# Continental IO-520-BA - Type: Engine model (FAA registry) - Registry code: 17230 - Manufacturer (registry): CONT MOTOR - Model: IO-520-BA - Engine type: Reciprocating - Power: 285 hp - Data sheet: [TCDS E5CE](https://openairdocs.org/tcds/E5CE) (OpenAirDocs) - Holder: Continental Aerospace Technologies, Inc. - Installed in: 25 registered aircraft - Page: https://openairdocs.org/engine/continental-io-520-ba 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 - [AD 98-01-08](https://openairdocs.org/ad/98-01-08): Exhaust Roller Rocker Arm · Roller rocker arm P/N PE 92I intake and PE92E exhaust (Performance Engineering STC SE8594SW) - [AD 77-13-22](https://openairdocs.org/ad/77-13-22): Crankcase Cracks · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 22 more 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 (25) - [N1248D](https://openairdocs.org/aircraft/N1248D): [Hamilton Dwight A](https://openairdocs.org/faa-owner/HAMILTON%20DWIGHT%20A), [Umatilla, FL](https://openairdocs.org/faa-place/FL/Umatilla), built 1966, S/N CE18 - [N160SP](https://openairdocs.org/aircraft/N160SP): [Aerospace Trust Management LLC Trustee](https://openairdocs.org/faa-owner/AEROSPACE%20TRUST%20MANAGEMENT%20LLC%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), S/N D-9615 - [N17766](https://openairdocs.org/aircraft/N17766): [Elworthy Steven M](https://openairdocs.org/faa-owner/ELWORTHY%20STEVEN%20M), [Huntington Beach, CA](https://openairdocs.org/faa-place/CA/Huntington%20Beach), built 1977, S/N E-1023 - [N18275](https://openairdocs.org/aircraft/N18275): [Strong Tower Worship Center LLC](https://openairdocs.org/faa-owner/STRONG%20TOWER%20WORSHIP%20CENTER%20LLC), [Delhi, LA](https://openairdocs.org/faa-place/LA/Delhi), S/N E-1071 - [N249WL](https://openairdocs.org/aircraft/N249WL): [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 1978, S/N CJ-134 - [N30VT](https://openairdocs.org/aircraft/N30VT): [Plane Fun Inc Tr (Trustee)](https://openairdocs.org/faa-owner/PLANE%20FUN%20INC%20TR%20(TRUSTEE)), [Snellville, GA](https://openairdocs.org/faa-place/GA/Snellville), built 1973, S/N D-9439 - [N34FU](https://openairdocs.org/aircraft/N34FU): [Watson George E](https://openairdocs.org/faa-owner/WATSON%20GEORGE%20E), [Temecula, CA](https://openairdocs.org/faa-place/CA/Temecula), built 1956, S/N BG-180 - [N35BN](https://openairdocs.org/aircraft/N35BN): [Aerospace Trust Management LLC Trustee](https://openairdocs.org/faa-owner/AEROSPACE%20TRUST%20MANAGEMENT%20LLC%20TRUSTEE), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1976, S/N D-9907 - [N447NA](https://openairdocs.org/aircraft/N447NA): [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 1978, S/N CJ-130 - [N45US](https://openairdocs.org/aircraft/N45US): [Flight Operations LLC](https://openairdocs.org/faa-owner/FLIGHT%20OPERATIONS%20LLC), [Hollister, MO](https://openairdocs.org/faa-place/MO/Hollister), built 1977, S/N CE-722 - [N488JF](https://openairdocs.org/aircraft/N488JF): [Mentoraire LLC](https://openairdocs.org/faa-owner/MENTORAIRE%20LLC), [Lake Forest, CA](https://openairdocs.org/faa-place/CA/Lake%20Forest), built 1953, S/N G-298 - [N518M](https://openairdocs.org/aircraft/N518M): [Mull Jason E](https://openairdocs.org/faa-owner/MULL%20JASON%20E), [Chester, NY](https://openairdocs.org/faa-place/NY/Chester), built 1970, S/N D-9111 - [N545GM](https://openairdocs.org/aircraft/N545GM): [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 1972, S/N D-9318 - [N600EJ](https://openairdocs.org/aircraft/N600EJ): [Qualitair LLC Trustee](https://openairdocs.org/faa-owner/QUALITAIR%20LLC%20TRUSTEE), Michelstadt, built 1970, S/N NAV-4-2543 - [N65LV](https://openairdocs.org/aircraft/N65LV): [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 1966, S/N D-8238 - [N65SH](https://openairdocs.org/aircraft/N65SH): [65 Sierra Hotel LLC](https://openairdocs.org/faa-owner/65%20SIERRA%20HOTEL%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1970, S/N CJ-28 - [N675BW](https://openairdocs.org/aircraft/N675BW): [Freedman Stephen Eric](https://openairdocs.org/faa-owner/FREEDMAN%20STEPHEN%20ERIC), [Falls Church, VA](https://openairdocs.org/faa-place/VA/Falls%20Church), built 1978, S/N D-10134 - [N6999N](https://openairdocs.org/aircraft/N6999N): [3v1 LLC](https://openairdocs.org/faa-owner/3V1%20LLC), [Pensacola, FL](https://openairdocs.org/faa-place/FL/Pensacola), built 1975, S/N D-9815 - [N721W](https://openairdocs.org/aircraft/N721W): [Top Flight Aviation LLC](https://openairdocs.org/faa-owner/TOP%20FLIGHT%20AVIATION%20LLC), [Kingfisher, OK](https://openairdocs.org/faa-place/OK/Kingfisher), built 1972, S/N D-9361 - [N8816X](https://openairdocs.org/aircraft/N8816X): [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 1974, S/N CE-489 - [N9066S](https://openairdocs.org/aircraft/N9066S): [Power Flow Systems Inc](https://openairdocs.org/faa-owner/POWER%20FLOW%20SYSTEMS%20INC), [Daytona Beach, FL](https://openairdocs.org/faa-place/FL/Daytona%20Beach), built 1978, S/N E-1305 - [N961SF](https://openairdocs.org/aircraft/N961SF): [Bdr Aviation LLC](https://openairdocs.org/faa-owner/BDR%20AVIATION%20LLC), [Ponte Vedra Beach, FL](https://openairdocs.org/faa-place/FL/Ponte%20Vedra%20Beach), built 1964, S/N D 7541 - [N964P](https://openairdocs.org/aircraft/N964P): [Bonanza 964 LLC](https://openairdocs.org/faa-owner/BONANZA%20964%20LLC), [Davie, FL](https://openairdocs.org/faa-place/FL/Davie), built 1976, S/N E-800 - [N974CC](https://openairdocs.org/aircraft/N974CC): [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 1964, S/N D-7498 - [N98MR](https://openairdocs.org/aircraft/N98MR): [Aviato LLC](https://openairdocs.org/faa-owner/AVIATO%20LLC), [Heath, TX](https://openairdocs.org/faa-place/TX/Heath), built 1978, S/N D-10119 ## NTSB investigations (4) 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 CHI08FA053](https://openairdocs.org/ntsb/CHI08FA053), Dec 20, 2007: Beech V35B (N17784), Springfield, IL, destroyed, 3 fatal. Probable cause: The loss of control during an instrument approach due to spatial disorientation. - [NTSB MIA93LA034](https://openairdocs.org/ntsb/MIA93LA034), Dec 18, 1992: Beech A36 (N9066S), Miami, FL, substantial damage. Probable cause: THE PILOT IN COMMAND'S INADVERTENT ACTIVATION OF THE LANDING GEAR SWITCH WHILE ATTEMPTING TO RAISE WING FLAPS DURING LANDING ROLLOUT, RESULTING IN COLLAPSE OF THE LANDING GEAR. CONTRIBUTING TO THE… - [NTSB IAD79FID06](https://openairdocs.org/ntsb/IAD79FID06), Feb 8, 1979: Beech A-36 (N9066S), Richmond, VA, substantial damage - [NTSB FTW72FPG65](https://openairdocs.org/ntsb/FTW72FPG65), Mar 16, 1972: Beech V35 (N721W), Midway, AR, substantial damage, 1 fatal ## FAA accident and incident reports (10) 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 20210717010849I](https://openairdocs.org/incident/20210717010849I), Jul 17, 2021: Beech S35 (N961SF), St Augustine, FL, Minor damage. The following is a statement the maintenance mechanic had with