# Lycoming O-540-E4B5

- Type: Engine model (FAA registry)
- Registry code: 42342
- Manufacturer (registry): LYCOMING
- Model: O-540-E4B5
- Engine type: Reciprocating
- Power: 260 hp
- Data sheet: [TCDS E-295](https://openairdocs.org/tcds/E-295) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 21 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-o-540-e4b5

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 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 2012-03-07](https://openairdocs.org/ad/2012-03-07): Carburetor · Lycoming Engines GO-435, GO-435-C2 (O-435-17), GO-435-C2A and 389 more. Effective Mar 27, 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 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 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 97-15-11](https://openairdocs.org/ad/97-15-11): Cylinder kits · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 538 more. Effective Aug 12, 1997
- [AD 96-09-10](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 89-04-02](https://openairdocs.org/ad/89-04-02): Carburetors · Continental Motors O-470-11, O-470-11-CI, O-470-11B and 175 more. Effective Mar 8, 1989
- [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 69-24-03](https://openairdocs.org/ad/69-24-03): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 321 more. Effective Nov 29, 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 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 63-22-03](https://openairdocs.org/ad/63-22-03): Carburetors · Continental Motors GO-300-A, GO-300-B, GO-300-C and 143 more. Effective Dec 2, 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 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 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 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) (6)

- [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-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 (21)

- [N134RT](https://openairdocs.org/aircraft/N134RT): [Taylor Robert E](https://openairdocs.org/faa-owner/TAYLOR%20ROBERT%20E), [Soldotna, AK](https://openairdocs.org/faa-place/AK/Soldotna), built 2017, S/N 78
- [N154RV](https://openairdocs.org/aircraft/N154RV): [Lavalley Thomas L](https://openairdocs.org/faa-owner/LAVALLEY%20THOMAS%20L), [Colorado Springs, CO](https://openairdocs.org/faa-place/CO/Colorado%20Springs), built 2015, S/N 004
- [N220EX](https://openairdocs.org/aircraft/N220EX): [Rodriguez Henry Solano](https://openairdocs.org/faa-owner/RODRIGUEZ%20HENRY%20SOLANO), [Charlotte, NC](https://openairdocs.org/faa-place/NC/Charlotte), built 2010, S/N 97143
- [N253PR](https://openairdocs.org/aircraft/N253PR): [Renaud Paul D](https://openairdocs.org/faa-owner/RENAUD%20PAUL%20D), [Tenafly, NJ](https://openairdocs.org/faa-place/NJ/Tenafly), built 2012, S/N 40686
- [N3119X](https://openairdocs.org/aircraft/N3119X): [Reese Travis A](https://openairdocs.org/faa-owner/REESE%20TRAVIS%20A), [Glade Park, CO](https://openairdocs.org/faa-place/CO/Glade%20Park), built 2007, S/N 001
- [N3593W](https://openairdocs.org/aircraft/N3593W): [Griffin Julie A](https://openairdocs.org/faa-owner/GRIFFIN%20JULIE%20A), [Locust Grove, GA](https://openairdocs.org/faa-place/GA/Locust%20Grove), built 1966, S/N 32-489
- [N3922W](https://openairdocs.org/aircraft/N3922W): [Steffey John](https://openairdocs.org/faa-owner/STEFFEY%20JOHN), [Saint Augustine, FL](https://openairdocs.org/faa-place/FL/Saint%20Augustine), built 1967, S/N 32923
- [N408PT](https://openairdocs.org/aircraft/N408PT): built 1981, S/N 1
