# Continental IO-346 series

- Type: Engine model (FAA registry)
- Registry code: 17033
- Manufacturer (registry): CONT MOTOR
- Model: IO-346 SERIES
- Engine type: Reciprocating
- Power: 165 hp
- Data sheet: [TCDS E3CE](https://openairdocs.org/tcds/E3CE) (OpenAirDocs)
- Holder: Continental Aerospace Technologies, Inc.
- Installed in: 131 registered aircraft
- Page: https://openairdocs.org/engine/continental-io-346-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 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 2012-03-06](https://openairdocs.org/ad/2012-03-06): Fuel servo diaphragm · Continental Motors 6-260-A, 6-285-A, 6-285-B and 482 more. Effective Feb 24, 2012
- [AD 2010-11-04](https://openairdocs.org/ad/2010-11-04): Hydraulic lifters · Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 190 more. Effective Jun 16, 2010
- [AD 95-03-14](https://openairdocs.org/ad/95-03-14): Engine Mount Brackets · Continental Motors IO-346-A, IO-346-B, IO-520-C and 2 more. Effective Mar 13, 1995
- [AD 91-19-03](https://openairdocs.org/ad/91-19-03): Oil Filter · Continental Motors 6-285-A, 6-285-B, 6-285-BA and 169 more. Effective Sep 29, 1991
- [AD 79-05-09](https://openairdocs.org/ad/79-05-09): Oil Pump Assembly Or Oil Pressure Relief Valve Screw And/Or Plunger · Teledyne Continental Motors 6-285-CA, GTSIO-520-C, GTSIO-520-D and 60 more. Effective Mar 12, 1979

Historical (superseded or no longer in force):

- [AD 94-09-07](https://openairdocs.org/ad/94-09-07) (historical): Engine Mount Brackets · Teledyne Continental Motors IO-346-A, IO-346-B, IO-520-C and 2 more. Effective Jul 5, 1994

## Information bulletins (advisory) (3)

- [SAIB NE-16-13](https://openairdocs.org/saib/NE-16-13): Powerplant - Prohibited use of sealant. Issued Mar 8, 2016
- [SAIB NE-13-15](https://openairdocs.org/saib/NE-13-15): Engine Controls: Continental Motors, Inc. (CMI) Throttle and Mixture Control Levers. Issued Feb 8, 2013
- [SAIB NE-13-04](https://openairdocs.org/saib/NE-13-04): Continental Motors, Inc. (CMI) Connecting Rod Piston Pin Bushing Inspection. Issued Oct 31, 2012

