-M1B5D, LTIO-540-F2BD, LTIO-540-J2B and 10 more. Effective Apr 22, 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 96-09-10](https://openairdocs.org/ad/96-09-10): Oil pump · Lycoming Engines AEIO-320-E1A, AEIO-320-E1B, AEIO-320-E2A and 334 more. Effective Jul 15, 1996
- [AD 95-26-02](https://openairdocs.org/ad/95-26-02): Aviation Gasoline · Lycoming Engines IO-320-B1A, IO-320-B1B, IO-320-B1C and 182 more. Effective Jan 24, 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 87-10-06 R1](https://openairdocs.org/ad/87-10-06-R1): Rocker Arm Assembly · Lycoming Engines IO-360-B4, IVO-360-A1A, O-340-A1A and 243 more. Effective Sep 1, 1989
- [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 81-03-05](https://openairdocs.org/ad/81-03-05): Mixture Control Shaft Assembly · Lycoming Engines IGO-540-A1A, IGO-540-B1A, IGO-540-B1C and 9 more. Effective Feb 11, 1981
- [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 75-08-09](https://openairdocs.org/ad/75-08-09): Oil Pump Drive Shaft · Lycoming Engines AEIO-360-A1B, AEIO-360-A1B6, AEIO-360-A1C and 365 more. Effective Aug 18, 1977
- [AD 73-23-01](https://openairdocs.org/ad/73-23-01): Piston Pin Assembly · Lycoming Engines AIO-360-A1A, AIO-360-A1B, AIO-360-A2A and 215 more. Effective Jan 13, 1977
- [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
- [AD 73-10-02](https://openairdocs.org/ad/73-10-02): Bendix Fuel Injectors · Bendix Fuel Injectors, AIO-320-A1A, AIO-320-A1B and 88 more. Effective May 16, 1973
- [AD 69-08-09](https://openairdocs.org/ad/69-08-09): Lycoming Engines IO-540-G1A5. Effective Apr 23, 1969
- [AD 66-06-03](https://openairdocs.org/ad/66-06-03): Connecting Rod Assemblies · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 317 more. Effective Jan 16, 1969
- [AD 67-22-06](https://openairdocs.org/ad/67-22-06): Fuel Injectors · Lycoming Engines HIO-360-A1A, HIO-360-B1A, HIO-360-B1B and 28 more. Effective Aug 9, 1967
- [AD 66-20-04](https://openairdocs.org/ad/66-20-04): Oil Filter Adapter Gasket · Lycoming Engines IO-320-A1A, IO-320-A2A, IO-320-B1A and 121 more. Effective Aug 27, 1966
- [AD 64-16-05](https://openairdocs.org/ad/64-16-05): AC Pumps · Lycoming Engines HIO-360-B1A, HIO-360-B1B, IO-320-B1A and 86 more. Effective Jul 10, 1964
- [AD 63-14-03](https://openairdocs.org/ad/63-14-03): Oil Pump Drive Shaft · Lycoming Engines IO-540-A1A5, IO-540-B1A5, IO-540-B1B5 and 21 more. Effective Jul 6, 1963

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 2008-19-05](https://openairdocs.org/ad/2008-19-05) (historical): Parallel Valve'' reciprocating engines · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 262 more. Effective Oct 20, 2008
- [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 2002-23-06](https://openairdocs.org/ad/2002-23-06) (historical): Crankshaft gear retaining bolts · Textron Lycoming, AVCO AEIO-540, AEIO-540-D4A5, AEIO-540-D4B5 and 46 more. Effective Nov 19, 2002
- [AD 2002-20-51](https://openairdocs.org/ad/2002-20-51) (historical): Crankshaft gear retaining bolts · Textron Lycoming, AVCO AEIO-540, IO-540 Series (all), LTIO-540-F2BD and 39 more
- [AD 2000-18-53](https://openairdocs.org/ad/2000-18-53) (historical): Oil Filter Converter Plate Gaskets · Textron Lycoming, AVCO AEIO-540, IO-360-A1B6D, IO-360-A1D6D and 73 more
- [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
- [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) (15)

- [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-08-26R3](https://openairdocs.org/saib/NE-08-26R3): Magneto/Distributor. Issued Mar 31, 2011
- [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-08-26R1](https://openairdocs.org/saib/NE-08-26R1) (historical): Dual Magnetos. Issued Jul 8, 2008
- [SAIB NE-08-32](https://openairdocs.org/saib/NE-08-32) (historical): Propeller Governor Set Screw. Issued Jul 3, 2008
- [SAIB NE-05-89](https://openairdocs.org/saib/NE-05-89): . Issued Sep 30, 2005
- [SAIB NE-05-40](https://openairdocs.org/saib/NE-05-40): . Issued Mar 18, 2005
- [SAIB NE-03-18](https://openairdocs.org/saib/NE-03-18): . Issued Jan 22, 2003
- [SAIB NE-03-12](https://openairdocs.org/saib/NE-03-12): . Issued Dec 30, 2002
- [SAIB NE-01-37](https://openairdocs.org/saib/NE-01-37): . Issued Aug 16, 2001
- [SAIB NE-01-22](https://openairdocs.org/saib/NE-01-22): . Issued May 11, 2001

