# Continental IO-520-K - Type: Engine model (FAA registry) - Registry code: 17238 - Manufacturer (registry): CONT MOTOR - Model: IO-520-K - Engine type: Reciprocating - Power: 300 hp - Data sheet: [TCDS E5CE](https://openairdocs.org/tcds/E5CE) (OpenAirDocs) - Holder: Continental Aerospace Technologies, Inc. - Installed in: 8 registered aircraft - Page: https://openairdocs.org/engine/continental-io-520-k 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 2023-05-16](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 95-21-15](https://openairdocs.org/ad/95-21-15): Aviation Gasoline · Continental Motors A-65-8, C85-12F, C85-12FJ and 77 more. Effective Nov 28, 1995 - [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 88-03-06](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 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 70-14-07](https://openairdocs.org/ad/70-14-07): Fuel Injection Pump · Continental Motors IO-360-A, IO-360-C, IO-360-D and 25 more. Effective Nov 22, 1974 - [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 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 94-14-12](https://openairdocs.org/ad/94-14-12) (historical): Octane Aviation Gasoline · Teledyne Continental Motors A-65-8, C85-12, E185-11 and 68 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) (10) - [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 ## Registered aircraft (8) - [N14732](https://openairdocs.org/aircraft/N14732): [Robson Thomas A](https://openairdocs.org/faa-owner/ROBSON%20THOMAS%20A), [Mcdonough, GA](https://openairdocs.org/faa-place/GA/Mcdonough), built 1974, S/N 75-30756 - [N14764](https://openairdocs.org/aircraft/N14764): [Bl14764 LLC](https://openairdocs.org/faa-owner/BL14764%20LLC), [Homer, LA](https://openairdocs.org/faa-place/LA/Homer), built 1974, S/N 74-30701 - [N376CW](https://openairdocs.org/aircraft/N376CW): [Weavers Enterprises LLC](https://openairdocs.org/faa-owner/WEAVERS%20ENTERPRISES%20LLC), [Annville, PA](https://openairdocs.org/faa-place/PA/Annville), built 1976, S/N 76-30841 - [N575JH](https://openairdocs.org/aircraft/N575JH): [Dunbar Stephen E Trustee](https://openairdocs.org/faa-owner/DUNBAR%20STEPHEN%20E%20TRUSTEE), [Broken Arrow, OK](https://openairdocs.org/faa-place/OK/Broken%20Arrow), built 1975, S/N 75-30791 - [N6601V](https://openairdocs.org/aircraft/N6601V): [Jofredo Corp](https://openairdocs.org/faa-owner/JOFREDO%20CORP), [Zephyrhills, FL](https://openairdocs.org/faa-place/FL/Zephyrhills), built 1970, S/N 30294 - [N868CT](https://openairdocs.org/aircraft/N868CT): [Privette Hugh T Trustee](https://openairdocs.org/faa-owner/PRIVETTE%20HUGH%20T%20TRUSTEE), [Colorado Springs, CO](https://openairdocs.org/faa-place/CO/Colorado%20Springs), built 1974, S/N 74-30726 - [N9521E](https://openairdocs.org/aircraft/N9521E): [Schmidt Sanford V](https://openairdocs.org/faa-owner/SCHMIDT%20SANFORD%20V), [Kingsville, MD](https://openairdocs.org/faa-place/MD/Kingsville), built 1976, S/N 76-30832 - [N9606E](https://openairdocs.org/aircraft/N9606E): [Neighborhood Helping Hands LLC](https://openairdocs.org/faa-owner/NEIGHBORHOOD%20HELPING%20HANDS%20LLC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 1976, S/N 76-30819 ## NTSB investigations (1) 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 