- [N4769S](https://openairdocs.org/aircraft/N4769S): [Redemption Leasing LLC](https://openairdocs.org/faa-owner/REDEMPTION%20LEASING%20LLC), [Kodiak, AK](https://openairdocs.org/faa-place/AK/Kodiak), S/N 32-1177
- [N4878S](https://openairdocs.org/aircraft/N4878S): [Garmin International Inc](https://openairdocs.org/faa-owner/GARMIN%20INTERNATIONAL%20INC), [Salem, OR](https://openairdocs.org/faa-place/OR/Salem), built 1971, S/N 32-7100002
- [N540CZ](https://openairdocs.org/aircraft/N540CZ): [Orr David A C](https://openairdocs.org/faa-owner/ORR%20DAVID%20A%20C), [Lake Forest, CA](https://openairdocs.org/faa-place/CA/Lake%20Forest), built 2006, S/N 0673
- [N540KL](https://openairdocs.org/aircraft/N540KL): [Johannes Dale R](https://openairdocs.org/faa-owner/JOHANNES%20DALE%20R), [Whitefish, MT](https://openairdocs.org/faa-place/MT/Whitefish), built 2014, S/N 1083
- [N57GF](https://openairdocs.org/aircraft/N57GF): [Kuklo Robert M](https://openairdocs.org/faa-owner/KUKLO%20ROBERT%20M), [Livermore, CA](https://openairdocs.org/faa-place/CA/Livermore), built 2012, S/N RK1-008
- [N6098M](https://openairdocs.org/aircraft/N6098M): [Anderson Luther B Jr](https://openairdocs.org/faa-owner/ANDERSON%20LUTHER%20B%20JR), [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla), built 1947, S/N 108-4098
- [N60LY](https://openairdocs.org/aircraft/N60LY): [Leon Roberts Enterprises LLC](https://openairdocs.org/faa-owner/LEON%20ROBERTS%20ENTERPRISES%20LLC), [Vienna, VA](https://openairdocs.org/faa-place/VA/Vienna), built 1965, S/N 32-10
- [N6234X](https://openairdocs.org/aircraft/N6234X): [Moeller Raymond H II](https://openairdocs.org/faa-owner/MOELLER%20RAYMOND%20H%20II), [Willowbrook, IL](https://openairdocs.org/faa-place/IL/Willowbrook), built 2019, S/N 001
- [N655X](https://openairdocs.org/aircraft/N655X): [Royall Michael B](https://openairdocs.org/faa-owner/ROYALL%20MICHAEL%20B), [Morgan, UT](https://openairdocs.org/faa-place/UT/Morgan), built 2008, S/N 54
- [N7081H](https://openairdocs.org/aircraft/N7081H): [Taubert Martyn Wayne](https://openairdocs.org/faa-owner/TAUBERT%20MARTYN%20WAYNE), [South Yarmouth, MA](https://openairdocs.org/faa-place/MA/South%20Yarmouth), built 1971, S/N 32-7100028
- [N728HR](https://openairdocs.org/aircraft/N728HR): [Velasco Higareda Ignacio L](https://openairdocs.org/faa-owner/VELASCO%20HIGAREDA%20IGNACIO%20L), [Valencia, CA](https://openairdocs.org/faa-place/CA/Valencia), built 2009, S/N 007
- [N77RM](https://openairdocs.org/aircraft/N77RM): [Bendure Ryan R](https://openairdocs.org/faa-owner/BENDURE%20RYAN%20R), [Brighton, CO](https://openairdocs.org/faa-place/CO/Brighton), built 2012, S/N 200
- [N817LH](https://openairdocs.org/aircraft/N817LH): [Havelka Lambert H](https://openairdocs.org/faa-owner/HAVELKA%20LAMBERT%20H), [Mc Gregor, TX](https://openairdocs.org/faa-place/TX/Mc%20Gregor), built 2017, S/N 41054

## NTSB investigations (9)

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 ERA26LA151](https://openairdocs.org/ntsb/ERA26LA151), Mar 25, 2026: Piper PA-32-260 (N7081H), Block Island, RI, substantial damage. Probable cause: Maintenance personnel’s failure to ensure that the throttle cable was properly secured to the carburetor, which resulted an inflight separation of the throttle cable and the pilots’ inability to…
- [NTSB GAA17CA033](https://openairdocs.org/ntsb/GAA17CA033), Oct 19, 2016: Stinson 108 3 (N818C), Boulder City, NV, substantial damage. Probable cause: The pilot’s failure to ensure that the aerial pickup towline was not entangled around the horizontal stabilizer after the banner pickup.