## Registered aircraft (4,219, first 50)

- [N1004D](https://openairdocs.org/aircraft/N1004D): [Giezen Jurgen J](https://openairdocs.org/faa-owner/GIEZEN%20JURGEN%20J), [Fairfax, VA](https://openairdocs.org/faa-place/VA/Fairfax), S/N 26001C
- [N100AE](https://openairdocs.org/aircraft/N100AE): [Spencer, NE](https://openairdocs.org/faa-place/NE/Spencer), built 1978, S/N 32R-7985058, Sale reported, pending cancellation
- [N100DD](https://openairdocs.org/aircraft/N100DD): [Cook Allen J](https://openairdocs.org/faa-owner/COOK%20ALLEN%20J), [Aurora, CO](https://openairdocs.org/faa-place/CO/Aurora), built 1948, S/N NAV41518
- [N100EE](https://openairdocs.org/aircraft/N100EE): [Concho Aviation LLC](https://openairdocs.org/faa-owner/CONCHO%20AVIATION%20LLC), [Sterling City, TX](https://openairdocs.org/faa-place/TX/Sterling%20City), built 2006, S/N 11028
- [N100JG](https://openairdocs.org/aircraft/N100JG): [Club Cherokee Inc](https://openairdocs.org/faa-owner/CLUB%20CHEROKEE%20INC), [Crystal, MN](https://openairdocs.org/faa-place/MN/Crystal), built 1988, S/N 3213019
- [N100JV](https://openairdocs.org/aircraft/N100JV): [Kremers Gary](https://openairdocs.org/faa-owner/KREMERS%20GARY), [Zeeland, MI](https://openairdocs.org/faa-place/MI/Zeeland), built 2012, S/N 40992
- [N100LW](https://openairdocs.org/aircraft/N100LW): [N100lw LLC](https://openairdocs.org/faa-owner/N100LW%20LLC), [Hickory, NC](https://openairdocs.org/faa-place/NC/Hickory), built 1980, S/N 32-8006091
- [N100PB](https://openairdocs.org/aircraft/N100PB): [Doobie Air LLC](https://openairdocs.org/faa-owner/DOOBIE%20AIR%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1978, S/N 61P05847963257
- [N1012Y](https://openairdocs.org/aircraft/N1012Y): [Nelson Susan P](https://openairdocs.org/faa-owner/NELSON%20SUSAN%20P), [Kirkland, WA](https://openairdocs.org/faa-place/WA/Kirkland), built 2005, S/N 18281543
- [N1014B](https://openairdocs.org/aircraft/N1014B): [Clark Joseph C](https://openairdocs.org/faa-owner/CLARK%20JOSEPH%20C), [Avondale, PA](https://openairdocs.org/faa-place/PA/Avondale), built 2025, S/N 42904
- [N1014Q](https://openairdocs.org/aircraft/N1014Q): [Lawler Thomas O](https://openairdocs.org/faa-owner/LAWLER%20THOMAS%20O), [Lava Hot Springs, ID](https://openairdocs.org/faa-place/ID/Lava%20Hot%20Springs), built 1996, S/N 23029C
- [N1016N](https://openairdocs.org/aircraft/N1016N): [Drln Aviation LLC](https://openairdocs.org/faa-owner/DRLN%20AVIATION%20LLC), [Charlotte, NC](https://openairdocs.org/faa-place/NC/Charlotte), built 2005, S/N 18281547
- [N101AF](https://openairdocs.org/aircraft/N101AF): [State Of Louisiana](https://openairdocs.org/faa-owner/STATE%20OF%20LOUISIANA), [Baton Rouge, LA](https://openairdocs.org/faa-place/LA/Baton%20Rouge), built 2003, S/N 18281181
- [N101DR](https://openairdocs.org/aircraft/N101DR): [Shaheen Louis](https://openairdocs.org/faa-owner/SHAHEEN%20LOUIS), [Austin, TX](https://openairdocs.org/faa-place/TX/Austin), built 1978, S/N 32R-7885181
- [N101DW](https://openairdocs.org/aircraft/N101DW): [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 1976, S/N 32R-7680399
- [N101HH](https://openairdocs.org/aircraft/N101HH): [Elmhurst Holdings LLC](https://openairdocs.org/faa-owner/ELMHURST%20HOLDINGS%20LLC), [East Rochester, NY](https://openairdocs.org/faa-place/NY/East%20Rochester), built 1980, S/N 27-8054057
- [N101VB](https://openairdocs.org/aircraft/N101VB): built 1999, S/N 18280438
- [N101VR](https://openairdocs.org/aircraft/N101VR): [Dunn Thomas A](https://openairdocs.org/faa-owner/DUNN%20THOMAS%20A), [Fairhope, AL](https://openairdocs.org/faa-place/AL/Fairhope), built 1995, S/N 18023C
- [N101W](https://openairdocs.org/aircraft/N101W): [Cole-Tac LLC](https://openairdocs.org/faa-owner/COLE-TAC%20LLC), [Rapid City, SD](https://openairdocs.org/faa-place/SD/Rapid%20City), built 1980, S/N 32R-8013087
- [N1025N](https://openairdocs.org/aircraft/N1025N): [Good Aviation LLC](https://openairdocs.org/faa-owner/GOOD%20AVIATION%20LLC), [Oshkosh, WI](https://openairdocs.org/faa-place/WI/Oshkosh), built 1996, S/N 23026C
- [N102FM](https://openairdocs.org/aircraft/N102FM): built 2015, S/N 001
- [N102LP](https://openairdocs.org/aircraft/N102LP): [Washington State Patrol](https://openairdocs.org/faa-owner/WASHINGTON%20STATE%20PATROL), [Olympia, WA](https://openairdocs.org/faa-place/WA/Olympia), built 2002, S/N 18281121
- [N102MA](https://openairdocs.org/aircraft/N102MA): [Squaw Creek Aviation LLC](https://openairdocs.org/faa-owner/SQUAW%20CREEK%20AVIATION%20LLC), [Dover, DE](https://openairdocs.org/faa-place/DE/Dover), S/N 18280100
- [N102MR](https://openairdocs.org/aircraft/N102MR): [Equipment Services Corp](https://openairdocs.org/faa-owner/EQUIPMENT%20SERVICES%20CORP), [Wahpeton, ND](https://openairdocs.org/faa-place/ND/Wahpeton), S/N 30020C
- [N1033C](https://openairdocs.org/aircraft/N1033C): [Huson Lee E](https://openairdocs.org/faa-owner/HUSON%20LEE%20E), [Port Townsend, WA](https://openairdocs.org/faa-place/WA/Port%20Townsend), built 1997, S/N 25012C
- [N1039P](https://openairdocs.org/aircraft/N1039P): [N1039p LLC](https://openairdocs.org/faa-owner/N1039P%20LLC), [Suwanee, GA](https://openairdocs.org/faa-place/GA/Suwanee), built 2005, S/N 18281566
- [N103AR](https://openairdocs.org/aircraft/N103AR): [Hd Outdoor Advs LLC](https://openairdocs.org/faa-owner/HD%20OUTDOOR%20ADVS%20LLC), [Coalgate, OK](https://openairdocs.org/faa-place/OK/Coalgate), built 2005, S/N 18281663
- [N103DJ](https://openairdocs.org/aircraft/N103DJ): [Chicoine Chris](https://openairdocs.org/faa-owner/CHICOINE%20CHRIS), [Williston, VT](https://openairdocs.org/faa-place/VT/Williston), S/N 50
- [N103NC](https://openairdocs.org/aircraft/N103NC): [State Of North Carolina](https://openairdocs.org/faa-owner/STATE%20OF%20NORTH%20CAROLINA), [Raleigh, NC](https://openairdocs.org/faa-place/NC/Raleigh), built 1999, S/N 18280647
- [N103PZ](https://openairdocs.org/aircraft/N103PZ): [Raging Thermal Sky Sports LLC](https://openairdocs.org/faa-owner/RAGING%20THERMAL%20SKY%20SPORTS%20LLC), [Brighton, CO](https://openairdocs.org/faa-place/CO/Brighton), built 2005, S/N 25102C
- [N103RR](https://openairdocs.org/aircraft/N103RR): [Lancaster Flyers LLC](https://openairdocs.org/faa-owner/LANCASTER%20FLYERS%20LLC), [Fenwick Island, DE](https://openairdocs.org/faa-place/DE/Fenwick%20Island), built 1979, S/N 32-7940097
- [N103SJ](https://openairdocs.org/aircraft/N103SJ): [Barnick Air Holdings LLC](https://openairdocs.org/faa-owner/BARNICK%20AIR%20HOLDINGS%20LLC), [Santa Barbara, CA](https://openairdocs.org/faa-place/CA/Santa%20Barbara), built 2000, S/N 20608101
- [N103TX](https://openairdocs.org/aircraft/N103TX): [Williams Bradley H Jr](https://openairdocs.org/faa-owner/WILLIAMS%20BRADLEY%20H%20JR), [Charleston, SC](https://openairdocs.org/faa-place/SC/Charleston), built 2001, S/N 18280984
- [N103U](https://openairdocs.org/aircraft/N103U): [Rankin Kenneth](https://openairdocs.org/faa-owner/RANKIN%20KENNETH), [Pinellas Park, FL](https://openairdocs.org/faa-place/FL/Pinellas%20Park), built 1986, S/N 585
- [N1041H](https://openairdocs.org/aircraft/N1041H): [Century Flight Systems Inc](https://openairdocs.org/faa-owner/CENTURY%20FLIGHT%20SYSTEMS%20INC), [Mineral Wells, TX](https://openairdocs.org/faa-place/TX/Mineral%20Wells), built 1977, S/N 32R-7780125
- [N1044L](https://openairdocs.org/aircraft/N1044L): [Fitch Mark](https://openairdocs.org/faa-owner/FITCH%20MARK), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), built 1996, S/N 25009C
- [N1044N](https://openairdocs.org/aircraft/N1044N): [Maule Flight Inc](https://openairdocs.org/faa-owner/MAULE%20FLIGHT%20INC), [Moultrie, GA](https://openairdocs.org/faa-place/GA/Moultrie), built 1996, S/N 25006C
- [N10457](https://openairdocs.org/aircraft/N10457): [Six Ten Ventures LLC](https://openairdocs.org/faa-owner/SIX%20TEN%20VENTURES%20LLC), [Cedar Hill, TX](https://openairdocs.org/faa-place/TX/Cedar%20Hill), built 2003, S/N 20608194
- [N1045Y](https://openairdocs.org/aircraft/N1045Y): [Rovers Bradley S](https://openairdocs.org/faa-owner/ROVERS%20BRADLEY%20S), [Chazy, NY](https://openairdocs.org/faa-place/NY/Chazy), built 2005, S/N 18281571
- [N1047U](https://openairdocs.org/aircraft/N1047U): [Stueve'S Certified Organic Dairy](https://openairdocs.org/faa-owner/STUEVE'S%20CERTIFIED%20ORGANIC%20DAIRY), [Oakdale, CA](https://openairdocs.org/faa-place/CA/Oakdale), built 1998, S/N 23043C
- [N104AB](https://openairdocs.org/aircraft/N104AB): [Peterson Kevin D](https://openairdocs.org/faa-owner/PETERSON%20KEVIN%20D), [Peoria, AZ](https://openairdocs.org/faa-place/AZ/Peoria), built 1998, S/N 18280280
- [N104AL](https://openairdocs.org/aircraft/N104AL): [Dinardi Allen J](https://openairdocs.org/faa-owner/DINARDI%20ALLEN%20J), [Jacksonville, OR](https://openairdocs.org/faa-place/OR/Jacksonville), built 2010, S/N 40369
- [N104E](https://openairdocs.org/aircraft/N104E): [Haas Bruce F](https://openairdocs.org/faa-owner/HAAS%20BRUCE%20F), [Lynden, WA](https://openairdocs.org/faa-place/WA/Lynden), S/N 586
- [N104GK](https://openairdocs.org/aircraft/N104GK): [Indigo Bunting Aviation LLC](https://openairdocs.org/faa-owner/INDIGO%20BUNTING%20AVIATION%20LLC), [Morristown, NJ](https://openairdocs.org/faa-place/NJ/Morristown), built 1977, S/N 32R7780461
- [N104LD](https://openairdocs.org/aircraft/N104LD): [Masys Daniel R](https://openairdocs.org/faa-owner/MASYS%20DANIEL%20R), [Lincoln, CA](https://openairdocs.org/faa-place/CA/Lincoln), built 2007, S/N 40448
- [N104LJ](https://openairdocs.org/aircraft/N104LJ): [Feldhousen Larry A](https://openairdocs.org/faa-owner/FELDHOUSEN%20LARRY%20A), [Burlington, CO](https://openairdocs.org/faa-place/CO/Burlington), built 2005, S/N 40109
- [N104ME](https://openairdocs.org/aircraft/N104ME): [Mathis Mark D](https://openairdocs.org/faa-owner/MATHIS%20MARK%20D), [Richmond, TX](https://openairdocs.org/faa-place/TX/Richmond), built 2005, S/N 40108
- [N104MF](https://openairdocs.org/aircraft/N104MF): [Eccker Donald E](https://openairdocs.org/faa-owner/ECCKER%20DONALD%20E), [Ramona, CA](https://openairdocs.org/faa-place/CA/Ramona), built 2016, S/N 40834
- [N104RG](https://openairdocs.org/aircraft/N104RG): [Weiss Elliott](https://openairdocs.org/faa-owner/WEISS%20ELLIOTT), [Fresno, TX](https://openairdocs.org/faa-place/TX/Fresno), S/N 004
- [N1051Z](https://openairdocs.org/aircraft/N1051Z): [Dranttel Timothy John](https://openairdocs.org/faa-owner/DRANTTEL%20TIMOTHY%20JOHN), [Fuquay Varina, NC](https://openairdocs.org/faa-place/NC/Fuquay%20Varina), built 1998, S/N 25021C

