# Lycoming 0-235 series

- Type: Engine model (FAA registry)
- Registry code: 41505
- Manufacturer (registry): LYCOMING
- Model: 0-235 SERIES
- Engine type: 4 cycle
- Power: 115 hp
- Data sheet: [TCDS E-223](https://openairdocs.org/tcds/E-223) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 6,133 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-0-235-series

The registry names only the engine series, so ADs for every model in the series are matched.

## 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 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 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 95-26-02](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 95-03-10](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 88-02-04](https://openairdocs.org/ad/88-02-04): Carburetors · Lycoming Engines O-235-C1C, O-235-H2C, O-235-L2A and 4 more. Effective Feb 1, 1988
- [AD 81-16-05](https://openairdocs.org/ad/81-16-05): Magnetos · Lycoming Engines AEIO-320-E1B, AEIO-320-E2B, AEIO-360-B1G6 and 234 more. Effective Aug 6, 1981
- [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 78-25-01](https://openairdocs.org/ad/78-25-01): Condensers · Lycoming Engines O-235-L2C. Effective Dec 8, 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 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) (5)

- [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
- [SAIB NE-05-89](https://openairdocs.org/saib/NE-05-89): . Issued Sep 30, 2005
- [SAIB NE-01-22](https://openairdocs.org/saib/NE-01-22): . Issued May 11, 2001

