# Continental IO-550-F

- Type: Engine model (FAA registry)
- Registry code: 17211
- Manufacturer (registry): CONT MOTOR
- Model: IO-550-F
- Engine type: Reciprocating
- Power: 300 hp
- Data sheet: [TCDS E3SO](https://openairdocs.org/tcds/E3SO) (OpenAirDocs)
- Holder: Continental Aerospace Technologies, Inc.
- Installed in: 26 registered aircraft
- Page: https://openairdocs.org/engine/continental-io-550-f

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 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 93-08-17](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

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 2009-16-03](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) (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 (26)

- [N183SV](https://openairdocs.org/aircraft/N183SV): [Quality Feed Grains Inc](https://openairdocs.org/faa-owner/QUALITY%20FEED%20GRAINS%20INC), [Harrison, AR](https://openairdocs.org/faa-place/AR/Harrison), S/N 05-301031
- [N1982R](https://openairdocs.org/aircraft/N1982R): [Laughlin Michael](https://openairdocs.org/faa-owner/LAUGHLIN%20MICHAEL), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), built 1975, S/N U20602913
- [N206PT](https://openairdocs.org/aircraft/N206PT): [Samaritan Aviation Inc](https://openairdocs.org/faa-owner/SAMARITAN%20AVIATION%20INC), [Mesa, AZ](https://openairdocs.org/faa-place/AZ/Mesa), built 1980, S/N U20605815
- [N207TF](https://openairdocs.org/aircraft/N207TF): [Photos Unlimited Inc](https://openairdocs.org/faa-owner/PHOTOS%20UNLIMITED%20INC), [Rancho Cordova, CA](https://openairdocs.org/faa-place/CA/Rancho%20Cordova), built 1978, S/N 20700492
- [N210CU](https://openairdocs.org/aircraft/N210CU): [Tcl Fbo LLC](https://openairdocs.org/faa-owner/TCL%20FBO%20LLC), [Tuscaloosa, AL](https://openairdocs.org/faa-place/AL/Tuscaloosa), built 1981, S/N 21064452
- [N229WW](https://openairdocs.org/aircraft/N229WW): [Mcgregor Daniel A](https://openairdocs.org/faa-owner/MCGREGOR%20DANIEL%20A), [Denali Park, AK](https://openairdocs.org/faa-place/AK/Denali%20Park), built 1973, S/N U20601807
- [N2914T](https://openairdocs.org/aircraft/N2914T): [Tp Aviation Inc](https://openairdocs.org/faa-owner/TP%20AVIATION%20INC), [Augusta, KS](https://openairdocs.org/faa-place/KS/Augusta), built 1966, S/N 320
- [N2WF](https://openairdocs.org/aircraft/N2WF): [Maine Dept Of Agriculture Conservation & Forestry](https://openairdocs.org/faa-owner/MAINE%20DEPT%20OF%20AGRICULTURE%20CONSERVATION%20%26%20FORESTRY), [Old Town, ME](https://openairdocs.org/faa-place/ME/Old%20Town), built 1975, S/N U20602849
- [N305KW](https://openairdocs.org/aircraft/N305KW): [Pumpkin Eater LLC](https://openairdocs.org/faa-owner/PUMPKIN%20EATER%20LLC), [Tavares, FL](https://openairdocs.org/faa-place/FL/Tavares), built 1978, S/N U20604213
- [N3328D](https://openairdocs.org/aircraft/N3328D): [Acme Aircraft Leasing Mt LLC](https://openairdocs.org/faa-owner/ACME%20AIRCRAFT%20LEASING%20MT%20LLC), [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell), built 1955, S/N 32126
- [N35889](https://openairdocs.org/aircraft/N35889): [Torgerson Management Inc](https://openairdocs.org/faa-owner/TORGERSON%20MANAGEMENT%20INC), [Turtle Lake, WI](https://openairdocs.org/faa-place/WI/Turtle%20Lake), built 1975, S/N U20602783