All 4,219: https://openairdocs.org/engine/lycoming-io-540-series/aircraft.md

## NTSB investigations (1,057, newest 50)

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 CEN26LA317](https://openairdocs.org/ntsb/CEN26LA317), Sep 13, 2026: Robinson Helicopter R44 II (N7527L), Natchez, MS, substantial damage, investigation ongoing
- [NTSB WPR26LA306](https://openairdocs.org/ntsb/WPR26LA306), Aug 15, 2026: Aero Rampart Steen Skybolt (N32DA), Roseburg, OR, substantial damage, investigation ongoing
- [NTSB ERA26LA296](https://openairdocs.org/ntsb/ERA26LA296), Aug 9, 2026: Piper PA32 (N3011X), Dawsonville, GA, investigation ongoing
- [NTSB ERA26FA271](https://openairdocs.org/ntsb/ERA26FA271), Jul 14, 2026: Smith Aerostar 601 (N800AA), Lake Clear, NY, destroyed, 3 fatal, investigation ongoing
- [NTSB ERA26LA244](https://openairdocs.org/ntsb/ERA26LA244), Jun 20, 2026: Cessna 182S (N7270H), Naples, FL, substantial damage, investigation ongoing
- [NTSB WPR26LA228](https://openairdocs.org/ntsb/WPR26LA228), Jun 16, 2026: Lancair Legacy 2000 (N84BZ), Los Angeles, CA, substantial damage, investigation ongoing
- [NTSB WPR26LA200](https://openairdocs.org/ntsb/WPR26LA200), May 21, 2026: Maule M-7-260C (N261MM), Kanab, UT, substantial damage. Probable cause: The pilot’s failure to maintain directional control during the landing roll with gusting crosswind conditions.
- [NTSB GAA26WA181](https://openairdocs.org/ntsb/GAA26WA181), Apr 29, 2026: Piper PA-23-250 (N63941), Cumayasa, La Romana, Dominican Republic, incident, substantial damage
- [NTSB ANC26LA029](https://openairdocs.org/ntsb/ANC26LA029), Apr 3, 2026: Maule M-7-235 (N93ML), Wasilla, AK, substantial damage, investigation ongoing
- [NTSB CEN26FA147](https://openairdocs.org/ntsb/CEN26FA147), Mar 25, 2026: Experimental Homebuilt Airshark (N220AS), Statesboro, GA, substantial damage, 1 fatal, investigation ongoing
- [NTSB CEN26LA148](https://openairdocs.org/ntsb/CEN26LA148), Mar 24, 2026: Robinson Helicopter R44 II (N233JD), Stonewall, TX, substantial damage, investigation ongoing
- [NTSB CEN26LA122](https://openairdocs.org/ntsb/CEN26LA122), Feb 21, 2026: Cessna 182 (N7276V), Golden, MO, substantial damage. Probable cause: The pilot’s failure to establish stabilized approach that would have allowed the airplane to touch down with adequate runway remaining. Contributing to the accident was the pilot’s failure to execute…
- [NTSB WPR26FA097](https://openairdocs.org/ntsb/WPR26FA097), Feb 5, 2026: Socata TB21 (N967WM), Prescott, AZ, destroyed, 1 fatal, investigation ongoing
- [NTSB CEN26LA101](https://openairdocs.org/ntsb/CEN26LA101), Jan 29, 2026: Robinson Helicopter R44 II (N916VK), Sullivan, MO, destroyed. Probable cause: The pilot’s failure to maintain clearance from powerlines during low-level operations.
- [NTSB WPR26LA083](https://openairdocs.org/ntsb/WPR26LA083), Jan 19, 2026: Robinson R44 (N74730), Parkman, WY, substantial damage. Probable cause: The pilots’ failure to maintain separation while conducting air work in a common operational area. Contributing to the accident was the pilots’ divided attention associated with the mission activity…
- [NTSB WPR26LA084](https://openairdocs.org/ntsb/WPR26LA084), Jan 17, 2026: Maule M-7-235B (N116G), Cody, WY, substantial damage. Probable cause: The pilot's failure to maintain directional control during landing roll.
- [NTSB ERA26LA086](https://openairdocs.org/ntsb/ERA26LA086), Dec 12, 2025: Pipistrel D O O Panthera X152 (N37RR), Atlanta, GA, substantial damage. Probable cause: The pilot’s failure to extend the landing gear before landing.
- [NTSB WPR26LA020](https://openairdocs.org/ntsb/WPR26LA020), Oct 17, 2025: Piper PA-23-250 (N2345R), Condon, MT, substantial damage, 3 fatal, investigation ongoing
- [NTSB ERA26LA013](https://openairdocs.org/ntsb/ERA26LA013), Oct 4, 2025: Cessna T182T (N423TA), Venice, FL, substantial damage. Probable cause: The pilot’s failure to maintain directional control while taxiing in gusty, quartering tailwind conditions.
- [NTSB CEN25LA398](https://openairdocs.org/ntsb/CEN25LA398), Sep 27, 2025: Piper PA-60-601P (N3635A), Del Norte, CO, substantial damage. Probable cause: The loss of directional control during landing roll due to a flat tire.
- [NTSB ERA25LA363](https://openairdocs.org/ntsb/ERA25LA363), Sep 23, 2025: Piper PA-32R-300 (N47630), White Plains, NY, substantial damage. Probable cause: The pilot’s failure to maintain proper glidepath during a night visual approach, which resulted in a collision with the runway lighting system. Contributing to the outcome was the pilot’s momentary…
- [NTSB ERA25LA358](https://openairdocs.org/ntsb/ERA25LA358), Sep 20, 2025: Cessna 182 (N1176R), Blue Ridge, GA, substantial damage. Probable cause: The pilot’s failure to obtain the proper touchdown point, which resulted in a runway overrun.
- [NTSB CEN25LA387](https://openairdocs.org/ntsb/CEN25LA387), Sep 18, 2025: Piper PA-32R-301 (N318JM), Oxford, MS, substantial damage. Probable cause: The pilot’s exceedance of the airplane’s critical angle of attack during the initial takeoff climb, which resulted in an aerodynamic stall and impact with terrain.
- [NTSB CEN25LA372](https://openairdocs.org/ntsb/CEN25LA372), Sep 9, 2025: Cessna 182T (N357CP), Seymour, IN, substantial damage. Probable cause: The flight instructor’s improper landing flare which resulted in a bounced landing and loss of control.
- [NTSB ERA25LA325](https://openairdocs.org/ntsb/ERA25LA325), Aug 31, 2025: Cessna 182 (N628FN), Lebanon, OH, substantial damage. Probable cause: The pilot’s failure to maintain directional control of the airplane during takeoff, which resulted in a runway excursion and collision with a sign.
- [NTSB ANC25LA099](https://openairdocs.org/ntsb/ANC25LA099), Aug 29, 2025: Robinson Helicopter R44 II (N74435), Petersville, AK, substantial damage. Probable cause: The pilot’s exceedance of the helicopter’s available power while landing in a remote confined area, which resulted in rotor droop and a hard landing.
- [NTSB ERA25LA298](https://openairdocs.org/ntsb/ERA25LA298), Aug 12, 2025: Paschal JR Roy E Velocity XL RG (N7778M), Columbia, SC, substantial damage. Probable cause: A landing gear collapse during landing.
- [NTSB ERA25LA215](https://openairdocs.org/ntsb/ERA25LA215), Jun 1, 2025: Piper PA32-300 (N2242Z), Branford, CT, substantial damage. Probable cause: Maintenance personnel's improper installation and inspection of the crankshaft gear bolt during major overhaul, which resulted in the crankshaft gear disengaging from the accessory gears which led to…
- [NTSB WPR25FA147](https://openairdocs.org/ntsb/WPR25FA147), May 3, 2025: Paul Berkovitz Vans RV-10 (N626PB), Simi Valley, CA, destroyed, 2 fatal, investigation ongoing
- [NTSB WPR25LA136](https://openairdocs.org/ntsb/WPR25LA136), Apr 19, 2025: D'Apuzzo Senior Aero Sport (N321WC), Phoenix, AZ, substantial damage, investigation ongoing
- [NTSB WPR25LA118](https://openairdocs.org/ntsb/WPR25LA118), Mar 25, 2025: Robinson Helicopter R44 II (N7530U), Hobbs, NM, substantial damage. Probable cause: The student pilot’s loss of directional control during a hover, which resulted in an impact with terrain.
- [NTSB ERA25LA102](https://openairdocs.org/ntsb/ERA25LA102), Jan 20, 2025: Daniel A Robinson High 6 Berkut 540 (N976DR), Orlando, FL, substantial damage. Probable cause: The pilot’s failure to verify the canopy latches were in the locked position prior to takeoff.
- [NTSB CEN25LA073](https://openairdocs.org/ntsb/CEN25LA073), Jan 8, 2025: Robinson Helicopter R44 II (N430JM), Buras, LA, substantial damage. Probable cause: The pilot’s failure to maintain control during a hover taxi with a quartering tailwind.
- [NTSB ANC25LA015](https://openairdocs.org/ntsb/ANC25LA015), Jan 4, 2025: Gippsaero PTY GA8 (N916RK), Nightmute, AK, substantial damage. Probable cause: The pilot’s loss of directional control while taxiing in gusting wind conditions.
- [NTSB CEN25LA059](https://openairdocs.org/ntsb/CEN25LA059), Dec 11, 2024: Cessna 182T (N127SL), Pearland, TX, substantial damage. Probable cause: The AA-5 pilot’s failure to maintain separation from the 182T during approach and landing, which resulted in a ground collision during the landing roll. Contributing to the accident was the failure…
- [NTSB CEN25FA019](https://openairdocs.org/ntsb/CEN25FA019), Oct 21, 2024: Robinson R44 (N881KE), Houston, TX, destroyed, 4 fatal. Probable cause: The pilot’s failure to maintain clearance from a lighted radio tower during a visual night flight. Contributing to the accident was the air traffic controller’s failure to issue a safety alert…
- [NTSB CEN25LA018](https://openairdocs.org/ntsb/CEN25LA018), Oct 17, 2024: Piper PA-32R-301 (N81481), Van, TX, substantial damage. Probable cause: The mechanic’s improper maintenance of the engine’s air induction scat duct, which collapsed during the flight and resulted in a loss of engine power.
- [NTSB CEN24LA378](https://openairdocs.org/ntsb/CEN24LA378), Sep 30, 2024: Piper PA32 (N31407), Caro, MI, substantial damage. Probable cause: A total loss of engine power due to maintenance personnel’s failure to properly tighten the fuel supply line B-nut at the fuel servo.
- [NTSB CEN24LA376](https://openairdocs.org/ntsb/CEN24LA376), Sep 30, 2024: Piper PA-32-300 (N2032M), Pierz, MN, substantial damage. Probable cause: The pilot’s inadequate fuel management which resulted in the loss of engine power due to fuel starvation.
- [NTSB GAA24WA285](https://openairdocs.org/ntsb/GAA24WA285), Sep 12, 2024: Piper PA-23-250 (N555MH), Nassau, Bahamas, substantial damage, 2 fatal
- [NTSB ANC24LA055](https://openairdocs.org/ntsb/ANC24LA055), Jun 26, 2024: Gippsland GA-8 (N13AV), Tuntutuliak, AK, substantial damage. Probable cause: The pilot's failure to maintain directional control during takeoff after an encounter with a gusting wind, which resulted in a wing strike.
- [NTSB WPR24LA166](https://openairdocs.org/ntsb/WPR24LA166), Jun 1, 2024: Thomas J Spencer RV-10 (N90VT), Snohomish, WA, substantial damage. Probable cause: The pilot’s failure to attain a proper touchdown point during landing with a tailwind which resulted in a runway overrun.
- [NTSB ERA24LA240](https://openairdocs.org/ntsb/ERA24LA240), Jun 1, 2024: Aero Commander Callair A-9B (N7650V), Zebulon, NC, substantial damage. Probable cause: A total loss of engine power while maneuvering due to fuel starvation.
- [NTSB WPR24LA146](https://openairdocs.org/ntsb/WPR24LA146), May 9, 2024: Robert Sterling 4P (N78GP), Lake Havasu City, AZ, substantial damage. Probable cause: A loss of engine power during initial climb due to fuel vapor lock. Contributing to the accident was the incorrect installation of the ancillary fuel supply system components.
- [NTSB ERA24FA176](https://openairdocs.org/ntsb/ERA24FA176), Apr 12, 2024: Piper PA-32R-301 (N9236J), Knoxville, TN, destroyed, 1 fatal. Probable cause: The pilot’s decision to depart into an area of instrument meteorological and icing conditions, which resulted in loss of airplane control and a subsequent in-flight breakup.
- [NTSB CEN24LA155](https://openairdocs.org/ntsb/CEN24LA155), Apr 11, 2024: Piper PA-32-301 (N651ED), Sullivan, MO, substantial damage. Probable cause: A bearing failure that resulted in fatigue failure of the crankshaft and a subsequent total loss of engine power.
- [NTSB WPR24LA111](https://openairdocs.org/ntsb/WPR24LA111), Mar 14, 2024: Piper Aerostar 601P (N1SS), Grass Valley, CA, substantial damage. Probable cause: The pilot’s failure to maintain directional control in a gusting wind condition.
- [NTSB ANC24LA013](https://openairdocs.org/ntsb/ANC24LA013), Feb 11, 2024: Robinson Helicopter R44 II (N74868), Glacier View, AK, substantial damage. Probable cause: A sudden stoppage of the tail rotor for unknown reasons, which resulted in the tortional overload failure of the tail rotor driveshaft.
- [NTSB CEN24LA081](https://openairdocs.org/ntsb/CEN24LA081), Dec 29, 2023: Maule M-6-235 (N71MS), Beaumont, TX, substantial damage. Probable cause: The pilot’s failure to maintain directional control during landing in crosswind conditions, which resulted in a ground loop on the runway.
- [NTSB ERA24LA042](https://openairdocs.org/ntsb/ERA24LA042), Nov 18, 2023: Robinson Helicopter R44 II (N789GR), Ogdensburg, NY, substantial damage. Probable cause: The loss of control of the helicopter during taxi, which resulted in rollover.