the pilot after the incident: "the pilot stated that he was in a turning maneuver and was also… - [Incident 20210416006089I](https://openairdocs.org/incident/20210416006089I), Apr 16, 2021: Beech F33A (N8816X), Fort Pierce, FL, Minor damage. St. lucie county, treasure coast international airport, ft. Pierce, FL (fpr) Location of incident/accident: rwy 10R and bravo, Fort Pierce (fpr) Time and date… - [Incident 20151008023919I](https://openairdocs.org/incident/20151008023919I), Oct 8, 2015: Beech V35B (N44985), Hudson, NY, Minor damage. On October 9 2015 the albany flight standards district office (FSDO) was notified of an occurrence at airport designator 1B1 on 10/08/2015 at approximately… - [Incident 20120708011969I](https://openairdocs.org/incident/20120708011969I), Jul 8, 2012: Beech F33C (N249WL), Eagle Lake, TX, Minor damage. The pilot stated he forgot to lower the landing gear. Aircraft landed with the landing gear in the up position. No injuries, minor damage to aircraft. - [Accident 20071220832089A](https://openairdocs.org/incident/20071220832089A), Dec 20, 2007: Beech V35B (N17784), Springfield, IL, Destroyed, 3 fatal. (-23) While on an instrument flight plan and in instrument meteorological conditions, N17784 was being radar vectored by Springfield ATC for the final approach… - [Incident 19940827034779I](https://openairdocs.org/incident/19940827034779I), Aug 27, 1994: Beech V35B (N721W), New Madrid, MO, Minor damage. Electrical failure on takeoff. Circle. Wrong manual gear extend. No electrical defects. Pilot lacked basic info. - [Incident 19930130002659I](https://openairdocs.org/incident/19930130002659I), Jan 30, 1993: Beech A36 (N18275), Columbus, OH, Minor damage. Pilot forgot to lower landing gear. Landed gear up. - [Accident 19921218053239A](https://openairdocs.org/incident/19921218053239A), Dec 18, 1992: Beech A36 (N9066S), Miami, FL, Substantial damage. Retracted gear instead of flaps trying to put weight on gear for early turnoff on landing. - [Incident 19870505023139I](https://openairdocs.org/incident/19870505023139I), May 5, 1987: Beech V35B (N721W), Puxico, MO. Engine quit, aircraft was landed on a road without damage. Left fuel tank had developed a substantial leak. - [Accident 19790208005749A](https://openairdocs.org/incident/19790208005749A), Feb 8, 1979: Beech A36 (N9066S), Richmond, VA, Substantial damage. Pilot lost directional control on landing and hit a snow bank. Runway was found to be free of ice. ## Service difficulty reports (111, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 2026FA0000631](https://openairdocs.org/sdr/2026FA0000631), Jul 8, 2026: IMPULSE COUPLING. DESTROYED. THE PILOT/OWNER ATTEMPTED TO START THE PLANE. AFTER THE FIRST FAILED START, THE PROPELLER STOPPED SPINNING DURING THE SECOND ATTEMPTED START. THE PILOT ABORTED - [SDR 2018FA0000470](https://openairdocs.org/sdr/2018FA0000470), Nov 1, 2018: CONTROL CABLE. CORRODED. DURING CRUSE ALTITUDE 7500FT, THERE WAS A LOSS OF AILERON CONTROL. THE AIRCRAFT DRIFTED TO THE RIGHT AND WAS CORRECTED BY ROLLING LEFT. THE PILOT THEN FELT SOME - [SDR 2018FA0000460](https://openairdocs.org/sdr/2018FA0000460), Sep 1, 2017: GASKET. FAILED. INDUCTION AIR FILTER INSTALLED WITH STC APPROVAL. GASKET FAILING. GASKET IS MISSING IT CAN COME LOOSE AND BE INGESTED IN TO THE ENGINE. 