Continental IO-520 series
9,484 aircraft on the U.S. register carry a Continental IO-520 series engine, rated at about 285 horsepower. The Beechcraft V35 Bonanza is the model most often fitted with it (1,496 aircraft). The aircraft carrying it were built between 1963 and 2017.
The FAA records engines by code, usually at the level of a series ("O-320 series") rather than the exact variant; this page gathers every FAA code that reads as Continental IO-520 series. FAA spelling: IO 520 SERIES.
Fitted to model families
Beechcraft V35 Bonanza1,496Beechcraft A36 Bonanza1,145Cessna A185 Skywagon1,143Beechcraft F33 Bonanza872Cessna 210 Centurion767Cessna U206 Stationair641Beechcraft 58 Baron466Bellanca 17 Viking456Beechcraft S35 Bonanza439Cessna 310303Cessna A188230Beechcraft E-55193
Beechcraft V35 Bonanza · Beechcraft A36 Bonanza · Cessna A185 Skywagon · Beechcraft F33 Bonanza · Cessna 210 Centurion · Cessna U206 Stationair · Beechcraft 58 Baron · Bellanca 17 Viking · Beechcraft S35 Bonanza · Cessna 310
Where they are owner's state
Texas1,046California792Alaska673Florida566Delaware326Arizona312Montana276Washington274Colorado265Georgia250
Kind of aircraft
Piston singles7,845 (83%)Piston twins1,371 (14%)Turboprops268 (3%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Continental IO-520 series the component layer
No FAA order in the current files names this engine series. Operators and repair shops have filed 465 failure reports with the FAA since 1995, 26 of them in the last ten years.
Failure reports 465 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Cylinder26Cylinder Head25Relay20Hub14Circuit Breaker13Antenna12Line12Bolt10Bracket9Control Cable9
Latest reports
2024-04-06Engine: power loss
2024-04-06Engine: power loss
2022-01-21None: none
2020-07-10Rod: broken
2020-01-15Turnbuckle: corroded
Sources: the FAA's type certificate data sheets, airworthiness directives, supplemental type certificates, special conditions and special airworthiness information bulletins (Dynamic Regulatory System), and the FAA's service difficulty reports. A failure report is what an operator or repair station chose to file; the counts show reporting as much as reliability, and larger and commercial fleets report more. How the systems are grouped.
Connections how this engine series links to the rest of the register
Fitted to
- Beechcraft V35 Bonanza 1,496 with this engine series
- Beechcraft A36 Bonanza 1,145 with this engine series
- Cessna A185 Skywagon 1,143 with this engine series
- Beechcraft F33 Bonanza 872 with this engine series
- Cessna 210 Centurion 767 with this engine series
- Cessna U206 Stationair 641 with this engine series
- Beechcraft 58 Baron 466 with this engine series
- Bellanca 17 Viking 456 with this engine series
Where they are
- Texas 1,046 of these aircraft
- California 792 of these aircraft
- Alaska 673 of these aircraft
- Florida 566 of these aircraft
- Delaware 326 of these aircraft
Biggest operators
- Bas Part Sales LLC 27 of these aircraft
- Southern Aircraft Consultancy INC Trustee 12 of these aircraft
- Gta Air INC 12 of these aircraft
- International Air Services INC Trustee 11 of these aircraft
- United States Department Of Interior 10 of these aircraft
Airworthiness
- Failure reports on the Continental IO-520 series 465 reports since 1995
Analytics
These connections as data: /graph/engine/continental-io-520-series.json · about the eFlight graph.