## Registered aircraft (131, first 50)

- [N1000J](https://openairdocs.org/aircraft/N1000J): [Eagle Mountain Aviation Inc](https://openairdocs.org/faa-owner/EAGLE%20MOUNTAIN%20AVIATION%20INC), [Owasso, OK](https://openairdocs.org/faa-place/OK/Owasso), built 1966, S/N M-1000
- [N1167M](https://openairdocs.org/aircraft/N1167M): [N1167m LLC](https://openairdocs.org/faa-owner/N1167M%20LLC), [Saint Peters, MO](https://openairdocs.org/faa-place/MO/Saint%20Peters), built 1967, S/N M-1082
- [N1226H](https://openairdocs.org/aircraft/N1226H): [Thorvilson Samuel R](https://openairdocs.org/faa-owner/THORVILSON%20SAMUEL%20R), [Palmer, AK](https://openairdocs.org/faa-place/AK/Palmer), built 1948, S/N 15AC-238
- [N1402L](https://openairdocs.org/aircraft/N1402L): [Raskin Michael](https://openairdocs.org/faa-owner/RASKIN%20MICHAEL), [Henderson, NV](https://openairdocs.org/faa-place/NV/Henderson), built 1965, S/N M-791
- [N1406L](https://openairdocs.org/aircraft/N1406L): [Brainerd Philip S](https://openairdocs.org/faa-owner/BRAINERD%20PHILIP%20S), [Lake Placid, FL](https://openairdocs.org/faa-place/FL/Lake%20Placid), built 1965, S/N M-795
- [N1409L](https://openairdocs.org/aircraft/N1409L): [Musketeer Flying Club LLC](https://openairdocs.org/faa-owner/MUSKETEER%20FLYING%20CLUB%20LLC), [Plano, TX](https://openairdocs.org/faa-place/TX/Plano), built 1965, S/N M-798
- [N1414L](https://openairdocs.org/aircraft/N1414L): [Brown Joseph T](https://openairdocs.org/faa-owner/BROWN%20JOSEPH%20T), [Saginaw, MI](https://openairdocs.org/faa-place/MI/Saginaw), built 1965, S/N M-806
- [N1423L](https://openairdocs.org/aircraft/N1423L): [Medi Carriers Of Wisconsin Inc](https://openairdocs.org/faa-owner/MEDI%20CARRIERS%20OF%20WISCONSIN%20INC), [Greenville, WI](https://openairdocs.org/faa-place/WI/Greenville), built 1965, S/N M-817
- [N1426L](https://openairdocs.org/aircraft/N1426L): [Martin Michael D](https://openairdocs.org/faa-owner/MARTIN%20MICHAEL%20D), [Decatur, TX](https://openairdocs.org/faa-place/TX/Decatur), built 1965, S/N M-820
- [N1431L](https://openairdocs.org/aircraft/N1431L): [Jke Family Fun Entertainment Inc](https://openairdocs.org/faa-owner/JKE%20FAMILY%20FUN%20ENTERTAINMENT%20INC), [Searcy, AR](https://openairdocs.org/faa-place/AR/Searcy), built 1965, S/N M-827
- [N1432L](https://openairdocs.org/aircraft/N1432L): [Strydom Cornelis F](https://openairdocs.org/faa-owner/STRYDOM%20CORNELIS%20F), [Liberal, KS](https://openairdocs.org/faa-place/KS/Liberal), built 1965, S/N M-826
- [N1434L](https://openairdocs.org/aircraft/N1434L): [Post Greg G](https://openairdocs.org/faa-owner/POST%20GREG%20G), [Mapleton, KS](https://openairdocs.org/faa-place/KS/Mapleton), built 1965, S/N M-829
- [N1436L](https://openairdocs.org/aircraft/N1436L): [Delis Costa Z](https://openairdocs.org/faa-owner/DELIS%20COSTA%20Z), [Heyburn, ID](https://openairdocs.org/faa-place/ID/Heyburn), S/N M-831
- [N1441L](https://openairdocs.org/aircraft/N1441L): [Sayre Jeremy Q](https://openairdocs.org/faa-owner/SAYRE%20JEREMY%20Q), [Livonia, MO](https://openairdocs.org/faa-place/MO/Livonia), built 1965, S/N M-835
- [N1444L](https://openairdocs.org/aircraft/N1444L): [Clifton Gary R](https://openairdocs.org/faa-owner/CLIFTON%20GARY%20R), [Fowler, IN](https://openairdocs.org/faa-place/IN/Fowler), built 1965, S/N M-838
- [N1450L](https://openairdocs.org/aircraft/N1450L): [Byrd Aviation LLC](https://openairdocs.org/faa-owner/BYRD%20AVIATION%20LLC), [Marshfield, MO](https://openairdocs.org/faa-place/MO/Marshfield), built 1965, S/N M-845
- [N1462L](https://openairdocs.org/aircraft/N1462L): [Schneider Matthew B](https://openairdocs.org/faa-owner/SCHNEIDER%20MATTHEW%20B), [Laughlin Afb, TX](https://openairdocs.org/faa-place/TX/Laughlin%20Afb), S/N M-857
- [N1463L](https://openairdocs.org/aircraft/N1463L): [Spears Martin J](https://openairdocs.org/faa-owner/SPEARS%20MARTIN%20J), [Havelock, NC](https://openairdocs.org/faa-place/NC/Havelock), built 1965, S/N M-858
- [N1465L](https://openairdocs.org/aircraft/N1465L): [Loehr Fred A III](https://openairdocs.org/faa-owner/LOEHR%20FRED%20A%20III), [Rio Rancho, NM](https://openairdocs.org/faa-place/NM/Rio%20Rancho), built 1965, S/N M-862
- [N1466L](https://openairdocs.org/aircraft/N1466L): [Steel Randy W](https://openairdocs.org/faa-owner/STEEL%20RANDY%20W), [Madras, OR](https://openairdocs.org/faa-place/OR/Madras), S/N M-880
- [N1468L](https://openairdocs.org/aircraft/N1468L): [Ch Repairs LLC](https://openairdocs.org/faa-owner/CH%20REPAIRS%20LLC), [Statesboro, GA](https://openairdocs.org/faa-place/GA/Statesboro), S/N M-864
- [N1470L](https://openairdocs.org/aircraft/N1470L): [Al-Rubaiie Haider A](https://openairdocs.org/faa-owner/AL-RUBAIIE%20HAIDER%20A), [Fort Worth, TX](https://openairdocs.org/faa-place/TX/Fort%20Worth), built 1965, S/N M-866
- [N1471L](https://openairdocs.org/aircraft/N1471L): [Lee Michael Jason](https://openairdocs.org/faa-owner/LEE%20MICHAEL%20JASON), [Berryville, VA](https://openairdocs.org/faa-place/VA/Berryville), built 1965, S/N M-867
- [N1475L](https://openairdocs.org/aircraft/N1475L): [2328 Charlie Victor LLC](https://openairdocs.org/faa-owner/2328%20CHARLIE%20VICTOR%20LLC), [Richmond, KY](https://openairdocs.org/faa-place/KY/Richmond), built 1965, S/N M-871
- [N1477L](https://openairdocs.org/aircraft/N1477L): [Cooper Jonathan Thomas](https://openairdocs.org/faa-owner/COOPER%20JONATHAN%20THOMAS), [Tempe, AZ](https://openairdocs.org/faa-place/AZ/Tempe), built 1965, S/N M-874