500 HR TT. - [SDR 2017FA0000280](https://openairdocs.org/sdr/2017FA0000280), Jun 26, 2017: MAGNETO. FAULTY. WHILE IN FLIGHT, THE TACH SHOWED THE RIGHT MAG GOING OUT OF SYNC WITH LEFT FOR BRIEF MOMENTS. THE TACH INDICATION WOULD SCROLL DOWN AND BACK UP DURING THESE BRI - [SDR 2017FA0000416](https://openairdocs.org/sdr/2017FA0000416), Oct 20, 2016: BRAKE DISC. FAILED. RIGHT MAIN BRAKE DISC NON-REPAIRABLE DUE TO FAILURE AT ALL THREE MOUNTING POINTS. ORIGINAL EQUIPMENT. - [SDR PAIR201605203338](https://openairdocs.org/sdr/PAIR201605203338), May 19, 2016: CRANKCASE. CRACKED. COMPLIED WITH AD 77-13-22 & FOUND A CRACK APPROX 1 INCH LONG IN THE CRANKCASE CRITICAL AREA EXTENDING DOWNWARD NEAR THE UPPER FWD STUD OF NR 1 CYLINDER. ENG MAN - [SDR 2016FA0000074](https://openairdocs.org/sdr/2016FA0000074), Dec 26, 2015: CAMSHAFT. CRACKED. DURING CLIMB OUT, PIC HEARD ENGINE NOISE. AT 6000 AGL ENGINE SHUTDOWN AND PILOT LANDED AT NEAREST AIRPORT. A SUBSEQUENT ENGINE TEARDOWN REVEALED APPROXIMATELY 1 - [SDR 2011FA0000347](https://openairdocs.org/sdr/2011FA0000347), May 6, 2011: BEARING. SPUN. ENGINE BEGAN RUNNING EXTREMELY ROUGH AND PRODUCED ONLY PARTIAL POWER. MADE A PRECAUTIONARY LANDING WITHIN 5 MINUTES. ON TEARDOWN, DISCOVERED NR 2 MAIN BEARING H - [SDR 2010FA0000538](https://openairdocs.org/sdr/2010FA0000538), May 17, 2010: RIB. CRACKED. DURING AN ANNUAL INSP, (1) NOSE RIB WAS FOUND CRACKED IN THE RT FLAP. IT IS THE RIB LOCATED DIRECTLY BENEATH THE ATTACH BRACKET MOUNTED ON THE SKIN. - [SDR 2010FA0000580](https://openairdocs.org/sdr/2010FA0000580), May 17, 2010: RIB. CRACKED. ((OF1R)) DURING AN ANNUAL INSP, 1 RT FLAP NOSE RIB WAS FOUND CRACKED. IT IS THE RIB LOCATED DIRECTLY BENEATH THE ACTUATOR ATTACH BRACKET. IT WAS CRACKED IN THE - [SDR 2008FA0000436](https://openairdocs.org/sdr/2008FA0000436), May 6, 2008: CYLINDER. CRACKED. CRACK VISIBLE AT NR 4 CYLINDER. CRACK APPEARS TO START AT CASTING ANOMALY, CONTINUES TO EDGE OF FINS, AND IS VISIBLE AT THE FIRST FOUR COOLING FINS. ALSO VERIFI - [SDR XGN2008F00001](https://openairdocs.org/sdr/XGN2008F00001), Jan 7, 2008: CYLINDER HEAD. CRACKED. ENGINE CYLINDER HEAD CRACKED. (K) - [SDR XGN2008F00002](https://openairdocs.org/sdr/XGN2008F00002), Jan 7, 2008: CYLINDER HEAD. CRACKED. ENGINE CYLINDER HEAD CRACKED. (K) - [SDR XGN2008F00000](https://openairdocs.org/sdr/XGN2008F00000), Dec 7, 2007: CYLINDER HEAD. CRACKED. ENGINE CYLINDER HEAD CRACKED. (K) - [SDR 2007FA0001054](https://openairdocs.org/sdr/2007FA0001054), Nov 21, 2007: CYLINDER HEAD. CRACKED. CRACKED BEHIND INJECTOR BETWEEN FIRST AND THIRD FIN. SAME AS ALL THE OTHERS. THE (NEW) E-SERIES CYLINDER HEAD IS DEFECTIVE. (K) - [SDR 2007FA0001055](https://openairdocs.org/sdr/2007FA0001055), Nov 21, 2007: CYLINDER HEAD. CRACKED. CYLINDER HEAD CRACKED BEHIND INJECTOR BETWEEN FIN NR 1 AND 3. DEFECTIVE MFG PROCESS. (K) - [SDR XGN2007F00029](https://openairdocs.org/sdr/XGN2007F00029), Nov 21, 2007: CYLINDER HEAD. CRACKED. CYLINDER HEAD CRACKED BEHIND INJECTOR BETWEEN FIN NR1 AND NR 3. - [SDR XGN2007F00030](https://openairdocs.org/sdr/XGN2007F00030), Nov 21, 2007: CYLINDER HEAD. CRACKED. CYLINDER HEAD CRACKED BEHIND INJECTOR BETWEEN 1ST AND 3RD FING. SAME AS ALL THE OTHERS! THE (NEW E-SERIES) CYLINDER HEAD IS DEFECTIVE AND MFG KNOWS IT AND THEY - [SDR 2007FA0001087](https://openairdocs.org/sdr/2007FA0001087), Nov 9, 2007: RIB. CRACKED. AT ANNUAL INSPECTION FOUND RT FLAP ROD ATTACH POINT RIB CRACKED. (K) - [SDR XGN2007F00026](https://openairdocs.org/sdr/XGN2007F00026), Sep 5, 2007: CYLINDER. CRACKED. CRACKED BEHIND INJECTOR BETWEEN 1ST AND 3RD FIN. (K) - [SDR XGN2007F00020](https://openairdocs.org/sdr/XGN2007F00020), Jul 