- [NTSB ERA12LA315](https://openairdocs.org/ntsb/ERA12LA315), May 2, 2012: Berry Dean Glasair I (N540GZ), Columbus, GA, substantial damage. Probable cause: The pilot’s failure to maintain directional control during takeoff, which resulted in a runway excursion and collision with a runway sign. Contributing to the accident was the pilot’s lack of…
- [NTSB CEN09CA045](https://openairdocs.org/ntsb/CEN09CA045), Nov 1, 2008: Hartter Lenny J Bearhawk (N3119X), Mack, CO, substantial damage. Probable cause: The collapse of the left main landing gear which resulted in the pilot's failure to maintain directional control.
- [NTSB DEN88LA144](https://openairdocs.org/ntsb/DEN88LA144), Jul 3, 1988: Piper PA-32-260 (N4878S), Colorado Spring, CO, substantial damage
- [NTSB MKC79FCA10](https://openairdocs.org/ntsb/MKC79FCA10), Feb 27, 1979: Piper PA-32 (N4878S), Farmington, MO, substantial damage
- [NTSB NYC75FFJ08](https://openairdocs.org/ntsb/NYC75FFJ08), Jul 13, 1974: Stinson 108-2 (N9653K), Niagara Falls, NY, substantial damage
- [NTSB CHI71FEI62](https://openairdocs.org/ntsb/CHI71FEI62), Jun 6, 1971: Piper PA-32 (N3922W), Bowlng Green, OH, substantial damage
- [NTSB CHI69D0431](https://openairdocs.org/ntsb/CHI69D0431), Jan 12, 1969: Piper PA-32 (N3922W), Boyne Falls, MI, substantial damage

## FAA accident and incident reports (13)

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

- [Accident 20260325005629A](https://openairdocs.org/incident/20260325005629A), Mar 25, 2026: Piper PA-32-260 (N7081H), Block Island, RI, Substantial damage. On March 25, 2026, an aircraft accident involving a [privacy data omitted] with two pilots occurred. The aircraft departed from chatham municipal airport (cqx)…
- [Incident 20230212004719I](https://openairdocs.org/incident/20230212004719I), Feb 12, 2023: Robert Michael Kuklo BARRACUDA (N57GF), Tracy, CA, Minor damage. Upon return to ktcy a standard left 45 pattern to runway 30 was initiated. Upon turning downwind the gear was selected "down". Gear indicator lights and visual…
- [Incident 20210501007669I](https://openairdocs.org/incident/20210501007669I), May 1, 2021: Ryan R Bendure HARMON ROCKET II (N77RM), St. Joseph, MO, Minor damage. Pilot was performing as part of a formation flight team at an airshow. Team was performing a tail stand at show center. Wind was from behind 20-30 mph, gusts…
- [Accident 20161019020979A](https://openairdocs.org/incident/20161019020979A), Oct 19, 2016: Stinson 108-3 (N818C), Boulder City, NV, Substantial damage. On 10/19/2016, at approximately 1145 hours, a single engine Stinson airplane impacted desert terrain during a forced landing near the Boulder City Airport in…
- [Accident 20120502010059A](https://openairdocs.org/incident/20120502010059A), May 2, 2012: Berry Dean GLASAIR I (N540GZ), Columbus, GA, Substantial damage. On may 02, 2012 at 11:00AM an accident occurred at Columbus Metropolitan Airport, Columbus ga. Aircraft involved a model glasair 1 td, N540GZ s/n 208 taking…
- [Accident 20081101849749A](https://openairdocs.org/incident/20081101849749A), Nov 1, 2008: Hartte BEARHAWK (N3119X), Mack, CO, Substantial damage. (-23) During landing on r/w 25 at Mack Mesa Airport, the pilot loss directional control of the aircraft on touch down and departed the runway to the right…