Aircraft newest certificates first · 9,484
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N90TM | Beech V35B |
Fixed-wing, single engine | J&W Aviation LLC Taylor, Nebraska |
Standard | 2026-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N1054W | Beech 58 |
Fixed-wing, multi-engine | Co-owned owner California |
Experimental | 2026-06-18 | ValidFAA registration status code V: Valid registration. All codes |
| N303CT | Cessna 210M |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2026-06-18 | ValidFAA registration status code V: Valid registration. All codes |
| N29V | Beech V35B |
Fixed-wing, single engine | Withheld at owner's request | Standard | 2026-06-17 | ValidFAA registration status code V: Valid registration. All codes |
| N66514 | Beech A36 |
Fixed-wing, single engine | Vintage Aviation Medical Associates LLC Wilmington, Delaware |
Standard | 2026-06-16 | ValidFAA registration status code V: Valid registration. All codes |
| N29110 | Cessna U206C |
Fixed-wing, single engine | Sutton Aircraft Salvage LLC Palmer, Alaska |
Standard | 2026-06-15 | ValidFAA registration status code V: Valid registration. All codes |
| N3308S | Cessna A185F |
Fixed-wing, single engine | Sutton Aircraft Salvage LLC Palmer, Alaska |
Standard | 2026-06-15 | ValidFAA registration status code V: Valid registration. All codes |
| N400DM | Beech A36 |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2026-06-14 | ValidFAA registration status code V: Valid registration. All codes |
| N35VS | Beech V35 |
Fixed-wing, single engine | Rcp3 Enterprises LLC Chesterfield, Missouri |
Standard | 2026-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N61516 | Cessna A185F |
Fixed-wing, single engine | Zaikof Bay LLC Jackson, Wyoming |
Standard | 2026-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N8127L | Cessna 210L |
Fixed-wing, single engine | 2F Trade LLC Gainesville, Texas |
Standard | 2026-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N811EC | Cessna 210L |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2026-06-11 | ValidFAA registration status code V: Valid registration. All codes |
| N196TC | Cessna 310R |
Fixed-wing, multi-engine | Individual owner Wisconsin |
Standard | 2026-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N6808S | Beech V35B |
Fixed-wing, single engine | Klw Flight Management LLC Booneville, Mississippi |
Standard | 2026-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N2181F | Cessna U206 |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2026-06-09 | ValidFAA registration status code V: Valid registration. All codes |
| N379JT | Cessna A185F |
Fixed-wing, single engine | N379Jt LLC Spokane, Washington |
Restricted | 2026-06-09 | ValidFAA registration status code V: Valid registration. All codes |
| N185HP | Beech A36 |
Fixed-wing, single engine | 185Hp LLC Sioux Falls, South Dakota |
Standard | 2026-06-07 | ValidFAA registration status code V: Valid registration. All codes |
| N4449Y | Beech A36 |
Fixed-wing, single engine | Tx Waste Ventures LLC Caddo Mills, Texas |
Standard | 2026-06-05 | ValidFAA registration status code V: Valid registration. All codes |
| N3100B | Beech F33A |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2026-06-04 | ValidFAA registration status code V: Valid registration. All codes |
| N4151S | Beech V35B |
Fixed-wing, single engine | Midland Avionics LLC Louisville, Kentucky |
Standard | 2026-06-04 | ValidFAA registration status code V: Valid registration. All codes |
| N608EB | Beech A36 |
Fixed-wing, single engine | Pinnacle Roof Solutions LLC New Baden, Illinois |
Standard | 2026-06-04 | ValidFAA registration status code V: Valid registration. All codes |
| N450TH | Beech 58 |
Fixed-wing, multi-engine | Hk Air LLC Byron, Georgia |
Standard | 2026-06-03 | ValidFAA registration status code V: Valid registration. All codes |
| N6127F | Cessna 210H |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2026-06-03 | ValidFAA registration status code V: Valid registration. All codes |
| N2988T | Aero Commander 200D |
Fixed-wing, single engine | Swiftmeyers LLC Benton Harbor, Michigan |
Standard | 2026-06-02 | ValidFAA registration status code V: Valid registration. All codes |
