# Lycoming O-235-C1

- Type: Engine model (FAA registry)
- Registry code: 42027
- Manufacturer (registry): LYCOMING
- Model: O-235-C1
- Engine type: 4 cycle
- Power: 115 hp
- Data sheet: [TCDS E-223](https://openairdocs.org/tcds/E-223) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 49 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-o-235-c1

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 2012-03-07](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 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 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 98-01-06](https://openairdocs.org/ad/98-01-06): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 184 more. Effective Feb 13, 1998
- [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 95-03-10](https://openairdocs.org/ad/95-03-10): Push Rods · Lycoming Engines O-235, O-235-A, O-235-AP and 38 more. Effective Jan 24, 1996
- [AD 93-19-04](https://openairdocs.org/ad/93-19-04): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 184 more. Effective Oct 18, 1993
- [AD 90-04-06 R1](https://openairdocs.org/ad/90-04-06-R1): Propeller Governor External Oil Line · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 427 more. Effective May 28, 1991
- [AD 80-25-02 R2](https://openairdocs.org/ad/80-25-02-R2): Pushrods · Lycoming Engines O-235, O-235-A, O-235-AP and 30 more. Effective Jan 13, 1981
- [AD 80-06-05](https://openairdocs.org/ad/80-06-05): Magnetos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 254 more. Effective Mar 28, 1980
- [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 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

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 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) (3)

- [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-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014
- [SAIB NE-06-32R1](https://openairdocs.org/saib/NE-06-32R1): Reciprocating Engine - Crankshaft. Issued Sep 10, 2008