## Registered aircraft (6,133, first 50)

- [N1008E](https://openairdocs.org/aircraft/N1008E): [Edwards Gregory S](https://openairdocs.org/faa-owner/EDWARDS%20GREGORY%20S), [Guthrie, OK](https://openairdocs.org/faa-place/OK/Guthrie), S/N 1202-77
- [N100BV](https://openairdocs.org/aircraft/N100BV): [Howard Keith](https://openairdocs.org/faa-owner/HOWARD%20KEITH), [Fayetteville, NC](https://openairdocs.org/faa-place/NC/Fayetteville), built 1978, S/N 38-78A0262
- [N100XX](https://openairdocs.org/aircraft/N100XX): [Askew Stell Blake III](https://openairdocs.org/faa-owner/ASKEW%20STELL%20BLAKE%20III), [Durham, NC](https://openairdocs.org/faa-place/NC/Durham), built 1975, S/N AA1B-0578
- [N1010R](https://openairdocs.org/aircraft/N1010R): [Kaneair LLC](https://openairdocs.org/faa-owner/KANEAIR%20LLC), [Hayes, VA](https://openairdocs.org/faa-place/VA/Hayes), built 1968, S/N 591
- [N1011T](https://openairdocs.org/aircraft/N1011T): [Pedersen Michael](https://openairdocs.org/faa-owner/PEDERSEN%20MICHAEL), [Bakersfield, CA](https://openairdocs.org/faa-place/CA/Bakersfield), built 1972, S/N 863-72
- [N1012G](https://openairdocs.org/aircraft/N1012G): [Forwalt Lucas A](https://openairdocs.org/faa-owner/FORWALT%20LUCAS%20A), [Chesapeake, VA](https://openairdocs.org/faa-place/VA/Chesapeake), built 1969, S/N AA1-0122
- [N1014E](https://openairdocs.org/aircraft/N1014E): [Meade Lance M](https://openairdocs.org/faa-owner/MEADE%20LANCE%20M), [Stinson Beach, CA](https://openairdocs.org/faa-place/CA/Stinson%20Beach), built 1977, S/N 1203-77
- [N101AT](https://openairdocs.org/aircraft/N101AT): [Zrelak Patrick DBA](https://openairdocs.org/faa-owner/ZRELAK%20PATRICK%20DBA), [Apple Valley, CA](https://openairdocs.org/faa-place/CA/Apple%20Valley), built 1977, S/N 15280208
- [N101BV](https://openairdocs.org/aircraft/N101BV): [Mundwiler David](https://openairdocs.org/faa-owner/MUNDWILER%20DAVID), [Hemet, CA](https://openairdocs.org/faa-place/CA/Hemet), S/N 674
- [N101SX](https://openairdocs.org/aircraft/N101SX): [Cattrell Jeff S](https://openairdocs.org/faa-owner/CATTRELL%20JEFF%20S), [Church Hill, TN](https://openairdocs.org/faa-place/TN/Church%20Hill), built 2002, S/N 576
- [N1021E](https://openairdocs.org/aircraft/N1021E): [Young David S](https://openairdocs.org/faa-owner/YOUNG%20DAVID%20S), [San Jose, CA](https://openairdocs.org/faa-place/CA/San%20Jose), built 1977, S/N 1204-77
- [N1027](https://openairdocs.org/aircraft/N1027): [Wilson David R](https://openairdocs.org/faa-owner/WILSON%20DAVID%20R), [Riggins, ID](https://openairdocs.org/faa-place/ID/Riggins), built 1992, S/N PT1027
- [N102EL](https://openairdocs.org/aircraft/N102EL): [Furniss Kenneth F](https://openairdocs.org/faa-owner/FURNISS%20KENNETH%20F), [Orondo, WA](https://openairdocs.org/faa-place/WA/Orondo), built 1999, S/N 75005LF
- [N102UC](https://openairdocs.org/aircraft/N102UC): [West Valley Flying Club](https://openairdocs.org/faa-owner/WEST%20VALLEY%20FLYING%20CLUB), [Palo Alto, CA](https://openairdocs.org/faa-place/CA/Palo%20Alto), built 1980, S/N 15284832
- [N1031S](https://openairdocs.org/aircraft/N1031S): [Redmon James A](https://openairdocs.org/faa-owner/REDMON%20JAMES%20A), [Frisco, TX](https://openairdocs.org/faa-place/TX/Frisco), built 1977, S/N 15279996
- [N1034E](https://openairdocs.org/aircraft/N1034E): [Nexga Aircraft Inc](https://openairdocs.org/faa-owner/NEXGA%20AIRCRAFT%20INC), [Greensboro, NC](https://openairdocs.org/faa-place/NC/Greensboro), built 1977, S/N 1205-77
- [N103BS](https://openairdocs.org/aircraft/N103BS): [Fixed Gear LLC](https://openairdocs.org/faa-owner/FIXED%20GEAR%20LLC), [Sherwood, AR](https://openairdocs.org/faa-place/AR/Sherwood), built 1947, S/N 123988
- [N103UC](https://openairdocs.org/aircraft/N103UC): [426th Aero Squadron LLC](https://openairdocs.org/faa-owner/426TH%20AERO%20SQUADRON%20LLC), [Cropwell, AL](https://openairdocs.org/faa-place/AL/Cropwell), built 1980, S/N 15284243
- [N1042E](https://openairdocs.org/aircraft/N1042E): [Perez Alexander](https://openairdocs.org/faa-owner/PEREZ%20ALEXANDER), [Palmer, AK](https://openairdocs.org/faa-place/AK/Palmer), built 1977, S/N 1207-77
- [N1047X](https://openairdocs.org/aircraft/N1047X): [Huber Frank B](https://openairdocs.org/faa-owner/HUBER%20FRANK%20B), [Maple Grove, MN](https://openairdocs.org/faa-place/MN/Maple%20Grove), built 1977, S/N AA1C-0050
- [N1048C](https://openairdocs.org/aircraft/N1048C): [Palmer Gretchen](https://openairdocs.org/faa-owner/PALMER%20GRETCHEN), [Knoxville, TN](https://openairdocs.org/faa-place/TN/Knoxville), built 1976, S/N 1153-76
- [N104D](https://openairdocs.org/aircraft/N104D): [Miller Charles H Jr](https://openairdocs.org/faa-owner/MILLER%20CHARLES%20H%20JR), [Cape Carteret, NC](https://openairdocs.org/faa-place/NC/Cape%20Carteret), S/N A101
- [N104T](https://openairdocs.org/aircraft/N104T): [Carey Daniel F](https://openairdocs.org/faa-owner/CAREY%20DANIEL%20F), [Rockville Centre, NY](https://openairdocs.org/faa-place/NY/Rockville%20Centre), S/N 18-2218
- [N105JC](https://openairdocs.org/aircraft/N105JC): [Heckathorn Chad W Trustee](https://openairdocs.org/faa-owner/HECKATHORN%20CHAD%20W%20TRUSTEE), [Elk Point, SD](https://openairdocs.org/faa-place/SD/Elk%20Point), built 1950, S/N 18-308
- [N105T](https://openairdocs.org/aircraft/N105T): [Peterson Nathan C](https://openairdocs.org/faa-owner/PETERSON%20NATHAN%20C), [Cordova, TN](https://openairdocs.org/faa-place/TN/Cordova), built 1952, S/N 18-2219
- [N105UC](https://openairdocs.org/aircraft/N105UC): [Stem Aviation Academy](https://openairdocs.org/faa-owner/STEM%20AVIATION%20ACADEMY), [Carlsbad, CA](https://openairdocs.org/faa-place/CA/Carlsbad), built 1985, S/N 15285998
- [N106UC](https://openairdocs.org/aircraft/N106UC): [Insuraclaim LLC](https://openairdocs.org/faa-owner/INSURACLAIM%20LLC), [Boca Raton, FL](https://openairdocs.org/faa-place/FL/Boca%20Raton), built 1981, S/N 15285419
- [N1073E](https://openairdocs.org/aircraft/N1073E): [Murphys Flying Service LLC](https://openairdocs.org/faa-owner/MURPHYS%20FLYING%20SERVICE%20LLC), [Thomasville, GA](https://openairdocs.org/faa-place/GA/Thomasville), built 1977, S/N 1209-77
- [N1075E](https://openairdocs.org/aircraft/N1075E): [Weiland Adam W](https://openairdocs.org/faa-owner/WEILAND%20ADAM%20W), [Evergreen, CO](https://openairdocs.org/faa-place/CO/Evergreen), built 1977, S/N 1214-77
- [N107JM](https://openairdocs.org/aircraft/N107JM): [Cyphers Sam K](https://openairdocs.org/faa-owner/CYPHERS%20SAM%20K), [Sequim, WA](https://openairdocs.org/faa-place/WA/Sequim), built 2005, S/N 6-5658
- [N107RZ](https://openairdocs.org/aircraft/N107RZ): [Shick Kenneth W](https://openairdocs.org/faa-owner/SHICK%20KENNETH%20W), [Oxnard, CA](https://openairdocs.org/faa-place/CA/Oxnard), S/N 685
- [N108PC](https://openairdocs.org/aircraft/N108PC): built 1948, S/N 16-322
- [N108T](https://openairdocs.org/aircraft/N108T): [Olson Isaac B](https://openairdocs.org/faa-owner/OLSON%20ISAAC%20B), [Forestburg, SD](https://openairdocs.org/faa-place/SD/Forestburg), built 1952, S/N 18-2222
- [N1090E](https://openairdocs.org/aircraft/N1090E): [Crouse John A](https://openairdocs.org/faa-owner/CROUSE%20JOHN%20A), [Sterling, AK](https://openairdocs.org/faa-place/AK/Sterling), built 1977, S/N 1210-77
- [N109CF](https://openairdocs.org/aircraft/N109CF): [Marigi William Kihara](https://openairdocs.org/faa-owner/MARIGI%20WILLIAM%20KIHARA), [Worcester, MA](https://openairdocs.org/faa-place/MA/Worcester), built 1978, S/N 15282332
- [N109RW](https://openairdocs.org/aircraft/N109RW): [Mcpherson Michael A](https://openairdocs.org/faa-owner/MCPHERSON%20MICHAEL%20A), [Stephenville, TX](https://openairdocs.org/faa-place/TX/Stephenville), built 1971, S/N AA1A-0250
- [N10BW](https://openairdocs.org/aircraft/N10BW): [Ace Aircraft Co Inc](https://openairdocs.org/faa-owner/ACE%20AIRCRAFT%20CO%20INC), [Toccoa, GA](https://openairdocs.org/faa-place/GA/Toccoa), built 1992, S/N 9665
- [N10FA](https://openairdocs.org/aircraft/N10FA): [Flanigan Marie C](https://openairdocs.org/faa-owner/FLANIGAN%20MARIE%20C), [Lockport, NY](https://openairdocs.org/faa-place/NY/Lockport), built 1972, S/N AA1A-0337
- [N10GR](https://openairdocs.org/aircraft/N10GR): [Hannagan Collin](https://openairdocs.org/faa-owner/HANNAGAN%20COLLIN), [Saint Elmo, IL](https://openairdocs.org/faa-place/IL/Saint%20Elmo), S/N 1
- [N10VF](https://openairdocs.org/aircraft/N10VF): [Ace Aircraft Leasing Inc](https://openairdocs.org/faa-owner/ACE%20AIRCRAFT%20LEASING%20INC), [Nazareth, PA](https://openairdocs.org/faa-place/PA/Nazareth), built 1978, S/N 15282873
- [N10XR](https://openairdocs.org/aircraft/N10XR): [Ratzlaff Ray P](https://openairdocs.org/faa-owner/RATZLAFF%20RAY%20P), [Redmond, OR](https://openairdocs.org/faa-place/OR/Redmond), built 1990, S/N 1845-L
- [N1102E](https://openairdocs.org/aircraft/N1102E): [Lee Robert J Trustee](https://openairdocs.org/faa-owner/LEE%20ROBERT%20J%20TRUSTEE), [Denver, NC](https://openairdocs.org/faa-place/NC/Denver), built 1977, S/N 1211-77
- [N1103E](https://openairdocs.org/aircraft/N1103E): [Phantom Flyer LLC](https://openairdocs.org/faa-owner/PHANTOM%20FLYER%20LLC), [Yelm, WA](https://openairdocs.org/faa-place/WA/Yelm), built 1977, S/N 1212-77
- [N11071](https://openairdocs.org/aircraft/N11071): [Foster Frank B](https://openairdocs.org/faa-owner/FOSTER%20FRANK%20B), [Goldsboro, NC](https://openairdocs.org/faa-place/NC/Goldsboro), built 1965, S/N 7ECA-51
- [N11085](https://openairdocs.org/aircraft/N11085): [Morgan Richard L](https://openairdocs.org/faa-owner/MORGAN%20RICHARD%20L), [Chula Vista, CA](https://openairdocs.org/faa-place/CA/Chula%20Vista), built 1966, S/N 264
- [N1109J](https://openairdocs.org/aircraft/N1109J): [Orton Aviation LLC](https://openairdocs.org/faa-owner/ORTON%20AVIATION%20LLC), [Walker, MN](https://openairdocs.org/faa-place/MN/Walker), built 1950, S/N 18-392
- [N1114E](https://openairdocs.org/aircraft/N1114E): [Getz Darrel P](https://openairdocs.org/faa-owner/GETZ%20DARREL%20P), [Colfax, WA](https://openairdocs.org/faa-place/WA/Colfax), built 1977, S/N 1213-77
- [N111RK](https://openairdocs.org/aircraft/N111RK): [San Carlos Flight Center Inc](https://openairdocs.org/faa-owner/SAN%20CARLOS%20FLIGHT%20CENTER%20INC), [San Carlos, CA](https://openairdocs.org/faa-place/CA/San%20Carlos), built 1977, S/N 15280874
- [N1121W](https://openairdocs.org/aircraft/N1121W): [Deleon Joseph M](https://openairdocs.org/faa-owner/DELEON%20JOSEPH%20M), [Saint Petersburg, FL](https://openairdocs.org/faa-place/FL/Saint%20Petersburg), built 1947, S/N 12-2429
- [N112R](https://openairdocs.org/aircraft/N112R): [Sarlan Robert A](https://openairdocs.org/faa-owner/SARLAN%20ROBERT%20A), [Cameron Park, CA](https://openairdocs.org/faa-place/CA/Cameron%20Park), S/N 0112R

