# Lycoming O-235-C - Type: Engine model (FAA registry) - Registry code: 42397 - Manufacturer (registry): LYCOMING - Model: O-235-C - Engine type: Reciprocating - Power: 115 hp - Data sheet: [TCDS E-223](https://openairdocs.org/tcds/E-223) (OpenAirDocs) - Holder: Lycoming Engines - Installed in: 31 registered aircraft - Page: https://openairdocs.org/engine/lycoming-o-235-c 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 98-01-06](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 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 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 Effective Jan 16, 1969 Historical (superseded or no longer in force): - [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and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 ## Information bulletins (advisory) (2) - [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 ## Registered aircraft (31) - [N1055E](https://openairdocs.org/aircraft/N1055E): [Red Aero LLC](https://openairdocs.org/faa-owner/RED%20AERO%20LLC), [Scottsdale, AZ](https://openairdocs.org/faa-place/AZ/Scottsdale), built 1977, S/N 1208-77 - [N134GS](https://openairdocs.org/aircraft/N134GS): [Swain Raymond B](https://openairdocs.org/faa-owner/SWAIN%20RAYMOND%20B), [Mansfield, TX](https://openairdocs.org/faa-place/TX/Mansfield), S/N WR-296-S-149 - [N155PW](https://openairdocs.org/aircraft/N155PW): [Jansonius Rex C](https://openairdocs.org/faa-owner/JANSONIUS%20REX%20C), [Geneva, IA](https://openairdocs.org/faa-place/IA/Geneva), built 2007, S/N 001 - [N1926C](https://openairdocs.org/aircraft/N1926C): [Loes Todd A](https://openairdocs.org/faa-owner/LOES%20TODD%20A), [Waterloo, IA](https://openairdocs.org/faa-place/IA/Waterloo), built 2017, S/N WR294S118 - [N235AX](https://openairdocs.org/aircraft/N235AX): [Beebe Richard W](https://openairdocs.org/faa-owner/BEEBE%20RICHARD%20W), [Cortland, NY](https://openairdocs.org/faa-place/NY/Cortland), built 2011, S/N CCK-001 - [N26295](https://openairdocs.org/aircraft/N26295): [Mott William R](https://openairdocs.org/faa-owner/MOTT%20WILLIAM%20R), [Beach Lake, PA](https://openairdocs.org/faa-place/PA/Beach%20Lake), built 1940, S/N 7582 - [N3044L](https://openairdocs.org/aircraft/N3044L): [Mack Anita T](https://openairdocs.org/faa-owner/MACK%20ANITA%20T), [Scott Afb, IL](https://openairdocs.org/faa-place/IL/Scott%20Afb), built 1942, S/N 5-1410 - [N32140](https://openairdocs.org/aircraft/N32140): [Dura Timothy L](https://openairdocs.org/faa-owner/DURA%20TIMOTHY%20L), [Henderson, NV](https://openairdocs.org/faa-place/NV/Henderson), S/N 65084 - [N3932D](https://openairdocs.org/aircraft/N3932D): [Nelson Christopher H](https://openairdocs.org/faa-owner/NELSON%20CHRISTOPHER%20H), [Parma, ID](https://openairdocs.org/faa-place/ID/Parma), built 2012, S/N 01 - [N476A](https://openairdocs.org/aircraft/N476A): [Shackelford John S Jr](https://openairdocs.org/faa-owner/SHACKELFORD%20JOHN%20S%20JR), [Roanoke, TX](https://openairdocs.org/faa-place/TX/Roanoke), built 2009, S/N 89 - [N487TW](https://openairdocs.org/aircraft/N487TW): [Wood Thomas H](https://openairdocs.org/faa-owner/WOOD%20THOMAS%20H), [Granbury, TX](https://openairdocs.org/faa-place/TX/Granbury), built 2005, S/N 994 - [N491BG](https://openairdocs.org/aircraft/N491BG): [Shogren Coleman D](https://openairdocs.org/faa-owner/SHOGREN%20COLEMAN%20D), [Yakima, WA](https://openairdocs.org/faa-place/WA/Yakima), built 2005, S/N 001 - [N4FW](https://openairdocs.org/aircraft/N4FW): [Douma Todd D](https://openairdocs.org/faa-owner/DOUMA%20TODD%20D), [Hortonville, WI](https://openairdocs.org/faa-place/WI/Hortonville), built 