| N70326 | Cessna A188B |
Fixed-wing, single engine | Triple e Farms LLC Peculiar, Missouri |
Restricted | 2026-06-02 | ValidFAA registration status code V: Valid registration. All codes |
| N827W | Beech V35A |
Fixed-wing, single engine | Custom Air INC Roe, Arkansas |
Standard | 2026-06-02 | ValidFAA registration status code V: Valid registration. All codes |
| N169PG | Cessna T210J |
Fixed-wing, single engine | Individual owner Colorado |
Standard | 2026-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N206XL | Cessna U206F |
Fixed-wing, single engine | Individual owner Tennessee |
Standard | 2026-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N4336M | Cessna A188B |
Fixed-wing, single engine | Souther Field Aviation INC Americus, Georgia |
Restricted | 2026-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N70506 | Cessna U206F |
Fixed-wing, single engine | Individual owner New York |
Standard | 2026-06-01 | ValidFAA registration status code V: Valid registration. All codes |
| N35TP | Beech V35B |
Fixed-wing, single engine | Co-owned owner Missouri |
Standard | 2026-05-31 | ValidFAA registration status code V: Valid registration. All codes |
| N648JR | Beech A36 |
Fixed-wing, single engine | Streamline Aviation LLC Henderson, Nevada |
Standard | 2026-05-31 | ValidFAA registration status code V: Valid registration. All codes |
| N230DD | Beech F33A |
Fixed-wing, single engine | Strobe 33 LLC Houston, Texas |
Standard | 2026-05-30 | ValidFAA registration status code V: Valid registration. All codes |
| N94266 | Cessna A185F |
Fixed-wing, single engine | Individual owner Alaska |
Multiple | 2026-05-29 | ValidFAA registration status code V: Valid registration. All codes |
| N85SN | Cessna A185E |
Fixed-wing, single engine | Sn INC Seattle, Washington |
Standard | 2026-05-28 | ValidFAA registration status code V: Valid registration. All codes |
| N1DJ | Beech F33A |
Fixed-wing, single engine | Owyhee Air LLC Murphy, Idaho |
Standard | 2026-05-27 | ValidFAA registration status code V: Valid registration. All codes |
| N4738M | Beech A36 |
Fixed-wing, single engine | Individual owner Indiana |
Standard | 2026-05-27 | ValidFAA registration status code V: Valid registration. All codes |
| N9718E | Bellanca 17-30A |
Fixed-wing, single engine | Co-owned owner Oklahoma |
Standard | 2026-05-26 | ValidFAA registration status code V: Valid registration. All codes |
| N145JM | Beech V35B |
Fixed-wing, single engine | A&K Aviation LLC Lambertville, Michigan |
Standard | 2026-05-24 | ValidFAA registration status code V: Valid registration. All codes |
| N2285L | Beech A36 |
Fixed-wing, single engine | N2285L Aviation LLC Robbinsville, New Jersey |
Standard | 2026-05-23 | ValidFAA registration status code V: Valid registration. All codes |
| N74JW | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2026-05-22 | ValidFAA registration status code V: Valid registration. All codes |
| N9140Q | Beech V35B |
Fixed-wing, single engine | Tonka Seaplanes LLC Minnetonka, Minnesota |
Standard | 2026-05-22 | ValidFAA registration status code V: Valid registration. All codes |
| N114WR | Beech V35B |
Fixed-wing, single engine | Estes Aviation LLC Vicksburg, Mississippi |
Standard | 2026-05-19 | ValidFAA registration status code V: Valid registration. All codes |
| N8082R | Beech 36 |
Fixed-wing, single engine | J M Rowland Aviation LLC Eastman, Georgia |
Standard | 2026-05-19 | ValidFAA registration status code V: Valid registration. All codes |
| N224DL | Beech 36 |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2026-05-18 | ValidFAA registration status code V: Valid registration. All codes |
| N3077H | Beech F33A |
Fixed-wing, single engine | Air Frame Worx LLC Wilmington, Delaware |
Standard | 2026-05-17 | ValidFAA registration status code V: Valid registration. All codes |
| N137D | Cessna 310R |
Fixed-wing, multi-engine | Miller Aviation LLC DBA Huntington, Indiana |
Standard | 2026-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N21SH | Beech V35 |
Fixed-wing, single engine | Flight Less LLC Helena, Montana |
Standard | 2026-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N3733Y | Cessna 210D |