GAA17CA366](https://openairdocs.org/ntsb/GAA17CA366), Jun 24, 2017: Bellanca 1730 (N575JH), Burnet, TX, substantial damage. Probable cause: The pilot’s improper landing flare and subsequent failure to maintain directional control during the landing. ## FAA accident and incident reports (11) 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 20241010015879I](https://openairdocs.org/incident/20241010015879I), Oct 10, 2024: Bellanca 17-30A (N9606E), Buckeye, AZ, Minor damage. The pilots spent one hour in the pattern at kbxk on October 8, 2024. They practiced seven take offs, landings, and taxi-backs. The landing gear worked… - [Accident 20200619008019A](https://openairdocs.org/incident/20200619008019A), Jun 19, 2020: Bellanca 17-30A (N224HW), Martinton, IL, Substantial damage. On June 19, 2020 N224HW, a belanca 17-30A, attempted a precautionary landing on a gravel road approximately 9 miles southeast of the greater kankakee airport… - [Accident 20170624008639A](https://openairdocs.org/incident/20170624008639A), Jun 24, 2017: Bellanca 17-30A (N575JH), Burnett, TX, Destroyed. PIC took off from 88R at approximately 0715 (CST) in-route to kbmq. Upon arrival around 0730 the PIC landed on rwy 19 where he entered into a left path off… - [Incident 20151014022989I](https://openairdocs.org/incident/20151014022989I), Oct 14, 2015: Bellanca 17-30A (N14764), Shreveport, LA, Minor damage. Aircraft loss electrical power in flight, on landing nose gear collapsed causing prop to strike runway - [Incident 20131003020939I](https://openairdocs.org/incident/20131003020939I), Oct 3, 2013: Bellanca 17-30A (N14764), Minden, LA, Minor damage. Upon landing roll out the nose gear and right main landing gear collapsed causing the propeller and right wing tip to contact the runway surface. - [Incident 20031106032509I](https://openairdocs.org/incident/20031106032509I), Nov 6, 2003: Blanca 1730A (N6601V), Bentonville, AR, Minor damage. (-23) On November 6, 2003, at 1345 CST, a Bellanca aircraft, N6601V, operated by Mr. Robert coil on an IFR flight plan from vbt to ski, while taxiing for take… - [Incident 20001007016659I](https://openairdocs.org/incident/20001007016659I), Oct 7, 2000: Blanca 1730A (N6601V), Wall Lake, IA, Minor damage. (-23) Pilot claimed he possibly struck a bird on final approach. There was damage to the right wing tip. Small pieces were found under the approach area.… - [Incident 19980128005049I](https://openairdocs.org/incident/19980128005049I), Jan 28, 1998: Blanca 1730A (N9606E), Ames, IA, Minor damage. Narrative: Mr. Johnson landed on runway 19 at Ames, Iowa. Wind was 250 degree at 7 knots. When nosewheel touched down, aircraft veered left off runway. No… - [Incident 19850924064759I](https://openairdocs.org/incident/19850924064759I), Sep 24, 1985: Blanca 1730A (N14732), Wheeler, TX, Minor damage. During turn to taxi back on runway, right main wheel went into wet sand. Area washed out by rain on preceding day. - [Incident 19820624070319I](https://openairdocs.org/incident/19820624070319I), Jun 24, 1982: Blanca 1730A (N14732), Del Norte, CO, Substantial damage. Tried to take off downwind at high density altitude. Failed to out climb rising terrain. Wheels up impact. - [Incident 19810815058239I](https://openairdocs.org/incident/19810815058239I), Aug 