- [N4790Z](https://openairdocs.org/aircraft/N4790Z): [Bem Holdings LLC](https://openairdocs.org/faa-owner/BEM%20HOLDINGS%20LLC), [Dover, DE](https://openairdocs.org/faa-place/DE/Dover), built 1974, S/N 20700240
- [N518MJ](https://openairdocs.org/aircraft/N518MJ): [Pursuit 53](https://openairdocs.org/faa-owner/PURSUIT%2053), [College Station, TX](https://openairdocs.org/faa-place/TX/College%20Station), built 1981, S/N U20606535
- [N550ZK](https://openairdocs.org/aircraft/N550ZK): [Aviation Trust Company LLC Trustee](https://openairdocs.org/faa-owner/AVIATION%20TRUST%20COMPANY%20LLC%20TRUSTEE), [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City), built 1978, S/N U20604466
- [N565CM](https://openairdocs.org/aircraft/N565CM): [Backcountry Aviation LLC](https://openairdocs.org/faa-owner/BACKCOUNTRY%20AVIATION%20LLC), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 1968, S/N U2061044
- [N6315V](https://openairdocs.org/aircraft/N6315V): [Giroux Michael J](https://openairdocs.org/faa-owner/GIROUX%20MICHAEL%20J), [Trophy Club, TX](https://openairdocs.org/faa-place/TX/Trophy%20Club), built 1985, S/N 85-30995
- [N6352Z](https://openairdocs.org/aircraft/N6352Z): [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), built 1981, S/N U20606250, Sale reported
- [N651SP](https://openairdocs.org/aircraft/N651SP): [New York State Police](https://openairdocs.org/faa-owner/NEW%20YORK%20STATE%20POLICE), [Latham, NY](https://openairdocs.org/faa-place/NY/Latham), built 1986, S/N U20606996
- [N67DJ](https://openairdocs.org/aircraft/N67DJ): [Sunrise Aero LLC](https://openairdocs.org/faa-owner/SUNRISE%20AERO%20LLC), [Nikiski, AK](https://openairdocs.org/faa-place/AK/Nikiski), built 1974, S/N U20602326
- [N6MF](https://openairdocs.org/aircraft/N6MF): [Mission Aviation Fellowship](https://openairdocs.org/faa-owner/MISSION%20AVIATION%20FELLOWSHIP), [Nampa, ID](https://openairdocs.org/faa-place/ID/Nampa), S/N U20605926
- [N75682](https://openairdocs.org/aircraft/N75682): [70 North LLC](https://openairdocs.org/faa-owner/70%20NORTH%20LLC), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), built 1980, S/N 20700638
- [N802U](https://openairdocs.org/aircraft/N802U): [Macair Aviation LLC](https://openairdocs.org/faa-owner/MACAIR%20AVIATION%20LLC), [Xenia, OH](https://openairdocs.org/faa-place/OH/Xenia), built 1969, S/N 20700067
- [N812W](https://openairdocs.org/aircraft/N812W): [Jjc Enterprises Inc](https://openairdocs.org/faa-owner/JJC%20ENTERPRISES%20INC), [Dillingham, AK](https://openairdocs.org/faa-place/AK/Dillingham), built 1975, S/N U20602770
- [N8256Z](https://openairdocs.org/aircraft/N8256Z): [Rapozo Martin](https://openairdocs.org/faa-owner/RAPOZO%20MARTIN), [Tarpon Springs, FL](https://openairdocs.org/faa-place/FL/Tarpon%20Springs), built 1964, S/N 205-0256
- [N8340Q](https://openairdocs.org/aircraft/N8340Q): [Fly8ma LLC](https://openairdocs.org/faa-owner/FLY8MA%20LLC), [Big Lake, AK](https://openairdocs.org/faa-place/AK/Big%20Lake), S/N U20603201
- [N896AH](https://openairdocs.org/aircraft/N896AH): [Aerospace Asset Holdings LLC](https://openairdocs.org/faa-owner/AEROSPACE%20ASSET%20HOLDINGS%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1981, S/N 20700732