- [Incident 20040529009919I](https://openairdocs.org/incident/20040529009919I), May 29, 2004: Univar 1082 (N9653K), Santa Ana, CA. (-23) On 5/29/2004, at approximately 1435 hours, a banner tower dropped its banner short of the airport this caused the banner to fall on a car on the 405…
- [Incident 20000724034799I](https://openairdocs.org/incident/20000724034799I), Jul 24, 2000: Univar 1082 (N9653K), Los Angeles, CA, Minor damage. (-23)While towing a banner over downtown Los Angeles, aircraft experienced loss of power. Pilot attempted to trouble shoot engine and restart, results…
- [Incident 19970927045809I](https://openairdocs.org/incident/19970927045809I), Sep 27, 1997: Univar 1083 (N818C), Fullerton, CA. This report was made with the help of signed statements and interviews with pilot Mr. Michael lamoureux cert #562069454 and the owner of skyads, Mr. Robert…
- [Incident 19880812044189I](https://openairdocs.org/incident/19880812044189I), Aug 12, 1988: Piper PA32260 (N4878S), Topeka, KS, Minor damage. Pilot made a hard landing. Plane porpoised down runway. Damage to nose gear. Appears lack of competence was the cause
- [Accident 19880702025029A](https://openairdocs.org/incident/19880702025029A), Jul 2, 1988: Piper PA32260 (N4878S), Colorado Spring, CO, Substantial damage. Bounced and porpoised on landing. Impacts broke off the nose gear. Aircraft then skidded off the runway.
- [Accident 19790227003789A](https://openairdocs.org/incident/19790227003789A), Feb 27, 1979: Piper PA32260 (N4878S), Farmington, MO, Substantial damage. Pilot hit a patch of snow on runway, lost directional control.
- [Accident 19740713023569A](https://openairdocs.org/incident/19740713023569A), Jul 13, 1974: Univar 1082 (N9653K), Niagara Falls, NY, Substantial damage. Acft veered off rwy plt apld r brake to return to rwy acft nosed ovr. Brakes ckd ok.

## Service difficulty reports (39)

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

- [SDR 2025F00056](https://openairdocs.org/sdr/2025F00056), Mar 1, 2025: MAGNETO. FAILED. RUN UP ENGINE WENT DOWN WHEN TESTING.
- [SDR 2020FA0000179](https://openairdocs.org/sdr/2020FA0000179), Feb 25, 2020: POINTS. BENT. SLIGHTLY LESS THAN 500 HOURS AGO (AUGUST 2016), THE AIRPLANE WAS APPROPRIATELY MODIFIED WITH THE INSTALLATION OF A SLICK START SYSTEM WHICH INCLUDED THE INSTALL
- [SDR 2014FA0000096](https://openairdocs.org/sdr/2014FA0000096), Feb 17, 2014: VALVE. STICKING. ELECTRIC FUEL PUMP WILL NOT PUMP FUEL. DISASSEMBLY OF PART INDICATES STUCK OR STICKING VALVE INTERNALLY WHICH WOULD NOT ALLOW FUEL FLOW THROUGH SYSTEM TO ENGINE
- [SDR 2011FA0000774](https://openairdocs.org/sdr/2011FA0000774), Dec 2, 2011: B-NUT. BACKED OUT. PILOT REPORTED SMOKE IN THE COCKPIT AFTER LANDING. AFTER AN INSPECTION OF THE ENGINE, IT WAS FOUND THAT NR4 CYLINDER HEAD OIL RETURN LINE "B" NUT HAD BACKED OFF
- [SDR 2011FA0000770](https://openairdocs.org/sdr/2011FA0000770), Nov 3, 2011: CRANKSHAFT. BROKEN. CRANKSHAFT BROKE IN FLIGHT. CONTINUED TO RUN BUT PILOT REPORTED KNOCKING NOISE IN ENGINE AND LANDED. ENGINE WAS REMOVED FROM AIRCRAFT AND SHIPPED TO SHOP FOR PA
- [SDR CA091102001](https://openairdocs.org/sdr/CA091102001), Oct 28, 2009: TRANSMITTER. FAILED. (CAN) THE FLOAT, WHICH IS ATTACHED TO THE WIPER ARM OF THE FUEL SENDER, HAD DETERIORATED TO THE POINT OF FALLING OFF OF THE ARM.
