# Continental IO-520-BB - Type: Engine model (FAA registry) - Registry code: 17231 - Manufacturer (registry): CONT MOTOR - Model: IO-520-BB - Engine type: Reciprocating - Power: 285 hp - Data sheet: [TCDS E5CE](https://openairdocs.org/tcds/E5CE) (OpenAirDocs) - Holder: Continental Aerospace Technologies, Inc. - Installed in: 44 registered aircraft - Page: https://openairdocs.org/engine/continental-io-520-bb Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2023-17-04](https://openairdocs.org/ad/2023-17-04): Reciprocating Engine Oil System · F & M Enterprises' Model C6LC, C6LC-S or C6LC-L oil filter… (Stratus Tool Technologies STC SE09356SC or 2 others). Effective Oct 26, 2023 - [AD 2023-09-09](https://openairdocs.org/ad/2023-09-09): Exhaust Turbine System (Recip) · Aerostar PA-60-600 (Aerostar 600), PA-60-601 (Aerostar 601), PA-60-601P (Aerostar 601P) and 292 more. Effective Jul 17, 2023 - [AD 2023-05-16](https://openairdocs.org/ad/2023-05-16): Reciprocating Engine Power Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 147 more. Effective Mar 15, 2023 - [AD 2023-02-12](https://openairdocs.org/ad/2023-02-12): Engine Air Intake System · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 127 more. Effective Feb 17, 2023 - [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 2016-16-12](https://openairdocs.org/ad/2016-16-12): Cylinder assemblies · Continental Motors LTSIO-520-AE, TSIO-520-A, TSIO-520-AE and 89 more. Effective Sep 15, 2016 - [AD 2014-05-29](https://openairdocs.org/ad/2014-05-29): SAP replacement parts manufacturer approval (PMA) investment cast cylinder assemblies · Continental Motors TSIO-520-A, TSIO-520-AE, TSIO-520-AF and 55 more. Effective Apr 25, 2014 - [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 2009-19-07](https://openairdocs.org/ad/2009-19-07): EQ3 cylinders · Continental Motors IO-470-C, IO-470-D, IO-470-E and 72 more. Effective Oct 7, 2009 - [AD 2007-04-19 R1](https://openairdocs.org/ad/2007-04-19-R1): SAP cylinder assemblies · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 314 more. Effective May 7, 2007 - [AD 2004-08-10](https://openairdocs.org/ad/2004-08-10): Serial-numbered (SN) cylinders · Modify Teledyne Continental TSIO-520-NB engine (RAM Aircraft Limited Partnership STC SE09104SC or 4 others). Effective May 5, 2004 - [AD 2000-23-21](https://openairdocs.org/ad/2000-23-21): Crankshaft · Continental Motors IO-360-A, IO-360-AB, IO-360-B and 164 more. Effective Dec 12, 2000 - [AD 99-19-01](https://openairdocs.org/ad/99-19-01): No. 2 and No. 5 Crankshaft Inspections · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 127 more. Effective Sep 30, 1999 - [AD 97-26-17](https://openairdocs.org/ad/97-26-17): Crankshaft · Continental Motors IO-360-A, IO-360-AB, IO-360-B and 90 more. Effective Jan 23, 1998 - [AD 96-12-22](https://openairdocs.org/ad/96-12-22): Full Flow Engine Oil Adapter · Bellanca CH-300 Pacemaker, 120, 140 and 361 more. Effective Jul 31, 1996 - [AD 93-16-15](https://openairdocs.org/ad/93-16-15): Fuel Pump Drive Shaft · Continental Motors IO-520-B, IO-520-BA, IO-520-BB and 27 more. Effective Dec 14, 1993 - [AD 93-08-17](https://openairdocs.org/ad/93-08-17): Oil Pick-Up Tube · Continental Motors IO-470-A, IO-470-C, IO-470-D and 104 more. Effective Aug 23, 1993 - [AD 93-10-02](https://openairdocs.org/ad/93-10-02): Missing Cylinder Valve Retainer Key · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 180 more. Effective Aug 12, 1993 - [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 88-17-03](https://openairdocs.org/ad/88-17-03): Starter Adapter Shaftgear Assembly · Continental Motors IO-520-BA, IO-520-BB, IO-550-B and 4 more. Effective Aug 10, 1988 - [AD 88-03-06](https://openairdocs.org/ad/88-03-06): Oil Filter · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 155 more. Effective Apr 15, 1988 - [AD 86-13-04 R3](https://openairdocs.org/ad/86-13-04-R3): Cylinder Assemblies · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 44 more. Effective Feb 24, 1988 - [AD 87-14-02](https://openairdocs.org/ad/87-14-02): Starter Adapter Shaftgear · Continental Motors IO-520-BA, IO-520-BB, IO-550-B and 4 more. Effective Oct 5, 1987 - [AD 81-24-06](https://openairdocs.org/ad/81-24-06): Engine Driven Fuel Pumps · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 51 more. Effective Nov 23, 1981 - [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 80-01-04](https://openairdocs.org/ad/80-01-04): Cylinder Holddown Flange Assemblies · Continental Motors IO-520-A, IO-520-B, IO-520-BA and 44 more. Effective Jan 25, 1980 - [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 2023-04-08](https://openairdocs.org/ad/2023-04-08) (historical): Reciprocating Engine Power Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 141 more. Effective Feb 23, 2023 - [AD 2022-04-04](https://openairdocs.org/ad/2022-04-04) (historical): Reciprocating Engine Oil System · F & M Enterprises' Model C6LC, C6LC-S or C6LC-L oil filter… (Stratus Tool Technologies STC SE09356SC or 2 others). Effective Mar 29, 2022 - [AD 2009-24-52](https://openairdocs.org/ad/2009-24-52) (historical): Hydraulic lifters · Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 192 more - [AD 2009-24-51](https://openairdocs.org/ad/2009-24-51) (historical): Hydraulic lifters · Teledyne Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 156 more - [AD 2009-16-03](https://openairdocs.org/ad/2009-16-03) (historical): Cylinder assemblies · Continental Motors IO-520-A, IO-520-B, IO-520-BA and 55 more. Effective Sep 9, 2009 - [AD 2000-08-51](https://openairdocs.org/ad/2000-08-51) (historical): Crankshaft · Teledyne Continental Motors IO-360-A, IO-360-AB, IO-360-B and 158 more - [AD 99-09-17](https://openairdocs.org/ad/99-09-17) (historical): Crankshaft · Teledyne Continental Motors IO-470-A, IO-470-C, IO-470-D and 114 more ## Information bulletins (advisory) (11) - [SAIB NE-20-05](https://openairdocs.org/saib/NE-20-05): POWERPLANT - Engine Camshaft Gear Tooth Fracture. Issued Apr 6, 2020 - [SAIB NE-18-16](https://openairdocs.org/saib/NE-18-16): POWERPLANT Alternator Drive Coupling. Issued Jun 20, 2018 - [SAIB NE-17-11](https://openairdocs.org/saib/NE-17-11): POWERPLANT Engine damage as a result of kickback. Issued May 10, 2017 - [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 - [SAIB NE-10-09](https://openairdocs.org/saib/NE-10-09): Reciprocating Engine Power Section: Hydraulic Valve Lifters. Issued Nov 20, 2009 - [SAIB NE-10-07](https://openairdocs.org/saib/NE-10-07): Reciprocating Engine Cylinder: Identification Information for Superior Air Parts, PMA Cylinder Heads for Teledyne Continental Motors (TCM) IO-520, TSIO-520,and IO-550 Series Engines.. Issued Nov 2, 2009 - [SAIB NE-09-08](https://openairdocs.org/saib/NE-09-08): Reciprocating Engine Cylinder Section. Issued Jan 30, 2009 - [SAIB NE-07-09R1](https://openairdocs.org/saib/NE-07-09R1): Periodic Inspections of ECi Cylinder Assemblies for Cracks in the Aluminum Head. Issued Mar 21, 2007 - [SAIB NE-02-41](https://openairdocs.org/saib/NE-02-41): . Issued Aug 8, 2002 ## Registered aircraft (44) - [N118NH](https://openairdocs.org/aircraft/N118NH): [Southern Aircraft Consultancy Inc Trustee](https://openairdocs.org/faa-owner/SOUTHERN%20AIRCRAFT%20CONSULTANCY%20INC%20TRUSTEE), [Casper, WY](https://openairdocs.org/faa-place/WY/Casper), built 1991, S/N CE-1612 - [N11ZT](https://openairdocs.org/aircraft/N11ZT): [Qualitair LLC Trustee](https://openairdocs.org/faa-owner/QUALITAIR%20LLC%20TRUSTEE), Michelstadt, built 1987, S/N CE-1108 - [N123RK](https://openairdocs.org/aircraft/N123RK): [Plane Fun Inc Tr Trustee](https://openairdocs.org/faa-owner/PLANE%20FUN%20INC%20TR%20TRUSTEE), [Snellville, GA](https://openairdocs.org/faa-place/GA/Snellville), built 1980, S/N CE909 - [N124RM](https://openairdocs.org/aircraft/N124RM): [Golden Dreams LLC](https://openairdocs.org/faa-owner/GOLDEN%20DREAMS%20LLC), [Missoula, MT](https://openairdocs.org/faa-place/MT/Missoula), built 1946, S/N NAV-4-136 - [N137CM](https://openairdocs.org/aircraft/N137CM): [Cm Aviation Inc Trustee](https://openairdocs.org/faa-owner/CM%20AVIATION%20INC%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1984, S/N CE1054 - [N15549](https://openairdocs.org/aircraft/N15549): [Hall Patrick D](https://openairdocs.org/faa-owner/HALL%20PATRICK%20D), [Lakeway, TX](https://openairdocs.org/faa-place/TX/Lakeway), built 1990, S/N CE1471 - [N1947U](https://openairdocs.org/aircraft/N1947U): [Tri Pacer Air LLC](https://openairdocs.org/faa-owner/TRI%20PACER%20AIR%20LLC), [Pennington, NJ](https://openairdocs.org/faa-place/NJ/Pennington), built 1946, S/N NAV-4-394 - [N224AB](https://openairdocs.org/aircraft/N224AB): [Skin LLC](https://openairdocs.org/faa-owner/SKIN%20LLC), [Charlotte, NC](https://openairdocs.org/faa-place/NC/Charlotte), built 1992, S/N CE-1680 - [N234AB](https://openairdocs.org/aircraft/N234AB): [Bachteal Paul Shear](https://openairdocs.org/faa-owner/BACHTEAL%20PAUL%20SHEAR), [Sebastopol, CA](https://openairdocs.org/faa-place/CA/Sebastopol), built 1991, S/N CE-1562 - [N259JP](https://openairdocs.org/aircraft/N259JP): [Kennedy Wallace III](https://openairdocs.org/faa-owner/KENNEDY%20WALLACE%20III), [Beaufort, NC](https://openairdocs.org/faa-place/NC/Beaufort), built 1976, S/N NAV42559 - [N26RT](https://openairdocs.org/aircraft/N26RT): [International Air Services Inc Trustee](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIR%20SERVICES%20INC%20TRUSTEE), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), built 1988, S/N CE-1292 - [N2854P](https://openairdocs.org/aircraft/N2854P): [Hakari Wesley Jon](https://openairdocs.org/faa-owner/HAKARI%20WESLEY%20JON), [Sioux Falls, SD](https://openairdocs.org/faa-place/SD/Sioux%20Falls), built 1979, S/N CE-858 - [N3115A](https://openairdocs.org/aircraft/N3115A): [Suits Jerry L](https://openairdocs.org/faa-owner/SUITS%20JERRY%20L), [Tulsa, OK](https://openairdocs.org/faa-place/OK/Tulsa), built 2014, S/N CE-1194 - [N335HP](https://openairdocs.org/aircraft/N335HP): [Olympus Leasing LLC](https://openairdocs.org/faa-owner/OLYMPUS%20LEASING%20LLC), [Bremerton, WA](https://openairdocs.org/faa-place/WA/Bremerton), built 1992, S/N CE1663 - [N3364B](https://openairdocs.org/aircraft/N3364B): [Dilley Darrel