## NTSB investigations (7)

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 WPR23LA076](https://openairdocs.org/ntsb/WPR23LA076), Dec 26, 2022: Cessna 210N (N210CU), Morgan, UT, substantial damage. Probable cause: Failure of the brake system O-rings on the left landing gear trunnion, which allowed the hydraulic fluid to drain from the left brake system, resulting in a runway excursion and impact with a fence.
- [NTSB WPR14FA044](https://openairdocs.org/ntsb/WPR14FA044), Nov 6, 2013: Cessna U206F (N206KL), Donnelly, ID, destroyed, 3 fatal. Probable cause: The pilot's failure to maintain clearance from terrain while maneuvering in likely low-ceiling and low-visibility conditions in mountainous terrain.
- [NTSB DEN92LA044](https://openairdocs.org/ntsb/DEN92LA044), Mar 24, 1992: Cessna 180 (N3328D), Erie, CO, substantial damage. Probable cause: A LOSS OF DIRECTIONAL CONTROL WHEN THE PILOT FAILED TO ADEQUATELY COMPENSATE FOR CROSSWIND CONDITIONS DURING LANDING ROLL. A FACTOR WAS: A 27 KNOT CROSSWIND GUST.
- [NTSB CHI91DER01](https://openairdocs.org/ntsb/CHI91DER01), Oct 4, 1990: Cessna 206 (N35889), South St. Paul, MN, substantial damage. Probable cause: THE INADVERTENT DEPLOYMENT OF THE DRAG PARACHUTE. RELATED FACTORS ARE THE PILOT'S IMPROPER REMEDIAL ACTION, HABIT INTERFERENCE, AND THE REDUCED AIRCRAFT CONTROLLABILITY.
- [NTSB CHI82DA069](https://openairdocs.org/ntsb/CHI82DA069), Feb 19, 1982: Cessna 180 (N3328D), New Richland, MN, substantial damage
- [NTSB OAK75DXQ40](https://openairdocs.org/ntsb/OAK75DXQ40), Feb 11, 1975: Cessna 206 (N2665X), Chester, CA, substantial damage
- [NTSB OAK69D0078](https://openairdocs.org/ntsb/OAK69D0078), Jul 21, 1968: Aero Comdr 200D (N2914T), Butte Meadows, CA, substantial damage

## 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.

- [Accident 20221226019859A](https://openairdocs.org/incident/20221226019859A), Dec 26, 2022: Cessna 210N (N210CU), Morgan, UT, Substantial damage. Pilot made landing at 42U, upon landing pilot found the left brake had no pressure. Pilot determined that there was not enough space to try to take off and…
- [Accident 20131106022139A](https://openairdocs.org/incident/20131106022139A), Nov 6, 2013: Cessna U206F (N206KL), Needles, ID, Destroyed, 3 fatal. On November 6, 2013, N206KL, a Cessna 206, piloted by Mr. Dan wilson with two passengers and their cargo, departed mccall airport (myl) at approximately 0900…
- [Accident 19920324007869A](https://openairdocs.org/incident/19920324007869A), Mar 24, 1992: Cessna 180 (N3328D), Erie, CO, Substantial damage. Lost control on landing roll. Left the runway. Overturned in a ditch. Crosswind exceeded crosswind component.
- [Accident 19901004044089A](https://openairdocs.org/incident/19901004044089A), Oct 4, 1990: Cessna U206F (N35889), South St Paul, MN, Substantial damage. Ballistic parachute opened on climb out. Used incorrect procedure to jettison. Came down vertically into trees.
- [Incident 19860302010439I](https://openairdocs.org/incident/19860302010439I), Mar 2, 1986: Cessna T207A (N75682), Port Clarence, AK. Drop in amp followed by oil pressure drop. Diverted. Belly covered with oil. Oil check valve stuck.
- [Accident 19820219005139A](https://openairdocs.org/incident/19820219005139A), Feb 19, 1982: Cessna 180 (N3328D), New Richland, MN, Substantial damage. Landed on wet, slippery runway. Lost control, skidded into a snowbank. Flipped over.
- [Accident 19750211002029A](https://openairdocs.org/incident/19750211002029A), Feb 11, 1975: Cessna P206A (N2665X), Chester, CA, Substantial damage. Flt conducted for oil consumption check. Rwy covered by 4-5 ft snow. Unauth flt.