All 6,133: https://openairdocs.org/engine/lycoming-0-235-series/aircraft.md

## NTSB investigations (4,607, 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 CEN26LA330](https://openairdocs.org/ntsb/CEN26LA330), Sep 29, 2026: Cessna 152 (N69009), Bolingbrook, IL, investigation ongoing
- [NTSB WPR26LA332](https://openairdocs.org/ntsb/WPR26LA332), Sep 4, 2026: Cessna 152 (N5447L), Carlsbad, CA, substantial damage, investigation ongoing
- [NTSB WPR26LA316](https://openairdocs.org/ntsb/WPR26LA316), Aug 21, 2026: Piper PA-12 (N7524H), Bemidji, MN, substantial damage, investigation ongoing
- [NTSB ERA26LA283](https://openairdocs.org/ntsb/ERA26LA283), Jul 23, 2026: American AA-1 (N6132L), Kearneysville, WV, substantial damage, investigation ongoing
- [NTSB ANC26LA075](https://openairdocs.org/ntsb/ANC26LA075), Jul 20, 2026: Cessna 152 (N103UC), Pell City, AL, substantial damage, investigation ongoing
- [NTSB WPR26LA234](https://openairdocs.org/ntsb/WPR26LA234), Jun 23, 2026: Piper PA-12 (N3013M), Dixie, ID, substantial damage. Probable cause: The pilot's delayed decision to initiate a go-around and subsequent failure to maintain clearance from rising terrain.
- [NTSB ANC26LA059](https://openairdocs.org/ntsb/ANC26LA059), Jun 21, 2026: Piper PA-12 (N2586M), North Pole, AK, substantial damage, investigation ongoing
- [NTSB CEN26LA229](https://openairdocs.org/ntsb/CEN26LA229), Jun 16, 2026: Cessna 152 (N191FS), Carbondale, IL, substantial damage. Probable cause: The flight instructor’s delayed remedial action during the student pilot’s miscalculated landing flare which resulted in a hard landing and the nose landing gear collapsing.
- [NTSB ERA26LA240](https://openairdocs.org/ntsb/ERA26LA240), Jun 5, 2026: Piper PA-22-108 (N5081Z), Westminster, MD, substantial damage. Probable cause: The pilot’s failure to maintain airplane control during takeoff, which resulted in a runway excursion and collision with terrain.
- [NTSB CEN26LA208](https://openairdocs.org/ntsb/CEN26LA208), May 30, 2026: American AA-1A (N6416L), Amery, WI, substantial damage, investigation ongoing
- [NTSB WPR26LA201](https://openairdocs.org/ntsb/WPR26LA201), May 25, 2026: American AA1 (N6440L), Cowley, WY, substantial damage. Probable cause: The pilot's improper landing flare and subsequent loss of directional control during landing.
- [NTSB ANC26LA042](https://openairdocs.org/ntsb/ANC26LA042), May 18, 2026: Piper PA-14 (N5184H), Nenana, AK, substantial damage, investigation ongoing
- [NTSB WPR26LA144](https://openairdocs.org/ntsb/WPR26LA144), Mar 26, 2026: Cessna 152 (N24932), Los Angeles, CA, substantial damage. Probable cause: The pilot’s failure to maintain adequate clearance from a jet blast fence during taxi.
- [NTSB WPR26LA133](https://openairdocs.org/ntsb/WPR26LA133), Mar 19, 2026: Piper PA-12 (N7632H), West Linn, OR, substantial damage, investigation ongoing
- [NTSB CEN26LA137](https://openairdocs.org/ntsb/CEN26LA137), Mar 7, 2026: Piper PA-12 (N2511M), Lockhart, TX, substantial damage, investigation ongoing
- [NTSB ERA26LA076](https://openairdocs.org/ntsb/ERA26LA076), Dec 22, 2025: Cessna 152 (N65199), East Farmingdale, NY, substantial damage. Probable cause: A loss of brake effectiveness during taxi, which resulted in a collision with another airplane.
- [NTSB WPR26FA051](https://openairdocs.org/ntsb/WPR26FA051), Nov 26, 2025: American AA-1A (N9439L), High Rolls, NM, destroyed, 2 fatal, investigation ongoing
- [NTSB CEN26LA053](https://openairdocs.org/ntsb/CEN26LA053), Nov 26, 2025: Piper PA-22-108 (N4588Z), Colorado Springs, CO, substantial damage. Probable cause: The pilot’s failure to maintain directional control during the landing.
- [NTSB WPR26LA033](https://openairdocs.org/ntsb/WPR26LA033), Oct 27, 2025: Cessna 152 (N49792), Richfield, UT, substantial damage. Probable cause: The pilot’s failure to maintain directional control in gusting wind conditions during the takeoff roll.
- [NTSB ERA26LA023](https://openairdocs.org/ntsb/ERA26LA023), Oct 23, 2025: Cessna 152 (N95005), St. Augustine, FL, substantial damage. Probable cause: The student pilot’s failure to properly set the elevator trim prior to takeoff, which resulted in her inability to effectively control the airplane’s pitch and a collision with trees at the end of…
- [NTSB WPR26LA030](https://openairdocs.org/ntsb/WPR26LA030), Oct 20, 2025: Rutan Long-EZ (N8183K), Long Beach, CA, substantial damage, investigation ongoing
- [NTSB ERA26LA008](https://openairdocs.org/ntsb/ERA26LA008), Oct 7, 2025: Champion 7ECA (N63BC), East Rockingham, NC, substantial damage. Probable cause: The pilot’s failure to maintain control of the airplane during initial climb, resulting in an aerodynamic stall and impact with terrain.
- [NTSB ANC25LA109](https://openairdocs.org/ntsb/ANC25LA109), Sep 16, 2025: Piper PA-12 (N3816M), Kotlik, AK, substantial damage. Probable cause: The pilot’s failure to maintain airplane control during a go-around in variable wind conditions.
- [NTSB CEN25LA354](https://openairdocs.org/ntsb/CEN25LA354), Aug 30, 2025: Cessna 152 (N89585), Baldwin City, KS, substantial damage. Probable cause: The pilot’s decision to continue the night landing without runway lights which resulted in the runway overrun.
- [NTSB ERA25LA300](https://openairdocs.org/ntsb/ERA25LA300), Aug 14, 2025: Piper PA-12 (N4014M), Inverness, FL, substantial damage, investigation ongoing
- [NTSB ERA25LA297](https://openairdocs.org/ntsb/ERA25LA297), Aug 11, 2025: Piper PA-12 (N2504M), Ponce Inlet, FL, substantial damage, investigation ongoing
- [NTSB ERA25LA334](https://openairdocs.org/ntsb/ERA25LA334), Aug 8, 2025: Cessna 152 (N69200), Pottstown, PA, substantial damage. Probable cause: The pilot’s improper landing flare and subsequent improper recovery from a bounced landing, which resulted in substantial damage to the engine mounts.
- [NTSB WPR25FA233](https://openairdocs.org/ntsb/WPR25FA233), Aug 1, 2025: Cessna 152 (N6125B), Hornell, NY, destroyed, 1 fatal, investigation ongoing
- [NTSB ERA25FA283](https://openairdocs.org/ntsb/ERA25FA283), Aug 1, 2025: Piper J5C (N28151), Rochester, NY, substantial damage, 1 fatal, investigation ongoing
- [NTSB ANC25LA089](https://openairdocs.org/ntsb/ANC25LA089), Jul 14, 2025: Piper PA-12 (N2638M), Egegik, AK, substantial damage. Probable cause: The pilot’s excessive use of brakes during landing roll, which resulted in a nose-over.
- [NTSB CEN25LA235](https://openairdocs.org/ntsb/CEN25LA235), Jul 2, 2025: Piper PA12 (N7635H), Brush, CO, substantial damage. Probable cause: The pilot’s failure to maintain directional control while performing a touch and go landing.
- [NTSB ANC25LA062](https://openairdocs.org/ntsb/ANC25LA062), Jul 2, 2025: Champion 7ECA (N5169X), Wasilla, AK, substantial damage. Probable cause: The pilot’s excessive use of brakes during landing roll, which resulted in a nose-over.
- [NTSB CEN25LA201](https://openairdocs.org/ntsb/CEN25LA201), Jun 7, 2025: Lancair 235 (N25DB), Pawhuska, OK, substantial damage. Probable cause: The pilot’s failure to properly configure the airplane for landing.
- [NTSB WPR25FA145](https://openairdocs.org/ntsb/WPR25FA145), Apr 29, 2025: Champion 7ECA (N6310N), Cottonwood, CA, destroyed, 2 fatal. Probable cause: The flight instructor’s delayed response to an improper landing approach and runway overshoot, which resulted in an impact with an airport perimeter fence and trees.
- [NTSB CEN25LA134](https://openairdocs.org/ntsb/CEN25LA134), Mar 20, 2025: Cessna 152 (N68332), Denton, TX, substantial damage. Probable cause: The pilot’s improper landing flare and subsequent improper recovery from a bounced landing. Contributing to the accident was the gusty crosswind and windshear during landing.
- [NTSB CEN25LA091](https://openairdocs.org/ntsb/CEN25LA091), Feb 2, 2025: Aircraft Mfg & Development CH 2000 (N334LF), Ennis, TX, substantial damage. Probable cause: The pilot’s improper fuel planning which resulted in the total loss of engine power due to fuel exhaustion.
- [NTSB CEN25LA090](https://openairdocs.org/ntsb/CEN25LA090), Feb 1, 2025: Rutan Long-EZ (N88LE), Sparta, IL, destroyed. Probable cause: An onboard fire for unknown reasons.
- [NTSB CEN25LA086](https://openairdocs.org/ntsb/CEN25LA086), Jan 16, 2025: American Champion 7ECA (N798L), Longview, TX, incident, substantial damage. Probable cause: The failure of the lower hinge barrel due to fatigue cracking. Contributing to the failure of the lower hinge barrel was increased stress from end face contact likely associated with worn bushings or…
- [NTSB CEN25LA054](https://openairdocs.org/ntsb/CEN25LA054), Dec 1, 2024: American AA-1B (N6242L), Brenham, TX, substantial damage. Probable cause: A partial loss of engine power due to an obstructed induction system from a mud dauber nest.
- [NTSB CEN25LA036](https://openairdocs.org/ntsb/CEN25LA036), Nov 9, 2024: Cessna 152 (N49785), Bridgeport, TX, destroyed. Probable cause: The student pilot’s delayed go-around from an unstabilized approach and failure to attain/maintain control during the go-around that resulted in an impact with terrain.
- [NTSB WPR24LA293](https://openairdocs.org/ntsb/WPR24LA293), Sep 2, 2024: Cessna 152 (N66948), Amboy, CA, substantial damage. Probable cause: The pilot's failure to maintain clearance from a street sign during takeoff from a road.
- [NTSB ERA24LA303](https://openairdocs.org/ntsb/ERA24LA303), Jul 10, 2024: Jones LONG-EZ (N4JZ), Thomasville, GA, substantial damage
- [NTSB CEN24LA208](https://openairdocs.org/ntsb/CEN24LA208), Jun 1, 2024: Piper PA-38-112 (N9715T), Dalhart, TX, substantial damage. Probable cause: The pilot’s improper decision to take off with the airplane over its maximum allowable gross weight at a high density altitude, which degraded its climb performance and led an off airport landing.
- [NTSB CEN24LA176](https://openairdocs.org/ntsb/CEN24LA176), May 1, 2024: Bellanca 7ECA (N8618V), Watervliet, MI, substantial damage. Probable cause: The pilot’s failure to maintain control during the landing roll on a soft turf runway.
- [NTSB CEN24LA171](https://openairdocs.org/ntsb/CEN24LA171), Apr 15, 2024: American Champion 7ECA (N798L), Lakeport, TX, substantial damage. Probable cause: The student pilot’s failure to maintain adequate airspeed during the final approach, which resulted in an inadvertent aerodynamic stall. Contributing to the accident the flight instructor’s delayed…
- [NTSB CEN24LA158](https://openairdocs.org/ntsb/CEN24LA158), Apr 15, 2024: Jacobson SE5A Replica (N124BM), Luther, OK, substantial damage. Probable cause: The pilot’s failure to use carburetor heat, which resulted in fuel starvation during the initial climb, a loss of engine power, and impact with terrain.
- [NTSB ERA24LA173](https://openairdocs.org/ntsb/ERA24LA173), Mar 14, 2024: Cessna 152 (N6300Q), Pembroke Pines, FL, substantial damage. Probable cause: An inflight collision with a bird while approaching the destination airport.
- [NTSB CEN24LA090](https://openairdocs.org/ntsb/CEN24LA090), Jan 10, 2024: Piper PA-12 (N7670H), Lampasas, TX, substantial damage. Probable cause: The pilot’s failure to maintain directional control during the landing roll.
- [NTSB WPR24LA027](https://openairdocs.org/ntsb/WPR24LA027), Nov 4, 2023: Kitfox S5 (N88VJ), Ririe, ID, substantial damage. Probable cause: The pilot’s inadvertent excessive use of brakes which resulted in a nose-over.
- [NTSB ERA24LA024](https://openairdocs.org/ntsb/ERA24LA024), Oct 27, 2023: Piper PA-12 (N3910M), Rangeley, ME, substantial damage. Probable cause: The pilot’s failure to maintain directional control during the landing roll with a crosswind, after the right tailwheel spring separated.