L](https://openairdocs.org/faa-owner/DILLEY%20DARREL%20L), [La Salle, CO](https://openairdocs.org/faa-place/CO/La%20Salle), built 1977, S/N CE-734 - [N338MG](https://openairdocs.org/aircraft/N338MG): [Ejdeha LLC](https://openairdocs.org/faa-owner/EJDEHA%20LLC), [Boston, MA](https://openairdocs.org/faa-place/MA/Boston), built 1989, S/N CE-1325 - [N35TJ](https://openairdocs.org/aircraft/N35TJ): [Beech D9462 LLC](https://openairdocs.org/faa-owner/BEECH%20D9462%20LLC), [Perry, OH](https://openairdocs.org/faa-place/OH/Perry), built 1973, S/N D9462 - [N366Z](https://openairdocs.org/aircraft/N366Z): [Mendel Carl](https://openairdocs.org/faa-owner/MENDEL%20CARL), [Port Charlotte, FL](https://openairdocs.org/faa-place/FL/Port%20Charlotte), built 1975, S/N E-769 - [N400LL](https://openairdocs.org/aircraft/N400LL): [Mentor Flyers Inc](https://openairdocs.org/faa-owner/MENTOR%20FLYERS%20INC), [Paragon, IN](https://openairdocs.org/faa-place/IN/Paragon), built 1957, S/N BG-400 - [N423JK](https://openairdocs.org/aircraft/N423JK): [Kraft John](https://openairdocs.org/faa-owner/KRAFT%20JOHN), [Lake View, IA](https://openairdocs.org/faa-place/IA/Lake%20View), built 1982, S/N E1951 - [N4651B](https://openairdocs.org/aircraft/N4651B): [Glenbear LLC](https://openairdocs.org/faa-owner/GLENBEAR%20LLC), [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell), built 1970, S/N D-9157 - [N48KU](https://openairdocs.org/aircraft/N48KU): [Wildcat Aviation LLC](https://openairdocs.org/faa-owner/WILDCAT%20AVIATION%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1979, S/N D-10303 - [N48WW](https://openairdocs.org/aircraft/N48WW): [Supercub Aviation LLC](https://openairdocs.org/faa-owner/SUPERCUB%20AVIATION%20LLC), [College Station, TX](https://openairdocs.org/faa-place/TX/College%20Station), built 1976, S/N E-940 - [N530C](https://openairdocs.org/aircraft/N530C): [Continental Title Trust LLC Trustee](https://openairdocs.org/faa-owner/CONTINENTAL%20TITLE%20TRUST%20LLC%20TRUSTEE), [Wichita, KS](https://openairdocs.org/faa-place/KS/Wichita), built 1976, S/N D-9927 - [N535BE](https://openairdocs.org/aircraft/N535BE): [Valiair Lc Trustee](https://openairdocs.org/faa-owner/VALIAIR%20LC%20TRUSTEE), [Casper, WY](https://openairdocs.org/faa-place/WY/Casper), built 1970, S/N D-9170 - [N536WG](https://openairdocs.org/aircraft/N536WG): [Advantage Aviation Inc](https://openairdocs.org/faa-owner/ADVANTAGE%20AVIATION%20INC), [Palo Alto, CA](https://openairdocs.org/faa-place/CA/Palo%20Alto), built 1990, S/N CE-1446 - [N6038Q](https://openairdocs.org/aircraft/N6038Q): [Miller Larry L](https://openairdocs.org/faa-owner/MILLER%20LARRY%20L), [Orlando, FL](https://openairdocs.org/faa-place/FL/Orlando), built 1979, S/N CE-852 - [N6123X](https://openairdocs.org/aircraft/N6123X): [Buffalo Aviators LLC](https://openairdocs.org/faa-owner/BUFFALO%20AVIATORS%20LLC), [Denver, CO](https://openairdocs.org/faa-place/CO/Denver), built 1981, S/N D-10385 - [N61LP](https://openairdocs.org/aircraft/N61LP): [Rossetter Eric](https://openairdocs.org/faa-owner/ROSSETTER%20ERIC), [Lafayette, CA](https://openairdocs.org/faa-place/CA/Lafayette), built 1981, S/N E-1807 - [N627AJ](https://openairdocs.org/aircraft/N627AJ): [Jorfam Properties LLC](https://openairdocs.org/faa-owner/JORFAM%20PROPERTIES%20LLC), [Dripping Springs, TX](https://openairdocs.org/faa-place/TX/Dripping%20Springs), built 1974, S/N D-9583 - [N6653D](https://openairdocs.org/aircraft/N6653D): [Williams Lee V](https://openairdocs.org/faa-owner/WILLIAMS%20LEE%20V), [Dallas, TX](https://openairdocs.org/faa-place/TX/Dallas), S/N D-10256 - [N66648](https://openairdocs.org/aircraft/N66648): [Sky West Aviation Inc Trustee](https://openairdocs.org/faa-owner/SKY%20WEST%20AVIATION%20INC%20TRUSTEE), [Albuquerque, NM](https://openairdocs.org/faa-place/NM/Albuquerque), built 1979, S/N D10289 - [N66UT](https://openairdocs.org/aircraft/N66UT): [Flight Level Engineering LLC](https://openairdocs.org/faa-owner/FLIGHT%20LEVEL%20ENGINEERING%20LLC), [Vineyard, UT](https://openairdocs.org/faa-place/UT/Vineyard), built 1950, S/N NAV-4-2013 - [N67607](https://openairdocs.org/aircraft/N67607): [Bertrand William DBA](https://openairdocs.org/faa-owner/BERTRAND%20WILLIAM%20DBA), [Milford, MI](https://openairdocs.org/faa-place/MI/Milford), built 1980, S/N E-1750 - [N6878L](https://openairdocs.org/aircraft/N6878L): [Murawski Todd](https://openairdocs.org/faa-owner/MURAWSKI%20TODD), [Port Austin, MI](https://openairdocs.org/faa-place/MI/Port%20Austin), built 1988, S/N CE1279 - [N69XG](https://openairdocs.org/aircraft/N69XG): [Hahn Curtis D](https://openairdocs.org/faa-owner/HAHN%20CURTIS%20D), [Saint George, UT](https://openairdocs.org/faa-place/UT/Saint%20George), built 1976, S/N D-9859 - [N70PG](https://openairdocs.org/aircraft/N70PG): [American Skyteam LLC](https://openairdocs.org/faa-owner/AMERICAN%20SKYTEAM%20LLC), [Floral Park, NY](https://openairdocs.org/faa-place/NY/Floral%20Park), built 1991, S/N CE-1635 - [N7229X](https://openairdocs.org/aircraft/N7229X): [H&H Aviation Inc](https://openairdocs.org/faa-owner/H%26H%20AVIATION%20INC), [Port Orange, FL](https://openairdocs.org/faa-place/FL/Port%20Orange), built 