## Registered aircraft (49)

- [N11PX](https://openairdocs.org/aircraft/N11PX): [Muehlberg Stephen E](https://openairdocs.org/faa-owner/MUEHLBERG%20STEPHEN%20E), [Newcastle, OK](https://openairdocs.org/faa-place/OK/Newcastle), built 2018, S/N 011
- [N1446K](https://openairdocs.org/aircraft/N1446K): [Coleman James P](https://openairdocs.org/faa-owner/COLEMAN%20JAMES%20P), [Sand Springs, OK](https://openairdocs.org/faa-place/OK/Sand%20Springs), built 2015, S/N 8214
- [N1500J](https://openairdocs.org/aircraft/N1500J): [Bent James L Jr DBA](https://openairdocs.org/faa-owner/BENT%20JAMES%20L%20JR%20DBA), [Palatine Bridge, NY](https://openairdocs.org/faa-place/NY/Palatine%20Bridge), S/N 18-294
- [N170DB](https://openairdocs.org/aircraft/N170DB): [Blanton David L](https://openairdocs.org/faa-owner/BLANTON%20DAVID%20L), [Valley Center, KS](https://openairdocs.org/faa-place/KS/Valley%20Center), S/N I
- [N1805G](https://openairdocs.org/aircraft/N1805G): [Williams Roger A](https://openairdocs.org/faa-owner/WILLIAMS%20ROGER%20A), [Langford, SD](https://openairdocs.org/faa-place/SD/Langford), built 1968, S/N 559
- [N1837X](https://openairdocs.org/aircraft/N1837X): [Cottrell Mark C](https://openairdocs.org/faa-owner/COTTRELL%20MARK%20C), [Leitchfield, KY](https://openairdocs.org/faa-place/KY/Leitchfield), built 2016, S/N 1837
- [N189LJ](https://openairdocs.org/aircraft/N189LJ): [Orlowski Leo V](https://openairdocs.org/faa-owner/ORLOWSKI%20LEO%20V), [Cotter, AR](https://openairdocs.org/faa-place/AR/Cotter), S/N 4685
- [N1941K](https://openairdocs.org/aircraft/N1941K): [Balser Joe](https://openairdocs.org/faa-owner/BALSER%20JOE), [Lafayette, IN](https://openairdocs.org/faa-place/IN/Lafayette), built 2017, S/N 339
- [N235JW](https://openairdocs.org/aircraft/N235JW): [Max Power Aircraft LLC](https://openairdocs.org/faa-owner/MAX%20POWER%20AIRCRAFT%20LLC), [Kenosha, WI](https://openairdocs.org/faa-place/WI/Kenosha), built 2008, S/N 059
- [N246E](https://openairdocs.org/aircraft/N246E): [Beltz Roy C](https://openairdocs.org/faa-owner/BELTZ%20ROY%20C), [Leesville, LA](https://openairdocs.org/faa-place/LA/Leesville), built 2026, S/N 8960
- [N2499M](https://openairdocs.org/aircraft/N2499M): [C & C Sierra LLC](https://openairdocs.org/faa-owner/C%20%26%20C%20SIERRA%20LLC), [Jackson, WY](https://openairdocs.org/faa-place/WY/Jackson), built 1947, S/N 12-1566
- [N26PK](https://openairdocs.org/aircraft/N26PK): [Lauda Thomas J](https://openairdocs.org/faa-owner/LAUDA%20THOMAS%20J), [Des Moines, IA](https://openairdocs.org/faa-place/IA/Des%20Moines), built 1974, S/N 1041-74
- [N404Z](https://openairdocs.org/aircraft/N404Z): [Muehlberg Stephen E](https://openairdocs.org/faa-owner/MUEHLBERG%20STEPHEN%20E), [Newcastle, OK](https://openairdocs.org/faa-place/OK/Newcastle), built 2025, S/N 75-10404
- [N430MD](https://openairdocs.org/aircraft/N430MD): [Mattes Michael A](https://openairdocs.org/faa-owner/MATTES%20MICHAEL%20A), [Churubusco, IN](https://openairdocs.org/faa-place/IN/Churubusco), built 2011, S/N MB-1
- [N4323Y](https://openairdocs.org/aircraft/N4323Y): [Ryer Michael](https://openairdocs.org/faa-owner/RYER%20MICHAEL), [Salem, OR](https://openairdocs.org/faa-place/OR/Salem), built 1996, S/N 011998
- [N43373](https://openairdocs.org/aircraft/N43373): [Hunter Robert M](https://openairdocs.org/faa-owner/HUNTER%20ROBERT%20M), [Rawlins, WY](https://openairdocs.org/faa-place/WY/Rawlins), built 2006, S/N 6-3803