All 4,607: https://openairdocs.org/engine/lycoming-0-235-series/ntsb.md

## FAA accident and incident reports (6,819, 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 20260907011999I](https://openairdocs.org/incident/20260907011999I), Sep 7, 2026: Piper PA-12 (N4232M), Lincolnville, ME, Minor damage. Pilot stated that they maintained an airspeed of 50 miles per hour and landed long due to a tailwind. Aircraft touched down 3/4 of the way down the grass field…
- [Accident 20260904011839A](https://openairdocs.org/incident/20260904011839A), Sep 4, 2026: Cessna 152 (N5447L), Carlsbad, CA, Substantial damage. On September 4, 2026 [privacy data omitted] was returning from a student solo cross country flight to san bernardino. During landing her approach became…
- [Accident 20260821011209A](https://openairdocs.org/incident/20260821011209A), Aug 21, 2026: Piper PA-12 (N7524H), Bemidji, MN, Substantial damage. The pilot-in-command was instructing the student pilot for his single engine sea rating. The two had performed ten amphibious landings that day, refueled and…
- [Incident 20260809012419I](https://openairdocs.org/incident/20260809012419I), Aug 9, 2026: Piper PA-12 (N3598M), Talkeetna, AK, Minor damage. On August 9, 2026, at approximately 15:00 AKDT, [privacy data omitted] experienced a propeller strike during ground taxi operations at the iron creek airstrip…
- [Incident 20260727009189I](https://openairdocs.org/incident/20260727009189I), Jul 27, 2026: Piper PA-12 (N3541M), Seldovia, AK, Minor damage. From pilot statement: Flight from soldotna airport to macdonald spit near Seldovia, AK. Upon arrival @ macdonald spit, I did two low passes to examine the…
- [Accident 20260721012239A](https://openairdocs.org/incident/20260721012239A), Jul 21, 2026: Cessna 152 (N103UC), Pell, AL, Substantial damage. Aircraft experience a total engine failure on climbout. Pilot attempted to restart without success which resulted in a forced landing approximatly 3 miles from…
- [Incident 20260712009249I](https://openairdocs.org/incident/20260712009249I), Jul 12, 2026: Cessna 152 (N65613), San Carlos, CA, Substantial damage. Student pilot was enroute to perform first solo flight. While student pilot was taxiing to runway at sql, the solo flight was cancled due to high winds and…
- [Incident 20260701008439I](https://openairdocs.org/incident/20260701008439I), Jul 1, 2026: Cessna 152 (N49261), Salem, OR, Minor damage. During an engine break-in, dennis wyza, while piloting [privacy data omitted], experienced a sudden right wing drop when extending full flaps during landing…
- [Accident 20260623007739A](https://openairdocs.org/incident/20260623007739A), Jun 23, 2026: Piper PA-12 (N3013M), Dixie, ID, Substantial damage. According to the pilot: I departed for the mccall, ID airport (kmyl) around 7 am for fuel and breakfast. I departed mccall around 9:00 am with the intention of…
- [Accident 20260621006359A](https://openairdocs.org/incident/20260621006359A), Jun 21, 2026: Piper PA-12 (N2586M), North Pole, AK, Substantial damage. During takeoff from a grass runway, the aircraft veered to the left and subsequently struck a telephone Pole/windsock with the left wing. After striking the…
- [Accident 20260616007749A](https://openairdocs.org/incident/20260616007749A), Jun 16, 2026: Cessna 152 (N191FS), Carbondale, IL, Substantial damage. On June 16, 2026, at 1438 zulu time, a Southern Illinois university (siu) student pilot and flight instructor experienced a hard landing on runway 18L at…
- [Accident 20260605007649A](https://openairdocs.org/incident/20260605007649A), Jun 5, 2026: Piper PA-22-108 (N5081Z), Westminster, MD, Substantial damage. The airman rotated the aircraft at about 60 mph. The aircraft suddenly and abruptly turned to the left. On the left side of the runway is a solid terrain wall…
- [Accident 20260530005309A](https://openairdocs.org/incident/20260530005309A), May 30, 2026: American Aviation AA-1A (N6416L), Amery, WI, Substantial damage. The pilot was ferrying an aircraft from seller to purchaser over four states. After two stops for fuel and enroute on his final leg at 2400 feet altitude, the…
- [Accident 20260525009549A](https://openairdocs.org/incident/20260525009549A), May 25, 2026: American Aviation AA-1A (N6440L), Cowley, WY, Substantial damage. Student pilot lost control on landing, bounced and went off runway and hit irrigation ditch and flipped over.
- [Accident 20260518005059A](https://openairdocs.org/incident/20260518005059A), May 18, 2026: Piper PA-14 (N5184H), Healy, AK, Substantial damage. The pilot intended to land at a remote, unimproved airstrip. Prior to landing, the pilot conducted a low-altitude pass over the airstrip to evaluate the runway…
- [Accident 20260326002999A](https://openairdocs.org/incident/20260326002999A), Mar 26, 2026: Cessna 152 (N24932), Van Nuys, CA, Substantial damage. Aircraft was taxing to the Van Nuys run up area. PIC attempted to circumvent aircraft on the right-hand side. Aircraft's outboard leading edge on the left-hand…
- [Incident 20260318003779I](https://openairdocs.org/incident/20260318003779I), Mar 18, 2026: Piper PA-12 (N7632H), St. Helens, WA, Substantial damage. On March 18, around 15:30 local time, N7632H departed the hillsboro, or (hio) airport for the purpose of, as described by the pilot, some fun flying along the…
- [Accident 20260307003499A](https://openairdocs.org/incident/20260307003499A), Mar 7, 2026: Piper PA-12 (N2511M), Lockhart, TX, Substantial damage. While on an instructional flight the PIC was performing takeoff and landing practice. The landings were not touch and goes and were done to a full stop. During…
- [Accident 20251222019752A](https://openairdocs.org/incident/20251222019752A), Dec 22, 2025: Cessna 152 (N65199), Farmingdale, NY, Substantial damage. N65199 (C152) was 2nd in line for the hold short of runway 32. N1517E was taxiing to the runup area of runway 32. The pilot of the C172 stated the right brake…
- [Incident 20251216020719I](https://openairdocs.org/incident/20251216020719I), Dec 16, 2025: Cessna 152 (N48410), El Paso, TX, Minor damage. On Monday, December 15, 2025, at about 1000, in a Cessna 152 an emergency off airport landing was declared during climb out. IFR approaches were being…
- [Incident 20251203020389I](https://openairdocs.org/incident/20251203020389I), Dec 3, 2025: Grumman AA-1B (N6516L), Sussex, NJ, Minor damage. Pilot preflighted the aircraft that morning and no faults were found. Took off out of greenwood lake airport with the intentions of performing basic pilot…
- [Accident 20251126020689A](https://openairdocs.org/incident/20251126020689A), Nov 26, 2025: American Aviation AA-1A (N9439L), Alamogordo, NM, Destroyed, 2 fatal. On November 26, 2025, Grumman AA1-A was destroyed during a part 91 personal flight. The aircraft took off from Alamogordo new Mexico (alm) airport at 11:32AM…
- [Accident 20251126019099A](https://openairdocs.org/incident/20251126019099A), Nov 26, 2025: Piper PA-22-108 (N4588Z), Colorado Spring, CO, Substantial damage. Aircraft approached kcos and was cleared for left base runway 17R touch and go. Upon touchdown the left wing lifted, pilot over corrected the control inputs…
- [Accident 20251027017549A](https://openairdocs.org/incident/20251027017549A), Oct 27, 2025: Cessna 152 (N49792), Richfield, UT, Substantial damage. The airman performed a preflight and called AWOS. The report was winds 310 @ 5, winds calm. The pilot thought the wind socks looked to be more breezy than the…
- [Accident 20251023017979A](https://openairdocs.org/incident/20251023017979A), Oct 23, 2025: Cessna 152 (N95005), Saint Augustine, FL, Destroyed. Student pilot and solo occupant of the Cessna 152 took off from runway rwy 31 at ksgj on a solo training flight. During the climbout the aircraft leveled off…