- [SDR AU510001896](https://openairdocs.org/sdr/AU510001896), Dec 12, 2005: SPACER. WORN. LT OB ELEVATOR SPACER (DISTANCE PIECE) WORN BEYOND LIMITS. AS A RESULT THE ELEVATOR SUPPORT STRUCTURE WAS CRACKED TO THE POINT OF NEAR SEPARATION.
- [SDR 2005FA0000144](https://openairdocs.org/sdr/2005FA0000144), Aug 14, 2004: GEAR SHAFT. BROKEN. AT AIRCRAFT 100 HOUR ENGINE WAS FOUND WITH TIGHT SPOT. REMOVED ENGINE ACCYS AND FOUND GOVERNOR SHAFT NOT TURNING DISASSEMBLED ENGINE. FOUND GOVERNOR IDLER GEAR 
- [SDR 2004FA0000880](https://openairdocs.org/sdr/2004FA0000880), Aug 2, 2004: CRANKCASE. DAMAGED. WHILE CLIMBING OUT FROM RAWLINS, WY ON A FLIGHT TO HOLLISTER, CA., THE ENGINE STARTED TO RUN ROUGH AND THE PILOT NOTICED THAT THE OIL TEMPERATURE WAS RED LINED.
- [SDR 2004FA0000305](https://openairdocs.org/sdr/2004FA0000305), Apr 7, 2004: ROD BEARING. DELAMINATED. ENGINE EXPERIENCED FAILURE OF CONNECTING ROD BOLT, PN 74644 OR DELAMINATION OF CONNECTING ROD BEARING, PN SL 13521 IN NR 6 CONNECTING ROD POSITION. NOT SURE WHI
- [SDR 2004FA0000278](https://openairdocs.org/sdr/2004FA0000278), Feb 23, 2004: CONNECTING ROD. BROKEN. WHILE IN CRUISE FLIGHT, ENGINE STARTED TO RUN ROUGH, CATASTROPHIC ENGINE FAILURE OCCURED. PILOT MADE AN EMERGENCY LANDING, MINOR DAMAGE TO AIRCRAFT. INSPECTION 
- [SDR O3O2004F00000](https://openairdocs.org/sdr/O3O2004F00000), Jan 9, 2004: SHAFT. BROKEN. DISMANTLED THIS ENGINE DUE TO FUEL CONTAMINATION, FOUND THE PROP GOVERNOR IDLER SHAFT BROKEN AT THE KEYWAY AREA. ALSO THE IDLER GEAR SHAFT BOSS IN THE CRANKCASE
- [SDR 2003FA0001233](https://openairdocs.org/sdr/2003FA0001233), Nov 12, 2003: MUFFLER. DETACHED. EXHAUST TUBE ON MUFFLER, BECAME DETACHED FROM MUFFLER AND DEPARTED AIRCRAFT DURING NORMAL FLIGHT UNDER NORMAL CONDITIONS. RECOMMENDATIONS: CHANGE MUFFLER AT MFG
- [SDR IKR2003F00000](https://openairdocs.org/sdr/IKR2003F00000), Oct 16, 2003: INTAKE. WORN. AT ANNUAL INSPECTION, FOUND NR 1 INTAKE TUBE PN 71699 AT NR 1 INTAKE LOCATION EXCESSIVELY LOOSE, MOVEMENT, IN AND OUT, AND SIDEWAYS. MASSIVE AIR LEAKAGE INTO IN
- [SDR AUS20021269](https://openairdocs.org/sdr/AUS20021269), Oct 30, 2002: SPAR. CORRODED. (AUS) LH WING REAR SPAR CONTAINS SEVERE EXFOLIATION CORROSION BETWEEN THE SPAR AND ATTACHMENT PLATE.