1975, S/N 1 - [N552AT](https://openairdocs.org/aircraft/N552AT): [Hilliard Paul Kevin](https://openairdocs.org/faa-owner/HILLIARD%20PAUL%20KEVIN), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita), built 2008, S/N 6-6305 - [N59920](https://openairdocs.org/aircraft/N59920): [Mlre Inc](https://openairdocs.org/faa-owner/MLRE%20INC), [Dania Beach, FL](https://openairdocs.org/faa-place/FL/Dania%20Beach), built 1946, S/N 13340 - [N605LY](https://openairdocs.org/aircraft/N605LY): [Lofstrom Caleb J](https://openairdocs.org/faa-owner/LOFSTROM%20CALEB%20J), [Wasilla, AK](https://openairdocs.org/faa-place/AK/Wasilla), built 2020, S/N 001 - [N60XT](https://openairdocs.org/aircraft/N60XT): [Morgan Cody D](https://openairdocs.org/faa-owner/MORGAN%20CODY%20D), [Portage Des Sioux, MO](https://openairdocs.org/faa-place/MO/Portage%20Des%20Sioux), built 1998, S/N 900 - [N646TD](https://openairdocs.org/aircraft/N646TD): [Drefs Theodore J](https://openairdocs.org/faa-owner/DREFS%20THEODORE%20J), [Shelby, IA](https://openairdocs.org/faa-place/IA/Shelby), built 2025, S/N C75-10086 - [N663WW](https://openairdocs.org/aircraft/N663WW): [Winters Jacky L](https://openairdocs.org/faa-owner/WINTERS%20JACKY%20L), [Nashville, TN](https://openairdocs.org/faa-place/TN/Nashville), built 2013, S/N 6-5300 - [N678DC](https://openairdocs.org/aircraft/N678DC): [Taylor Ronald W](https://openairdocs.org/faa-owner/TAYLOR%20RONALD%20W), [Winthrop, ME](https://openairdocs.org/faa-place/ME/Winthrop), built 2013, S/N DC-4 - [N691CP](https://openairdocs.org/aircraft/N691CP): [Prindle Steven E](https://openairdocs.org/faa-owner/PRINDLE%20STEVEN%20E), [Mililani, HI](https://openairdocs.org/faa-place/HI/Mililani), built 2010, S/N 287 - [N714C](https://openairdocs.org/aircraft/N714C): [Dienst Eric L](https://openairdocs.org/faa-owner/DIENST%20ERIC%20L), [Maple Park, IL](https://openairdocs.org/faa-place/IL/Maple%20Park), built 1967, S/N 714 - [N750ZL](https://openairdocs.org/aircraft/N750ZL): [Johnson Chad T](https://openairdocs.org/faa-owner/JOHNSON%20CHAD%20T), [Roseau, MN](https://openairdocs.org/faa-place/MN/Roseau), built 2012, S/N 75-7605 - [N7723V](https://openairdocs.org/aircraft/N7723V): [Kearney Stephen L](https://openairdocs.org/faa-owner/KEARNEY%20STEPHEN%20L), [Oakland, CA](https://openairdocs.org/faa-place/CA/Oakland), built 2003, S/N 2205 - [N809BA](https://openairdocs.org/aircraft/N809BA): [Austein Amy S](https://openairdocs.org/faa-owner/AUSTEIN%20AMY%20S), [Hernando, MS](https://openairdocs.org/faa-place/MS/Hernando), S/N 001 - [N826WH](https://openairdocs.org/aircraft/N826WH): [Sneed Eugene](https://openairdocs.org/faa-owner/SNEED%20EUGENE), [Russell Springs, KY](https://openairdocs.org/faa-place/KY/Russell%20Springs), built 2011, S/N 6-6890 - [N87CL](https://openairdocs.org/aircraft/N87CL): [Leiffert Chad L](https://openairdocs.org/faa-owner/LEIFFERT%20CHAD%20L), [Pleasant Hill, IA](https://openairdocs.org/faa-place/IA/Pleasant%20Hill), built 2008, S/N C960Z0170 - [N8976R](https://openairdocs.org/aircraft/N8976R): [Steenrod Kenneth Allen](https://openairdocs.org/faa-owner/STEENROD%20KENNETH%20ALLEN), [Parsons, KS](https://openairdocs.org/faa-place/KS/Parsons), built 1979, S/N GGV 001 - [N903KT](https://openairdocs.org/aircraft/N903KT): [Garnier Brent A](https://openairdocs.org/faa-owner/GARNIER%20BRENT%20A), [Fairbanks, AK](https://openairdocs.org/faa-place/AK/Fairbanks), built 1961, S/N 22-8882 - [N9307X](https://openairdocs.org/aircraft/N9307X): [Skagit Airport