All 1,057: https://openairdocs.org/engine/lycoming-io-540-series/ntsb.md

## FAA accident and incident reports (2,073, 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 20260909013199I](https://openairdocs.org/incident/20260909013199I), Sep 9, 2026: Piper PA-32RT-300 (N2217E), Tiffin, OH, Minor damage. The pilot in command (PIC) of the aircraft and maintenance service manager departed runway 24 on a routine return to service flight after completion of an…
- [Accident 20260815011239A](https://openairdocs.org/incident/20260815011239A), Aug 15, 2026: Aero Rampart STEEN SKYBOLT (N32DA), Roseburg, OR, Substantial damage. On 08/15/2026, the pilot departed at ~1500L on a proficiency flight. Field weather was VFR. Winds were 020/12 favoring runway 34 with a ~7 knot crosswind…
- [Incident 20260723008309I](https://openairdocs.org/incident/20260723008309I), Jul 23, 2026: Cessna 182T (N411LP), Milwaukee, WI, Minor damage. Pilot left kosh and proceeded to kmke for a fuel stop. Pilot set aircraft down and proceeded to ramp. Pilot landed slightly on the right gear before the left.…
- [Incident 20260720010099I](https://openairdocs.org/incident/20260720010099I), Jul 20, 2026: Piper PA-32R-301 (N3569X), Springfield, OH, Minor damage. The pilot reported while landing at Springfield-Beckley airport (sgh), the gear was selected down and the gear indicated down and locked with 3 green…
- [Incident 20260614009509I](https://openairdocs.org/incident/20260614009509I), Jun 14, 2026: Piper PA-23-250 (N2562M), Williston, ND, Minor damage. Pilot landed at Williston airport and reported that the landing gear collapsed after landing just before he tried to turn off the runway. The landing gear was…
- [Incident 20260612006889I](https://openairdocs.org/incident/20260612006889I), Jun 12, 2026: Piper PA-32RT-300 (N9585C), Locust Grove, GA, Minor damage. A Piper PA-32RT-300 departed kdnn at approximently 1030 on 12 June, 2026. The aircraft, which was operated by a single pilot with no passengers on board, began…
- [Accident 20260521006439A](https://openairdocs.org/incident/20260521006439A), May 21, 2026: Maule M-7-260C (N261MM), Kanab, UT, Substantial damage. Pilot attempted to land at airport with crosswind at 10 knots gusting 19. During touchdown, wind gust pushed aircraft from centerline. Pilot's flight control…
- [Incident 20260511004619I](https://openairdocs.org/incident/20260511004619I), May 11, 2026: Lake Aircraft Inc LA250 (N83VV), Palo Alto, CA, Minor damage. Aircraft VFR arrival to kpao, flying the profile of GPS 31 approach (straight it to 31). Pilot said normal pre-landing checks completed, gear down, green…
- [Incident 20260429004789I](https://openairdocs.org/incident/20260429004789I), Apr 29, 2026: Piper PA-32RT-300 (N2214F), Lehighton, PA, Minor damage. He (pilot) taxied out after fueling and performed all the required pre takeoff checks, he started a normal takeoff roll and around 80 - 82 knots, halfway down…
- [Incident 20260419003179I](https://openairdocs.org/incident/20260419003179I), Apr 19, 2026: Cessna 182T (N2027P), Findlay, OH, Minor damage. The aircraft landed RWY25 at kfdy. The pilot stated that when he touched down, the aircraft's right strut pulled to the right, and he exited the edge of the…
- [Incident 20260417004029I](https://openairdocs.org/incident/20260417004029I), Apr 17, 2026: Piper PA-24-260 (N9364P), Raleigh, NC, Minor damage. The aircraft, a 1969 Piper PA-24-260, departed from person county airport on Friday, April 17, at 12:13 EST with a single pilot/operator. Shortly after…
- [Incident 20260404006919I](https://openairdocs.org/incident/20260404006919I), Apr 4, 2026: Commander Aircraft 114B (N114KJ), Allentown, PA, No damage. Approximately 25 minutes into the flight at a cruise altitude of 6,000 feet the engine had a sudden loss of power. The pilot stated the engine appeared to be…
- [Accident 20260403003839A](https://openairdocs.org/incident/20260403003839A), Apr 3, 2026: Maule M-7-235 (N93ML), Wasilla, AK, Substantial damage. At approximately 1:00 pm Alaska local time, a Maule M7-235 aircraft attempted to take off from 6AK9 airport under snow-packed conditions. The ambient…
- [Accident 20260324003489A](https://openairdocs.org/incident/20260324003489A), Mar 24, 2026: Robinson Helicopter Company R44 II (N233JD), Fredericksburg, TX, Substantial damage. On March 24, 2026, at approximately 0930 local time, a Robinson R44 ii helicopter was substantially damaged during an accident that occurred on a private ranch…
- [Incident 20260221013059I](https://openairdocs.org/incident/20260221013059I), Feb 21, 2026: Cessna 182S (N7276V), Golden, MO, Minor damage. Aircrafty [privacy data omitted], was on a personal flight from kbvt to MO32 for a personal flight. Trip duration was approximately 24 minutes. PIC obtained wx…
- [Accident 20260204000519A](https://openairdocs.org/incident/20260204000519A), Feb 4, 2026: Socata TB21 (N967WM), Prescott, AZ, Destroyed, 1 fatal. On February 4, 2026, at about 2000 local time, [privacy data omitted] crashed while turning to approach for landing at Prescott Arizona (prc). The Socata TBN21…
- [Accident 20260129000929A](https://openairdocs.org/incident/20260129000929A), Jan 29, 2026: Robinson Helicopter Company R44 II (N916VK), Sullivian, MO, Substantial damage. The airman had completed arial survey operations and was en route to conduct a passenger exchange. The airman was operating approximately 40 feet above the…
- [Accident 20260119000311A](https://openairdocs.org/incident/20260119000311A), Jan 19, 2026: Robinson Helicopter Company R44 II (N74730), Sheridan, WY, Substantial damage. R-44 #1 rotor struck R-44 #2 tail rotor mid air. Both aircraft made an emergency landing. Minor damage to R-44 #1 substantial damage to R-44 #2
- [Accident 20260116000159A](https://openairdocs.org/incident/20260116000159A), Jan 16, 2026: Maule M-7-235B (N116G), Cody, WY, Substantial damage. Pilot lost control when landing aircraft.
- [Incident 20251227021379I](https://openairdocs.org/incident/20251227021379I), Dec 27, 2025: Piper PA-23-250 (N27CY), Punta Gorda, FL, Minor damage. Tower was advised of a possible prop strike by incident aircraft. The aircraft was seen in what appenrcd to be normal landing configuration on short final but…
- [Accident 20251212020799A](https://openairdocs.org/incident/20251212020799A), Dec 12, 2025: Pipistrel D O O PANTHERA X152 (N37RR), Atlanta, GA, Substantial damage. Admittedly, the pilot failed to lower the landing gear prior to contacing the runway.
- [Incident 20251123019639I](https://openairdocs.org/incident/20251123019639I), Nov 23, 2025: Piper PA-32R-301 (N9264A), Orlando, FL, Minor damage. Pilot statement: on November 23, 2025, I departed tamiami executive airport (ktmb) at approximately 10:00 a.m., en route to Orlando Executive Airport (korl),…
- [Incident 20251117020219I](https://openairdocs.org/incident/20251117020219I), Nov 17, 2025: Cessna 182S (N862PZ), Minneapolis, MN, Minor damage. The pilot was coming in for landing. The pilot stated that during the roundout and flare, not enough back pressure was applied to keep the nose off the ground…
- [Accident 20251017016219A](https://openairdocs.org/incident/20251017016219A), Oct 17, 2025: Piper PA-23-250 (N2345R), Condon, MT, Destroyed, 3 fatal. On October 17, 2025, the aircraft left billings international airport (kbil) at approximately 20:02Z en route to polson airport (8S1). In review of the weather…
- [Incident 20251016020069I](https://openairdocs.org/incident/20251016020069I), Oct 16, 2025: Piper PA-32-300 (N38276), Hurricane, UT, No damage. Aircraft was in straight and level flight approximately 10 miles west of Hurricane ut airport when engine began to sputter. Aircraft landed in a field with no…