- [N437NG](https://openairdocs.org/aircraft/N437NG): [Aschinger John S](https://openairdocs.org/faa-owner/ASCHINGER%20JOHN%20S), [Beacon, IA](https://openairdocs.org/faa-place/IA/Beacon), built 2011, S/N 6025
- [N455GB](https://openairdocs.org/aircraft/N455GB): [Brs Leasing Inc](https://openairdocs.org/faa-owner/BRS%20LEASING%20INC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1982, S/N 15285455
- [N464BF](https://openairdocs.org/aircraft/N464BF): [Moore John W](https://openairdocs.org/faa-owner/MOORE%20JOHN%20W), [Salome, AZ](https://openairdocs.org/faa-place/AZ/Salome), built 2024, S/N 11-001
- [N477UC](https://openairdocs.org/aircraft/N477UC): [Weber Jennifer R](https://openairdocs.org/faa-owner/WEBER%20JENNIFER%20R), [Bryan, TX](https://openairdocs.org/faa-place/TX/Bryan), built 2013, S/N 001
- [N4DK](https://openairdocs.org/aircraft/N4DK): [Davey Kenneth E](https://openairdocs.org/faa-owner/DAVEY%20KENNETH%20E), [Lake Crystal, MN](https://openairdocs.org/faa-place/MN/Lake%20Crystal), built 1975, S/N 83
- [N5096D](https://openairdocs.org/aircraft/N5096D): [Schrader Thomas R](https://openairdocs.org/faa-owner/SCHRADER%20THOMAS%20R), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), built 2008, S/N 01
- [N5233R](https://openairdocs.org/aircraft/N5233R): [Vranicar Franklin E](https://openairdocs.org/faa-owner/VRANICAR%20FRANKLIN%20E), [Corona Del Mar, CA](https://openairdocs.org/faa-place/CA/Corona%20Del%20Mar), built 1946, S/N 7AC-6567
- [N5240X](https://openairdocs.org/aircraft/N5240X): [Paulson Ricky R](https://openairdocs.org/faa-owner/PAULSON%20RICKY%20R), [Hudson, WI](https://openairdocs.org/faa-place/WI/Hudson), built 1969, S/N 703
- [N5261S](https://openairdocs.org/aircraft/N5261S): [Sharp Russell E](https://openairdocs.org/faa-owner/SHARP%20RUSSELL%20E), [Hartford, AL](https://openairdocs.org/faa-place/AL/Hartford), built 2006, S/N 4870
- [N529LS](https://openairdocs.org/aircraft/N529LS): [Mcnatt Shaun M](https://openairdocs.org/faa-owner/MCNATT%20SHAUN%20M), [Snohomish, WA](https://openairdocs.org/faa-place/WA/Snohomish), built 1969, S/N 727-70
- [N535FL](https://openairdocs.org/aircraft/N535FL): [Jestes Monte G](https://openairdocs.org/faa-owner/JESTES%20MONTE%20G), [Stillwater, OK](https://openairdocs.org/faa-place/OK/Stillwater), built 2005, S/N F-3747
- [N540AC](https://openairdocs.org/aircraft/N540AC): [Christians Ricky P](https://openairdocs.org/faa-owner/CHRISTIANS%20RICKY%20P), [Appleton, WI](https://openairdocs.org/faa-place/WI/Appleton), built 1977, S/N 1206-77
- [N547A](https://openairdocs.org/aircraft/N547A): [Haynes Donald M](https://openairdocs.org/faa-owner/HAYNES%20DONALD%20M), [Springville, AL](https://openairdocs.org/faa-place/AL/Springville), built 2010, S/N R-719
- [N55072](https://openairdocs.org/aircraft/N55072): [Lorenzo John V](https://openairdocs.org/faa-owner/LORENZO%20JOHN%20V), [Tulare, CA](https://openairdocs.org/faa-place/CA/Tulare), built 1978, S/N 1269-78
- [N553BD](https://openairdocs.org/aircraft/N553BD): [Booker Daniel R](https://openairdocs.org/faa-owner/BOOKER%20DANIEL%20R), [Newaygo, MI](https://openairdocs.org/faa-place/MI/Newaygo), built 2020, S/N 75-10566
- [N566RC](https://openairdocs.org/aircraft/N566RC): [Jacques Adam P](https://openairdocs.org/faa-owner/JACQUES%20ADAM%20P), [Weirsdale, FL](https://openairdocs.org/faa-place/FL/Weirsdale), built 2015, S/N 75-8433
- [N57PK](https://openairdocs.org/aircraft/N57PK): [Kitchen Phillip L](https://openairdocs.org/faa-owner/KITCHEN%20PHILLIP%20L), [Waterloo, IL](https://openairdocs.org/faa-place/IL/Waterloo), built 2017, S/N 1PK