- [N1478L](https://openairdocs.org/aircraft/N1478L): [Baline Lonny R](https://openairdocs.org/faa-owner/BALINE%20LONNY%20R), [Harleysville, PA](https://openairdocs.org/faa-place/PA/Harleysville), built 1965, S/N M-873
- [N1481L](https://openairdocs.org/aircraft/N1481L): [Osceola Aviation Services Inc](https://openairdocs.org/faa-owner/OSCEOLA%20AVIATION%20SERVICES%20INC), [Lake City, FL](https://openairdocs.org/faa-place/FL/Lake%20City), built 1965, S/N M-879
- [N1487L](https://openairdocs.org/aircraft/N1487L): [Sheets Mark W](https://openairdocs.org/faa-owner/SHEETS%20MARK%20W), [Chugiak, AK](https://openairdocs.org/faa-place/AK/Chugiak), built 1965, S/N M-887
- [N1492L](https://openairdocs.org/aircraft/N1492L): [Salzer Mychael D](https://openairdocs.org/faa-owner/SALZER%20MYCHAEL%20D), [Coulterville, IL](https://openairdocs.org/faa-place/IL/Coulterville), S/N M-892
- [N1498L](https://openairdocs.org/aircraft/N1498L): [Wheaton Blake L](https://openairdocs.org/faa-owner/WHEATON%20BLAKE%20L), [Atlanta, GA](https://openairdocs.org/faa-place/GA/Atlanta), built 1966, S/N M-898
- [N1499L](https://openairdocs.org/aircraft/N1499L): [Hicks Philip R Jr](https://openairdocs.org/faa-owner/HICKS%20PHILIP%20R%20JR), [Knoxville, TN](https://openairdocs.org/faa-place/TN/Knoxville), built 1966, S/N M-899
- [N16TH](https://openairdocs.org/aircraft/N16TH): [Mosquera Daniel](https://openairdocs.org/faa-owner/MOSQUERA%20DANIEL), [Miami, FL](https://openairdocs.org/faa-place/FL/Miami), built 1966, S/N M-994
- [N2305W](https://openairdocs.org/aircraft/N2305W): [Robison Charles R](https://openairdocs.org/faa-owner/ROBISON%20CHARLES%20R), [Big Spring, TX](https://openairdocs.org/faa-place/TX/Big%20Spring), built 1965, S/N M-907
- [N2306W](https://openairdocs.org/aircraft/N2306W): [Freeman Darrell](https://openairdocs.org/faa-owner/FREEMAN%20DARRELL), [Tacoma, WA](https://openairdocs.org/faa-place/WA/Tacoma), built 1965, S/N M-908
- [N2307W](https://openairdocs.org/aircraft/N2307W): [Mitchell Kenneth M](https://openairdocs.org/faa-owner/MITCHELL%20KENNETH%20M), [Saint Jacob, IL](https://openairdocs.org/faa-place/IL/Saint%20Jacob), S/N M-909
- [N2308W](https://openairdocs.org/aircraft/N2308W): [Lach John J](https://openairdocs.org/faa-owner/LACH%20JOHN%20J), [Austin, TX](https://openairdocs.org/faa-place/TX/Austin), built 1965, S/N M-910
- [N2314W](https://openairdocs.org/aircraft/N2314W): [Hansen Robert J](https://openairdocs.org/faa-owner/HANSEN%20ROBERT%20J), [Bainbridge, IN](https://openairdocs.org/faa-place/IN/Bainbridge), built 1965, S/N M-915
- [N2321W](https://openairdocs.org/aircraft/N2321W): [Barre Fly Aviation LLC](https://openairdocs.org/faa-owner/BARRE%20FLY%20AVIATION%20LLC), [Bryan, TX](https://openairdocs.org/faa-place/TX/Bryan), built 1965, S/N M-920
- [N2330W](https://openairdocs.org/aircraft/N2330W): [Larsen Bo](https://openairdocs.org/faa-owner/LARSEN%20BO), [Portland, OR](https://openairdocs.org/faa-place/OR/Portland), built 1965, S/N M-927
- [N2331W](https://openairdocs.org/aircraft/N2331W): [Empire Contractors](https://openairdocs.org/faa-owner/EMPIRE%20CONTRACTORS), [Shelby, MI](https://openairdocs.org/faa-place/MI/Shelby), built 1965, S/N M-928
- [N2333W](https://openairdocs.org/aircraft/N2333W): [Village Of Choudrant](https://openairdocs.org/faa-owner/VILLAGE%20OF%20CHOUDRANT), [Choudrant, LA](https://openairdocs.org/faa-place/LA/Choudrant), built 1965, S/N M-932
- [N2335W](https://openairdocs.org/aircraft/N2335W): [White Traver O](https://openairdocs.org/faa-owner/WHITE%20TRAVER%20O), [Inkom, ID](https://openairdocs.org/faa-place/ID/Inkom), built 1965, S/N M-931
- [N2336W](https://openairdocs.org/aircraft/N2336W): [Frankenfield Francis R](https://openairdocs.org/faa-owner/FRANKENFIELD%20FRANCIS%20R), [Quakertown, PA](https://openairdocs.org/faa-place/PA/Quakertown), built 1966, S/N M-933
- [N2341W](https://openairdocs.org/aircraft/N2341W): [Steele Benjamin A](https://openairdocs.org/faa-owner/STEELE%20BENJAMIN%20A), [Eugene, OR](https://openairdocs.org/faa-place/OR/Eugene), S/N M-940
- [N2343W](https://openairdocs.org/aircraft/N2343W): [Rogers Allen F](https://openairdocs.org/faa-owner/ROGERS%20ALLEN%20F), [Gilbert, WV](https://openairdocs.org/faa-place/WV/Gilbert), built 1965, S/N M-942
- [N2346W](https://openairdocs.org/aircraft/N2346W): [Raynor Jason M](https://openairdocs.org/faa-owner/RAYNOR%20JASON%20M), [Elizabeth City, NC](https://openairdocs.org/faa-place/NC/Elizabeth%20City), S/N M-944
- [N2349W](https://openairdocs.org/aircraft/N2349W): [Pax Theodore Llewellyn](https://openairdocs.org/faa-owner/PAX%20THEODORE%20LLEWELLYN), [Fall Creek, WI](https://openairdocs.org/faa-place/WI/Fall%20Creek), built 1966, S/N M-947
- [N2351W](https://openairdocs.org/aircraft/N2351W): [Webb Brian C](https://openairdocs.org/faa-owner/WEBB%20BRIAN%20C), [Owasso, OK](https://openairdocs.org/faa-place/OK/Owasso), built 1966, S/N M-949
- [N2352W](https://openairdocs.org/aircraft/N2352W): [Alligator Air Transport LLC](https://openairdocs.org/faa-owner/ALLIGATOR%20AIR%20TRANSPORT%20LLC), [Fort Lauderdale, FL](https://openairdocs.org/faa-place/FL/Fort%20Lauderdale), S/N M-950
- [N2358W](https://openairdocs.org/aircraft/N2358W): [Beyer Kaleb A](https://openairdocs.org/faa-owner/BEYER%20KALEB%20A), [Danville, AR](https://openairdocs.org/faa-place/AR/Danville), built 1966, S/N M-955