- [Accident 20251004015759A](https://openairdocs.org/incident/20251004015759A), Oct 4, 2025: Cessna T182T (N423TA), Venice, FL, Substantial damage. While taxiing for departure on taxiway e aircraft Veered off the taxiway into a drainage ditch, resulting in Damage to the propeller, wheel pants, cowling,…
- [Incident 20251001019399I](https://openairdocs.org/incident/20251001019399I), Oct 1, 2025: Piper PA-32-300 (N44944), Oakland, MD, Minor damage. While departing ruway 27 at Garrett County Airport (2G4) Oakland, Maryland, the aircraft drifted left and contacted a runway light. Pilot stated the engine…
- [Accident 20250927019709A](https://openairdocs.org/incident/20250927019709A), Sep 27, 2025: Piper Aircraft Corporation PA-60-601P (N3635A), Del Norte, CO, Substantial damage. On September 27, 2025, a Piper PA60 aircraft lost directional control on rollout from landing on runway 24 at krcv due to an undetected tire failure that…
- [Accident 20250922017669A](https://openairdocs.org/incident/20250922017669A), Sep 22, 2025: Piper PA-32R-300 (N47630), Westchester, NY, Substantial damage. On September 22, 2025, at approximatley 2055HRS while on landing approach at hpn above mentioned aircraft did strike the 600FT, 400FT and 200FT and runway…
- [Accident 20250920021159A](https://openairdocs.org/incident/20250920021159A), Sep 20, 2025: Cessna 182T (N1176R), Blueridge, GA, Substantial damage. Pilot landed long touching down approximately mid field on a 3100 foot runway. Pilot applied firm braking but rolled past end of runway. Nose wheel dug into…
- [Accident 20250918014479A](https://openairdocs.org/incident/20250918014479A), Sep 18, 2025: Piper PA-32R-301 (N318JM), Oxford, MS, Substantial damage. Aircraft departed kuox runway 27 to northwest. Shortly after takeoff, aircraft veered to the right, struck the ground, and skidded into treeline.
- [Incident 20250915019459I](https://openairdocs.org/incident/20250915019459I), Sep 15, 2025: Cessna 182S (N258ME), Saint Charles C, MO, Minor damage. A Cessna 182S struck a powerline during landing at st Charles county regional airport/smartt field (kset). 1 person on board (solo), no reported injuries. The…
- [Accident 20250909017699A](https://openairdocs.org/incident/20250909017699A), Sep 9, 2025: Cessna 182T (N357CP), Seymour, IN, Substantial damage. The pilot entered the traffic pattern at Freeman flying field, Seymour, IN (kser) to demonstrate landings on runway 05. The accident occurred on the second…
- [Accident 20250831013609A](https://openairdocs.org/incident/20250831013609A), Aug 31, 2025: Cessna 182S (N628FN), Lebanon, OH, Substantial damage. The pilot stated he performed his preflight run ups and failed to deploy flaps. Per the POH the flap selection should have been 20 degrees with full fuel and 4…
- [Accident 20250829017419A](https://openairdocs.org/incident/20250829017419A), Aug 29, 2025: Robinson Helicopter Company R44 II (N74435), Petersville, AK, Substantial damage. Pilot was shuttling a group of 10 tour passengers from one ridge to another, both takeoff/landing areas approximately 3800 ft MSL. The first group to be…
- [Accident 20250812015479A](https://openairdocs.org/incident/20250812015479A), Aug 12, 2025: Paschal Jr Roy E VELOCITY XL RG (N7778M), West Columbia, SC, Substantial damage. Pilot took off from fort launderdale executive airport (fxe) landed on runway 11 at Columbia metropolitant airport (cae) at approximately 1330 on 12 July 2025.…
- [Incident 20250804019579I](https://openairdocs.org/incident/20250804019579I), Aug 4, 2025: Wright T/Bergin S VELCTY 173/RG-XL EL (N311DK), Sebastian, FL, Minor damage. On 8/4/2025 at approximately 1800L/2200Z the pilot in command of a Wright T/Bergin S velcty 173/RG-XL el just completed practicing maneuvers west of the…
- [Incident 20250718010029I](https://openairdocs.org/incident/20250718010029I), Jul 18, 2025: Piper PA-32-300 (N3678M), Greensboro, NC, Minor damage. Aircraft impacted a bird while on final for RW23L at gso airport damaging the right wing.
- [Incident 20250623007799I](https://openairdocs.org/incident/20250623007799I), Jun 23, 2025: Abel Michael S RV-10 (N943MA), Erie, PA, Minor damage. On June 20th, 2025, a vans RV-10 aircraft was flown from 29D, grove city airport, to eri, Erie international airport. The aircraft was secured on a tie down…
- [Incident 20250612017139I](https://openairdocs.org/incident/20250612017139I), Jun 12, 2025: Socata TB-20 TRINIDAD (N62286), North Las Vegas, NV, Minor damage. A TB-20 trinidad en route from ccr-las encountered a gear up landing vgt 12R due to gear deployment malfunction. During decent pilot noticed gear -in-transit…
- [Accident 20250601007049A](https://openairdocs.org/incident/20250601007049A), Jun 1, 2025: Piper PA-32-300 (N2242Z), Branford, CT, Destroyed. On June 1, 2025, at approximately 1026 EDT, a Piper PA-32-300 departed from igor I. Sikorsky memorial airport (kbdr) on an easterly heading. While flying at…
- [Incident 20250503005149I](https://openairdocs.org/incident/20250503005149I), May 3, 2025: Cessna 182T (N420FW), West Palm Beach, FL, Minor damage. Aircraft preflighted by PIC with no identified indications of window hinge failure. In cruise flight the window assembly departed the aircraft after PIC turned…
- [Accident 20250503004769A](https://openairdocs.org/incident/20250503004769A), May 3, 2025: Paul Berkovitz VANS RV-10 (N626PB), Simi Valley, CA, Destroyed, 2 fatal. The aircraft was on an IFR flight plan from wjf to cma. The pilot received a clearance from ATC to fly the RNAV (GPS) z rwy 26 approach into cma. The aircraft…
- [Incident 20250421008519I](https://openairdocs.org/incident/20250421008519I), Apr 21, 2025: Piper PA-32R-301 (N8188J), Troy, MI, Minor damage. On second landing attempt aircraft nose trunnion failed at touch down. Winds were 23022G30KT for runway 28.
- [Accident 20250419005169A](https://openairdocs.org/incident/20250419005169A), Apr 19, 2025: Chapin Wallace Hadley SENIOR AERO SPORT (N321WC), Phoenix, AZ, Substantial damage. On April 19, 2025, aircraft [privacy data omitted], an experimental amateur-built aircraft, experienced a loss of engine power while performing touch-and-go…
- [Incident 20250413007949I](https://openairdocs.org/incident/20250413007949I), Apr 13, 2025: Harmon John HARMON ROCKET 3 (N53HR), Pickens, SC, Minor damage. During landing roll-out, the pilot applied left and right brakes. The left brake failed causing the aircraft to veer to the right. When the aircraft was slowed…
- [Incident 20250413003429I](https://openairdocs.org/incident/20250413003429I), Apr 13, 2025: Piper PA-32-300 (N8133S), El Cajon, CA, Minor damage. On April 13, 2025, after landing on runway 27L at ksee in El Cajon, CA. Aircraft ran off runway striking airport sign causing minor damage to the aircraft.…
- [Incident 20250326002599I](https://openairdocs.org/incident/20250326002599I), Mar 26, 2025: Piper PA-23-250 (N6578A), Danbury, CT, Minor damage. On March 26, 2025, at approximately 1000 hours EST, a routine multi-engine training flight was being conducted at Danbury Municipal Airport (dxr). After…
- [Accident 20250325007519A](https://openairdocs.org/incident/20250325007519A), Mar 25, 2025: Robinson Helicopter Company R44 II (N7530U), Hobbs, NM, Substantial damage. On March 25, 2025, a Robinson R-44, while attempting to hover taxi, encountered a dynamic rollover and impacted terrain. The aircraft sustained substantial…
- [Accident 20250320002399A](https://openairdocs.org/incident/20250320002399A), Mar 20, 2025: Maule M-7-235C (N4244L), Birdsboro, PA, Substantial damage. Airman was approaching to land on his private airstrip and overflew the area to observe the windsock. He stated that the windsock was straight down indicating…