## Service difficulty reports (81, newest 50)

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

- [SDR 2024FA0000814](https://openairdocs.org/sdr/2024FA0000814), Nov 4, 2024: ALTERNATOR. DEFECTIVE. AT THE END OF A FLIGHT TOTALING 2.5 HOURS THE AMMETER INDICATED A DISCHARGE AND LOW VOLTAGE WARNING LIGHT ILLUMINATED. I WAS ALMOST OVERHEAD MY POINT OF INTENDE
- [SDR 2024FA0000195](https://openairdocs.org/sdr/2024FA0000195), Mar 1, 2024: TUBE. LEAKING. TUBE WAS INSTALLED NEW 2 YEARS PRIOR. NO KNOWN ISSUES UNTIL ONE DAY WAS FLAT WHEN WE ENTERED THE HANGAR. CRACK WAS FOUND ON VALVE STEM BETWEEN CUT THREADS IN TH
- [SDR 2021F00034](https://openairdocs.org/sdr/2021F00034), Feb 1, 2021: PIN. WORN. DURING CRUISE POWER SETTINGS ALTERNATOR BELT WOULD BE THROWN OFF. AT RECOMMENDATION OF ENGINE SHOP, REMOVED CYLINDERS ONE AND TWO. REMOVED COUNTERWEIGHT AND FOU
- [SDR 2020FA0000372](https://openairdocs.org/sdr/2020FA0000372), Aug 17, 2020: CYLINDER. LEAKING. AFTER CLEANING ENGINE WITH FOAMING DEGREASER ( VERY EFFECTIVE ), NOTED SLIGHT OIL STAIN ON CYLINDER CASTING. BETWEEN 5-6 & 6-7TH FIN- CLEANED MULTIPLE TIMES, MO
- [SDR CA190418005](https://openairdocs.org/sdr/CA190418005), Mar 21, 2019: TUBE. CRACKED. (CAN) THIS NEW ALTERNATOR CAME EQUIPPED WITH A BLAST TUBE BOLTED TO THE REAR OF THE ALTERNATOR HOUSING FOR DYNAMIC AIR FLOW COOLING OF THE UNIT. THE BLAST TUBE 
- [SDR EVGR201710130001](https://openairdocs.org/sdr/EVGR201710130001), Aug 23, 2017: ROD BEARING. BROKEN. DUE TO SLOWLY PROGRESSING OIL CONSUMPTION RATE, PULLED THE NR 1 CYLINDER AND DISCOVERED THE NR 2 CONNECTING ROD CAP WAS LIGHTLY SCRAPING THE BOTTOM PISTON PIN B
- [SDR 2017FA0000455](https://openairdocs.org/sdr/2017FA0000455), Aug 16, 2017: SELECTOR VALVE. MALFUNCTIONED. OVERHAULED FUEL SELECTOR VALVE WILL NOT SHUT OFF FUEL IN OFF POSITION. OVERHAULED BY AIRCRAFT ACCESSORIES INTERNATIONAL,
- [SDR 2016FA0000587](https://openairdocs.org/sdr/2016FA0000587), Dec 2, 2016: MOUNT. DEFECTIVE. DURING A 50/100HR ENGINE INSPECTION, NOTICED THAT A SCREW ATTACHED TO SAFETY WIRE WAS STICKING OUT BETWEEN THE BACK SIDE OF THE ENGINE BAFFLE AND FWD SIDE OF TH
- [SDR 2016FA0000583](https://openairdocs.org/sdr/2016FA0000583), Nov 28, 2016: ALTERNATOR. FAILED. PRIMARY ALTERNATOR FAILED IN FLIGHT.
- [SDR 2016FA0000539](https://openairdocs.org/sdr/2016FA0000539), Oct 26, 2016: BELT. SHEARED. SQUEALING SOUND AT ENGINE START VOLTMETER SHOWING DISCHARGE. ALTERNATOR BELT WAS SHEARED.
- [SDR NXY2016F00000](https://openairdocs.org/sdr/NXY2016F00000), Jul 14, 2016: ENGINE. SEIZED. SHORTLY AFTER START, THE ENGINE STOPPED DURING GROUND OPERATION. ENGINE SEEMS TO BE SEIZED, HOWEVER FURTHER EVALUATION IS NEEDED TO ASCERTAIN CAUSE. THERE WAS N
- [SDR P9KA2015120803](https://openairdocs.org/sdr/P9KA2015120803), Oct 7, 2015: GOVERNOR. INTERMITTENT. DURING A PREFLIGHT RUN UP, THE GOVERNOR WOULD NOT CYCLE THE PROPELLER EVEN WHEN LT IN THE LOW RPM POSITION FOR 10+ SECONDS. THE PROPELLER GOVERNOR WAS REPLACED 