1985, S/N CE-1063 - [N775VC](https://openairdocs.org/aircraft/N775VC): [Amaria Marzban Keki](https://openairdocs.org/faa-owner/AMARIA%20MARZBAN%20KEKI), [Riverside, CA](https://openairdocs.org/faa-place/CA/Riverside), built 1992, S/N CE-1704 - [N778FY](https://openairdocs.org/aircraft/N778FY): [Qualitair LLC Trustee](https://openairdocs.org/faa-owner/QUALITAIR%20LLC%20TRUSTEE), Michelstadt, built 1987, S/N CE-1148 - [N882CC](https://openairdocs.org/aircraft/N882CC): [Sky West Aviation Inc Trustee](https://openairdocs.org/faa-owner/SKY%20WEST%20AVIATION%20INC%20TRUSTEE), [Albuquerque, NM](https://openairdocs.org/faa-place/NM/Albuquerque), built 1989, S/N CE1345 - [N888HP](https://openairdocs.org/aircraft/N888HP): [Green Mountain State Aviation LLC](https://openairdocs.org/faa-owner/GREEN%20MOUNTAIN%20STATE%20AVIATION%20LLC), [Cornwall, VT](https://openairdocs.org/faa-place/VT/Cornwall), built 1988, S/N CE-1302 - [N927JB](https://openairdocs.org/aircraft/N927JB): [Airgroup Express LLC](https://openairdocs.org/faa-owner/AIRGROUP%20EXPRESS%20LLC), [Santa Rosa, CA](https://openairdocs.org/faa-place/CA/Santa%20Rosa), built 1980, S/N D-10345 - [N956TD](https://openairdocs.org/aircraft/N956TD): [Donohue Thomas](https://openairdocs.org/faa-owner/DONOHUE%20THOMAS), [Carmel, NY](https://openairdocs.org/faa-place/NY/Carmel), built 1959, S/N NAV41838 ## NTSB investigations (3) 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 CEN20LA421](https://openairdocs.org/ntsb/CEN20LA421), Sep 28, 2020: Beech A36 (N104RK), Lago Vista, TX, substantial damage. Probable cause: The pilot’s mismanagement of the fuel system which resulted in fuel starvation and a total loss of engine power. Contributing to the accident was the pilot’s failure to maintain airspeed which… - [NTSB ERA17FA115](https://openairdocs.org/ntsb/ERA17FA115), Feb 26, 2017: Ryan Navion (N4529K), Westhampton Beach, NY, destroyed, 2 fatal. Probable cause: The flight instructor's exceedance of the critical angle of attack during a go-around, which resulted in an aerodynamic stall/spin. Contributing to the accident was the flight instructor's failure to… - [NTSB WPR16LA028](https://openairdocs.org/ntsb/WPR16LA028), Nov 13, 2015: Beech A36 (N78CR), Lancaster, CA, substantial damage. Probable cause: The flight instructor's failure to comply with published instrument approach procedures during an instrument approach in dark night, visual meteorological conditions, which resulted in impact with… ## FAA accident and incident reports (7) 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 20231119021669I](https://openairdocs.org/incident/20231119021669I), Nov 19, 2023: Ryan NAVION (N956TD), Lagrangeville, NY, Minor damage. Pilot was repositioning from one parking spot to another parking spot. Added power during turn and momentarily lost control. Right wing impacted parked car. - [Accident 20200928018799A](https://openairdocs.org/incident/20200928018799A), Sep 28, 2020: Beech A36 (N104RK), Largo Vista, TX, Substantial damage. Aircraft descended to pattern and entered a 45 degree to long final for 33. Pilot decided approach was not stable enough with gusts, crosswind, and… - [Incident 20180301001299I](https://openairdocs.org/incident/20180301001299I), Mar 1, 2018: Beech F33A (N6038Q), Umatilla, FL, Minor damage. N6038Q landed gear up at X23. Gear up landing (2) sob no injuries. No ATC services provided,no wx brief,no flight plan. - [Accident 20170226018819A](https://openairdocs.org/incident/20170226018819A), Feb 26, 2017: Ryan NAVION F (N4529K), Westhampton Bea, NY, Destroyed, 2 fatal. On 02/26/2017 aircraft N4529K a Ryan navion model NA-145F aircraft was practicing touch and go landings on runway 33 at fok (Gabreski airport). Wind at this… - [Accident 20151112020669A](https://openairdocs.org/incident/20151112020669A), Nov 12, 2015: Beech A36 (N78CR), Lancaster, CA, Substantial damage. On 11/12/2015 about 19:30 PST N78CR was IFR enroute from bfl to wjf. At 11,000 feet altitude, N78CR requested the RNAV approach to rwy 6 at wjf from joshua… - [Incident 20150320005319I](https://openairdocs.org/incident/20150320005319I), Mar 20, 2015: Beech A36 (N78CR), Oxnard, CA, Minor damage. N78CR landed at koxr wheels up on runway 25 on 3/20/15 at 1335 local time. Inspection of aircraft revealed damage to both flaps, nose landing gear doors,… - [Incident 19960109000949I](https://openairdocs.org/incident/19960109000949I), Jan 9, 1996: Beech F33A (N8067R), Las Vegas, NV, Minor damage. Narrative: N8067R, Beech BE36, returned to Las Vegas, Nevada mccarran airport at 090014 PST with an electrical failure. On landing rollout the landing gear… ## Service difficulty reports (388, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 2025FA0000662](https://openairdocs.org/sdr/2025FA0000662), Sep 24, 2025: INTAKE VALVE. DAMAGED. THE INTAKE VALVE HAS MATERIAL MISSING IN I LOCATIONS AROUND THE PERIMETER OF THE VALVE HEAD SEAT AREA, LT APPEARS TO BE VALVE FAILURE AND NOT FOD, (OTHER INFO F - [SDR 2025FA0000349](https://openairdocs.org/sdr/2025FA0000349), May 9, 2025: RETAINING CLIP. WORN. COWLING - RIGHT