All 2,073: https://openairdocs.org/engine/lycoming-io-540-series/incidents.md

## Service difficulty reports (270, newest 50)

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

- [SDR 2026FA0000346](https://openairdocs.org/sdr/2026FA0000346), May 9, 2026: THRUST BUTTON. FAULTED. DURING MAJOR OVERHAUL INSTALLED SUPERIOR ROCKER SHAFT THRUST BUTTONS P/N SL12893.INFORMATION THAT WE RECEIVED STATED THAT FAULTY THRUST BUTTONS WILLFLOAT IN WAT
- [SDR 2026FA0000064](https://openairdocs.org/sdr/2026FA0000064), Jan 29, 2026: MAGNETO. FAILED. SLICK MAGNETO (MODEL NR 6350 S/N 15087263) FOLLOWER ARM OF CONTACTOR POINTS BROKE AFTER 76 HOURS SINCE NEW. THE BREAK OCCURRED AT THE BEND ON THE SIDE OF THE SP
- [SDR 2024FA0000575](https://openairdocs.org/sdr/2024FA0000575), Aug 7, 2024: MAGNETO. FAILED. MAGNETO FAILED
- [SDR 2024FA0000573](https://openairdocs.org/sdr/2024FA0000573), Aug 6, 2024: MAGNETO. FAILED. MAGNETO FAILED
- [SDR 2024FA0000577](https://openairdocs.org/sdr/2024FA0000577), Mar 14, 2024: MAGNETO. FAILED. MAGNETO FAILED
- [SDR 2024FA0000576](https://openairdocs.org/sdr/2024FA0000576), Mar 6, 2024: MAGNETO. FAILED. MAGNETO FAILED
- [SDR 2024FA0000571](https://openairdocs.org/sdr/2024FA0000571), Jan 24, 2024: MAGNETO. FAILED. MAGNETO FAILED
- [SDR 2024FA0000570](https://openairdocs.org/sdr/2024FA0000570), Dec 27, 2023: MAGNETO. FAILED. MAGNETO FAILED
- [SDR 2022FA0000697](https://openairdocs.org/sdr/2022FA0000697), Nov 14, 2022: STARTER. FIRE. A/C CAME IN FOR A 50HR OIL CHANGE AND ELECTRICAL ISSUES. FOUND THAT UPON INSTALL OF NEW ENGINE, REPAIR STATION REMOVED A JUMPER WIRE FROM A 12V STARTER AGAINST 
- [SDR 2023FA0000356](https://openairdocs.org/sdr/2023FA0000356), Sep 22, 2022: UNKNOWN. UNKNOWN. AIRCRAFT HAD BEEN PERFORMING MANEUVERS FOR 30 MINUTES. UPON APPROACH TO THE RUNWAY AT LOW ALTITUDE THE ENGINE BEGAN TO SPUTTER AND QUICKLY SHUT DOWN. PILOT MADE
- [SDR 2020FA0000430](https://openairdocs.org/sdr/2020FA0000430), Sep 2, 2020: RATCHET SYS. FAILED. ON FINAL FOR LANDING WITH 40 FLAPS SET IN, FLAPS SUDDENLY SNAPPED UP TO NEUTRAL, PLANE DROPPED QUICKLY. FLAP HANDLE WOULD WORK, BUT WOULD NOT CATCH. NO FLAP LAN
- [SDR 2020FA0000258](https://openairdocs.org/sdr/2020FA0000258), Feb 6, 2020: MAGNETO. ABNORMAL. LEFT MAGNETO WAS ONLY FIRING ON 3 OF THE 6 CYLINDERS. THE AIRCRAFT IS EQUIPPED WITH A G3I ELECTRONIC IGNITION SYSTEM THAT IS COUPLED TO THE MAGNETOS. THE LEFT M
- [SDR 17GR20191108901](https://openairdocs.org/sdr/17GR20191108901), Nov 8, 2019: VALVE. BENT. DURING 50 HOUR INSPECTION NO COMPRESSION ON CYLINDER 4. INSPECTION REVEALED STUCK EXHAUST VALVE AND BENT PUSH ROD.
- [SDR 2019FA0000251](https://openairdocs.org/sdr/2019FA0000251), Aug 9, 2019: MAGNETO. DEFECTIVE. MAGNETO ROTOR HAS TWO POLE MAGNET WITH FIXED LOCATION TO KEY OF ROTOR. KEY WAY IS WHAT ALIGNS THE ROTOR MAGNET POLE LOCATIONS TO THE ENGINE TIMING. MAGNET HAS S
- [SDR CA190621004](https://openairdocs.org/sdr/CA190621004), Jun 20, 2019: CIRCUIT BREAKER. DEFECTIVE. (CAN) ALTERNATOR 60 AMP.BREAKER WITH INTERNAL RESISTANCE (IN 28V OUT 8V) THIS WILL MAKE THE ALTERNATOR STOP CHARGING.... (TC# 20190621004)
- [SDR 2020FA0000124](https://openairdocs.org/sdr/2020FA0000124), Apr 30, 2019: SEAL. DEFORMED. THE OIL RELIEF SPRING WAS DEFORMED AND THE FILTER WAS OFF THE SEAL ALLOWING OIL TO BYPASS THE FILTER. THE ENGINE WAS PROBABLY STARTED WITH COLD OIL CAUSING THE 
- [SDR 2015FA0000521](https://openairdocs.org/sdr/2015FA0000521), Aug 28, 2015: STUD. WORN. THIS STUD HOLDS IDLER SHAFT WHICH SUPPORTS CRANKSHAFT IDLER GEAR. WHEN STUD FAILED, IDLER GEAR DISENGAGED FROM CAM AND CRANKSHAFT. THIS CAUSED ENGINE TO STOP.
- [SDR 2015FA0000501](https://openairdocs.org/sdr/2015FA0000501), Jul 30, 2015: BELT. BROKEN. ACFT LOST ALL ELECTRONIC POWER DUE TO ALTERNATOR BELT BREAKING. ALL NARROW BELTS ARE INSTALLED ON FACTORY INSTALLED AIR CONDITIONING SYS. ALTERNATOR DRIVE BELT 
- [SDR KC2R2014110300049](https://openairdocs.org/sdr/KC2R2014110300049), Nov 3, 2014: IMPULSE COUPLING. CRACKED. DURING INSPECTION OF IMPULSE COUPLINGS AT "500 HR INSPECTION" , IT WAS DISCOVERED THAT BOTH IMPULSE FLYWEIGHT BASE PLATES SHOWED CRACKS NEAT FLYWEIGHT AXLES. CR
- [SDR KC2R1029201449484](https://openairdocs.org/sdr/KC2R1029201449484), Oct 29, 2014: IMPULSE COUPLING. CRACKED. DURING A ROUTINE 500 HR INSPECTION OF THE MAGNETOS, FOUND BOTH IMPULSE COUPLINGS CRACKED AT HUB PLATE, NEAR FULL ADVANCE STOP NOTCH.
- [SDR JRUR2014FA0000510](https://openairdocs.org/sdr/JRUR2014FA0000510), Aug 29, 2014: POINTS. LOOSE. OWNER REPORTED HAVING TROUBLE WITH STARTING THE ACFT ENGINE WHILE IT WAS HOT. ACFT WAS JUST RETURNING FROM SERVICE AND WAS DUE A PHASE 1 INSPECTION. REMOVED BOT
- [SDR 9JNR20140307002](https://openairdocs.org/sdr/9JNR20140307002), Mar 7, 2014: TAILPIPE. UNDERSIZE. WHILE PERFORMING AD 2013-10-04 TO PREVENT POSSIBILITY OF AN IN-FLIGHT POWER PLANT FIRE DUE TO AN EXHAUST SYSTEM FAILURE ON N1188V A PA-31-350, THE RT ENGINE TUR
- [SDR CA131104012](https://openairdocs.org/sdr/CA131104012), Nov 1, 2013: CYLINDER. CRACKED. (CAN) UPON REMOVING ACFT FROM WATER FOR WINTER STORAGE, ACFT ENGINE WAS INHIBITED/SCREEN CHECKED. COMPRESSIONS OF ALL CYLINDER WERE CHECKED, CYLINDER NR 1 WAS C
- [SDR IDCR2013FA0000565](https://openairdocs.org/sdr/IDCR2013FA0000565), Sep 27, 2013: BAFFLE. BROKEN. DURING ROUTINE INSPECTION, DISCOVERED BROKEN RIVET IN ENGINE OIL SUCTION SCREEN. BASED ON PREVIOUS EXPERIENCE, KNEW THIS MOST LIKELY CAME FROM A BROKEN OIL SUMP
- [SDR 2013FA0000489](https://openairdocs.org/sdr/2013FA0000489), Aug 13, 2013: VALVE. BROKEN. OPERATOR WAS COMPLAINING OF HIGHER THAN NORMAL OIL TEMPERATURES. FOUND VERNATHERM VALVE TO HAVE BROKEN. THE NUT THAT HOLDS THE SEATING VALVE HAD BROKEN OFF THE 
- [SDR J4YR201304299619](https://openairdocs.org/sdr/J4YR201304299619), Apr 24, 2013: CABLE. FAILED. ON REACHING ROTATION SPEED FOR TAKEOFF, ACFT SUDDENLY LOST PITCH CONTROL AND TAKEOFF WAS ABORTED. AFTER INVESTIGATION THE LT FWD STABILATOR CABLE WAS FOUND TO H