Fixed-wing, single engine | Co-owned owner Mississippi |
Standard | 2026-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N4890Q | Cessna A188B |
Fixed-wing, single engine | New Frontier Aviation LLC Fort Benton, Montana |
Experimental | 2026-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N731FM | Cessna A188B |
Fixed-wing, single engine | New Frontier Aviation LLC Fort Benton, Montana |
Restricted | 2026-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N2315F | Cessna 210E |
Fixed-wing, single engine | Red Rock Aircraft Leasing LLC Hurricane, Utah |
Standard | 2026-05-15 | ValidFAA registration status code V: Valid registration. All codes |
| N37KB | Beech V35 |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2026-05-14 | ValidFAA registration status code V: Valid registration. All codes |
| N4852J | Beech V35 |
Fixed-wing, single engine | Individual owner Colorado |
Standard | 2026-05-14 | ValidFAA registration status code V: Valid registration. All codes |
| N1050T | Beech A36 |
Fixed-wing, single engine | Individual owner Kansas |
Standard | 2026-05-13 | ValidFAA registration status code V: Valid registration. All codes |
| N7JZ | Cessna 210M |
Fixed-wing, single engine | R & R Vehicles LLC Davie, Florida |
Standard | 2026-05-13 | ValidFAA registration status code V: Valid registration. All codes |
| N919R | Cessna 210H |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2026-05-12 | ValidFAA registration status code V: Valid registration. All codes |
| N14LR | Beech A36 |
Fixed-wing, single engine | Co-owned owner Louisiana |
Standard | 2026-05-11 | ValidFAA registration status code V: Valid registration. All codes |
| N3436A | Beech E-55 |
Fixed-wing, multi-engine | Standard | 2026-05-11 | ValidFAA registration status code V: Valid registration. All codes | |
| N4534F | Cessna A185E |
Fixed-wing, single engine | Individual owner Colorado |
Standard | 2026-05-11 | ValidFAA registration status code V: Valid registration. All codes |
| N65AJ | Beech V35 |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2026-05-11 | ValidFAA registration status code V: Valid registration. All codes |
| N1891W | Beech A36 |
Fixed-wing, single engine | Individual owner Colorado |
Standard | 2026-05-10 | ValidFAA registration status code V: Valid registration. All codes |
| N5800M | Cessna T-310P |
Fixed-wing, multi-engine | Ridgewood Associates INC Nevada City, California |
Standard | 2026-05-10 | ValidFAA registration status code V: Valid registration. All codes |
| N101WE | Beech V35B |
Fixed-wing, single engine | Badgerland Aero LLC Las Vegas, Nevada |
Standard | 2026-05-09 | ValidFAA registration status code V: Valid registration. All codes |
| N173Q | Beech S35 |
Fixed-wing, single engine | Co-owned owner Arkansas |
Standard | 2026-05-09 | ValidFAA registration status code V: Valid registration. All codes |
| N6600C | Beech F33A |
Fixed-wing, single engine | Midwest Aviation INC Mayfield, Kentucky |
Standard | 2026-05-09 | ValidFAA registration status code V: Valid registration. All codes |
| N95DM | Cessna A185F |
Fixed-wing, single engine | Individual owner Maine |
Standard | 2026-05-09 | ValidFAA registration status code V: Valid registration. All codes |
| N118RS | Cessna T210L |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2026-05-08 | ValidFAA registration status code V: Valid registration. All codes |
| N156KC | Cessna A185F |
Fixed-wing, single engine | Whitney Aviation LLC Derry, New Hampshire |
Standard | 2026-05-08 | ValidFAA registration status code V: Valid registration. All codes |
| N36MZ | Beech V35 |
Fixed-wing, single engine | Individual owner Wisconsin |
Standard | 2026-05-07 | ValidFAA registration status code V: Valid registration. All codes |
| N4062A | Cessna 310R |
Fixed-wing, multi-engine | Cessna 310N4062A LLC Tuscaloosa, Alabama |
Standard | 2026-05-07 | ValidFAA registration status code V: Valid registration. All codes |
| N44CF | Cessna 210L |
Fixed-wing, single engine | Fly Low Aviation LLC Smithville, Mississippi |
Standard | 2026-05-07 | ValidFAA registration status code V: Valid registration. All codes |
| N707BR | Beech V35 |