15, 1981: Blanca 1730A (N6601V), Graham, TX, Minor damage. Za Private field landing. Not properly maintained. Struck trees. Damaged gear and wing. ## Service difficulty reports (14) As reported by operators and repair stations, by the model named in the report. - [SDR CA151208017](https://openairdocs.org/sdr/CA151208017), Dec 8, 2015: LEG ASSY. CRACKED. (CAN) DURING ANNUAL INSPECTION THE LT MLG STRUT WOULD NOT HOLD A NITROGEN CHARGE. UPON FURTHER INVESTIGATION IT WAS OBSERVED THAT THE UPPER LEG OF THE MLG ASSY - [SDR CA150127005](https://openairdocs.org/sdr/CA150127005), Jan 23, 2015: CHAIN. DETACHED. (CAN) DURING A TRAINING FLIGHT, PILOT REPORTED THAT THE ELEVATOR TRIM WHEEL JAMMED IN FLIGHT, DURING CRUISE, WITH TRIM IN A RELATIVELY NEUTRAL POSITION. THE PIL - [SDR 2010FA0000831](https://openairdocs.org/sdr/2010FA0000831), Jul 30, 2010: ROD END. FAILED. DURING TOUCHDOWN, NLG FAILED AND PARTIALLY COLLAPSED UPON CONTACT WITH THE RUNWAY. DURING THE INVESTIGATION AND RESEARCH INTO THE NLG SYS AND LINKAGE, IT APPEAR - [SDR 2007FA0000678](https://openairdocs.org/sdr/2007FA0000678), Jun 24, 2007: SHUTTLE VALVE. MALFUNCTIONED. THE AIRCRAFT LOST ELECTRICAL POWER AND PILOT TRIED TO EXTEND THE LANDING GEAR USING THE EMERGENCY LEVER. THE EMERGENCY LOWERING OF THE LANDING GEAR DID NOT TAKE - [SDR 2007FA0000093](https://openairdocs.org/sdr/2007FA0000093), Dec 25, 2006: CRANKSHAFT. BROKEN. CRANKSHAFT IS BROKEN IN AREA OF NR6, NR5 ROD JOURNAL. CRANKSHAFT BROKE ON APPROACH TO LANDING AS PROP RPM CONTROL WAS ADVANCED ON SHORT FINAL. ENGINE POWER UNDE - [SDR 2005FA0000270](https://openairdocs.org/sdr/2005FA0000270), Sep 28, 2004: CYLINDER HEAD. SEPARATED. AIRCRAFT ANNUAL INSP- 2 WEEKS PRIOR- REPLACED EXHAUST AND INTAKE VALVES ON NR 2 CYLINDER DUE TO LOW COMPRESSION. FLEW 6 HOURS PRIOR TO INCIDENT. IN CRUISE FLIGH - [SDR 20001101SH006](https://openairdocs.org/sdr/20001101SH006), Aug 2, 2000: SOLENOID. FAILED. PRIOR TO TAKEOFF ON ENGINE RUN-UP, AIRCRAFT LOST ALL ELECTRICAL POWER, STARTER SOLENOID STAYED ENGAGED. THE ENGINE RAN THE STARTER, CAUSED A REVERSE CURRENT FLO - [SDR 20000404SH001](https://openairdocs.org/sdr/20000404SH001), Mar 8, 2000: EXHAUST VALVE. WORN. EXCESSIVE WEAR FOUND DURING COMPRESSION TEST. EXHAUST VALVE WAS LEAKING. EX GUIDE MEASURED .4384 INCH AT THE TOP AND .4624 INCH AT THE BOTTOM. EX VALVE MEASURED - [SDR 20000404SH002](https://openairdocs.org/sdr/20000404SH002), Mar 8, 2000: GUIDE. WORN. EXCESSIVE WEAR FOUND DURING COMPRESSION TEST. EXHAUST VALVE WAS LEAKING. EX GUIDE MEASURED .4384 INCH AT THE TOP AND .4624 INCH AT THE BOTTOM. EX VALVE MEASURED - [SDR 20000412SH008](https://openairdocs.org/sdr/20000412SH008), Feb 10, 2000: WIRE. ARCED. OPERATOR REPORTED DISCHARGE FROM ALTERNATOR IN CRUISE FLIGHT. MASTER SWITCH WAS TURNED OFF. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE DISCOVERED ONE BRUSH W - [SDR 99ZZZX1936](https://openairdocs.org/sdr/99ZZZX1936), Apr 26, 1999: CYLINDER. LOOSE. ENGINE LOG ENTRY JANUARY 3, 1991, FOR REMOVAL AND REPLACEMENT OF ALL 6 ENGINE CYLINDERS. CYLINDERS INSTALLED WERE CERMICRON CYLINDERS, FLANGES WERE PAINTED ORAN - [SDR 98ZZZX4661](https://openairdocs.org/sdr/98ZZZX4661), Nov 30, 1998: GUIDE. INCOMPATIBLE. EXHAUST VALVE STICKING AND MATERIAL TRANSFER DUE TO MATERIAL INCOMPATIBILITY. EXHAUST VALVE (P/N SA643873), STEM IS CHROME PLATED AND VALVE GUIDE (P/N SA631496) - [SDR 98ZZZX4662](https://openairdocs.org/sdr/98ZZZX4662), Nov 30, 1998: VALVE. INCOMPATIBLE. EXHAUST VALVE STICKING AND MATERIAL TRANSFER DUE TO MATERIAL INCOMPATIBILITY. EXHAUST VALVE (P/N SA643873), STEM IS CHROME PLATED AND VALVE GUIDE (P/N SA631496) - [SDR 97ZZZX3158](https://openairdocs.org/sdr/97ZZZX3158), Jun 26, 1997: MAGNETO. DEFECTIVE. LEFT ENGINE WOULD NOT DEVELOP POWER ON TAKEOFF OUT OF BOS. REMOVED AND REPLACED DEFECTIVE LEFT MAGNETO. OPS CHECKED GOOD. ## STCs that may be installed (OpenAirDocs) (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 SE5784NM](https://openairdocs.org/stc/SE5784NM): Replacement of Teledyne Continental original camshaft. B & B Aviation LLC - [STC SE70RM](https://openairdocs.org/stc/SE70RM): Installation of compressor bracket. Air Comm Corporation - [STC SE2068NM](https://openairdocs.org/stc/SE2068NM): Remove fuel injection system, install Marvel Schebler carburetor system and revise operating limits as shown in addendum SE2068NM. Kenmore Air Harbor LLC - [STC SE09637SC](https://openairdocs.org/stc/SE09637SC): Remove existing rocker arm assemblies and install modify rocker arm assemblies. General Aviation Modifications 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 SE3330NM](https://openairdocs.org/stc/SE3330NM): Continental valve cover gasket. Real Gaskets Tennessee - [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 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 SE00577NY](https://openairdocs.org/stc/SE00577NY): Installation of Canadian Aero Mfg. (C.A.M.) Oil Coolers. Canadian Aero Manufacturing - [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 SE00427NY](https://openairdocs.org/stc/SE00427NY): Installation, operation and inspection of CAM oil coolers. Canadian Aero Manufacturing - [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 SE4314NM](https://openairdocs.org/stc/SE4314NM): Replacement of the original engine oil screen with an external mounted full flow oil adapter & spin-on filter. Timberman Allen E - [STC SE8594SW](https://openairdocs.org/stc/SE8594SW): Installation of roller rocker arm P/N PE 92I intake and PE92E exhaust. Performance Engineering - [STC SE5205NM](https://openairdocs.org/stc/SE5205NM): Installation of an Oilamatic engine filter screen adapter. Oilamatic Inc - [STC SE7422SW](https://openairdocs.org/stc/SE7422SW): Installation of Performance Engineering roller rocker arms. Performance Engineering - [STC SE938GL](https://openairdocs.org/stc/SE938GL): Installation of oil filler tube extension. Rapco, Inc - [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 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 - [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists IO-520 Series - [STC SE72WE](https://openairdocs.org/stc/SE72WE): BG-341 spark plug as eligible for installation on listed Continental engines. Lewis Leibee - [STC SE12GL](https://openairdocs.org/stc/SE12GL): Installation of oil filler cap. Ray Whyte Electric Products Co - [STC SE7325SW](https://openairdocs.org/stc/SE7325SW) (historical): Installation of crankcase modifications. RAM Aircraft Limited Partnership --- 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.