- [Accident 20251021017129A](https://openairdocs.org/incident/20251021017129A), Oct 21, 2025: Lazzarini/Lazzarini LONG-EZ (N8183K), Long Beach, CA, Substantial damage. On October 21, 2025, at approximately 1603 pacific daylight time (PDT), the aircraft was substantially damaged in an accident in Long Beach, California, during…
- [Accident 20251007015039A](https://openairdocs.org/incident/20251007015039A), Oct 7, 2025: Champion 7ECA (N63BC), Rockinghham, NC, Substantial damage. On 10/7/2025, a 1968 Champion 7ECA aircraft with 2 occupants flew directly from kmeb to krcz to practice grass strip landings. First landing attempt resulted…
- [Accident 20250814013299A](https://openairdocs.org/incident/20250814013299A), Aug 14, 2025: Piper PA-12 (N4014M), Inverness, FL, Substantial damage. Shortly after initiating a departure roll on rwy 19 at inf the pilot lost control of the aircraft, veered left and exited the runway at full power. He then…
- [Accident 20250811012259A](https://openairdocs.org/incident/20250811012259A), Aug 11, 2025: Piper PA-12 (N2504M), New Smyrna Beac, FL, Substantial damage. On August 11, 2025, at approximately 1700Z (1300 EDT), a general aviation accident involving a Piper PA-12 occurred near new Smyrna beach, Florida. The…
- [Accident 20250810016459A](https://openairdocs.org/incident/20250810016459A), Aug 10, 2025: Cessna 152 (N89585), Balwdwin City, KS, Substantial damage. On August 10, 2025, the wichita FSDO was notifiied of an accident that occurred at Vinland Valley Aerodrome near baldwin KS. Pilot attempted night landing on…
- [Accident 20250808012429A](https://openairdocs.org/incident/20250808012429A), Aug 8, 2025: Cessna 152 (N69200), Pottstown, PA, Substantial damage. During the first approach, the pilot reported initiating a go-around due to being high on the final approach and misaligned with the runway. On the second…
- [Accident 20250801021009A](https://openairdocs.org/incident/20250801021009A), Aug 1, 2025: Piper J5C (N28151), Rochester, NY, Substantial damage, 1 fatal. On August 1, 2025, about 1330 eastern daylight time, a Piper J5C, was substantially damaged when it was involved in an accident near Rochester, new york. The…
- [Accident 20250801010209A](https://openairdocs.org/incident/20250801010209A), Aug 1, 2025: Cessna 152 (N6125B), Hornellsville, NY, Destroyed, 1 fatal. Aircraft impacted wooded area in hornelsville NY Friday August 01, 2025 approximately 18:30 local resulting in complete aircraft breakup causing fatal injury…
- [Accident 20250714015299A](https://openairdocs.org/incident/20250714015299A), Jul 14, 2025: Piper PA-12 (N2638M), Egegik, AK, Substantial damage. Pilot was building time in his PA-12 tail-wheeled aircraft. Upon landing on a soft off airport landing area pilot applied brakes and aircraft ground looped.
- [Incident 20250712009119I](https://openairdocs.org/incident/20250712009119I), Jul 12, 2025: Bellanca 7ECA (N9193L), San Jose, CA, Minor damage. On a calm VFR day, the pilot was practicing patterns in a tailwheel aircraft on runway 13R at rhv, using a wheel landing technique, without lowering the tail…
- [Accident 20250702014939A](https://openairdocs.org/incident/20250702014939A), Jul 2, 2025: Champion 7ECA (N5169X), Anchorage, AK, Substantial damage. The flight instructor was conducting tailwheel instruction on a gravel landing strip. During the landing rollout, the aircraft began to veer off the runway. In…
- [Accident 20250702007429A](https://openairdocs.org/incident/20250702007429A), Jul 2, 2025: Piper PA-12 (N7635H), Brush, CO, Substantial damage. On 07/02/2025 around 1145 MDT the PIC was practicing pattern work. On the initial approach to 7V5 on a left downwind the aircraft touched down. Moments later…
- [Incident 20250615009319I](https://openairdocs.org/incident/20250615009319I), Jun 15, 2025: Cessna 152 (N68459), Oakland, CA, Minor damage. During the departure roll on runway 28R, the flight crew reported a bird strike. The aircraft subsequently notified air traffic control (ATC) of the incident.…
- [Accident 20250607006299A](https://openairdocs.org/incident/20250607006299A), Jun 7, 2025: Burt Donald R LANCAIR 235 (N25DB), Pawhuska, OK, Substantial damage. On June 7, 2025 at approximately 1530 local time, a Lancair 235 experimental amateur built aircraft was on approach to Pawhuska Municipal Airport (H76) runway…
- [Accident 20250429005859A](https://openairdocs.org/incident/20250429005859A), Apr 29, 2025: Champion 7ECA (N6310N), Cottonwood, CA, Destroyed, 2 fatal. On April 29, 2025, about 1534 pacific daylight time, a Champion, 7ECA, was destroyed when it was involved in an accident near Cottonwood, California and a post…
- [Incident 20250424005339I](https://openairdocs.org/incident/20250424005339I), Apr 24, 2025: Cessna 152 (N24363), Fernandina Beac, FL, Substantial damage. Pilot was repositioning the aircraft from a parking spot to the front of the hangar when the right-wing tip struck the hangar door. There was no intent for…
- [Incident 20250419005239I](https://openairdocs.org/incident/20250419005239I), Apr 19, 2025: Correia Joseph M LONG EZ (RUTAN) (N64LZ), Covington, TN, Minor damage. On 19 April at 1830 CDT [privacy data omitted] an experimental amateur build long ez aircraft departed Covington, TN municipal airport (M04) with a destination…
- [Incident 20250328020159I](https://openairdocs.org/incident/20250328020159I), Mar 28, 2025: Beech 77 (N1804R), Caldwell, NJ, Minor damage. While landing at cdw on runway 22, as stated by the pilot in command, he lost directional control of the aircraft due to gusting winds incurring a tail strike,…
- [Incident 20250326006289I](https://openairdocs.org/incident/20250326006289I), Mar 26, 2025: Piper PA-38-112 (N2606L), Bloomington, IL, Minor damage. The pilot landed runway 29 and taxied on taxiway delta to the ramp. While turning into a hangar row the left-wingtip contacted a hangar and turned the aircraft…
- [Incident 20250323003349I](https://openairdocs.org/incident/20250323003349I), Mar 23, 2025: Piper PA-12 (N3342M), Kasilof, AK, Substantial damage. Pilot landed on ice covered lake. Pilot misjudged water covering ice and the thickness of the ice and upon touchdown was unable to abort landing. Aircraft…
- [Accident 20250320013029A](https://openairdocs.org/incident/20250320013029A), Mar 20, 2025: Cessna 152 (N68332), Denton, TX, Substantial damage. On March 20, 2025 at 1550L, an airplane was attempting to land on runway 36R at Denton regional airport (dto). During final approach the aircraft touched down…
- [Incident 20250314010869I](https://openairdocs.org/incident/20250314010869I), Mar 14, 2025: Piper PA-16 (N5304H), Wauchula, FL, Minor damage. Aircraft landed and veered right, went off the runway into the grass. Tires damaged, left wingtip hit the ground.
- [Incident 20250310019909I](https://openairdocs.org/incident/20250310019909I), Mar 10, 2025: Piper PA-12 (N2511M), Georgetown, TX, No damage. On 10 March 2025, the pilot departed in [privacy data omitted], a PA-12, from kaus enroute to kgtu to conduct some practice approaches with another pilot in…
- [Incident 20250306003109I](https://openairdocs.org/incident/20250306003109I), Mar 6, 2025: Cessna 152 (N153SK), Victoria, TX, No damage. On March 6, 2025, at 11:42 hours, a Cessna 152 was involved in an incident during a decent into Victoria Regional Airport in Victoria, Texas. During the…
- [Incident 20250207001729I](https://openairdocs.org/incident/20250207001729I), Feb 7, 2025: Piper PA-12 (N2913M), Charlottesville, VA, Minor damage. On 02/07/2025 at 1630 local time, pilot had incident where he suffered a prop strike to his Piper cub PA-12 causing it to teeter nose down on the ramp in…