- [SDR 2012FA0000783](https://openairdocs.org/sdr/2012FA0000783), Nov 29, 2012: TURNBUCKLE. BROKEN. AFT FUSELAGE ELEVATOR CABLE TURNBUCKLE END, CRACKED AND BROKE OFF AT THE BARREL SIDE IN THE SHANK PART, .6250" BACK FROM THE THREADED PORTION OF THE TURNBUCKLE 
- [SDR 2013FA0000114](https://openairdocs.org/sdr/2013FA0000114), Jun 20, 2012: SWITCH. STUCK. NOSE GEAR DOWN INDICATOR SWITCH REMAINED STUCK CLOSED AFTER RETRACTION OF GEAR. WHEN GEAR WAS EXTENDED, HYD PRESSURE TO NOSE GEAR STOPPED WHEN MAIN GEAR DOWN LI
- [SDR 2012F00096](https://openairdocs.org/sdr/2012F00096), May 20, 2012: CONTROL HANDLE. MALFUNCTIONED. LANDING GEAR LOWERED AND PILOT REPORTED INDICATOR LIGHTS WERE ALL 3 GREEN, THE LANDING GEAR LEVER DID NOT RETURN TO NEUTRAL. PILOT ATTEMPTED TO CYCLE GEAR UP, B
- [SDR 2012FA0000277](https://openairdocs.org/sdr/2012FA0000277), Mar 6, 2012: SPARK PLUG. MISMANUFACTURED. INSTALLED NEW MFG FINE WIRE PLUGS IN FEB 2010 AT 1260 HRS TT. NOTICED A PROBLEM WITH THE RESISTORS IN A FEW OF THE PLUGS. NOTICED HARD STARTING WHEN HOT. AT ANN
- [SDR 2012FA0000186](https://openairdocs.org/sdr/2012FA0000186), Feb 1, 2012: HUB. CRACKED. LIQUID PENETRANT INDICATION ON THE EXTERNAL SOCKET ON NR 2 BLADE AT 4 O`CLOCK. THIS IS NOT A RADIAL INDICATION. THIS CRACK INDICATION WAS DISCOVERED DURING O/H.
- [SDR 2010FA0001217](https://openairdocs.org/sdr/2010FA0001217), Nov 5, 2010: BLADES. SEPARATED. (9C9S) ROTOR BLADE FAILED INSPECTION FOR AD 2007-26-12 AND MFG SB NR72 R44II.
- [SDR 2010FA0001218](https://openairdocs.org/sdr/2010FA0001218), Nov 5, 2010: BLADES. DAMAGED. (9C9S) MAIN ROTOR BLADE FAILED INSPECTION FOR AD 2007-26-12 AND MFG SB NR 72, R44II.
- [SDR 2010FA0001172](https://openairdocs.org/sdr/2010FA0001172), Oct 21, 2010: IGNITION SWITCH. INOPERATIVE. ACFT LOST ELECTRICAL POWER DURING LANDING, PILOT IN COMMAND NOTICED THE GEAR WAS NOT LOCKED IN THE DOWN POSITION AND DID A GO AROUND. PILOT HAND PUMPED THE GEAR
- [SDR 2010FA0001081](https://openairdocs.org/sdr/2010FA0001081), Oct 5, 2010: DISPLAY. FAILED. THE MFD (RT SEAT) WOULD NOT ALLOW FOR FREQUENCY CHANGES ON BOTH THE NAV AND COM. THE PFD (LT SEAT) CONTINUED TO WORK FINE. ONCE THE NEW FREQUENCIES WERE TUNED I
- [SDR 2010FA0000497](https://openairdocs.org/sdr/2010FA0000497), May 13, 2010: BAFFLE. CRACKED. DURING ENGINE MAINTENANCE THAT REQUIRED THE REMOVAL OF THE OIL SUMP THE INTERNAL OIL SUMP BAFFLE (P/N 56G23399) WAS FOUND BADLY CRACKED (APPROX. 4" LONG) ON THE
- [SDR 2010FA0000211](https://openairdocs.org/sdr/2010FA0000211), Feb 22, 2010: OIL FILTER. INOPERATIVE. WHILETRYING TO TIGHTEN A NEW OIL FILTER ONTO ENGINE, THE FILTER WOULD GET PARTIALLY TIGHT THEN POP LOOSE. REMOVED OIL FILTER TO FIND CENTER MOUNTING STUD HAD BR
- [SDR 2010FA0000023](https://openairdocs.org/sdr/2010FA0000023), Jan 6, 2010: DUCT. COLLAPSED. DURING ANNUAL INSP, FOUND DUCT JUST AFT OF INDUCTION FILTER TO BE PARTIALLY COLLAPSED. AFTER REMOVING DUCT, FOUND THE INTERNAL WIRE FORMERS TO BE DISCONNECTED A
- [SDR 2009FA0001015](https://openairdocs.org/sdr/2009FA0001015), Oct 29, 2009: VALVE. STUCK. ON START UP AND TAXI OUT OF THE ACFT, EXHAUST AND INTAKE VALVES STUCK. THIS CAUSED BOTH PUSH RODS TO BEND. AND LIFTER PLUNGER WAS LOCKED UP UPON FURTHER INSP. E
- [SDR EN02009F00000](https://openairdocs.org/sdr/EN02009F00000), Jun 1, 2009: PUMP. FAILED. FUEL EDP DID NOT MAKE FULL FUEL PRESSURE/GPH AT TAKE OFF RPM. NORMAL TAKEOFF FUEL FLOW ONLY REACHED WHEN AUX FUEL PUMP WAS ON. WHEN AUX PUMP SWITCHED OFF AT TAK
- [SDR CA090403011](https://openairdocs.org/sdr/CA090403011), Mar 27, 2009: TIE BOLT. FAILED. (CAN) IT WAS THE USUAL ON TOUCHDOWN, BUT WE HAD A 15-20 KNOT WIND TO HELP SLOW THINGS DOWN AND FOUND THE LANDING NOT REMARKABLE IN ANY WAY. SAME WITH TAKEOFF, T
- [SDR 2008FA0000843](https://openairdocs.org/sdr/2008FA0000843), Nov 10, 2008: COWLING. BROKEN. AFTER LIFTOFF, AT APPROX 250 TO 300 FEET AGL THE RT SIDE OF THE UPPER ENGINE COWLING CAME LOOSE AND BROKE OFF AT APPROX THE MIDDLE LT PORTION OF THE COWLING, FA
- [SDR 2008FA0000655](https://openairdocs.org/sdr/2008FA0000655), Sep 21, 2008: MUFFLER. CRACKED. MUFFLER WAS HEAT BLISTERED AND CRACKED AT TAIL PIPE TRANSITION. COLLECTOR WAS BURNED THRU UNDER CLAMP AT NR 1 CYLINDER, ALSO HEAT BLISTERED. (K)
- [SDR 2008FA0000656](https://openairdocs.org/sdr/2008FA0000656), Sep 21, 2008: MUFFLER. BULGED. MUFFLER FOUND - BULGED - BLISTERED AND HEAT CRACKED AT TAILPIPE TRANSITION. (K)
- [SDR 2008FA0000618](https://openairdocs.org/sdr/2008FA0000618), Aug 19, 2008: TANK. LEAKING. THE ACFT OPERATOR DROPPED THE ACFT OFF WITH A COMPLAINT OF A FUEL LEAK IN THE LT WING. THERE WAS EXTERNAL STAINING AT THE IB AFT EDGE OF THE TANK ASSY WHERE IT 
- [SDR FFK2008F00001](https://openairdocs.org/sdr/FFK2008F00001), Jul 23, 2008: MAGNETO. BROKEN. PILOT REPORTED OIL LEAKING FROM THE ENGINE COWLING AFTER THE LAST FLIGHT OF THE DAY. MAINT TROUBLESHOT PROBLEM TO BE COMING FROM THE DUEL MAGNETO, PN BL-6825601
- [SDR 2008FA0000519](https://openairdocs.org/sdr/2008FA0000519), Jul 17, 2008: CAMSHAFT. WORN. CAMSHAFT LOBES WORN FROM CORROSION PITS. (K)
- [SDR 2008FA0000418](https://openairdocs.org/sdr/2008FA0000418), Jun 28, 2008: WHEEL. BROKEN. DIFFICULTY WAS ENCOUNTERED WHILE AN AMT WAS REMOVING THE RETAINING NUT FROM THE AXLE ON THE RT MAIN GEAR OF AC. HE STOPPED AND DEFLATED THE TIRE. THE WHEEL ASSE
- [SDR CA080630002](https://openairdocs.org/sdr/CA080630002), Jun 23, 2008: CONTROL COLUMN. CORRODED. (CAN) WHILE CARRYING OUT AN ANNUAL INSP AND SEB 01-3 R1 HEAVY CORROSION WAS FOUND INTERNALLY IN CONTROL YOKE. A/C HISTORY SHOWED FRESH WATER SUBMERSION IN 1982.
- [SDR 2008FA0000408](https://openairdocs.org/sdr/2008FA0000408), May 28, 2008: WHEEL. CORRODED. DURING A ROUTINE INSPECTION THE AMT ENCOUNTERED DIFFICULTY WHILE REMOVING THE LT MAIN GEAR WHEEL ASSEMBLY AXLE RETAINING NUT. HE STOPPED AND DEFLATED THE TIRE. 