- [SDR P9KA2015091401](https://openairdocs.org/sdr/P9KA2015091401), Sep 8, 2015: THRU BOLT. BROKEN. WHILE PERFORMING A ROUTINE OIL & FILTER CHANGE, MECHANIC SAW LARGE AMOUNTS OF LEAKED OIL & A CRANKCASE THROUGH BOLT NUT IN THE COWLING. FURTHER INVESTIGATION RE
- [SDR CA150803001](https://openairdocs.org/sdr/CA150803001), Aug 2, 2015: SPROCKET. SHEARED. (CAN) DURING FLIGHT, PILOT NOTICED THE ELEVATOR TRIM WHEEL, FREEWHEELING, WITH NO CONTROL OF THE ELEVATOR TRIM TAB, NO UNCONTROLLED MOVEMENT OF THE ELEVATOR TRI
- [SDR CA150602027](https://openairdocs.org/sdr/CA150602027), Jun 1, 2015: EXHAUST VALVE. MELTED. (CAN) PILOT REPORTED RT EXHAUST SOUNDS LIKE ITS HITTING STRUT. INSPECTED & FOUND NO EVIDENCE. GND RUN OF ACFT SHOWED CYLINDER NR 3 EGT 800-1000 DEGREES LOWER TH
- [SDR 2015FA0000540](https://openairdocs.org/sdr/2015FA0000540), May 2, 2015: ROD BEARING. FAILED. ROD BEARING FAILURE ON REMANUFACTUED ENGINE. 13 MONTHS, 406 HOURS. SUMP IAW STC SE09319SC. ENGINE MODIFIED. STC SUMP MFG DEFECTIVE CAUSING INTERFERENCE WITH OIL
- [SDR CA140715011](https://openairdocs.org/sdr/CA140715011), Jul 14, 2014: BEARING. FAILED. (CAN) ALTERNATOR ARMATURE REAR SUPPORT BEARING DISINTEGRATED IN 2.7 HOURS SINCE INSTALL. UNIT TO BE RETURNED TO OVERHAUL SHOP FOR WARRANTY INSPECTION.
- [SDR 2014FA0000174](https://openairdocs.org/sdr/2014FA0000174), Feb 4, 2014: PUMP. FAILED. FUEL PUMP FAILED DURING FLIGHT UNDER NORMAL OPERATING CONDITIONS. PUMP REMOVED FROM THE ENGINE AND WAS FOUND TO BE SEIZED. PUMP SENT FOR EVALUATION.
- [SDR CA130930006](https://openairdocs.org/sdr/CA130930006), Sep 26, 2013: CYLINDER. CRACKED. (CAN) JUST AFTER TAKEOFF, PILOT HEARD A LOUD BANG. PARTIAL POWER LOSS WAS NOTED AND THE ACFT RETURNED TO DEPARTURE. VISUAL INSPECTION HAS SHOWN SUBSTANTIAL OIL 
- [SDR 2013FA0000446](https://openairdocs.org/sdr/2013FA0000446), Jul 5, 2013: BRACKET. CRACKED. BALANCE TUBE MOUNTING BRACKET CRACKED. TUBE CRACKED AT ONE END.
- [SDR 2013FA0000383](https://openairdocs.org/sdr/2013FA0000383), Jul 2, 2013: THRU BOLT. LOOSE. WHILE IN THE PROCESS OF REMOVING AND REPLACING A ENGINE OIL TEMP PROBE, MECHANIC DISCOVERED ONE OF THE ENGINE CASE THROUGH BOLTS WAS MISSING NUTS AND WASHERS ON
- [SDR CA130611007](https://openairdocs.org/sdr/CA130611007), Jun 10, 2013: BAR. CRACKED. (CAN) UPON LANDING FRONT SPREADER BAR DETACHED FROM LT FLOAT. UPON SUBSEQUENT INSPECTION FRONT SPREADER BAR SPAR EXHIBITS EVIDENCE OF PREVIOUS CRACKING TO WATER
- [SDR 2013FA0000232](https://openairdocs.org/sdr/2013FA0000232), Mar 22, 2013: BULKHEAD. CRACKED. DURING ANNUAL INSPECTION. AFTER REMOVING FLOAT BUMPERS OFF OF BOTH FLOATS, TWO LARGE CRACKS WERE FOUND ON EACH BULKHEAD NOSE ASSY . THE CRACKS STARTED FROM THE 
- [SDR ENEA2012F00235](https://openairdocs.org/sdr/ENEA2012F00235), Oct 25, 2012: CRANKCASE. PUNCTURED. ON SHORT FINAL, PILOT HEARD AN AUDIBLE BANG WITH ENGINE RUNNING SLIGHTLY ROUGH, MAKING A DIFFERENT NOISE AND NOT DEVELOPING FULL POWER. CONTINUED TO LANDING WIT