18, 2007: CYLINDER HEAD. CRACKED. ECI, REV 3, E SERIES, CYLINDER ASSY, 611.9. SINCE NEW CRACKED ON TOP OF CYLINDER BEHIND FUEL INJECTOR BETWEEN THE (1ST) AND (3RD) FIN. COMPRESSION CHECK WITH SO - [SDR XGN2007F00022](https://openairdocs.org/sdr/XGN2007F00022), Jul 18, 2007: CYLINDER. CRACKED. REV 3, E SERIES CYLINDER ASSY 611.9 SINCE NEW CRACKED O TOP OF CYLINDER BEHIND FUEL INJECTOR BETWEEN THE FIRST AND THIRD FIN. COMPRESSION CHECK WITH SOAPY WATER - [SDR XGN2007F00023](https://openairdocs.org/sdr/XGN2007F00023), Jul 18, 2007: CYLINDER. CRACKED. REV 3, E SERIES, CYL ASSY 611.9 SINCE NEW. CRACKED ON TOP OF CYLINDER BEHIND FUEL INJECTOR BETWEEN THE FIRST AND THIRD FIN. COMPRESSION CHECK WITH SOAPY WATER R - [SDR XGN2007F00024](https://openairdocs.org/sdr/XGN2007F00024), Jul 18, 2007: CYLINDER. CRACKED. REV 3, E SERIES CYLINDER ASSY 611.9. SINCE NEW, CRACKED ON TOP OF CYLINDER BEHIND FUEL INJECTOR BETWEEN FIRST AND THIRD FIN. COMPRESSION CHECK WITH SOAPY WATER - [SDR 2007FA0000391](https://openairdocs.org/sdr/2007FA0000391), Apr 11, 2007: MAGNETO. FAILED. DURING NORMAL FLIGHT, VFR CONDITIONS, LT MAGNETO FAILED TO CONTINUE FIRING. AC LANDED WITHOUT INCIDENT. UPON TROUBLESHOOTING LT MAGNETO FOUND TO ONLY FIRE ON ON - [SDR XGN2007F00001](https://openairdocs.org/sdr/XGN2007F00001), Dec 26, 2006: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEAD. (K) - [SDR 2006FA0001207](https://openairdocs.org/sdr/2006FA0001207), Nov 22, 2006: CASE. DAMAGED. ENGINE LT CASE, MALT DEVELOPED HOLE APPROX 6 INCHES X 4 INCHES AS ROD-PISTON APPEARS TO BE MISSING FOR NR 4 CYLINDER. ENGINE OPERATED: (104 HOURS - 2004), (14 H - [SDR 2006FA0001229](https://openairdocs.org/sdr/2006FA0001229), Nov 22, 2006: LINE. BROKEN. STARFLEX 193, LOW PRESSURE HOSE, LP MIL-H-50555 WAS USED TO CONNECT OIL COOLER TO FIREWALL FITTING. OIL PRESSURE WILL RUN BETWEEN 50-100 PSI IN LINE. HOSE BROKE - [SDR XGN2007F00002](https://openairdocs.org/sdr/XGN2007F00002), Oct 10, 2006: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEADS. (K) - [SDR XGN2007F00003](https://openairdocs.org/sdr/XGN2007F00003), Oct 10, 2006: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEADS. (K) - [SDR XGN2007F00017](https://openairdocs.org/sdr/XGN2007F00017), Oct 10, 2006: CYLINDER. CRACKED. CRACKED CYLINDER HEADS. (K) - [SDR XGN2007F00019](https://openairdocs.org/sdr/XGN2007F00019), Oct 10, 2006: CYLINDER. CRACKED. CRACKED CYLINDER HEADS. (K) - [SDR XGN2007F00018](https://openairdocs.org/sdr/XGN2007F00018), Sep 25, 2006: CYLINDER. CRACKED. CRACKED CYLINDER HEAD. (K) - [SDR XGN2006F00005](https://openairdocs.org/sdr/XGN2006F00005), May 23, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00006](https://openairdocs.org/sdr/XGN2006F00006), May 23, 2006: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00007](https://openairdocs.org/sdr/XGN2006F00007), May 23, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00008](https://openairdocs.org/sdr/XGN2006F00008), May 23, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00009](https://openairdocs.org/sdr/XGN2006F00009), May 23, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00011](https://openairdocs.org/sdr/XGN2006F00011), May 23, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR X6N2006F00000](https://openairdocs.org/sdr/X6N2006F00000), May 23, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00000](https://openairdocs.org/sdr/XGN2006F00000), Apr 14, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACK BETWEEN THE EXHAUST VALVE SEAT AND THE BOTTOM SPARK PLUG HOLE. DUE TO THE CYLINDER HEAD FAILURES, WE ARE DOING COMPRESSION CHECKS AT 25 HR I - [SDR XGN2006F00002](https://openairdocs.org/sdr/XGN2006F00002), Apr 14, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACKED. (K) - [SDR XGN2006F00069](https://openairdocs.org/sdr/XGN2006F00069), Apr 9, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00026](https://openairdocs.org/sdr/XGN2006F00026), Apr 6, 2006: CYLINDER. CRACKED. CYLINDER HEADS CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR XGN2006F00012](https://openairdocs.org/sdr/XGN2006F00012), Apr 4, 2006: CYLINDER. CRACKED. CYLINDER HEAD CRACKED IN THE EXHAUST PORT AREA. (K) - [SDR 2006FA0000183](https://openairdocs.org/sdr/2006FA0000183), Feb 3, 2006: PISTON. DAMAGED. ALL 6 PISTON SKIRTS HITTING CASE. ALL PISTON DAMAGE BEYOND REPAIR. (K) - [SDR XGN2005F00011](https://openairdocs.org/sdr/XGN2005F00011), Oct 11, 2005: CYLINDER. CRACKED. CRACKS FOUND AT THE 50 HOUR INSPECTION. ON GOING PROBLEM WITH THE ECI CYLINDERS. (K) - [SDR XGN2005F00012](https://openairdocs.org/sdr/XGN2005F00012), Oct 11, 2005: CYLINDER. CRACKED. CRACKS FOUND AT THE 50 HR INSPECTION. ON GOING PROBLEM WITH THE ECI CYLINDERS. (K) - [SDR XGN2005F00013](https://openairdocs.org/sdr/XGN2005F00013), Oct 11, 2005: CYLINDER. CRACKED. HEADS FOUND CRACKED AT THE 100 HR INSPECTION. 5 OF THE 6 CYLINDERS HAVE BEEN CHANGED IN THE LAST 400 HOURS OF OPERATION. THIS CONTINUES TO BE AN ON GOING PROBLE - [SDR XGN2005F00015](https://openairdocs.org/sdr/XGN2005F00015), Oct 11, 2005: CYLINDER. CRACKED. THESE CYLINDERS SHOWED TO BE CRACKED IN THE EXHAUST SIDE OF THE HEAD. THE LEAKS SHOWED UP WHEN DOING THE COMPRESSION CHECK. DUE TO THE NR OF CRACKED CYLINDER HE All 111: https://openairdocs.org/engine/continental-io-520-ba/reports.md ## STCs that may be installed (OpenAirDocs) (60, 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 SE94WE](https://openairdocs.org/stc/SE94WE): Installation of oil fitting(AN-823-5D) in rocker box cover. Airwolf Filter Corporation - [STC SE00115SE](https://openairdocs.org/stc/SE00115SE): Replaces Teledyne-Continental Part Number 646277 lifter bodies. B & B Aviation LLC - [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 SE3330NM](https://openairdocs.org/stc/SE3330NM): Continental valve cover gasket. Real Gaskets Tennessee - [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 SE993SO](https://openairdocs.org/stc/SE993SO): Installation of fuel line filters into the individual fuel injector lines in accordance with Beryl D Shannon Aviation Specialties, Inc. Installations Instructions BI 2500, approved May 24, 1976, or later FAA approved revision. D'Shannon Products Ltd - [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 SE00392NY](https://openairdocs.org/stc/SE00392NY): Installation of 'second wind' auxiliary vacuum system intake manifold air adapter assembly. Must be performed with STC SA00391NY. Flight Life, Inc - [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 SE00143SE](https://openairdocs.org/stc/SE00143SE): Replaces the following Teledyne-Continental part numbers: 641682 (Rocker Arm, Exhaust), 539742 (Rocker Arm, Intake), 539740 (Rocker Arm, Shaft) and 538304 (Pushrod Assembly). Dakota Aircraft Parts Inc - [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 All 60: https://openairdocs.org/engine/continental-io-520-ba/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.