- [N5966H](https://openairdocs.org/aircraft/N5966H): [Stasiewicz John A](https://openairdocs.org/faa-owner/STASIEWICZ%20JOHN%20A), [Milwaukee, WI](https://openairdocs.org/faa-place/WI/Milwaukee), built 1949, S/N 16-589
- [N624MM](https://openairdocs.org/aircraft/N624MM): [Lee Douglas A](https://openairdocs.org/faa-owner/LEE%20DOUGLAS%20A), [Truckee, CA](https://openairdocs.org/faa-place/CA/Truckee), S/N M-1-2077
- [N625KB](https://openairdocs.org/aircraft/N625KB): [Doran Jeffrey T](https://openairdocs.org/faa-owner/DORAN%20JEFFREY%20T), [Westerville, OH](https://openairdocs.org/faa-place/OH/Westerville), built 1974, S/N 1057-74
- [N661CP](https://openairdocs.org/aircraft/N661CP): [Southern Aircraft Consultnacy Inc Trustee](https://openairdocs.org/faa-owner/SOUTHERN%20AIRCRAFT%20CONSULTNACY%20INC%20TRUSTEE), [Casper, WY](https://openairdocs.org/faa-place/WY/Casper), built 1969, S/N 661
- [N66AZ](https://openairdocs.org/aircraft/N66AZ): [Via International Inc](https://openairdocs.org/faa-owner/VIA%20INTERNATIONAL%20INC), [Reunion, FL](https://openairdocs.org/faa-place/FL/Reunion), built 1995, S/N 11221
- [N785GM](https://openairdocs.org/aircraft/N785GM): [Janssen Daniel P](https://openairdocs.org/faa-owner/JANSSEN%20DANIEL%20P), [Dayton, OR](https://openairdocs.org/faa-place/OR/Dayton), built 2016, S/N 10785
- [N792T](https://openairdocs.org/aircraft/N792T): [Hbhis LLC](https://openairdocs.org/faa-owner/HBHIS%20LLC), [Gnadenhutten, OH](https://openairdocs.org/faa-place/OH/Gnadenhutten), S/N 1024 74
- [N82VB](https://openairdocs.org/aircraft/N82VB): [Sky Designs LLC](https://openairdocs.org/faa-owner/SKY%20DESIGNS%20LLC), [Kalamazoo, MI](https://openairdocs.org/faa-place/MI/Kalamazoo), built 1967, S/N 491
- [N866CT](https://openairdocs.org/aircraft/N866CT): [Thrash Scott H](https://openairdocs.org/faa-owner/THRASH%20SCOTT%20H), [Hesston, KS](https://openairdocs.org/faa-place/KS/Hesston), built 2000, S/N 930866
- [N89392](https://openairdocs.org/aircraft/N89392): [Story John D](https://openairdocs.org/faa-owner/STORY%20JOHN%20D), [Harrah, OK](https://openairdocs.org/faa-place/OK/Harrah), built 1946, S/N 8424
- [N9131](https://openairdocs.org/aircraft/N9131): [Redmon Ronald D](https://openairdocs.org/faa-owner/REDMON%20RONALD%20D), [Crestwood, KY](https://openairdocs.org/faa-place/KY/Crestwood), built 2011, S/N B1FB
- [N93BY](https://openairdocs.org/aircraft/N93BY): [Pearce Ricky A](https://openairdocs.org/faa-owner/PEARCE%20RICKY%20A), [Parsons, KS](https://openairdocs.org/faa-place/KS/Parsons), built 1968, S/N 129
- [N957DM](https://openairdocs.org/aircraft/N957DM): [Cosbie Lee Roy](https://openairdocs.org/faa-owner/COSBIE%20LEE%20ROY), [Tuscumbia, AL](https://openairdocs.org/faa-place/AL/Tuscumbia), built 2009, S/N 6-6400
- [N972GL](https://openairdocs.org/aircraft/N972GL): [Welch Gary A](https://openairdocs.org/faa-owner/WELCH%20GARY%20A), [Groveland, CA](https://openairdocs.org/faa-place/CA/Groveland), built 2016, S/N 6-8947
- [N994AC](https://openairdocs.org/aircraft/N994AC): [Coonan James A](https://openairdocs.org/faa-owner/COONAN%20JAMES%20A), [Streator, IL](https://openairdocs.org/faa-place/IL/Streator), built 2019, S/N JA395-07-14
- [N998TJ](https://openairdocs.org/aircraft/N998TJ): [Jenkins Teal W](https://openairdocs.org/faa-owner/JENKINS%20TEAL%20W), [Buckeye, AZ](https://openairdocs.org/faa-place/AZ/Buckeye), built 2007, S/N 90866