- [SDR 2003FA0000996](https://openairdocs.org/sdr/2003FA0000996), Oct 7, 2002: MAIN BEARING. FAILED. NEW FRONT MAIN BEARING PN LW13884M010 (6-99 ML-KS) INSTALLED AT ENGINE MAJOR OVERHAUL ON 5/15/00. ENGINE REMOVED THIS DATE FOR METAL CONTAMINATION DV SCREEN AND
- [SDR HO1R15248](https://openairdocs.org/sdr/HO1R15248), Jan 19, 2002: SPAR. CORRODED. DURING ANNUAL INSPECTION THE RIGHT WING AFT ATTACH FITTING OUTBOARD OF THE FUSELAGE AND AFT WING SPAR WERE FOUND TO EXHIBIT DISSIMILAR METAL CORROSION BETWEEN T
- [SDR AUS20010743](https://openairdocs.org/sdr/AUS20010743), May 19, 2001: BOLT. FAILED. (AUS) LH MAIN LANDING GEARLOWER LEG SEPARATED FROM UPPER LEG. SUSPECT CAUSED BY FAILURE OF THE CENTRE TORQUE LINK BOLT. LOWER LEG HOLED LH FLAP DURING SEPARATIO
- [SDR 20010501CW002](https://openairdocs.org/sdr/20010501CW002), Apr 9, 2001: STUD. MISINSTALLED. DURING ENGINE INSTALLATION AFTER OVERHAUL, FOUND ALL 4 GOVERNOR HOLD DOWN STUDS NOT SCREWED FAR ENOUGH INTO CASE. STUDS HAD TO BE TURNED IN .2500 FURTHER TO ALL
- [SDR 20000412SH027](https://openairdocs.org/sdr/20000412SH027), Mar 18, 2000: CARBURETOR. SEPARATED. CARBURETOR SEPARATED AT PARTING SURFACE CAUSING BOTTOM HALF OF CARBURETOR TO ALMOST FALL OFF. LOCKING TABS WERE LOCKED, BOLTS WERE LOOSE. SUBMITTER STATED THIS 
- [SDR 99ZZZX1744](https://openairdocs.org/sdr/99ZZZX1744), Mar 2, 1999: INPULSE COUPLING. MISMANUFACTURED. PER AD 99-4-4, FOUND THE IMPULSE COUPLING TO BE MISSING ONE OF THE FLY-WEIGHT SPRINGS AND EXCESSIVE PLAY AT THE RIVETS.
- [SDR AU980807](https://openairdocs.org/sdr/AU980807), Jul 18, 1998: MUFFLER. SEPARATED. (AUS) MUFFLER EXHAUST OUTLET PIPE SEPARATED FROM THE MUFFLER.
- [SDR CA980513007](https://openairdocs.org/sdr/CA980513007), Apr 3, 1998: DIST BLOCK. CRACKED. (CAN) AFTER MAGNETO FAILURE, THE FOLLOWING DEFECTS WERE FOUND. THE DISTRIBUTOR BLOCK WAS CRACKED AND THERE WERE TEETH MISSING FROM THE DISTRIBUTOR GEAR.