All 131: https://openairdocs.org/engine/continental-io-346-series/aircraft.md

## NTSB investigations (224, 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 ERA23LA119](https://openairdocs.org/ntsb/ERA23LA119), Jan 28, 2023: Beech A23 (N16TH), Miami, FL, substantial damage. Probable cause: The pilot’s mismanagement of fuel supply, which resulted in fuel starvation.
- [NTSB ERA21FA237](https://openairdocs.org/ntsb/ERA21FA237), Jun 1, 2021: Beech A23 (N8780M), Pinnacle, NC, substantial damage, 1 fatal. Probable cause: The flight instructor’s mismanagement of the available fuel, which resulted in a total loss of engine power due to fuel starvation.
- [NTSB ERA21LA012](https://openairdocs.org/ntsb/ERA21LA012), Oct 3, 2020: Beech 23 (N8783M), Spruce Pines, NC, substantial damage. Probable cause: The pilot's failure to familiarize himself with the wind conditions at the destination airport and his failure to attain the proper touchdown point during landing, which resulted in a long, tailwind…
- [NTSB WPR20CA205](https://openairdocs.org/ntsb/WPR20CA205), Jul 5, 2020: Beech 23 (N8868M), Sedona, AZ, substantial damage. Probable cause: The pilot's inability to maintain a climb after an attempted takeoff in high density altitude conditions, which resulted in a forced landing on a road and subsequent landing gear collapse.
- [NTSB CEN20LA211](https://openairdocs.org/ntsb/CEN20LA211), Jun 4, 2020: Beech 23 (N7941L), Cleburne, TX, substantial damage. Probable cause: The total loss of engine power due to metal fatigue failure of the No. 1 cylinder wall.
- [NTSB ERA19TA276](https://openairdocs.org/ntsb/ERA19TA276), Sep 10, 2019: Beech 23 (N3555R), Panama City, FL, substantial damage. Probable cause: A total loss of engine power due to an obstructed fuel vent, and the flight instructor's failure to ensure that the student did an adequate preflight inspection, which resulted in a forced landing.
- [NTSB CEN19LA194](https://openairdocs.org/ntsb/CEN19LA194), Jul 1, 2019: Beech A23 (N3598R), Fort Smith, AR, substantial damage. Probable cause: A total loss of engine power due to fuel starvation as a result of the flight instructor's fuel mismanagement.
- [NTSB CEN18LA220](https://openairdocs.org/ntsb/CEN18LA220), Jun 7, 2018: Beech A23 (N8775M), Sedalia, MO, substantial damage. Probable cause: The pilot’s loss of directional control during the landing rollout due to the unexpected wind shift, which resulted in a runway excursion.
- [NTSB GAA17CA148](https://openairdocs.org/ntsb/GAA17CA148), Feb 14, 2017: Beech A23 (N425RS), Beckwourth, CA, substantial damage. Probable cause: The student pilot’s inadvertent use of the control yoke to correct for a drift and his subsequent failure to maintain directional control during takeoff.
- [NTSB GAA16CA177](https://openairdocs.org/ntsb/GAA16CA177), Apr 5, 2016: Beech A23 (N5791V), Hulbert, OK, substantial damage. Probable cause: The pilot's inadequate fuel planning, which resulted in fuel exhaustion, and collision with terrain.
- [NTSB ERA16LA090](https://openairdocs.org/ntsb/ERA16LA090), Jan 16, 2016: Beech A23 (N3680Q), Kingston, TN, substantial damage. Probable cause: The pilot's inadequate preflight inspection and fuel planning and his improper in-flight fuel management, which resulted in a total loss of engine power due to fuel starvation.
- [NTSB ERA13LA285](https://openairdocs.org/ntsb/ERA13LA285), Jun 13, 2013: Beech A23 (N3542R), Oxford, NC, substantial damage. Probable cause: The failure to comply with an airworthiness directive by maintenance personnel and incorrect reinstallation of the fuel selector handle by unknown personnel, which resulted in fuel starvation.
- [NTSB CEN13LA109](https://openairdocs.org/ntsb/CEN13LA109), Dec 18, 2012: Beech A23 (N3573R), Grand Isle, NE, substantial damage. Probable cause: The student pilot's inadequate fuel management due to distraction by airport traffic, which resulted in a loss of engine power due to fuel starvation.
- [NTSB WPR13FA056](https://openairdocs.org/ntsb/WPR13FA056), Nov 26, 2012: Mcdaniel RV-6-CH (N424D), Scio, OR, substantial damage, 2 fatal. Probable cause: The pilot's decision to perform aerobatics in an airplane that was prohibited from aerobatics as stated in its operating limitations document, which resulted in the failure of the right wing spar.
- [NTSB ERA12FA458](https://openairdocs.org/ntsb/ERA12FA458), Jul 16, 2012: Beech A23 (N8771M), Laytonsville, MD, substantial damage, 1 fatal. Probable cause: The pilot’s failure to ensure that the fuel selector handle was correctly positioned, which resulted in an interruption of fuel to the engine and a loss of engine power during the takeoff, which…
- [NTSB ERA11CA309](https://openairdocs.org/ntsb/ERA11CA309), May 21, 2011: Beech A23 (N3548R), Greene, NY, substantial damage. Probable cause: The pilot's decision to continue a visual approach with low visibility and in heavy rain and his subsequent failure to maintain clearance from trees.
- [NTSB ERA11CA275](https://openairdocs.org/ntsb/ERA11CA275), May 1, 2011: Beech A23 (N3594R), Hammonton, NJ, substantial damage. Probable cause: The pilot's failure to maintain directional control during the aborted takeoff.
- [NTSB WPR10CA338](https://openairdocs.org/ntsb/WPR10CA338), Jul 3, 2010: Adams John R JR Piel Diamant (N278JA), Montezuma, UT, substantial damage. Probable cause: The pilot's failure to maintain clearance from road signs during landing.
- [NTSB CHI08CA173](https://openairdocs.org/ntsb/CHI08CA173), Jun 29, 2008: Beech A23A (N701DW), Sheboygan, WI, substantial damage. Probable cause: The pilot's improper fuel management that led to fuel starvation and the loss of engine power. Contributing to the accident was the drainage ditch.
- [NTSB SEA08CA049](https://openairdocs.org/ntsb/SEA08CA049), Nov 29, 2007: Beech A23 (N8770M), Death Valley, CA, substantial damage. Probable cause: The pilot's improper flare during landing.
- [NTSB DEN07FA071](https://openairdocs.org/ntsb/DEN07FA071), Mar 13, 2007: Beech A23A (N4761J), Holman, NM, destroyed, 1 fatal. Probable cause: The pilot's failure to maintain a safe altitude and clearance, and his improper inflight planning/decision to postpone initiating a climbing turn to avoid obstructions.
- [NTSB CHI06LA149](https://openairdocs.org/ntsb/CHI06LA149), May 28, 2006: Beech A23 (N8776M), Troy, MI, substantial damage. Probable cause: The improper flare and improper recovery from a bounced landing by the unknown pilot.
- [NTSB LAX06FA055](https://openairdocs.org/ntsb/LAX06FA055), Dec 12, 2005: Beech A23 (N3590R), Mammoth Lakes, CA, destroyed, 2 fatal. Probable cause: a loss of engine power for undetermined reasons, and, the failure of the pilot to maintain an adequate airspeed while maneuvering following the loss of power, which resulted in a stall/spin.
- [NTSB LAX05LA258](https://openairdocs.org/ntsb/LAX05LA258), Aug 3, 2005: Beech A23 (N1456L), Rancho Murieta, CA, substantial damage. Probable cause: fuel starvation due to the inadequate fuel system management by both pilots. Also causal was the inadequate preflight inspection by both the instructor and student and their failure to verify the…