All 6,819: https://openairdocs.org/engine/lycoming-0-235-series/incidents.md

## Service difficulty reports (84, newest 50)

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

- [SDR 2J5R2021080300001](https://openairdocs.org/sdr/2J5R2021080300001), Jul 20, 2021: IMPULSE COUPLING. FAULTED. SLICK MAGNETO FAILURE ON LOW-TIME OVERHAULED ENGINE. PILOT REPORTED IT WAS A VERY HOT DAY, NORMAL START, RUN-UP (MAGNETO DROPS UNDER 100 RPM). AFTER TAKE-OFF RO
- [SDR 8HBR20180611014](https://openairdocs.org/sdr/8HBR20180611014), Jun 5, 2018: OIL COOLER. CRACKED. OIL COOLER CRACKED; OIL LOSS. FLIGHT CANCELED
- [SDR 8HBR20180601012](https://openairdocs.org/sdr/8HBR20180601012), May 26, 2018: MAGNETO. INOPERATIVE. LEFT MAGNETO FAILURE ON TAKE-OFF DURING TOUCH & GO'S TRAINING LEADING TO PARTIAL POWER LOSS. TAKE OFF ABORTED AND AIRCRAFT LANDED OFF END OF RUNWAY; BROKE ENGIN
- [SDR 2018FA0000100](https://openairdocs.org/sdr/2018FA0000100), Feb 5, 2018: ROTOR. WORN. WORN ROTOR ULTIMATELY FAILED DURING FLIGHT, RESULTING IN A FATAL ACCIDENT. THE PILOT LIKELY HAD TO APPLY EXCESSIVE FORCE TO SWITCH FUEL TANKS WITH THE WORN ROTO
- [SDR 2017FA0000167](https://openairdocs.org/sdr/2017FA0000167), Mar 29, 2017: CARBURETOR. CLOGGED. DURING TRAINING, FLIGHT, INSTRUCTOR AND STUDENT PILOT NOTICED LOSS OF POWER. THEY DID PRECAUTIONARY LANDING ON I-75 HIGHWAY.
- [SDR CA151224001](https://openairdocs.org/sdr/CA151224001), Dec 21, 2015: ENGINE. FAILED. (CAN) IN THE DEPARTURE PHASE OF A STOP AND GO ON A TRAINING FLIGHT THE PILOT NOTIFIED THE TOWER OF AN ENGINE FAILURE. THE ENGINE WAS RESTARTED AND THE PILOT REQ
- [SDR 2015FA0000588](https://openairdocs.org/sdr/2015FA0000588), Nov 13, 2015: MAGNETO. SEPARATED. MAGNETO DISTRIBUTOR GEAR ELECTRODE FINGER LOOSE ON SHAFT.
- [SDR 2015FA0000451](https://openairdocs.org/sdr/2015FA0000451), Sep 7, 2015: SPINNER. MISSING. DURING CRUISE FLIGHT THE COMPOSITE PROPELLER SPINNER, PN 1054-1 SEPARATED OR BROKE APART AND IMPACTED 1 BLADE OF THE WOODEN PROPELLER, MODEL 6272. THE PROPELLER
- [SDR 2013FA0000209](https://openairdocs.org/sdr/2013FA0000209), Mar 3, 2013: CALIPER. CRACKED. WHILE TAXING OFF RUNWAY, LOST LT BRAKE AND ACFT ENTERED IN THE GRASS AREA. THERE WERE NO MAJOR DAMAGE TO THE ACFT OR INJURIES. DISCOVERED THAT THE LT WHEEL BRAK
- [SDR 2013FA0000124](https://openairdocs.org/sdr/2013FA0000124), Feb 21, 2013: MAGNETO. CONTAMINATED. PILOT REPORTS ROUGH RUNNING RT MAGNETO IN FLIGHT. INSPECTION FINDS MAGNETO HAS OIL INTERNALLY. MAGNETO WAS REMOVED FOR OVERHAUL AND SERVICEABLE MAGNETO INSTALLE
- [SDR BR8C201202250001](https://openairdocs.org/sdr/BR8C201202250001), Feb 25, 2012: TAIL WHEEL. DETACHED. TAIL WHEEL ASSY SEPARATED FROM AIRCRAFT DURING TOUCH & GO'S. ACFT IS USED FOR THE PURPOSE OF TRAINING, VERY HIGH NUMBER OF CYCLES PER HOUR OF FLIGHT TIME. BELIE
- [SDR 2011FA0000114](https://openairdocs.org/sdr/2011FA0000114), Jan 18, 2011: LINE. LEAKING. SMALL AMOUNT OF CORROSION ON UNDERSIDE OF FUEL LINE, RESULTED IN PIN-HOLE LEAK.
- [SDR ZB0R201000007](https://openairdocs.org/sdr/ZB0R201000007), Oct 27, 2010: CASE HALF. CRACKED. DURING ENGINE TEAR DOWN INSP FOR PROPELLER STRIKE, TECH FOUND LT CASE HALF CRACKED IN 2 PLACES AT THE NR2 CYL OPENING. THE DAMAGE CAN BE TOTALLY ATTRIBUTED TO T
- [SDR 2010FA0000153](https://openairdocs.org/sdr/2010FA0000153), Jan 31, 2010: CYLINDER. CRACKED. CYLINDER SN 37316-30 WAS PRESSURE TEST INSPECTED IAW AD 2009-26-12 AND WAS FOUND TO BE CRACKED WHERE CYLINDER HEAD CONNECTS TO CYLINDER BARREL. THE DEFECTIVE CY
- [SDR 2009FA0000772](https://openairdocs.org/sdr/2009FA0000772), Sep 4, 2009: TAPPET. NICKED. TAPPET BODIES RECEIVED FROM MFG WERE FOUND TO BE FULL OF NICKS AND POROSITY. (K)
- [SDR 2009FA0000500](https://openairdocs.org/sdr/2009FA0000500), May 15, 2009: SPAR. CRACKED. ON 5/15/2009, DURING AN ANNUAL INSPECTION IT WAS NOTED THERE IS A COMPRESSION CRACK AT REAR STRUT ATTACH POINT TOP SIDE OF SPAR AT END OF DOUBLER. WHING TIP IMP
- [SDR M2Z2008F00000](https://openairdocs.org/sdr/M2Z2008F00000), Oct 21, 2008: BATTERY PACK. LEAKING. BATTERY PACK LEAKING. PREMATURE DEAD BATTERY. DESTROYED ELT. DEFECTIVE BATTERY AND/OR IMPROPER MFG PROCESS OF BATTERY PACK. (K)
- [SDR 2008FA0000516](https://openairdocs.org/sdr/2008FA0000516), Jul 21, 2008: OIL FILTER. CONTAMINATED. FILTER INSTALLED AND OIL CHANGE RUN-UP NORMAL. FIRST FLIGHT AFTER OIL CHANGE, PILOT NOTICED OIL PRESSURE DROPPING AND HIGH OIL TEMP, UNABLE TO CORRECT, PILOT RE
- [SDR 2008FA0000498](https://openairdocs.org/sdr/2008FA0000498), Jul 11, 2008: BRACKET. CRACKED. WHILE CONDUCTING A 100 HOUR INSPECTION ON THE AIRCRAFT, COMPLYING WITH AD80-11-04 (NUTPLATE INSPECTION). UPON INSPECTION, IT WAS FOUND THAT NOT ONLY WAS THERE A
- [SDR ZB0R20070002](https://openairdocs.org/sdr/ZB0R20070002), Oct 15, 2007: CARBURETOR. LEAKING. DURING PROGRESSIVE INSP, FOUND CARBURETOR BOWL LEAKING AT GASKET. BOLTS WOULD NOT TIGHTEN - STRIPED THREADS. REPLACED CARBURETOR TO CORRECT DISCREPANCY.
- [SDR ZB0R20070005](https://openairdocs.org/sdr/ZB0R20070005), Oct 1, 2007: CYLINDER. LEAKING. DURING PROGRESSIVE INSP, FOUND NR 2 CYLINDER UPPER TOP THROUGH BOLT LEAKING SEVERELY. REMOVED ENGINE FOR REPAIR. REINSTALLED AFTER REPAIR BY SERVICE CENTER. (CA
- [SDR 2007FA0000700](https://openairdocs.org/sdr/2007FA0000700), Jul 11, 2007: FORK. CRACKED. DURING INSPECTION, FOUND NOSE GEAR FORK CRACKED (1.5 INCH LONG) ON LT UPPER RADIUS OF FORK. AIRCRAFT IS USED FOR TRAINING. (K)
- [SDR 2007FA0000463](https://openairdocs.org/sdr/2007FA0000463), May 14, 2007: SPAR. CRACKED. DELAMINATION OCCURRING AT WING STRUT ATTACH LOCATION. CRACK AT BOTTOM EDGE AT ROOT FITTING. POSSIBLE AGE OF SPAR CAUSING DELAMINATION. LONGITUDINAL CRACK AT WIN
- [SDR 2007FA0000417](https://openairdocs.org/sdr/2007FA0000417), May 11, 2007: SPAR. DELAMINATED. DELAMINATION OCCURRING AT LT FRONT WING SPAR / STRUT LOCATION. CRACK AT BOTTOM EDGE, AT WING ROOT FITTING. POSSIBLE AGE OF SPAR CAUSING DELAMINATION. LONGITUDIN