Eaa Chapter 818 Washington](https://openairdocs.org/faa-owner/SKAGIT%20AIRPORT%20EAA%20CHAPTER%20818%20WASHINGTON), [Burlington, WA](https://openairdocs.org/faa-place/WA/Burlington), built 2007, S/N 6519 - [N9855Y](https://openairdocs.org/aircraft/N9855Y): [Bothe Larry S](https://openairdocs.org/faa-owner/BOTHE%20LARRY%20S), [Seymour, IN](https://openairdocs.org/faa-place/IN/Seymour), built 1961, S/N 7FC-406 ## NTSB investigations (2) 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 GAA15CA091](https://openairdocs.org/ntsb/GAA15CA091), May 23, 2015: Lefever Paul M RV12 (N198PR), Caledonia, MO, substantial damage. Probable cause: The pilot's selection of unsuitable terrain for a precautionary landing, which resulted in a nose over. - [NTSB WPR13CA259](https://openairdocs.org/ntsb/WPR13CA259), May 26, 2013: Dressen Escape LS (N3932D), Fruitland, ID, substantial damage. Probable cause: The pilot’s failure to maintain airplane control during the landing roll as a result of the parking brake lever not being positioned in the full off position. ## FAA accident and incident reports (3) 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 20230527007559I](https://openairdocs.org/incident/20230527007559I), May 27, 2023: Gotschall Bruce KITFOX SERIES V (N491BG), Yakima, WA, Minor damage. Aircraft landed runway 27 and made a ground loop, ran off the runway to the left. Minor damage and no injuries. - [Accident 20150523007939A](https://openairdocs.org/incident/20150523007939A), May 23, 2015: Vans RV12 (N198PR), Caledonia, MO, Substantial damage. [privacy data omitted] Departed fredericktown airport (H88) around 1100 for a recreational flight to farmington, MO. He stated that around 1130 he realized he… - [Accident 20130525008329A](https://openairdocs.org/incident/20130525008329A), May 25, 2013: Dressen Donald L ESCAPE LS (N3932D), Fruitland, ID, Substantial damage. On 5/25/2013, an experimental airplane, N3932D, flipped onto its back during landing rollout due to excessive wheel breaking. The pilot stated that the brakes… ## Service difficulty reports (4) As reported by operators and repair stations, by the model named in the report. - [SDR 2002FA0000325](https://openairdocs.org/sdr/2002FA0000325), Feb 25, 2002: PROPELLER. SEPARATED. WHILE CRUISING AT 5000 FEET THE PILOT REPORTED SEVERE VIBRATION. AFTER PERFORMING AN UNEVENTFUL LANDING AND ENGINE SHUT DOWN, THE PILOT OBSERVED THAT APPROXIMAT - [SDR 2001FA0000409](https://openairdocs.org/sdr/2001FA0000409), Sep 4, 2001: MUFFLER. CRACKED. DURING ANNUAL INSPECTION, MUFFLER WAS FOUND CRACKED IN THE AREA WHERE TAIL PIPE IS WELDED TO CAN. 742 HOURS SINCE LAST INSPECTION. (ATTACHED PHOTOS) - [SDR CA991210005](https://openairdocs.org/sdr/CA991210005), Jan 11, 1999: COMPUTER. FAILED. (CAN) ERRONIOUS DATA AND DATA BASE OPERATIONS IN CANADIAN AIRSPACE. ITEM IS TSO APPROVED MFG. AIRSPACE CLASSIFICATION ERRORS, VOR / AIRPORT & ARTECC ERRORS, EME - [SDR 98ZZZX4496](https://openairdocs.org/sdr/98ZZZX4496), Nov 5, 1998: FLEX LINE. FAILED. REPLACED HOSE AT FUEL TANK BECAUSE OF AGB. REPLACED HOSE WAS MADE UP OF MIL-H-6000, DATED 12-95. EIGHTEEN MONTHS AFTER INSTALLATION, HOSE BECAME SOFT, DETERIORA ## STCs that may be installed (OpenAirDocs) (25) 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 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 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 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 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 --- 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.