## NTSB investigations (8)

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 WPR24LA198](https://openairdocs.org/ntsb/WPR24LA198), Jun 13, 2024: Warren B Cox COX Breezy (N409WC), Albuquerque, NM, substantial damage. Probable cause: The pilot’s exceedance of the airplane’s critical angle of attack while maneuvering for landing following a partial loss of engine power after takeoff, which resulted in an aerodynamic stall and loss…
- [NTSB WPR24LA115](https://openairdocs.org/ntsb/WPR24LA115), Mar 15, 2024: Zenith Zodiac CH601 (N43373), Rawlins, WY, substantial damage. Probable cause: The student pilot’s failure to see and avoid powerlines during an unstabilized approach, which resulted the airplane landing short of the runway and coming to rest inverted.
- [NTSB GAA20CA027](https://openairdocs.org/ntsb/GAA20CA027), Oct 11, 2019: Zenith Zenith 601XLB (N235JH), Gastonia, NC, substantial damage. Probable cause: The pilot's failure to latch the canopy before departure, which resulted in the canopy opening and the subsequent loss of airplane control.
- [NTSB GAA16CA007](https://openairdocs.org/ntsb/GAA16CA007), Oct 5, 2015: Bogle Absey C Breezy RLU-1 (N477UC), Bryan, TX, substantial damage. Probable cause: The pilot's excessive descent rate, which resulted in a hard landing and substantial damage.
- [NTSB CEN14FA399](https://openairdocs.org/ntsb/CEN14FA399), Jul 31, 2014: Zimmerman Breezy (N3AZ), Oshkosh, WI, substantial damage, 1 fatal. Probable cause: The pilot’s failure to maintain airplane control during landing while the air traffic controller was simultaneously coordinating the landing of three airplanes on the same runway, which resulted in…
- [NTSB CEN09CA337](https://openairdocs.org/ntsb/CEN09CA337), Jun 4, 2009: Carillon John C Zodiac CH6 (N9093Y), Clinton, AR, substantial damage. Probable cause: The pilot's failure to maintain control of the aircraft during takeoff. Contributing to the accident was his failure to secure a wing fuel panel prior to departure.
- [NTSB DFW08CA112](https://openairdocs.org/ntsb/DFW08CA112), Apr 19, 2008: Haecker Spacewalker (N8071C), Kingsbury, TX, substantial damage. Probable cause: The loss of engine power for undetermined reason. A contributing factor was the lack of suitable terrain for the forced landing.
- [NTSB CHI92LA002](https://openairdocs.org/ntsb/CHI92LA002), Oct 7, 1991: Piper PA-12 (N2499M), Roscoe, IL, substantial damage. Probable cause: OPERATION OF AN AIRCRAFT WITH KNOWN DEFICIENCIES AND DETERIORATION/FAILURE OF THE MAGNETO(S). FACTORS RELATED TO THE ACCIDENT WERE: THE LACK OF AN ANNUAL INSPECTION AND NON-COMPLIANCE WITH AN…