SIDE - HOLD OPEN LATCH/LEVER SLIPPED LOOSE IN FLIGHT AND FELL DOWN ON BATTERY MASTER RELAY CAUSING A SHORT AND BURNED OUT THE DIODES USED TO APP - [SDR CA190823007](https://openairdocs.org/sdr/CA190823007), Jun 10, 2019: CASE HALF. CRACKED. (CAN) OWNER OF AIRCRAFT REPORTED AN OIL LEAK. UPON INSPECTING FOR THE OIL LEAK A CRACK WAS FOUND. CRACK WAS APPROXIMATELY 6 INCH LONG IN THE CASE HALF ABOVE THE - [SDR 2019FA0000149](https://openairdocs.org/sdr/2019FA0000149), May 13, 2019: CABLE ASSY. CORRODED. ON AN ANNUAL INSPECTION OF THE AIRCRAFT, FOUND RIGHT AILERON CABLE BROKEN AT SWAGED PORTION ATTACHED TO TURNBUCKLE. THE CABLE WAS HELD TOGETHER ONLY BY THE SAFE - [SDR 2019FA0000033](https://openairdocs.org/sdr/2019FA0000033), Jan 5, 2019: CONTROL CABLE. BROKEN. DURING ANNUAL INSPECTION, FOUND RIGHT AILERON CABLE BROKEN AT SWAGED END BETWEEN SAFETY WIRE HOLE AND THREADED END. SAFETY WIRE WAS HOLDING IT TOGETHER. - [SDR 2018FA0000413](https://openairdocs.org/sdr/2018FA0000413), Oct 9, 2018: DISPLAY. FAILED. THE REMOTE AUXILIARY DISPLAY WENT INOPERATIVE DURING TAKE-OFF. - [SDR 2018FA0000036](https://openairdocs.org/sdr/2018FA0000036), Jan 12, 2018: CIRCUIT BREAKER. FAILED. PILOT REPORTED LANDING LIGHT INOP. TROUBLESHOOTING DISCOVERED CIRCUIT BREAKER HAD FAILED. - [SDR 2018FA0000037](https://openairdocs.org/sdr/2018FA0000037), Jan 12, 2018: CIRCUIT BREAKER. FAILED. PILOT REPORTED THE TAXI LIGHT INOPERATIVE. TROUBLESHOOTING DISCOVERED THE CIRCUIT BREAKER HAD FAILED. - [SDR 2017FA0000651](https://openairdocs.org/sdr/2017FA0000651), Dec 18, 2017: CIRCUIT BREAKER. FAILED. PILOT REPORTED BEACON ONLY WORKS WHEN SWITCH ON AND OFF SEVERAL TIMES. CIRCUIT BREAKER WAS REPLACED, OPS CHECK NORMAL. - [SDR 2017FA0000653](https://openairdocs.org/sdr/2017FA0000653), Dec 18, 2017: CIRCUIT BREAKER. FAILED. PILOT REPORTED LANDING LIGHT INOP. TROUBLESHOOTING DISCOVERED CIRCUIT BREAKER HAD FAILED. - [SDR T22R201607260001](https://openairdocs.org/sdr/T22R201607260001), Jul 26, 2016: CRANKSHAFT. MISMANUFACTURED. CRANKSHAFT NR 1 BOTTOM BLADE BUSHING, LOCATED APPROXIMATELY .100 OFFSET ON ITS HORIZONTAL PLAIN WHICH ALLOWED COUNTERWEIGHT WHEN ASSEMBLED TO CRANKSHAFT BLADE T - [SDR 2016FA0000194](https://openairdocs.org/sdr/2016FA0000194), Apr 26, 2016: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE NAVIGATION LIGHTS WERE INOPERATIVE. THE TECH TROUBLESHOT THE SYS AND DISCOVERED THE NAVIGATION LIGHTS FAILED. THE TECH REPLACED THE CIRC - [SDR 2016FA0000146](https://openairdocs.org/sdr/2016FA0000146), Mar 29, 2016: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE STROBE LIGHT WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE STROBE LIGHT FAILED. THE TECH REPLACED THE CIRCUIT BREA - [SDR VJ3R2016FA0000079](https://openairdocs.org/sdr/VJ3R2016FA0000079), Feb 9, 2016: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE LANDING LIGHT WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE LANDING LIGHT CIRCUIT BREAKER FAILED. THE TECH REPLACE - [SDR VJ3S2016FA0000043](https://openairdocs.org/sdr/VJ3S2016FA0000043), Jan 29, 2016: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE ANTI-COLLISION LIGHT WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYS AND DISCOVERED THE ANTI-COLLISION LIGHT FAILED. THE TECH REPLACED THE - [SDR VJ3S2016FA0000018](https://openairdocs.org/sdr/VJ3S2016FA0000018), Dec 16, 2015: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE BEACON LIGHT WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE BEACON LIGHT FAILED. THE TECH REPLACED THE CIRCUIT BREA - [SDR VJ3S2016FA0000017](https://openairdocs.org/sdr/VJ3S2016FA0000017), Dec 15, 2015: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE ALTERNATOR WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE ALTERNATOR CIRCUIT BREAKER SWITCH WAS AT FAULT. THE TECH - [SDR VJ3R2015FA0000623](https://openairdocs.org/sdr/VJ3R2015FA0000623), Dec 4, 2015: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE ALTERNATOR WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE ALTERNATOR CIRCUIT BREAKER SWITCH FAILED. THE TECH REPLAC - [SDR MAMR2015121600654](https://openairdocs.org/sdr/MAMR2015121600654), Dec 4, 2015: HOUSING. DAMAGED. TURBOCHARGER RECEIVED IN FOR INSPECTION, FOUND THE TURNINE HOUSING HAD DEVELOPED A GROWTH OR DEFORMITY IN THE CASTING. THIS DECREASED THE CLEARANCE BETWEEN THE - [SDR 2015FA0000606](https://openairdocs.org/sdr/2015FA0000606), Nov 3, 2015: HOUSING. DEFORMED. TURBOCHARGER RECEIVED IN FOR INSPECTION. FOUND THE TURBINE HOUSING HAD DEVELOPED A GROWTH OR DEFORMITY IN THE CASTING. THIS DECREASED THE CLEARANCE BETWEEN THE - [SDR 2015FA0000281](https://openairdocs.org/sdr/2015FA0000281), Jun 22, 2015: THROTTLE ARM. DISCONNECTED. PRACTICING AN INSTRUMENT APPROACH INTO AIRPORT. PILOT FLYING WAS SLIGHTLY LOW ON A NON-PRECISION INSTRUMENT APPROACH. POWER SETTING WAS 15" MAP. APPLICATION OF - [SDR VJ3R2015061000267](https://openairdocs.org/sdr/VJ3R2015061000267), Jun 10, 2015: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE ALTERNATOR OUT LIGHT TURNED ON. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE ALTERNATOR SWITCH FAILED. THE TECH REPLACED THE CIRCU - [SDR LS6R2015FA0000195](https://openairdocs.org/sdr/LS6R2015FA0000195), May 12, 2015: TUBE. DAMAGED. ENGINE RAN FINE ONE DAY, BUT NEXT DAY ALTHOUGH IT WOULD START, IT WOULD DIE AFTER JUST A FEW SECONDS. FOUND IT WOULD CONTINUE TO RUN ONLY IF BOOST PUMP WAS LEFT - [SDR 2015FA0000154](https://openairdocs.org/sdr/2015FA0000154), Apr 23, 2015: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE TAXI LIGHT WAS INOP. THE TECHNICIAN TROUBLESHOT THE SYSTEM AND DISCOVERED THE TAXI LIGHT FAILED. THE TECHNICIAN REPLACED THE CIRCUIT BRE - [SDR 2015FA0000155](https://openairdocs.org/sdr/2015FA0000155), Apr 3, 2015: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE LANDING LIGHT WAS INOP. THE TECHNICIAN TROUBLESHOT THE SYSTEM AND DISCOVERED THE LANDING LIGHT FAILED. THE TECHNICIAN REPLACED THE CIRCU - [SDR VJ3R2015FA0000107](https://openairdocs.org/sdr/VJ3R2015FA0000107), Mar 24, 2015: FUEL CONTROL. MALFUNCTIONED. ON THE RUNWAY, THE ENGINE QUIT WHEN THE THROTTLE WAS ADVANCED. THE ENGINE WOULD NOT MAINTAIN A MIXTURE SETTING. - [SDR 2015FA0000156](https://openairdocs.org/sdr/2015FA0000156), Mar 11, 2015: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE LANDING LIGHT WAS INOP. THE TECHNICIAN TROUBLESHOT THE SYSTEM AND DISCOVERED THE LANDING LIGHT FAILED. THE TECHNICIAN REPLACED THE CIRCU - [SDR VJ3R2015FA0000035](https://openairdocs.org/sdr/VJ3R2015FA0000035), Jan 27, 2015: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE TAXI LIGHT WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE TAXI LIGHT FAILED. THE TECH REPLACED THE CIRCUIT BREAKER - [SDR VJ3R2015FA0000036](https://openairdocs.org/sdr/VJ3R2015FA0000036), Jan 27, 2015: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE LANDING LIGHT CIRCUIT BREAKER SWITCH WAS NOT STAYING IN THE "ON" POSITION. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE LANDING LI - [SDR 2015FA0000023](https://openairdocs.org/sdr/2015FA0000023), Jan 22, 2015: LOCK NUT. STRIPPED. SHORTLY AFTER TAKEOFF, HAD A REDUCTION IN FUEL FLOW, LANDED WITHOUT INCIDENT. UPON INSPECTION IT WAS NOTICED THAT THE RETAINING LOCKNUT FOR THE MIXTURE CONTROL - [SDR VJ3R2014FA0000692](https://openairdocs.org/sdr/VJ3R2014FA0000692), Dec 9, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE TAXI LIGHT WAS INOPERATIVE. TROUBLESHOT THE SYSTEM AND DISCOVERED THE TAXI LIGHT FAILED. REPLACED THE CIRCUIT BREAKER. NO CAUSE OR RECOM - [SDR 2014FA0000689](https://openairdocs.org/sdr/2014FA0000689), Dec 7, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE ALTERNATOR DID NOT WORK. AFTER TROUBLESHOOTING IT WAS FOUND THAT THE ALTERNATOR CIRCUIT BREAKER FAILED. INSTALLED NEW CIRCUIT BREAKER AN - [SDR VJ3R2014FA0000683](https://openairdocs.org/sdr/VJ3R2014FA0000683), Dec 1, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE TAXI LIGHT WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE TAXI LIGHT FAILED. THE TECH REPLACED THE CIRCUIT BREAKER. - [SDR VJ3R2014FA0000663](https://openairdocs.org/sdr/VJ3R2014FA0000663), Nov 18, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE LANDING LIGHT WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE LANDING LIGHT FAILED. THE TECH REPLACED THE CIRCUIT BR - [SDR VJ3R2014110500652](https://openairdocs.org/sdr/VJ3R2014110500652), Nov 5, 2014: CIRCUIT BREAKER. INTERMITTENT. PILOT REPORTED THAT THE LANDING LIGHT WAS INOPERATIVE. THE TECHNICIAN TROUBLESHOT THE SYSTEM AND DISCOVERED THE LANDING LIGHT WAS INTERMITTENTLY FAILING. THE TE - [SDR 2014FA0000649](https://openairdocs.org/sdr/2014FA0000649), Oct 31, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED BEACON LIGHT INOPERATIVE. TROUBLESHOT AND FOUND CIRCUIT BREAKER FAILED. REPLACED THE CIRCUIT BREAKER, OPS CHECKED GOOD. - [SDR 2014FA0000635](https://openairdocs.org/sdr/2014FA0000635), Oct 27, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE STROBE LIGHT WAS INOPERATIVE. TROUBLESHOT THE SYSTEM AND DISCOVERED THE STROBE LIGHT FAILED. REPLACED THE CIRCUIT BREAKER. - [SDR 2014FA0000633](https://openairdocs.org/sdr/2014FA0000633), Oct 24, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE NAVIGATION LIGHT WAS INOPERATIVE. TROUBLESHOT THE SYSTEM AND DISCOVERED THE NAVIGATION LIGHT FAILED. REPLACED THE CIRCUIT BREAKER. - [SDR 2014FA0000616](https://openairdocs.org/sdr/2014FA0000616), Oct 22, 2014: CIRCUIT BREAKER. FAILED. PILOTS REPORTED THAT THE STROBE LIGHTS WERE NOT WORKING. FOUND STROBE LIGHT CIRCUIT BREAKER FAULTY. REPLACED THE CIRCUIT BREAKER. - [SDR 2014FA0000617](https://openairdocs.org/sdr/2014FA0000617), Oct 22, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE ALTERNATOR CIRCUIT BREAKER WAS INOPERATIVE. TROUBLESHOT THE SYSTEM AND DISCOVERED THE ALTERNATOR CIRCUIT BREAKER FAILED. REPLACED THE CI - [SDR VJ3R2014101300601](https://openairdocs.org/sdr/VJ3R2014101300601), Oct 13, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE NAV LIGHT WAS INOPERATIVE. THE TECHNICIAN TROUBLESHOT THE SYSTEM AND DISCOVERED THE NAV LIGHT FAILED. THE TECHNICIAN REPLACED THE NAV LI - [SDR VJ3R2014101000596](https://openairdocs.org/sdr/VJ3R2014101000596), Oct 10, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THE LANDING LIGHT WAS