- [SDR 2012FA0000522](https://openairdocs.org/sdr/2012FA0000522), Aug 1, 2012: ATTACH FITTING. CRACKED. DURING AN ANNNUAL INSPECTION, FOUND A .7500" CRACK IN THE LT MAIN LANDING GEAR OUTBOARD ATTACH FITTING AS VIEWED THROUGH A FLOOR ACCESS PANEL. THE CRACK IS IN T
- [SDR CA120503001](https://openairdocs.org/sdr/CA120503001), May 2, 2012: SHAFT. BENT. (CAN) DURING INTERNAL, 500 HR INSPECTION OF THE ALTERNATOR THE MAIN SHAFT WAS FOUND TO BE BENT AND THE CASE HALF HAD A SMALL CRACK. ALTERNATOR WAS R & R WITH AN
- [SDR CA110919005](https://openairdocs.org/sdr/CA110919005), Sep 18, 2011: STARTER. FAILED. (CAN) AFTER A WARM UP ENGINE SHUTDOWN. ON THE WARM START ATTEMPT,THE ENGINE "KICKED BACK", BREAKING THE SPRING INSIDE THE STARER DRIVE ASSY. STARTER DRIVE ASSY 
- [SDR SVVA03082001](https://openairdocs.org/sdr/SVVA03082001), Feb 7, 2011: MAIN BEARING. FAILED. FOUND PARTICLES IN OIL FILTER. FURTHER SEARCHING FOR PROBLEM FOUND MAIN BEARING PARTS IN OIL PAN.
- [SDR 2010FA0001232](https://openairdocs.org/sdr/2010FA0001232), Dec 7, 2010: CYLINDER. CRACKED. THE ENGINE HAS APPROX 300 HOURS SINCE MAJOR O/H, THE ENGINE HAD LOW COMPRESSION, UPON BOROSCOPE ALL 6 CYLINDERS WERE REPORTED CRACKED, VARIOUS HEAD CRACKING.
- [SDR 2010FA0001042](https://openairdocs.org/sdr/2010FA0001042), Sep 22, 2010: FLAP SYSTEM. MALFUNCTIONED. DURING A TRAINING FLIGHT, AT ABOUT 2000 FT FLAPS DID NOT RETRACT FROM FULL FLAP EXTENSION DURING RECOVERY FROM AN IMMINENT FULL-FLAP, POWER OFF STALL. SEVERAL U
- [SDR CA100810002](https://openairdocs.org/sdr/CA100810002), Aug 6, 2010: CONNECTING ROD. FAILED. CATASTROPHIC ENGINE FAILURE, CONNECTING RODS CAME THROUGH CASE AND COWL.
- [SDR CA100525014](https://openairdocs.org/sdr/CA100525014), Apr 14, 2010: LIFTER. SPALLED. UPON DISASSEMBLY, DISCOVERED LIFTERS AND CAMSHAFT SPALLED AND CHIPPED. THE INTAKE LIFTER 653888 (CHANGED NOV 16, 2009 DUE TO SB09-07 & AD2009-24-52, APPROX 180 
- [SDR 2010FA0000247](https://openairdocs.org/sdr/2010FA0000247), Mar 8, 2010: LIFTER. SPALLED. LOW COMPRESSION NR 5 CYLINDER - BURNED VALVE. FOUND BOTH LIFTERS FOR INTAKE AND EXHAUST SPALLED. LOOKED AT OTHER LIFTERS IN ENGINE WITH A BORESCOPE AND FOUND SE
- [SDR 2010FA0000248](https://openairdocs.org/sdr/2010FA0000248), Mar 8, 2010: LIFTER. SPALLED. LOW COMPRESSION NR 5 CYLINDER - BURNED VALVE. FOUND BOTH LIFTERS FOR INTAKE AND EXHAUST SPALLED. LOOKED AT OTHER LIFTERS IN ENGINE WITH A BORESCOPE AND FOUND SE
- [SDR CA100116001](https://openairdocs.org/sdr/CA100116001), Jan 15, 2010: TERMINAL. SHORTED. (CAN) ON APPROACH, THE PILOT SELECTED GEAR DOWN IN ANTICIPATION FOR LANDING. AFTER DOING THIS, SPARKS WERE NOTICED BEHIND THE INSTRUMENT PANEL BELOW THE RADIO S
- [SDR CA100114004](https://openairdocs.org/sdr/CA100114004), Jan 13, 2010: ALTERNATOR. FAILED. (CAN) ALTERNATOR FAILED DURING FLIGHT. ELECTRICAL POWER LOSS INDICATED TO CREW. CREW RETURNED FOR LANDING AT CYTZ. (TC NR 20100114004)
- [SDR 2009FA0001018](https://openairdocs.org/sdr/2009FA0001018), Nov 22, 2009: CYLINDER. CRACKED. A COMPRESSION CHECK ON CYL NR 5 RESULTED IN A RATIO OF 20/80. INSP REVEALED A CRACK IN THE CYL HEAD ALMOST THE ENTIRE WIDTH OF THE HEAD, THAT RAN BELOW THE SPAR