- [SDR 2007FA0000151](https://openairdocs.org/sdr/2007FA0000151), Feb 14, 2007: FASTENER. OUT OF POSITION. RIB NAILS PULLING OUT IN ALMOST EVERY RIB. RT TIP RIB HAS ALL NAILS PULLED OUT AND A SPACE BETWEEN RIBS AND SPARS, BOTH FRONT AND REAR LOCATIONS. LT WING HAS ON
- [SDR 2006FA0001189](https://openairdocs.org/sdr/2006FA0001189), Dec 12, 2006: OIL COOLER. LEAKING. OWNER REPORTED THAT AFTER FLYING AIRCRAFT, THERE APPEARED TO BE OIL LEAKING FROM UNDER COWLING. OIL LEVEL WAS CHECKED AND FOUND TO BE DOWN TO ONLY 3 QUARTS LT. 
- [SDR 2006FA0000756](https://openairdocs.org/sdr/2006FA0000756), Jul 21, 2006: WIRE. SHORTED. WHILE IN FLIGHT, THE PILOT REPORTED HE COULD SMELL SOMETHING BURNING, LANDED AS SOON AS PRACTICAL. INVESTIGATION REVEALED THAT THE WIRE FROM THE ALTERNATOR TO T
- [SDR 2006FA0000674](https://openairdocs.org/sdr/2006FA0000674), Jun 12, 2006: SPRING. BROKEN. FLIGHT INSTRUCTOR WAS DEMO-ING A STALL TO STUDENT. MANUVER STARTED AT 2700 FT. CONTROLS LOCKED UP- AC WENT NOSE DOWN. FLT INST RECOVERED AT 700 FT. (K)
- [SDR 2006FA0000458](https://openairdocs.org/sdr/2006FA0000458), Apr 19, 2006: CABLE. BROKEN. ON FINAL, STUDENT SELECTED 30 DEGREE FLAPS, A LOUD POP WAS HEARD, RT FLAP CAME DOWN TO 30 DEGREES, NO MOVEMENT AT LT FLAP. AIRCRAFT LANDED WITHOUT INCIDENT. INV
- [SDR 2006FA0000373](https://openairdocs.org/sdr/2006FA0000373), Mar 22, 2006: BRACKET. CRACKED. 3 CRACKS WHERE FOUND ON THE TOP RT OB BOLT HOLE AND ONE CRACK IN WELD JUST AFT OF SAME BOLT HOLE, (NUT PLATES HAD BEEN PREVIOUSLY REMOVED). UNKNOWN CAUSE, AD SH
- [SDR 2005FA0001602](https://openairdocs.org/sdr/2005FA0001602), Dec 7, 2005: SKIN. CRACKED. THE SKIN SUPPORTING THE COPILOTS IB SEAT RAIL WAS FOUND CRACKED. THE CRACK WAS APPROX 2.5 INCH LONG AND WAS PERPENDICULAR TO THE SEAT RAIL. THE CRACK WAS LOCATE
- [SDR 2006FA0000012](https://openairdocs.org/sdr/2006FA0000012), Nov 10, 2005: SPAR. CRACKED. ON ROUTING 100 HR INSPECTION FOUND CRACK ON HORIZONTAL STABILIZER FRONT APEK, LOWER ANGLE PN 0432001-37 AND REINFORCEMENT PLATE PN 0432001-44, 1 LOWER SKIN RIVE
- [SDR 2005FA0000184](https://openairdocs.org/sdr/2005FA0000184), Feb 14, 2005: ADAPTER. LEAKING. DOUBLER INSTALLEN IN FUEL TANK HAS NO ACCESS AND MFG CAN NOT TELL US HOW TO STOP FUEL LEAK.
- [SDR 2005FA0001205](https://openairdocs.org/sdr/2005FA0001205), Dec 29, 2004: ATTACH FITTING. CRACKED. A CRACK WAS FOUND IN THE TORQUE KNEE ATTACH LUG (UPPER RADIUS) ON THE RT MAIN LANDING GEAR BRACE ASSEMBLY.
- [SDR 2004FA0000891](https://openairdocs.org/sdr/2004FA0000891), Aug 24, 2004: SLEEVE. FAILED. NICOPRESS SLEEVE (ZINC PLATED COPPER) WAS INSTALLED ON A .0625 INCH STAINLESS CABLE AND PULLED OUT UNDER FLIGHT LOADS. A TEST WAS MADE USING ANOTER SLEEVE AND T
- [SDR 231041](https://openairdocs.org/sdr/231041), Aug 16, 2004: CONTROL PANEL. CORRODED. SMOKE COMING FROM WING ICE CIRCUIT BREAKER PANEL, PULLED BREAKER APPEARED TO STOP SMOKING. MAINTENANCE OPENED PANEL, RT SIDE CORROSION NOTED. CLEANED CORROSION,
- [SDR 2004FA0000542](https://openairdocs.org/sdr/2004FA0000542), Jun 3, 2004: MASTER SWITCH. FAILED. LOWER CONNECTION ON MASTER SWITCH CONTAINS TWO TERMINALS, ONE THAT IS NOT USED. THIS CONTACT THAT IS NOT USED IS THE LOWEST ONE ON THE SWITCH AND CAN COM INTO C
- [SDR 2004FA0000344](https://openairdocs.org/sdr/2004FA0000344), Mar 12, 2004: SPAR. CRACKED. FOUND RUDDER SPAR CRACKED AT LIGHTENING HOLE JUST UNDER TOP RUDDER MOUNTING HINGE. 4 CRACKS WERE PRESENT, THE LONGEST WAS .5 INCH. RECOMMEND INSPECTION EVERY 10
- [SDR 2004FA0000235](https://openairdocs.org/sdr/2004FA0000235), Feb 6, 2004: STRUCTURE. CHAFED. STABILATOR RUBS AGAINST FUSELAGE SCREW. .5 INCH GAP ON LT SIDE, .2500 INCH GAP ON RT SIDE. (GL13200405339)
- [SDR 2004FA0000236](https://openairdocs.org/sdr/2004FA0000236), Feb 6, 2004: FASTENER. CHAFED. DEFLECTION OF LT AILERON UP CAUSES IT TO RUB AGAINST AN EXPOSED RIVET. DEFLECTION OF RT AILERON UP CAUSES IT TO RUB AGAINST TWO EXPOSED RIVETS POSSIBLY HINDERIN
- [SDR 2004FA0000237](https://openairdocs.org/sdr/2004FA0000237), Feb 6, 2004: SPINNER. CHAFED. PROP SPINNER RUBS AGAINST COWL, INCH LONG AND GOING THOUGH FIBERGLASS COWL. (GL13200405339)
- [SDR 2004FA0000238](https://openairdocs.org/sdr/2004FA0000238), Feb 6, 2004: RUDDER. MISINSTALLED. RUDDER CONTACTS FUSELAGE BEFORE REACHING STOPS. (GL13200405339)
- [SDR 2004FA0000239](https://openairdocs.org/sdr/2004FA0000239), Feb 6, 2004: BUNGEE CYLINDER. STIFF. NOSE WHEEL STEERING BUNGEES ARE EXTREMELY STIFF, CAUSES THE RUDDER TO REQUIRE EXTREMELY HIGH RUDDER INPUTS IN FLIGHT. PILOT CAN FEEL A BREAKOVER POINT. (GL13200
- [SDR 2004FA0000240](https://openairdocs.org/sdr/2004FA0000240), Feb 6, 2004: INDICATOR. INACCURATE. NEWLY INSTALLED VORS INDICATORS 6-10 DEGREES DIFFERENCE. NAV 1 G430 W G5, NAV 2 BK W G5 KX 155. (GL13200405339)
- [SDR 2004FA0000241](https://openairdocs.org/sdr/2004FA0000241), Feb 6, 2004: STEP. LOOSE. RT ENTRANCE STEP IS EXTREMELY LOOSE. (GL200305339)
- [SDR 2004FA0000242](https://openairdocs.org/sdr/2004FA0000242), Feb 6, 2004: FUEL TANK. LEAKING. WITH FULL FUEL TANKS AND THE AIRCRAFT ON THE GROUND AN AMOUNT OF FUEL (.5 GALLON +) WILL DRAIN FROM THE VENT OF THE LT FUEL TANK AFTER A FORWARD OR AFT MOVEMENT
- [SDR 2004FA0000243](https://openairdocs.org/sdr/2004FA0000243), Feb 6, 2004: BRACKET. BROKEN. CARB HEAT BRACKET BROKE LOOSE IN FLIGHT.
- [SDR 2004FA0000244](https://openairdocs.org/sdr/2004FA0000244), Feb 6, 2004: AUDIO PANEL. INOPERATIVE. STEREO INPUT INTO AIRCRAFT DOES NOT WORK. (GL13200405339)
- [SDR 2004FA0000245](https://openairdocs.org/sdr/2004FA0000245), Feb 6, 2004: PLACARD. MISSING. DOES NOT INDICATE TAKEOFF POSITION, PLACARD MISSING. (GL13200405339)
- [SDR 2003FA0001207](https://openairdocs.org/sdr/2003FA0001207), Nov 18, 2003: PULLEY. LOOSE. RFD CONTROL TOWER NOTED SPARKS COMING FROM COWLING AREA. UPON COWL REMOVAL NOTED ALTERNATOR AND ALTERNATOR PULLEY HAD BEEN LOOSE AND WOBBLING. ALTERNATOR HOUSIN