INOPERATIVE. TROUBLESHOT AND FOUND THE LANDING LIGHT CIRCUIT BREAKER HOUSING BROKEN. REPLACED CIRCUIT BREAKER. - [SDR KC2R2014100249404](https://openairdocs.org/sdr/KC2R2014100249404), Oct 2, 2014: IMPULSE COUPLING. CRACKED. DURING A 500 HOUR INSPECTION OF MAGNETO, A CRACK WAS DISCOVERED IN THE IMPULSE COUPLING BASE PLATE. CRACK ORIGINATES AT THE ADVANCE STOP NOTCH OF THE FLYWEIGHT - [SDR VJ3S2014FA0000563](https://openairdocs.org/sdr/VJ3S2014FA0000563), Sep 25, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE STROBE LIGHT WAS INOPERATIVE. TROUBLESHOT THE SYSTEM AND DISCOVERED THE STROBE LIGHT FAILED. REPLACED THE CIRCUIT BREAKER. - [SDR VJ3S2014FA0000499](https://openairdocs.org/sdr/VJ3S2014FA0000499), Aug 22, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE LANDING LIGHT WAS INOPERATIVE. TROUBLESHOT THE SYSTEM AND DISCOVERED THE LANDING LIGHT FAILED. REPLACED THE CIRCUIT BREAKER. - [SDR 2014FA0000475](https://openairdocs.org/sdr/2014FA0000475), Aug 11, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED ALTERNATOR INOPERATIVE. DURING TROUBLESHOOTING, FOUND THE CIRCUIT BREAKER AT FAULT. INSTALLED NEW CIRCUIT BREAKER, OPS CHECKED GOOD. CIRCUIT BREA - [SDR 2014FA0000476](https://openairdocs.org/sdr/2014FA0000476), Aug 11, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE BEACON LIGHT WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE BEACON LIGHT FAILED. THE TECHNICIAN REPLACED THE CIRCUI - [SDR VJ3R2014FA0000462](https://openairdocs.org/sdr/VJ3R2014FA0000462), Aug 5, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THE NAVIGATION LIGHTS WERE NOT OPERATIONAL. AFTER TROUBLESHOOTING AIRCRAFT IT WAS FOUND THAT THE NAVIGATION LIGHTS CIRCUIT BREAKER WAS FAULTY. RE - [SDR 2014FA0000465](https://openairdocs.org/sdr/2014FA0000465), Aug 5, 2014: CIRCUIT BREAKER. FAILED. PILOT REPORTED THAT THE TAXI LIGHT WAS INOPERATIVE. THE TECH TROUBLESHOT THE SYSTEM AND DISCOVERED THE TAXI LIGHT FAILED. THE TECH REPLACED THE CIRCUIT BREAKER. - [SDR WS9R2014080400456](https://openairdocs.org/sdr/WS9R2014080400456), Jul 18, 2014: ARMATURE. DAMAGED. ENGINE WOULD NOT TURN OVER DURING START ATTEMPT. STARTER COULD BE HEARD TURNING. STARTER REMOVED AND DISASSEMBLED. ARMATURE COIL FOUND LOOSE AND SPINNING ON SPL All 388: https://openairdocs.org/engine/continental-io-520-bb/reports.md ## STCs that may be installed (OpenAirDocs) (53, first 50) 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 SE5583SW](https://openairdocs.org/stc/SE5583SW): Installation of fuel flow transducers (true-flow totalizer). Alcor LLC. Lists IO-520 Series - [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd - [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc - [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc - [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp - [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc - [STC SE09356SC](https://openairdocs.org/stc/SE09356SC): Install F & M Enterprises' Model C6LC, C6LC-S or C6LC-L oil filter adapter for a spin-on oil filter. Stratus Tool Technologies LLC - [STC SE09217SC](https://openairdocs.org/stc/SE09217SC): Installation of modified fuel injector nozzles. General Aviation Modifications Inc - [STC SE5785NM](https://openairdocs.org/stc/SE5785NM): Replacement of Teledyne Continental original camshaft with P/N 32122-2. B & B Aviation LLC - [STC SE70RM](https://openairdocs.org/stc/SE70RM): Installation of compressor bracket. Air Comm Corporation - [STC SE09637SC](https://openairdocs.org/stc/SE09637SC): Remove existing rocker arm assemblies and install modify rocker arm assemblies. General Aviation Modifications Inc - [STC SE8677SW](https://openairdocs.org/stc/SE8677SW): Installation of Garrett/Airesearch Model TE0659 turbocharger. Western Skyways, Inc - [STC SE1186SW](https://openairdocs.org/stc/SE1186SW): Regrooving of pistons P/N 631475 or P/N 632585. Continental Motors, Inc - [STC SE2340SW](https://openairdocs.org/stc/SE2340SW): Installation of modified cylinder assemblies, barrels, piston, and repaired crankcases. Continental Motors, Inc - [STC SE5820SW](https://openairdocs.org/stc/SE5820SW): Installation of Airmotive exhaust valve, P/N AEC-637781. Continental Motors, Inc. Lists IO-520 Series - [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc - [STC SE09979SC](https://openairdocs.org/stc/SE09979SC): Modification of Teledyne Continental Motors IO-520-B, IO-520-BA, or IO-520-BB engine to an Ultimate Engines IO-550-B/UE engine. General Aviation Modifications, Inc - [STC SE01791LA](https://openairdocs.org/stc/SE01791LA): Conversion of the subject engines to incorporate modification of crankcase, replacing crankshaft assembly, main bearings, rod assembly, piston, fuel system, and fuel system adjustment. COLORADO AIR PARTS - [STC SE10746SC-D](https://openairdocs.org/stc/SE10746SC-D): Conversion of Teledyne Continental Motors (TCM) models IO-520-B, -BA, -BB to RAM model IO-550-B-RA engine, or conversion of TCM models IO-520-C, -CB to RAM model IO-550-C-RA engine. RAM Aircraft Limited Partnership - [STC SE267CH](https://openairdocs.org/stc/SE267CH): Installation of Slick Model 6309 and 6313 