## FAA accident and incident reports (11)

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 20240613021259A](https://openairdocs.org/incident/20240613021259A), Jun 13, 2024: Warren B Cox COX BREEZY (N409WC), Albuquerque, NM, Substantial damage. On June 13, 2024, at or around 12:14 MST, an experimental Cox Breezy, crashed after takeoff adjacent to the runway at Double Eagle II Airport (aeg),…
- [Accident 20240315005219A](https://openairdocs.org/incident/20240315005219A), Mar 15, 2024: Henry Donivan W ZODIAC 601-HDS (N43373), Rawlins, WY, Substantial damage. Pilot intended to perform touch-and-go landing to rwy 4 at krwl- Rawlins municipal airport, Rawlins, Wyoming. On downwind to rwy 4, at 45 degrees from intended…
- [Incident 20231125020049I](https://openairdocs.org/incident/20231125020049I), Nov 25, 2023: South Florida Ultralights Inc VANS RV-9 (N998TJ), Buckeye, AZ, Minor damage. On 11/25/23 at approximately 1720 the aircraft departed on a VFR flight from (27AZ) eagle roost private airpark (aquila, AZ) with a planned destination of…
- [Incident 20191019020249I](https://openairdocs.org/incident/20191019020249I), Oct 19, 2019: Cessna 152 (N455GB), Orlando, FL, No damage. A Cessna 152 aircraft, N455GB during landing rollout on runway 25 at Orlando Executive Airport (korl),veered to the left(due to a locked left brake as reported…
- [Accident 20191011020649A](https://openairdocs.org/incident/20191011020649A), Oct 11, 2019: Ham Joseph F ZENITH 601XLB (N235JH), Gastonia, NC, Substantial damage. [privacy data omitted] Reported that he was performing touch and go maneuvers. On his third touch and go the canopy came open on climb out shortly after…
- [Accident 20151005017689A](https://openairdocs.org/incident/20151005017689A), Oct 5, 2015: Bogle Absey C BREEZY RLU-1 (N477UC), Bryan, TX, Substantial damage. The pilot was observed practicing simulated ?engine out? Emergency landings with the power at idle. Witnesses stated that the pilot developed an excessive sink…
- [Accident 20140731013869A](https://openairdocs.org/incident/20140731013869A), Jul 31, 2014: Zimmerman Arnold BREEZY (N3AZ), Oshkosh, WI, Destroyed, 1 fatal. On July 31, 2014, at 0857 CDT, a Breezy model amateur built airplane, N3AZ, was destroyed when on landing at Oshkosh, Wisconsin, it veered to the right exiting…
- [Accident 20090604009319A](https://openairdocs.org/incident/20090604009319A), Jun 4, 2009: Amtr ZODIAC (N9093Y), Clinton, AR, Substantial damage. On June 04, 2009 at 1100 CST a Zodiac CH601 hds, N90093Y rigistered to [privacy data omitted] took off from Clinton Municipal Airport (kcca) in Clinton…
- [Accident 20080419014579A](https://openairdocs.org/incident/20080419014579A), Apr 19, 2008: Haecke SPACEWALKER2 (N8071C), Kingsbury, TX, Substantial damage. (-23) During descent the aircraft's engine lost power and on several attempts would not restart. Aircraft landed in tree line area approx 90 feet from field.…
- [Accident 19911007045199A](https://openairdocs.org/incident/19911007045199A), Oct 7, 1991: Piper PA12 (N2499M), Roscoe, IL, Substantial damage. Engine quit en route on unauthorized ferry flight. Nosed over in cornfield. Both mags bad.
- [Incident 19840909059209I](https://openairdocs.org/incident/19840909059209I), Sep 9, 1984: Piper PA16 (N5966H), Imbler, OR. Engine quit on climbout. Landed safely off airport. Rod bolt backed off and allowed connecting rod to come off.