All 270: https://openairdocs.org/engine/lycoming-io-540-series/reports.md

## STCs that may be installed (OpenAirDocs) (70, first 50)

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 SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC. Lists IO-540-AB1A5
- [STC SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. B & C Specialty Products Inc. Lists IO-540-A1A5
- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd. Lists IO-540-A1A5
- [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company. Lists IO-540-A1A5
- [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc. Lists IO-540-A1A5
- [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. Lists IO-540-A1A5
- [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
- [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc. Lists IO-540-A1A5
- [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. Lists IO-540-A1A5
- [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. Lists IO-540-A1A5
- [STC SE85WE](https://openairdocs.org/stc/SE85WE): Installation of two Roto-Master turbochargers Model 3DT5FF10J2, P/N RJ 0080-102. TALCO Aviation. Lists IO-540-K1G5D
- [STC SE01436LA](https://openairdocs.org/stc/SE01436LA): Installation of Firewall Forward Technologies LLC modified camshaft. Centri-lube Technologies LLC. Lists IO-540-A1A5
- [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp. Lists IO-540-A1A5
- [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. Lists IO-540-A1A5
- [STC SE01537AT](https://openairdocs.org/stc/SE01537AT): Replace counterweights on Lycoming O-540-A1A5, -A1B5, -A1C5, -A1D5, and IO-540-C1B5 engines. Whelen Aerospace Technologies. Lists IO-540-C1B5
- [STC SE3873NM](https://openairdocs.org/stc/SE3873NM): Installation of two AiResearch induction air intercoolers. Franklin Aircraft Engines Inc. Lists IO-540-R1A5
- [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp. Lists IO-540-A1A5
- [STC SE09445SC](https://openairdocs.org/stc/SE09445SC): Installation of fuel injector nozzles. General Aviation Modifications Inc
- [STC SE03498AT](https://openairdocs.org/stc/SE03498AT): Conversion of Lycoming IO-540-D4B5 to Alamo Aerospace Model IO-540-D4B5-AA that has the same performance ratings and limitations as Lycoming Model IO-540-D4B5. Air Plains Services Corporation. Lists IO-540-D4B5
- [STC SE1339SW](https://openairdocs.org/stc/SE1339SW): Modify pistons to Drawings 11007 and 11015; piston rings. Continental Motors, Inc. Lists IO-540-D4A5
- [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc
- [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
- [STC SE7667SW](https://openairdocs.org/stc/SE7667SW): Installation of parts listed on Drawing List No. 8810-3, Rev 6. Continental Motors, Inc
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc
- [STC SE00218NY](https://openairdocs.org/stc/SE00218NY): Replacement of Lycoming starter with SKY-TEC 12 volt starter installed. Hartzell Engine Technologies, LLC
- [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. Lists IO-540-A1A5
- [STC SE00357NY](https://openairdocs.org/stc/SE00357NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter installed. Hartzell Engine Technologies, LLC
- [STC SE2901NM](https://openairdocs.org/stc/SE2901NM): Lycoming valve cover gasket. Real Gaskets Tennessee. Lists IO-540-A1A5
- [STC SE2902NM](https://openairdocs.org/stc/SE2902NM): Lycoming valve cover gasket. Real Gaskets Tennessee. Lists IO-540-A1A5
- [STC SE3329NM](https://openairdocs.org/stc/SE3329NM): Lycoming valve cover gasket. Real Gaskets Tennessee. Lists IO-540-B1A5
- [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. Lists IO-540-A1A5
- [STC SE01211SE](https://openairdocs.org/stc/SE01211SE): Installation of the Merlyn Products Inc. turbocharger system. Merlyn Products Inc. Lists IO-540-AG1A5
- [STC SE02050AK](https://openairdocs.org/stc/SE02050AK): Grind nitrided high compression cylinder barrels to plus 0.010 oversize and install P10 piston, P10 compression rings, and P10 oi l rings. Custom Aircraft Inc. Lists IO-540-W1A5D
- [STC SE00357DE](https://openairdocs.org/stc/SE00357DE): Modification to Textron Lycoming engine for the installation of turbonormalizing system. Fly In Vacations. Lists IO-540-T4A5D
- [STC SE02436AT](https://openairdocs.org/stc/SE02436AT): Installation of 200F series fuel pump assembly. Kelly Aerospace Energy Systems LLC. Lists IO-540-K1E5
- [STC SE02555AT](https://openairdocs.org/stc/SE02555AT): Consolidated Fuel Systems 201F series fuel pump assembly on various Textron Lycoming engine models. Kelly Aerospace Energy Systems LLC. Lists IO-540-A1A5
- [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
- [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 SE8193SW](https://openairdocs.org/stc/SE8193SW): Grind nitriden high compression cylinder barrles to plus .010 oversize and install SL75089 P10 piston, SL74242 P10 compression ring, and SL73857 P10 oil ring. Superior Air Parts Inc. Lists IO-540-C1B5
- [STC SE611GL](https://openairdocs.org/stc/SE611GL): Incorporation of a fuel flow transducer. Shadin Avionics. Lists IO-540-C1B5
- [STC SE01930NY](https://openairdocs.org/stc/SE01930NY): Installation of Casper Labs 90 degree oil filter housing adapter. Casper Labs Inc. Lists IO-540-A1A5
- [STC SE7734SW](https://openairdocs.org/stc/SE7734SW): Modification of engine for operation with ethanol fuel. Shauck Dr Maxwell E Jr. Lists IO-540-C1B5
- [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc. Lists IO-540-A1A5
- [STC SE21WE](https://openairdocs.org/stc/SE21WE): Installation of Turbosupercharger 406610-3. GE Engine Services-Corporate Aviation Inc. DBA Garrett Aviation Services. Lists IO-540-C1B5
- [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
- [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter. Aviation Development Corporation. Lists IO-540-A1A5
- [STC SE00890LA](https://openairdocs.org/stc/SE00890LA): Installation of Nickson's cylinder barrels on Lycoming reciprocating engine models. Nickson's Machine Shop Inc
- [STC SE1657NM](https://openairdocs.org/stc/SE1657NM): Installation of Rotomaster3AU2ME60H3 (or H2) and3AV2ME60H3 (or H2), turbo- chargers, optional intercooler and associated systems. Machen Inc. Lists IO-540-AA1A5
- [STC SE3590NM](https://openairdocs.org/stc/SE3590NM): Installation of Machen intercooler and associated systems. Machen Inc. Lists IO-540-AA1A5
- [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

All 70: https://openairdocs.org/engine/lycoming-io-540-series/stcs.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.