- [NTSB NYC05WA064](https://openairdocs.org/ntsb/NYC05WA064), Mar 26, 2005: Beech A23A (N4705J), Ottengruner, Germany, substantial damage, 3 fatal
- [NTSB ATL04CA136](https://openairdocs.org/ntsb/ATL04CA136), Jun 20, 2004: Beech A23 (N1435L), Columbia, TN, substantial damage. Probable cause: The pilot's failure to maintain clearance from trees during climb and the pilot's failure to execute a go-around before completing the approach to land.
- [NTSB FTW04IA134](https://openairdocs.org/ntsb/FTW04IA134), May 20, 2004: Beech A23A (N6943Q), Kress, TX, incident, minor damage. Probable cause: The in-flight separation of the crankshaft for undetermined reasons.
- [NTSB MIA04LA081](https://openairdocs.org/ntsb/MIA04LA081), May 8, 2004: Beech A23A (N3659Q), Crystal River, FL, substantial damage. Probable cause: The pilots failure to maintain directional control during the landing rollout, which resulted in the airplane departing the runway and incurring damage.
- [NTSB NYC04CA019](https://openairdocs.org/ntsb/NYC04CA019), Nov 1, 2003: Beech A23 (N8772M), Salem, NJ, substantial damage. Probable cause: The pilot's delay in aborting the takeoff after his failure to obtain a proper climb rate. Factors related to the accident were the tailwind conditions, and the wet turf runway.
- [NTSB ATL03LA084](https://openairdocs.org/ntsb/ATL03LA084), Apr 27, 2003: Beech A23 (N1483L), Brunswick, GA, substantial damage. Probable cause: Maintenance personnel's failure to secure the fitting on a fuel line, which resulted in a loss of engine power.
- [NTSB FTW03LA023](https://openairdocs.org/ntsb/FTW03LA023), Oct 22, 2002: Beech A23 (N1451L), Farmington, AR, substantial damage. Probable cause: The loss of engine power due to the failure of the mechanical fuel pump.
- [NTSB CHI02CA182](https://openairdocs.org/ntsb/CHI02CA182), Jul 4, 2002: Beech A-23-23 (N3545R), Monroe, MI, substantial damage. Probable cause: The pilot misjudging the flare, and his loss of directional control during landing. The soft terrain was a factor.
- [NTSB ANC01LA141](https://openairdocs.org/ntsb/ANC01LA141), Sep 1, 2001: Jacobs KE-1-A (N24KJ), Willow, AK, substantial damage. Probable cause: A loss of engine power during cruise flight for an undertermined reason.
- [NTSB CHI01FA297](https://openairdocs.org/ntsb/CHI01FA297), Aug 30, 2001: Beech A23 (N3516R), Stevens Point, WI, destroyed, 3 fatal. Probable cause: the pilot not obtaining/maintaining aircraft control.
- [NTSB MIA01FA223](https://openairdocs.org/ntsb/MIA01FA223), Aug 19, 2001: Beech A23 (N8869M), Blairsville, GA, destroyed, 3 fatal. Probable cause: The failure of the pilot to maintain airspeed resulting in an inadvertent stall an subsequent in-flight collision with trees then the ground during the uncontrolled descent.
- [NTSB NYC01LA010](https://openairdocs.org/ntsb/NYC01LA010), Oct 6, 2000: Beech BE-23 (N8895M), Lincoln Park, NJ, substantial damage. Probable cause: The pilot-in-command's failure to maintain directional control while taxiing.
- [NTSB SEA00LA172](https://openairdocs.org/ntsb/SEA00LA172), Aug 26, 2000: Cessna 411 (N411TK), Boise, ID, substantial damage. Probable cause: Aircraft control was not maintained during approach for landing.
- [NTSB NYC00FA094](https://openairdocs.org/ntsb/NYC00FA094), Mar 19, 2000: Beech A23 (N1410L), Akron, OH, destroyed, 1 fatal. Probable cause: The pilot's improper decision to operate the airplane with known deficiencies. A factor in this accident was the inability of the engine to attain full power for undetermined reasons.
- [NTSB NYC00LA059](https://openairdocs.org/ntsb/NYC00LA059), Dec 18, 1999: Beech BE-23 (N1452L), Blacksburg, VA, substantial damage. Probable cause: The pilot in command's failure to recover from a bounced landing.
- [NTSB NYC99LA223](https://openairdocs.org/ntsb/NYC99LA223), Sep 12, 1999: Beech A23 (N3508R), Carlisle, PA, substantial damage. Probable cause: The pilot's improper fuel management, resulting in fuel starvation.
- [NTSB SEA99FA112](https://openairdocs.org/ntsb/SEA99FA112), Jul 10, 1999: Beech A23 (N8873M), Eatonville, WA, substantial damage, 1 fatal. Probable cause: Improper fuel management which led to fuel starvation.
- [NTSB MIA99LA190](https://openairdocs.org/ntsb/MIA99LA190), Jun 27, 1999: Beech A23 (N1455L), Pinehurst, NC, substantial damage. Probable cause: The flight crew's improper fuel management resulting in engine loss of power due to fuel starvation and damage to the airplane due to collision with trees in the subsequent forced landing.
- [NTSB MIA99LA115](https://openairdocs.org/ntsb/MIA99LA115), Mar 28, 1999: Beech A23 (N8883M), Homestead, FL, substantial damage. Probable cause: The pilots improper decision not to land straight ahead after sustaining a reported loss of engine power on initial take off climb with sufficient runway remaining, and improper recovery from a…
- [NTSB FTW97LA056](https://openairdocs.org/ntsb/FTW97LA056), Dec 7, 1996: Beech A23 (N3597R), Conway, AR, substantial damage. Probable cause: the pilot's inadequate compensation for the crosswind during the landing, and his failure to remain clear of the tree during the attempted go-around. The crosswind and the proximity of the small tree…
- [NTSB ATL96LA131](https://openairdocs.org/ntsb/ATL96LA131), Sep 20, 1996: Beech A23 (N8879M), Tarboro, NC, substantial damage. Probable cause: fatigue failure of the propeller blade. Factors relating to the accident were: corrosion pit(s) on the propeller blade, and inadequate maintenance/inspection of the propeller.
- [NTSB CHI96LA131](https://openairdocs.org/ntsb/CHI96LA131), Apr 13, 1996: Beech A23A (N3613Q), Saginaw, MI, substantial damage. Probable cause: the student pilot's improper flare and improper recovery from a bounced landing.
- [NTSB MIA96FA099](https://openairdocs.org/ntsb/MIA96FA099), Mar 15, 1996: Beech A23A (N2300W), Sarasota, FL, destroyed, 1 fatal. Probable cause: The pilot's failure to maintain airspeed while maneuvering (VSO) resulting in an inadvertent in-flight loss of control (stall/spin) and subsequent in-flight collision with terrain.
- [NTSB BFO94LA157](https://openairdocs.org/ntsb/BFO94LA157), Aug 28, 1994: Beech A-23 (N1462L), Felton, DE, substantial damage. Probable cause: The pilot's improper recovery from a bounced landing and failure to maintain directional control. A factor is the pilot's failure to do a go around.
- [NTSB CHI94LA044](https://openairdocs.org/ntsb/CHI94LA044), Dec 6, 1993: Beech 23 (N6959Q), Denison, IA, substantial damage. Probable cause: THE PILOT-IN-COMMAND'S INADEQUATE REMEDIAL ACTION. A FACTOR ASSOCIATED WITH THE ACCIDENT IS THE STUDENT PILOT'S INADEQUATE AIRCRAFT HANDLING.
- [NTSB CHI93LA269](https://openairdocs.org/ntsb/CHI93LA269), Jul 21, 1993: Beech A23 (N3578R), Boyceville, WI, destroyed, 1 fatal. Probable cause: the failure of the pilot to attain the proper touchdown point, and his failure to perform a go-around.