- [SDR CA091030001](https://openairdocs.org/sdr/CA091030001), Oct 29, 2009: BOLT. LOOSE. (CAN) ALTERNATOR WAS RETURNED DUE TO FAILURE TO CHARGE BATTERY AND HAD BEEN O/H. UPON INSP THE THROUGH BOLTS WERE FOUND LOOSE. THE STATOR HAD BECOME LOOSE BETWE
- [SDR CA091005009](https://openairdocs.org/sdr/CA091005009), Sep 28, 2009: CYLINDER HEAD. CRACKED. (CAN) DURING ACCOMPLISHMENT OF AD 2009-19-07, MSB 09-1, NR 5 CYL HEAD FOUND CRACKED.
- [SDR 2009FA0000761](https://openairdocs.org/sdr/2009FA0000761), Sep 4, 2009: IGNITION SWITCH. FAILED. IGNITION SWITCH FAILED TO SHUT-OFF MAGENTO DURING A PRE-FLIGHT MAGNETO CHECK AND FAILED AT 1201.1 HOURS SINCE NEW . THE REQUIRED DIODE ON THE STARTER SOLENOID W
- [SDR CA071202001](https://openairdocs.org/sdr/CA071202001), Dec 1, 2007: BULKHEAD. CRACKED. (CAN) DURING COMPLIANCE WITH SEB 93-5 INSP OF LOWER DOOR POST, THE BULKHEAD WAS FOUND CRACKED ON THE LT SIDE, UPPER PART OF LOWER BULKHEAD, JUST IB OF THE WING 
- [SDR 2007FA0000733](https://openairdocs.org/sdr/2007FA0000733), Aug 10, 2007: HUB. CRACKED. HUB, NDI SHOWS RELEVANT INDICATION OF CRACK.(K)
- [SDR 2007FA0000782](https://openairdocs.org/sdr/2007FA0000782), Aug 10, 2007: HUB. CRACKED. HUB, NDI SHOWS RELEVENT INDICATION OF CRACK. (K)
- [SDR R022366](https://openairdocs.org/sdr/R022366), Mar 16, 2007: SEAL RING. DEBONDED. TEFLON (BLADE SEAL) DEBONDED FROM THE SHANK OF BLADE SN A0336 CAUSING GREASE LEAK.
- [SDR CA070327010](https://openairdocs.org/sdr/CA070327010), Feb 8, 2007: CONTROL CABLE. CUT. (CAN) A SCREW FROM THE AVIONIC EQUIPMENT LOOSENED, FELL AND LODGED BETWEEN THE PULLEY AND CABLE FOR THE ELEVATOR FLIGHT CONTROL. WITH TIME, THE CABLE WAS DAMAGE
- [SDR EDRCCUI](https://openairdocs.org/sdr/EDRCCUI), Oct 21, 2006: GEAR SHAFT. SHEARED. DURING PREFLIGHT, ENGINE RUNUP PILOT WAS UNABLE TO CYCLE PROP AND THEN NOTICED ZERO OIL PRESSURE ON THE OIL PRESSURE GAUGE, ENGINE SHUTDOWN. INSPECTION REVEALED
- [SDR CA060629004](https://openairdocs.org/sdr/CA060629004), Jun 29, 2006: DOOR FRAME. CRACKED. (CAN) FORWARD DOOR POST BULKHEAD CRACK DETECTED DURING ACCOMPLISHMENT OF SEB 93-5 CESSNA SERVICE KIT SK206-42 LOWER FORWARD DOORPOST BULKHEAD AND WING STRUT FIT
- [SDR CA060514001](https://openairdocs.org/sdr/CA060514001), May 13, 2006: TORQUE LINK. CRACKED. (CAN) NOSE LANDING GEAR UPPER TORQUE LINK FOUND CRACKED ON BOTH LT AND RT SIDE OF LWR WEB. CRACK WAS DETECTED VISUALLY DURING 50 HR INSP AND LUBRICATION OF NOSE
- [SDR AU510001488](https://openairdocs.org/sdr/AU510001488), Dec 12, 2005: CYLINDER. SEPARATED. (AUS) ENGINE CYLINDER HEAD SEPARATED FROM BARREL. SUSPECT DEFECTIVE CASTING. (OTHER CAUSE: IT`S FAIRLY OBVIOUS THAT CASTING WAS DEFECTIVE ) (CASA# 510001488)
- [SDR AU510001585](https://openairdocs.org/sdr/AU510001585), Dec 12, 2005: STARTER. FAILED. (AUS) ENGINE STARTER MOTOR FAILED TO TURN OVER. INVESTIGATION FOUND A FAILED BRUSH SPRING JAMMED BETWEEN THE BRUSH AND COMMUTATOR. (CASA NR 510001585)