All 84: https://openairdocs.org/engine/lycoming-0-235-series/reports.md

## STCs that may be installed (OpenAirDocs) (45)

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
- [STC SE208SO](https://openairdocs.org/stc/SE208SO): Installation of ice indicator in the carburetor. LegacySTC.com
- [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
- [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. Lists O-235-A
- [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 O-235-A
- [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp. Lists O-235-C1
- [STC SE792NW](https://openairdocs.org/stc/SE792NW): Modification of a Lycoming0-235-L2C, or 0-235-L2A engine to increase HP rating from 115-HP at 2700 rpm to a continuous125 HP at 2800 rpm. 4J's Aviation. Lists O-235-L2A
- [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
- [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
- [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. Lists O-235-C1
- [STC SE3877NM](https://openairdocs.org/stc/SE3877NM): Modification of a Lycoming O-235-L2C engine to increase the horsepower rating from 115 HP @ 2700 RPM to a continuous 125 HP @ 2800 RPM. Kai V. Nielsen. Lists O-235-L2C
- [STC SE8707SW](https://openairdocs.org/stc/SE8707SW): Alteration of Lycoming O-235 engine to allow use of ethanol fuel. Shauck Dr Maxwell E Jr. Lists O-235-C1
- [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. Lists O-235-C1
- [STC SE790GL](https://openairdocs.org/stc/SE790GL): Superseded by STC SE01943CH. Replace Lycoming piston number LW-13623 with Lycoming piston number 73851. EAA Aviation Foundation. Lists O-235-K2C
- [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 SE00988CH](https://openairdocs.org/stc/SE00988CH): Modify Lycoming aircraft engine Model O-235-C2C rated at maximum continuous 108 hp at 2600 rpm and 6.75:1 compression ratio to maximum continuous 115 at 2700 rpm and 8.5:1 compression ratio. Precision Engine. Lists O-235-C2C
- [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
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation
- [STC SE5173NM](https://openairdocs.org/stc/SE5173NM): Installation of a replacement oil cooler adaptor, P/N ADC-310. Aviation Development Corporation
- [STC SE2203NM](https://openairdocs.org/stc/SE2203NM): Installation of high compression pistons. Godwin John B Jr. Lists O-235-L2C
- [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co
- [STC SE2606CE](https://openairdocs.org/stc/SE2606CE): Add unleaded and leaded automotive gasoline, 91 minimum antiknock index(RON+MON)/2 per ASTM Specification D-439. Petersen Aviation Inc. Lists O-235-L2A
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp
- [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. Lists O-235-C1
- [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
- [STC SE5945SW](https://openairdocs.org/stc/SE5945SW): Grind mitrided choked engine cylinders .010-inch oversize and install .010-inch oversize pistons and rings. Superior Air Parts. Lists O-235-K2A
- [STC SE5924SW](https://openairdocs.org/stc/SE5924SW): Installation of stainless steel replacement exhaust studs on AVCO engines. Perrigo & Steele Aircraft Engr Company
- [STC SE1976SW](https://openairdocs.org/stc/SE1976SW): Manufacture of new cylinder barrels and rebarreling with original cylinder head. Gary Aerospace Corp
- [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
- [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
- [STC SE2364NM](https://openairdocs.org/stc/SE2364NM): Modification to lower horsepower rating from 118 H.P. at 2800 RPM to 115 H.P. at 2800 RPM for takeoff and 115 H.P. at 2700 RPM to 108 H.P. at 2600 RPM for maximum continuous. Snohomish Flying Svc Inc. Lists O-235-L2C
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec
- [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines. AMS/OIL
- [STC SE5CE](https://openairdocs.org/stc/SE5CE): Prestolite ALK-5001 alternator. Larsen Industries

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