All 224: https://openairdocs.org/engine/continental-io-346-series/ntsb.md

## FAA accident and incident reports (149, 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.

- [Accident 20230128001999A](https://openairdocs.org/incident/20230128001999A), Jan 28, 2023: Beech A23A (N16TH), Miami, FL, Substantial damage. Part 91 operation Beech aircraft A-23A, [privacy data omitted], serial number M-994, lost engine power, with one pilot and three passengers on board. Emergency…
- [Accident 20210601007409A](https://openairdocs.org/incident/20210601007409A), Jun 1, 2021: Beech A23 (N8780M), Pinnacle, NC, Destroyed, 1 fatal. N8780M suffered engine loss for unknown reasons. Fuel selector was found on the right fuel tank and the magneto switch was found in the off position. Aircraft…
- [Incident 20210507008969I](https://openairdocs.org/incident/20210507008969I), May 7, 2021: Beech A23 (N3549R), Kalamazoo, MI, Minor damage. On may 05, 2021 at 14:40 eastern daylight time (EDT), a 1965 Beech A23 aircraft, N3549R, registered to [privacy data omitted], operated by a private pilot for…
- [Accident 20201003016859A](https://openairdocs.org/incident/20201003016859A), Oct 3, 2020: Beech A23 (N8783M), Spruce Pines, NC, Substantial damage. The pilot stated the flight was normal from K62 to 7A8. Upon arriving at 7A8 at an altitude of 7500 ft., he performed a circling descent to enter the traffic…
- [Accident 20200705005189A](https://openairdocs.org/incident/20200705005189A), Jul 5, 2020: Beech A23 (N8868M), Sedona, AZ, Substantial damage. On July 5, 2020, at 1124 MST, a 1964 Beech A23, N8868M, [privacy data omitted], failed to gain altitude during takeoff climbout while conducting a personal…
- [Accident 20200604011039A](https://openairdocs.org/incident/20200604011039A), Jun 4, 2020: Beech A23A (N7941L), Cleburne, TX, Substantial damage. On June 4, 2020, at 0955 central daylight time, a Beechcraft A-23, N7941L, lost total engine power while cruising at 1200 feet AGL. The pilot made an…
- [Accident 20190910014579A](https://openairdocs.org/incident/20190910014579A), Sep 10, 2019: Beech A23 (N3555R), Panama City, FL, Substantial damage. Flight was a 14 CFR 91 instructional flight when the accident occurred. Aircraft was on final when the student pilot tried to add power but the engine did not…
- [Accident 20190701008829A](https://openairdocs.org/incident/20190701008829A), Jul 1, 2019: Beech A23 (N3598R), Fort Smith, AR, Substantial damage. N3598R departed Fort Smith Regional Airport (kfsm) at 10:30 am. On 1 July, 2019 with pilot and student onboard. After flying approximately 45 minutes at kfsm…
- [Accident 20180607010759A](https://openairdocs.org/incident/20180607010759A), Jun 7, 2018: Beech A23 (N8775M), Sedalia, MO, Substantial damage. Aircraft landed on runway 18 at Sedalia Memorial Airport with winds reported at 7 knots from 230 degrees. On touchdown, the pilot stated the aircraft swerved…
- [Incident 20180511007729I](https://openairdocs.org/incident/20180511007729I), May 11, 2018: Beech A23 (N1470L), Fort Worth, TX, No damage. The incident occurred on may 11, 2018, at 1745 local time. The pilot was the sole occupant of the aircraft. There were no injuries. The aircraft incurred no…
- [Incident 20170517004539I](https://openairdocs.org/incident/20170517004539I), May 17, 2017: Beech A23A (N5788V), New Plymouth, OH, Minor damage. The aircraft departed vinton county airport (221) and developed a loss of engine power. The pilot returned to the airport and elected to land with a tail wind…
- [Accident 20170214006109A](https://openairdocs.org/incident/20170214006109A), Feb 14, 2017: Beech A23 (N425RS), Beckworth, CA, Substantial damage. Student pilot was conducting solo flight training. Student pilot set up to conduct a touch and go at beckwourth, CA (O02). Airplane landed on east end of…
- [Accident 20160405003279A](https://openairdocs.org/incident/20160405003279A), Apr 5, 2016: Beech A23A (N5791V), Beggs, OK, Substantial damage. The following is based on the pilots statement. The pilot planned a VFR flight from huntsville Alabama (mdq) to tulsa Oklahoma (1H6). The flight purpose was to…
- [Accident 20160116005999A](https://openairdocs.org/incident/20160116005999A), Jan 16, 2016: Beech A23A (N3680Q), Kingston, TN, Substantial damage. The accident site was located approximately 1,200 feet from the approach end of runway 5 at riley creek airport (12TN), in Kingston, Tennessee. Initial…
- [Incident 20130817017999I](https://openairdocs.org/incident/20130817017999I), Aug 17, 2013: Beech A23 (N722HB), Sac City, IA, Minor damage. Student pilot was conducting a landing and on flareout aircraft floated increasing altitude above runway. Pilot added full power to go around momentarily…
- [Accident 20130613010629A](https://openairdocs.org/incident/20130613010629A), Jun 13, 2013: Beech A23 (N3542R), Oxford, NC, Substantial damage. This office arrived at the accident site at approximately 1330 hours to investigate N3452R. The aircraft landed in a wheat field tearing off the nose gear and…
- [Incident 20130119000309I](https://openairdocs.org/incident/20130119000309I), Jan 19, 2013: Beech A23 (N1475L), Crystal River, FL, Minor damage. The pilot was attempting his first landing without another pilot in the aircraft familiar with this model. He had just purchased the aircraft on the morning of…
- [Accident 20121218028339A](https://openairdocs.org/incident/20121218028339A), Dec 18, 2012: Beech A23 (N3573R), Grand Island, NE, Substantial damage. Pilot was conducting solo stop and go landings in right closed traffic at the Grand Island Municipal Airport. While on final approach for his third and final…
- [Accident 20121126026049A](https://openairdocs.org/incident/20121126026049A), Nov 26, 2012: Mcdaniel D A/Mcdaniel L RV-6-CH (N424D), Scio, OR, Destroyed, 2 fatal. Right wing departed in flight.
- [Accident 20120716013729A](https://openairdocs.org/incident/20120716013729A), Jul 16, 2012: Beech A23 (N8771M), Laytonsville, MD, Destroyed, 1 fatal. On Monday July 16, 2012 at 19:05 EST, aircraft N8771M a Beechcraft A23 crashed into brush and terrain approximately 500 feet from the end of runway 23 at…
- [Accident 20110521010129A](https://openairdocs.org/incident/20110521010129A), May 21, 2011: Beech A23 (N3548R), Greene, NY, Substantial damage. Investigated the accident of N3548R, a Beech A23 musketeer near the approach end of runway 07 at Greene Airport (4N7) Greene, new york. The [privacy data…
- [Accident 20110501012169A](https://openairdocs.org/incident/20110501012169A), May 1, 2011: Beech A23 (N3594R), Hammonton, NJ, Substantial damage. May 1, 2011PILOT taxied for take-off on runway 3 at Hammonton Municipal Airport (N81). While on the runway he heard another aircraft call for "downwind for…
- [Accident 20100703038929A](https://openairdocs.org/incident/20100703038929A), Jul 3, 2010: Adams John PIEL DIAMAN (N278JA), Blanding, UT, Substantial damage. On 07/03/2010 at approxmanitly 2045 MDT, a amatuer built piel diamant N278JA made a precautionary off airport landing on a hwy SR162 near montezuma, UT. The…
- [Accident 20080629840769A](https://openairdocs.org/incident/20080629840769A), Jun 29, 2008: Beech A23A (N701DW), Sheboygan, WI, Substantial damage. (-23) While on final approach to land on runway 31 at sbm the aircraft engine lost power and stopped. The pilot was unable to restart the engine and…
- [Incident 20071129828279I](https://openairdocs.org/incident/20071129828279I), Nov 29, 2007: Beech A23 (N8770M), Death Valley N, CA, Minor damage. (-23) On November 29, 2007 at approx. 8:30 am local time, pilot was attempting to land at Stovepipe Wells, CA runway 5. Runway sloped away (downhill) as pilot…