## Service difficulty reports (15)

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

- [SDR CA130923016](https://openairdocs.org/sdr/CA130923016), Sep 18, 2013: PIN. SHEARED. (CAN) UPON LANDING AT CJJ4, THE TAIL WHEEL ASSY SWIVEL PIN SHEARED CAUSING THE WHEEL ASSY TO DEPART FROM ACFT AND ACFT STOPPED SHORTLY WHILE TAXIING.
- [SDR CA110110003](https://openairdocs.org/sdr/CA110110003), Dec 10, 2010: LONGERON. CRACKED. ON A ROUTINE 100 HOUR INSPECTION, IT WAS FOUND THAT THE FUSELAGE LONGERON WAS CRACKED UNDER THE MAIN LANDING GEAR ATTACH BOLT ON RIGHT GEAR LEG. THESE ARE THE S
- [SDR 2007FA0000416](https://openairdocs.org/sdr/2007FA0000416), Apr 15, 2007: CARBURETOR. CONTAMINATED. DURING INSPECTION OF THE CARBURETOR, DISCOVERED FLAKES OF WHAT APPEARS TO BE METAL IN THE GASCOLATOR SCREEN. ALSO, OBSERVED SOME SPECS OF RED MATERIAL ABOUT THE
- [SDR 2006FA0000595](https://openairdocs.org/sdr/2006FA0000595), Jun 2, 2006: SPAR. CRACKED. REQUIRED INSPECTION OF WOODEN WING SPARS IN ACCORDANCE WITH AD. REVEALED A COMPRESSION CRACK IN THE LT WING FWD SPAR AT THE TOP OB OF WING STRUT ATTACH DOUBLER 
- [SDR AUS20040105](https://openairdocs.org/sdr/AUS20040105), Jan 22, 2004: SPAR. CRACKED. (AUS) RT WING FRONT AND REAR SPARS CRACKED. CRACKS APPEAR TO ALIGN WITH THE ATTACHMENT FITTING BOLT HOLES. SPARS ARE CONSTRUCTED FROM TIMBER. FOUND DURING INSPE
- [SDR 2004FA0000393](https://openairdocs.org/sdr/2004FA0000393), Dec 27, 2003: COTTER PIN. SHEARED. COTTER KEY USED TO SECURE THE CLEVIS PIN BETWEEN THE RT RUDDER PEDAL AND RT BRAKE MASTER CYLINDER FAILED. THE HEAD OR TANGS OF THE COTTER KEY STRIKE AN ANGLE BR
- [SDR Z372003F00001](https://openairdocs.org/sdr/Z372003F00001), Oct 1, 2003: IMPULSE COUPLING. BROKEN. PILOT REPORTED LOSS OF POWER ON TAKEOFF, RETURNED TO AIRPORT. AFTER LANDING HE AGAIN CHECKED HIS MAG DROP AND REPORTED HIS LT MAG DROP TO BE ABOUT 300 RPM. FURT
- [SDR CA021029008](https://openairdocs.org/sdr/CA021029008), Sep 25, 2002: CABLE. MISINSTALLED. (CAN) RT FORWARD RUDDER CABLE ATTACH MICO-SLEEVE FAILED DURING TAXI. ON AME INSPECTION MICO-SLEEVE FOUND TO NOT BE CRIMPED DOWN TO PROPER DIMENSION. MICO-SLEEVE
- [SDR 2001FA0000558](https://openairdocs.org/sdr/2001FA0000558), Oct 26, 2001: STUD. BROKEN. BROKEN CYLINDER BASE STUDS, 5 STUDS BROKEN ON NR 1 CYLINDER, FOUND MIS-TORQUED ON NR 2, NR 3, AND NR 4, ALSO.(K)
- [SDR CA010522018](https://openairdocs.org/sdr/CA010522018), May 7, 2001: CLEVIS BOLT. BENT. (CAN) BRAKES WERE NOT AS RESPONSIVE AS USUAL. UPON INSPECTION RT MASTER BRAKE CYLINDER CLEVIS BOLT FOUND TO BE BENT.
- [SDR 20001229SH011](https://openairdocs.org/sdr/20001229SH011), Dec 14, 2000: FLOAT. DAMAGED. CARBURETOR WAS OVERFILLING. UPON DISASSEMBLY, FOUND CARBURETOR GASKET, PN 16-B85, SAGGING AND THE METAL FLOAT, WHERE THE NEEDLE SEAT RUBS, WORN EXCESSIVELY AT T
- [SDR 98ZZZX926](https://openairdocs.org/sdr/98ZZZX926), Feb 10, 1998: CRANKSHAFT. CRACKED. PART REMOVED FROM INVENTORY FOR PRECAUTIONARY MPI. CRANKSHAFT WAS GROUND AND POLISHED BY AIR AGENCY AND FOUND TO HAVE CRACKS IN THE JOURNAL RADII.
- [SDR CA971231022](https://openairdocs.org/sdr/CA971231022), Dec 29, 1997: CAMSHAFT. WORN. (CAN) ENGINE CAMSHAFT FOUND WORN. ENGINE CAMSHAFT REPLACED.
- [SDR CA970923001](https://openairdocs.org/sdr/CA970923001), Aug 22, 1997: CYLINDER. FAILED. (CAN) FACTORY NEW CYLINDER INSTALLED ON ANNUAL INSPECTION. AIRCRAFT TEST FLOWN AND PARKED. NEXT MORNING ON START UP THE ENGINE RAN ROUGH. INVESTIGATION FOUND NR
- [SDR 97ZZZX1983](https://openairdocs.org/sdr/97ZZZX1983), Apr 15, 1997: FLOAT. FAILED. AFTER OPENING UP CARBURETOR TO REPLACE TWO-PIECE VENTURI, NOTICED FLOAT WAS BRO KEN, ONE-HALF OF IT LAYING IN BOWL. REPLACED WITH NEW METAL TYPE.