All 81: https://openairdocs.org/engine/continental-io-550-f/reports.md

## STCs that may be installed (OpenAirDocs) (21)

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 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 SE0417CH](https://openairdocs.org/stc/SE0417CH): Turbo-normalization. Western Skyways Aircraft Modifications Inc
- [STC SE03415CH](https://openairdocs.org/stc/SE03415CH): The turbo-normalization of Continental Motors engine models IO-520-A, -F, -J, and -L, TSIO-520-C, -G, -H, -M, and -R, and IO-550-F and L for installation into Cessna 206, 207 & 210 aircraft. DERS Group Svc LLC
- [STC SE09637SC](https://openairdocs.org/stc/SE09637SC): Remove existing rocker arm assemblies and install modify rocker arm assemblies. General Aviation Modifications Inc
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists IO-550 Series
- [STC SE09846SC](https://openairdocs.org/stc/SE09846SC): Installation of S539800M30 starter adapter springs. Aircraft Specialties Services Inc
- [STC SE1688GL](https://openairdocs.org/stc/SE1688GL): Installation of a Shadin Company 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 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
- [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 SE09319SC](https://openairdocs.org/stc/SE09319SC): Modify oil pan adding a new oil sump drain. Texas Skyways Inc. Lists IO-550 Series
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation
- [STC SE09131SC](https://openairdocs.org/stc/SE09131SC): Removal of fuel injection system and induction system and installation of carburetor. Texas Skyways Inc
- [STC SE2509NM](https://openairdocs.org/stc/SE2509NM): Installation of an emergency fuel system. Mission Avn Fellowship

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