- [Accident 20070313002959A](https://openairdocs.org/incident/20070313002959A), Mar 13, 2007: Beech A23A (N4761J), Holman, NM, Destroyed, 1 fatal. (-23) On March 13, 2007 at approx 1600 MST, a Beech BE-23, N4761J, registered to azusa lp of farmers branch, TX, collided with terrain during an off airport…
- [Incident 20060611019919I](https://openairdocs.org/incident/20060611019919I), Jun 11, 2006: Beech A23 (N8866M), Delton, MI. (-23) While in cruise flight, the pilot heard a loud bang from the engine. The engine could not produce enough power to sustain level flight. The pilot turned…
- [Accident 20060528023469A](https://openairdocs.org/incident/20060528023469A), May 28, 2006: Beech A23 (N8776M), Troy, MI, Substantial damage. (-23) On may 28, 2006, at 1740 eastern daylight time, a Beech A23, N8776M, sustained substantial damage during a hard landing on runway 27 (3,550 feet by 60…
- [Incident 20051223030139I](https://openairdocs.org/incident/20051223030139I), Dec 23, 2005: Beech A23 (N8862M), Enid, OK, Minor damage. (-23) On 12/23/2005 at 1930 local, N8862M a BE-23 caught fire shortly after engine start. The pilot stated after turning on all electrical power, he began to…
- [Accident 20051212029399A](https://openairdocs.org/incident/20051212029399A), Dec 12, 2005: Beech A23 (N3590R), Mammoth Lakes, CA, Destroyed, 2 fatal. (-23) N3590R, Beech A-23, VFR, redlands, CA, to Mammoth Lakes, CA, crashed under unknown circumstances in owens valley, just south of Mammoth at 121129PST.…
- [Accident 20050803016639A](https://openairdocs.org/incident/20050803016639A), Aug 3, 2005: Beech A23 (N1454L), Rancho Murieta, CA, Substantial damage. (-23) The aircraft appears to have lost power during it's approach into the Rancho Murieta Airport (riu) and landed short of runway 22. The aircraft came to…
- [Incident 20041201033869I](https://openairdocs.org/incident/20041201033869I), Dec 1, 2004: Beech A23 (N1443L), El Dorado, AR, Substantial damage. (-23) On December 1, 2004, at approximately 1630 hours CST, a Beechcraft BE-23-A23, N1443L, collided with trees while conducting either a takeoff or landing…
- [Incident 20040927023659I](https://openairdocs.org/incident/20040927023659I), Sep 27, 2004: Beech A23A (N2347W), New Braunfels, TX, Minor damage. (-23) On Monday, September 27, 2004 at approximately 12:00 noon, lt. (USAF) mark r. henry was to perform his first solo flight. On the first solo landing, lt.…
- [Accident 20040620017429A](https://openairdocs.org/incident/20040620017429A), Jun 20, 2004: Beech A23 (N1435L), Columbia, TN, Destroyed. (-23) Pilot landed on runway 23 at Hunter field (06TN) Columbia TN and then initiated a take off struck a fence with left stabilator approx. 250 ft. beyond the…
- [Incident 20040519007369I](https://openairdocs.org/incident/20040519007369I), May 19, 2004: Beech A23A (N6943Q), Kress, TX, Minor damage. (-23) On may 19, 2004, while enroute from buffalo airport (1E7) to plainview (pvw), Texas, on a VFR cross country instructional flight cruising at 5500 feet…
- [Accident 20040508017389A](https://openairdocs.org/incident/20040508017389A), May 8, 2004: Beech A23A (N3659Q), Crystal River, FL, Substantial damage. (-23) On may 08, 2004, at approximately 1400 EDT, a Beech BE-23-A23A, N3659Q, registered to david m. velzke, collided with a drainage embankment adjacent to…
- [Accident 20031101030589A](https://openairdocs.org/incident/20031101030589A), Nov 1, 2003: Beech A23 (N8772M), Salem, NJ, Substantial damage. (-23) During takeoff on runway 01 the pilot realized that the aircraft was not going to clear the obstacles at the end of the runway. The 1800 foot runway…
- [Accident 20030427008489A](https://openairdocs.org/incident/20030427008489A), Apr 27, 2003: Beech A23 (N1483L), Brunswick, GA, Destroyed. (-23) The pilot stated that while on a visual approach to runway 7 at kbqk, glynco jetport, Brunswick, Georgia, N1483L began to smoothly lose engine RPM. The…
- [Incident 20030220003509I](https://openairdocs.org/incident/20030220003509I), Feb 20, 2003: Beech A23 (N8862M), Enid, OK, Minor damage. (-23) The aircraft departed runway 17 at the Enid Woodring regional airport, Enid, OK. Shortly after takeoff the engine lost power. The pilot attempted a left…
- [Incident 20030112001629I](https://openairdocs.org/incident/20030112001629I), Jan 12, 2003: Beech A23 (N8766M), Glendale, AZ, Minor damage. (-23) During the landing rollout the pilot lost control of the aircraft and exited off the left side of the runway. The right main landing gear collapsed…
- [Accident 20021022031529A](https://openairdocs.org/incident/20021022031529A), Oct 22, 2002: Beech A23 (N1451L), Farmington, AR, Substantial damage. (-23) On October 22, 2002, approximately 1800 central daylight time, a Beech A23 single-engine airplane, N1451L, was substantially damaged during a forced…
- [Incident 20020802020309I](https://openairdocs.org/incident/20020802020309I), Aug 2, 2002: Beech A23A (N2356W), West Palm Beach, FL, Minor damage. (-23) Mr. Buchkeit was PIC during an instrument training flight, on the return to lantana airport. N2356W a BE-A23 was on final for runway 03, when on short…
- [Accident 20020704038229A](https://openairdocs.org/incident/20020704038229A), Jul 4, 2002: Beech A23 (N3545R), Monroe, MI, Substantial damage. (-23) Aircraft nosed over after landing, nose gear collapsed, propeller struck runway.
- [Accident 20010902036299A](https://openairdocs.org/incident/20010902036299A), Sep 2, 2001: N24KJ, Willow, AK, No damage. (-23) On September 01, 2001, at about 1525 Alaska daylight time, a float-equipped experimental/homebuilt jacobs KE-1-A airplane, N24KJ, sustained substantial…
- [Accident 20010830026369A](https://openairdocs.org/incident/20010830026369A), Aug 30, 2001: Beech A23 (N3516R), Stevens Point, WI, No damage. (-23) On August 30, 2001 at 1814 CDT, a Beechcraft A-23, N3516R, operated by jay f. tillman, lost control and impacted the terrain during takeoff on runway 30…
- [Accident 20010819023979A](https://openairdocs.org/incident/20010819023979A), Aug 19, 2001: Beech A23 (N8869M), Blairsville, GA, No damage. (-23) Pilot loaded aircraft with himself and 2 passengers, full load of fuel, after takeoff at climb, aircraft impacted trees at an approximate altitude of 40…
- [Incident 20010430016319I](https://openairdocs.org/incident/20010430016319I), Apr 30, 2001: Beech A23A (N701DW), Hen Holstein, WI, Minor damage. (-23) On 4-30-01, at approximately 1815 CDT, Mr. Richard white, a private pilot was receiving a flight review from Mr. Barrett WA. Paasch, a flight instructor.…
- [Accident 20001006039019A](https://openairdocs.org/incident/20001006039019A), Oct 6, 2000: Beech A23 (N8895M), Lincoln Park, NJ, No damage. (-23) Miss doreen degan the new owner of the Beechcraft was getting some taxi instruction from her boyfriend Mr. Squillante a commercial rated pilot, when a…
- [Incident 20000927030389I](https://openairdocs.org/incident/20000927030389I), Sep 27, 2000: Beech A23A (N6960Q), Georgetown, CA, Minor damage. (-23)Student pilot was practicing short field landings in his personnal aircraft at Georgetown Airport, CA, on September 29, 2000. Completed a hard landing and…
- [Accident 20000826009249A](https://openairdocs.org/incident/20000826009249A), Aug 26, 2000: Cessna 411 (N411TK), Boise, ID, No damage. (-23) The pilot was cleared to land on runway 28L at boi and acknowledged this to the boi ATCT. The aircraft was on final approach when witnesses stated that…