- [SDR 97ZZZX4762](https://openairdocs.org/sdr/97ZZZX4762), Oct 15, 1997: IMPULSE COUPLING. BROKEN. ACFT IN CRUISE AT 4,000 FEET ON IFR FLIGHT PLAN WHEN ENGINE SUDDENLY LOST POWER. ALL ATTEMPTS MADE BY PILOT TO RESTART THE ENGINE UNSUCCESSFUL. PILOT WAS ABLE T
- [SDR 97ZZZX4184](https://openairdocs.org/sdr/97ZZZX4184), Aug 25, 1997: SHROUD TUBE. FRACTURED. AFTER RUN-UP, OIL FILM NOTED ON LEFT SIDE OF ENGINE. OIL CAME FROM DENT IN PUSH ROD SHROUD TUBE WHICH WAS FOUND COMPLETELY FRACTURED AT DENT LOCATION. PUSH ROD 
- [SDR 97ZZZX4185](https://openairdocs.org/sdr/97ZZZX4185), Aug 25, 1997: DRAIN TUBE. CHAFED. NR 2 CYLINDER 71737 ROCKER DRAIN TUBE CHAFED THROUGH ABOUT 90 PERCENT OF WALL THICKNESS BY BOTTLE RETAINER (PIN EASILY PENETRATED 'PAPER-THIN' WALL') 68761 TUBE
- [SDR 97ZZZX4186](https://openairdocs.org/sdr/97ZZZX4186), Aug 25, 1997: DRAIN TUBE. CHAFED. NR 2 CYLINDER 71737 ROCKER DRAIN TUBE CHAFED THROUGH ABOUT 90 PERCENT OF WALL THICKNESS BY BOTTLE RETAINER (PIN EASILY PENETRATED 'PAPER-THIN' WALL') 68761 TUBE
- [SDR 97ZZZX4187](https://openairdocs.org/sdr/97ZZZX4187), Aug 25, 1997: VALVE. SEAL MISSING. SEALING FELT ON AIR BOX VALVE MISSING FROM OUTER EDGES EXCEPT FOR A 1 INCH SECTION THAT WAS 'HANGING ON'. THE FELT MATERIAL IS SANDWICHED BETWEEN 2 METAL PLATES
- [SDR AU971541](https://openairdocs.org/sdr/AU971541), Jul 21, 1997: VALVE SEAT. SEPARATED. (AUS) EXHAUST VALVE SEAT SEPARATED FROM CYLINDER HEAD.
- [SDR 97ZZZX3488](https://openairdocs.org/sdr/97ZZZX3488), Jul 11, 1997: SCREEN. REQUIRED CHANGE. REMOVED ENGINE FOR OVERHAUL WITH APPROXIMATELY 2,100 HOURS SINCE LAST OVERHAUL. OIL SUCTION SCREEN SAFETY WIRE WAS PAINTED WITH ENGINE PAINT. ENGINE LAST OVERHA
- [SDR 97ZZZX3691](https://openairdocs.org/sdr/97ZZZX3691), Jul 3, 1997: HOSE. DEFECTIVE. FUEL HOSE AT LEFT SIDE OF FIREWALL TO ENGINE DRIVEN FUEL PUMP DEVELOPS LOSS OF FUEL PRESSURE ON TAKEOFF. HOSE SUCKS IN AIR WHICH DOES NOT LET FUEL FLOW. SUBMITT
- [SDR CA970106005](https://openairdocs.org/sdr/CA970106005), Nov 21, 1996: HUB. CORRODED. (CAN) DURING CALENDAR TIME INSPECTION THE PROPELLER HUB WAS FOUND CORRODED IN THE #2 SOCKET. IN ACCORDANCE WITH HARTZELL MANUAL NO CORROSION IS PERMITTED.
- [SDR 96ZZZX3008](https://openairdocs.org/sdr/96ZZZX3008), May 25, 1996: FUEL PUMP. FAILED. PILOT REPORTED LOSS OF ENGINE POWER ON TAKEOFF AND ELECTED TO LAND ON GOLF COURSE. DURING INVESTIGATION, ENGINE WAS OPERATED AND ENGINE DRIVEN FUEL PUMP FOUND I
- [SDR CA960103532](https://openairdocs.org/sdr/CA960103532), Nov 24, 1995: VALVE SEAT. WRONG DEPTH. (CAN)AFTER THE ENGINE WAS OVERHAULED, WITH SIX (6) NEW CYLINDERS FROM CONTINENTAL, THE ENGINE FAILED TO ACHIEVE FULL POWER ON THE POST INSPECTION/OVERHAUL RUN-U
- [SDR CA960103533](https://openairdocs.org/sdr/CA960103533), Nov 24, 1995: WOODRUFF KEY. BROKEN. (CAN)THE OWNER REPORTED THAT #5 CYLINDER PISTON ROD MOVED ABNORMALLY AND THERE WAS A LOT OF METAL IN THE OIL FILTER. INTERNAL INSPECTION REVEALED THE ENGINE HAD
- [SDR 95ZZZX3210](https://openairdocs.org/sdr/95ZZZX3210), May 31, 1995: CRANKSHAFT. CRACKED. AIRCRAFT MADE AN OFF-FIELD LANDING 200 YARDS SHORT OF THE AIRPORT. A COMPLETE LOSS OF OIL OCCURRED EXITING A HOLE IN THE CRANKCASE ADJACENT TO THE NR 2 CYLINDER
- [SDR 95ZZZX2883](https://openairdocs.org/sdr/95ZZZX2883), May 1, 1995: VENTURI. CORRODED. FOUND CORROSION IS OCCURRING BELOW THE SURFACE OF THE CASTING CAUSING THE SURFACE TO BUBBLE UP, CHANGING THE SHAPE OF THE VENTURI. IF THIS PART IS PLATED, CAN T
- [SDR BIER9501A](https://openairdocs.org/sdr/BIER9501A), Jan 27, 1995: MAGNETO. MALFUNCTIONED. AT 100 HR INSP NOTICED LEFT MAG TIMEING INCORRECT. AFTER DISSASEMBLY FOUND PT.S COATED AND IMPULSE COUPLING PAST 500 HR LIMITS, VARIOUS OTHER PARTS WERE WORN WO