## STCs that may be installed (OpenAirDocs) (32)

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-235 Series
- [STC SE208SO](https://openairdocs.org/stc/SE208SO): Installation of ice indicator in the carburetor. LegacySTC.com. Lists O-235 Series
- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd
- [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 SE2393CE](https://openairdocs.org/stc/SE2393CE): 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-235 Series
- [STC SE03232CH](https://openairdocs.org/stc/SE03232CH): Installation of Engine Preheat Kit p/n TA2925-1 for 115 volt application. Hartzell Propeller Inc
- [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 SE00218NY](https://openairdocs.org/stc/SE00218NY): Replacement of Lycoming starter with SKY-TEC 12 volt starter installed. Hartzell Engine Technologies, LLC. Lists O-235 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-235 Series
- [STC SE888GL](https://openairdocs.org/stc/SE888GL): Replacement of Bendix S4LN-20, -21, -1209, or -1227 model magnetos with Slick model 4250 and 4251 magnetos. Champion Aerospace LLC
- [STC SE8707SW](https://openairdocs.org/stc/SE8707SW): Alteration of Lycoming O-235 engine to allow use of ethanol fuel. Shauck Dr Maxwell E Jr
- [STC SE01930NY](https://openairdocs.org/stc/SE01930NY): Installation of Casper Labs 90 degree oil filter housing adapter. Casper Labs Inc
- [STC SE01943CH](https://openairdocs.org/stc/SE01943CH): Add the following approved fuels: unleaded automotive gasoline 87 minimum antiknock index, per ASTM Specification D-439 or D-4814 of any volatility class, A through E, or 82UL AVGAS per ASTM D-6227. Experimental Aircraft Association Inc
- [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 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-235 Series
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation
- [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co. Lists O-235 Series
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists O-235 Series
- [STC SE2035CE](https://openairdocs.org/stc/SE2035CE): Add the following approved fuel: unleaded automotive gasoline, 87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index (RON+MON)/2. Intermixing with aviation gasoline also approved. Petersen Aviation Inc
- [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-235 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-235 Series
- [STC SE1976SW](https://openairdocs.org/stc/SE1976SW): Manufacture of new cylinder barrels and rebarreling with original cylinder head. Gary Aerospace Corp. Lists O-235 Series
- [STC SE5791SW](https://openairdocs.org/stc/SE5791SW): Installation of any or all engine components parts or modifications on Avco 0-235 series engines. Airmotive Engineering Corp. Lists O-235 Series
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists O-235 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-235 Series

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