All 149: https://openairdocs.org/engine/continental-io-346-series/incidents.md

## STCs that may be installed (OpenAirDocs) (19)

Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC. Lists IO-346-A
- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd. Lists IO-346-A
- [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc. Lists IO-346-A
- [STC SE03232CH](https://openairdocs.org/stc/SE03232CH): Installation of Engine Preheat Kit p/n TA2925-1 for 115 volt application. Hartzell Propeller Inc. Lists IO-346-A
- [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc. Lists IO-346-A
- [STC SE04599CH](https://openairdocs.org/stc/SE04599CH): To allow the use of UL-94 (minimum) grade aviation fuel meeting ASTM D7547. Swift Fuels LLC. Lists IO-346-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 IO-346-A
- [STC SE2340SW](https://openairdocs.org/stc/SE2340SW): Installation of modified cylinder assemblies, barrels, piston, and repaired crankcases. Continental Motors, Inc. Lists IO-346-A
- [STC SE34WE](https://openairdocs.org/stc/SE34WE): Installation of Electro-Coatings, Inc., piston rings on Continental pistons. Continental Motors, Inc. Lists IO-346-A
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists IO-346-A
- [STC SE09846SC](https://openairdocs.org/stc/SE09846SC): Installation of S539800M30 starter adapter springs. Aircraft Specialties Services Inc. Lists IO-346-A
- [STC SE1780NM](https://openairdocs.org/stc/SE1780NM): Installation of Precise Flight standby vacuum system (SVS III). Precise Flight Inc. Lists IO-346-A
- [STC SE01628NY](https://openairdocs.org/stc/SE01628NY): Modification of starter adapter by substitution or rework of accessory drive parts. Canadian Aero Manufacturing. Lists IO-346-A
- [STC SE09513SC](https://openairdocs.org/stc/SE09513SC): Installation and usage of Exxon 20W50 Multigrade aircraft engine oil conforming to Exxon Oil Formulation WS-3013. Exxon Company USA. Lists IO-346-A
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists IO-346-A
- [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 IO-346-A
- [STC SE80NE](https://openairdocs.org/stc/SE80NE): Installation and usage of Bel-Ray synthetic aviation oil, Bel-Ray Aero 1, (nonsupercharged), horizontally opposed direct drive, aircraft engines of 350 hp. or less. Bel-Ray Company, Inc. Lists IO-346-A
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists IO-346-A
- [STC SE44WE](https://openairdocs.org/stc/SE44WE): Use of Kling Aviation Oil, Specifications KL-100, KL-200 and KL-300 in Continental and Lycoming engines. Kling Oil Company. Lists IO-346-A

---
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