- [SDR 95ZZZX687](https://openairdocs.org/sdr/95ZZZX687), Jan 18, 1995: VALVE. BROKEN. THE AIRCRAFT RETURNED SHORTLY AFTER TAKEOFF WITH A ROUGH RUNNING ENGINE. THE EXHAUST VALVE, THE UPPER VALVE SPRING SEAT, PN LW-16475, AND THE VALVE STEM CAP, PN

## 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 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
- [STC SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. B & C Specialty Products Inc
- [STC SE2932SW](https://openairdocs.org/stc/SE2932SW): Install carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive. Alcor LLC. Lists O-540 Series
- [STC SE208SO](https://openairdocs.org/stc/SE208SO): Installation of ice indicator in the carburetor. LegacySTC.com. Lists O-540 Series
- [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 SE2388CE](https://openairdocs.org/stc/SE2388CE): Installation of B&C Speciality Products lightweight (10.2) pounds) engine starter, part number BC-315-100-1 (12 volts) or part number BC-315-100-3 (24 volts). B & C Specialty Products Inc. Lists O-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 SE40WE](https://openairdocs.org/stc/SE40WE): Installation of two Roto-Master Turbochargers Model No. 3DT5FF10J2, P/N 600572-00 (formerly Rayjay Model No. 315F10 P/N RJ0080-100, -101, or - 102). TALCO Aviation
- [STC SE01436LA](https://openairdocs.org/stc/SE01436LA): Installation of Firewall Forward Technologies LLC modified camshaft. Centri-lube Technologies LLC
- [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp
- [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc
- [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp
- [STC SE1339SW](https://openairdocs.org/stc/SE1339SW): Modify pistons to Drawings 11007 and 11015; piston rings. Continental Motors, Inc
- [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc. Lists O-540 Series
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists O-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 O-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 O-540 Series
- [STC SE2901NM](https://openairdocs.org/stc/SE2901NM): Lycoming valve cover gasket. Real Gaskets Tennessee
- [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 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
- [STC SE922GL](https://openairdocs.org/stc/SE922GL): Installation of a Shadin Company fuel flow transducer. Shadin Avionics
- [STC SE7734SW](https://openairdocs.org/stc/SE7734SW): Modification of engine for operation with ethanol fuel. Shauck Dr Maxwell E Jr
- [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc
- [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 O-540 Series
- [STC SE1-201](https://openairdocs.org/stc/SE1-201): Installation of the Richter Aero Equipment Type B-4 or B-5 Temperature Probe. (O-360 SERIES (excl. A1C, C2B, C2D)). MidContinent Instru Co Inc. Lists O-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 O-540 Series
- [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co. Lists O-540 Series
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists O-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 O-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 O-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 O-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 O-540 Series
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists O-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 O-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 O-540 Series
- [STC SA01436DE](https://openairdocs.org/stc/SA01436DE) (historical): Installation of Firewall Forward Technologies, LLC modified camshaft. Centri-Lube Technologies LLC

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