magnetos. Champion Aerospace LLC - [STC SE7325SW-D](https://openairdocs.org/stc/SE7325SW-D): Installation of crankcase modifications. RAM Aircraft Limited Partnership - [STC SE09846SC](https://openairdocs.org/stc/SE09846SC): Installation of S539800M30 starter adapter springs. Aircraft Specialties Services Inc - [STC SE443GL](https://openairdocs.org/stc/SE443GL): Incorporation of a fuel flow transducer. Shadin Avionics - [STC SE02881AT](https://openairdocs.org/stc/SE02881AT): STC for the conversion of Teledyne Continental Motors (TCM) Models IO-520-B, -BA or -BB to AvPower Model IO-550-B-AP which has the same ratings and limitations as TCM Model IO-550-B, or the conversion of TCM Model IO-520-C or -CB to AvPower Model IO-550-C-AP which has the same ratings and limitations as TCM Model IO-550-C. Conversion of the Models IO-520-B, -BA, or -BB to the Model IO-550-B-AP shall be performed in accordance with AvPower Report AP1004-3 Master Parts List, Revision B dated March 26, 2004 and AvPower Report AP1004-6 Assembly Instructions, Revision B dated March 26, 2004, or later FAA approved revisions. Conversion of the Models IO-520-C or -CB to the Model IO-550-C-AP shall be performed in accordance with AvPower Report AP1004-4 Master Parts List, Revision B dated March 26, 2004 and AvPower Report AP1004-7 Assembly Instructions, Revision B dated March 26, 2004, or later FAA approved revisions. AERO Aviation Company - [STC SE1780NM](https://openairdocs.org/stc/SE1780NM): Installation of Precise Flight 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 SE09997SC](https://openairdocs.org/stc/SE09997SC): Modification of Teledyne Continental Motors IO-520-B or IO-520-BA or IO-520-BB engine. Barrett Performance Aircraft. Lists IO-520 Series - [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-520 Series - [STC SE09559SC](https://openairdocs.org/stc/SE09559SC): Installation of US Airparts roller rocker arm assemblies P/N US92E exhaust and US92I intake. US Airparts, Inc - [STC SE55WE](https://openairdocs.org/stc/SE55WE): Modification of fuel injection manifold valve P/N 626547 to the P/N 631427 or P/N 636326 configuration. AAR Aircraft Services Inc. d/b/a AAR Aircraft Services-Oklahoma. Lists IO-520 Series - [STC SE5222NM](https://openairdocs.org/stc/SE5222NM): Modification to teledyne Continental engine for the installation of turbonormalizing system. Engine Technologies Inc - [STC SE09289SC](https://openairdocs.org/stc/SE09289SC): Installation of modified fuel injector nozzles. General Aviation Modifications, Inc - [STC SE09319SC](https://openairdocs.org/stc/SE09319SC): Modify oil pan adding a new oil sump drain. Texas Skyways Inc. Lists IO-520 Series - [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation - [STC SE8687SW](https://openairdocs.org/stc/SE8687SW): Regrooving of pistons P/N 631475 or P/N 632585. Capehart Industries, Inc. Lists IO-520 Series - [STC SE00005DE](https://openairdocs.org/stc/SE00005DE): Installation of engine oil filter adapter compatable with SA4094NM Oilamatic, Inc. engine preoiling system. Oilamatic Inc - [STC SE8594SW](https://openairdocs.org/stc/SE8594SW): Installation of roller rocker arm P/N PE 92I intake and PE92E exhaust. Performance Engineering - [STC SE3816SW](https://openairdocs.org/stc/SE3816SW): Install Airesearch turbocharger and intercooler. Colorado STC Development - [STC SE5177NM](https://openairdocs.org/stc/SE5177NM): Replacement camshaft P/N629726A3 with camshaft P/N 32122-2. Ritter Cams Inc - [STC SE3757SW](https://openairdocs.org/stc/SE3757SW): Installation of two Rotomaster turbo-chargers, one for each bank of cylinders. Hughes Aviation Services - [STC SE680NE](https://openairdocs.org/stc/SE680NE): Installation of Auto-Vac-4 primary vacuum system. Raymond Ives - [STC SE400NE](https://openairdocs.org/stc/SE400NE): Installation of Auto-vac-2 instrument vacuum system. Raymond Ives - [STC SE7422SW](https://openairdocs.org/stc/SE7422SW): Installation of Performance Engineering roller rocker arms. Performance Engineering - [STC SE2197CE](https://openairdocs.org/stc/SE2197CE): Add the following approved fuel: leaded & unleaded automotive gasoline 91 minimum antiknock index (RON+MON)/2. Intermixing with aviation gasoline also approved. Petersen Aviation Inc - [STC SE3812SW](https://openairdocs.org/stc/SE3812SW): Recontouring and polishing(porting) of intake manifold and exhaust parts and air flow balancing. High Performance Aircraft. Lists IO-520 Series - [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists IO-520 Series - [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP. Phillips Petroleum Co. Lists IO-520 Series - [STC SE244NE](https://openairdocs.org/stc/SE244NE): Installation of Mattituck plasma flame sprayed cylinder barrels in Teledyne reciprocating engines. Mattituck Airbase, Inc. Lists IO-520 Series - [STC SE843GL](https://openairdocs.org/stc/SE843GL): Installation of a fuel flow transducer. Nogle Charles H - [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-520 Series All 53: https://openairdocs.org/engine/continental-io-520-bb/stcs.md --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.