Fixed-wing, single engine | Individual owner South Carolina |
Standard | 2026-05-06 | ValidFAA registration status code V: Valid registration. All codes |
| N124UA | Cessna A185F |
Fixed-wing, single engine | Co-owned owner Alaska |
Restricted | 2026-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N12PW | Cessna 210L |
Fixed-wing, single engine | Ohio State University College of Engineering Columbus, Ohio |
Standard | 2026-05-05 | ValidFAA registration status code V: Valid registration. All codes |
| N258NC | Beech 58 |
Fixed-wing, multi-engine | Fidelis Flight Group INC Elm Springs, Arkansas |
Standard | 2026-05-03 | ValidFAA registration status code V: Valid registration. All codes |
| N4201B | Bellanca 17-30A |
Fixed-wing, single engine | Nrnc LLC Camden, Delaware |
Standard | 2026-05-03 | ValidFAA registration status code V: Valid registration. All codes |
| N612MA | Beech 58 |
Fixed-wing, multi-engine | Andraos Aviation Solutions LLC Northville, Michigan |
Standard | 2026-05-03 | ValidFAA registration status code V: Valid registration. All codes |
| N2990T | Aero Commander 200D |
Fixed-wing, single engine | Individual owner California |
Standard | 2026-05-02 | ValidFAA registration status code V: Valid registration. All codes |
| N2821Q | Cessna A185F |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2026-05-01 | ValidFAA registration status code V: Valid registration. All codes |
| N486HP | Beech F33A |
Fixed-wing, single engine | Slipstream Aviation LLC La Crosse, Wisconsin |
Standard | 2026-05-01 | ValidFAA registration status code V: Valid registration. All codes |
| N2085L | Beech V35B |
Fixed-wing, single engine | Fly More Drive Less LLC Hot Springs, Arkansas |
Standard | 2026-04-30 | ValidFAA registration status code V: Valid registration. All codes |
| N2307F | Cessna 210D |
Fixed-wing, single engine | Individual owner Alabama |
Standard | 2026-04-30 | ValidFAA registration status code V: Valid registration. All codes |
| N77RG | Cessna 310R |
Fixed-wing, multi-engine | N77Rg LLC Amarillo, Texas |
Standard | 2026-04-30 | ValidFAA registration status code V: Valid registration. All codes |
| N1417B | Beech V35 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N500JL | Beech F33A |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2026-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N74LE | Beech F33A |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2026-04-29 | ValidFAA registration status code V: Valid registration. All codes |
| N9042S | Beech S35 |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2026-04-28 | ValidFAA registration status code V: Valid registration. All codes |
| N9700Z | Cessna U206G |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2026-04-28 | ValidFAA registration status code V: Valid registration. All codes |
| N617JM | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-04-27 | ValidFAA registration status code V: Valid registration. All codes |
| N584SM | Beech 58 |
Fixed-wing, multi-engine | Withheld at owner's request | Standard | 2026-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N8736Q | Cessna U206F |
Fixed-wing, single engine | Courtney Aviation LLC Columbia, California |
Standard | 2026-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N924CT | Beech F33A |
Fixed-wing, single engine | Go South LLC Ruleville, Mississippi |
Standard | 2026-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N2798T | Beech V35 |
Fixed-wing, single engine | Patriot Aviation Logistics LLC Lewes, Delaware |
Standard | 2026-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N305T | Beech E-55 |
Fixed-wing, multi-engine | Cjn Enterprises LLC Elbert, Colorado |
Standard | 2026-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N3364A | Beech E33A |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2026-04-24 | ValidFAA registration status code V: Valid registration. All codes |
| N190Q | Beech S35 |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2026-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N924KG | Beech A36 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-04-23 | ValidFAA registration status code V: Valid registration. All codes |
| N28127 | Bellanca 17-30A |
Fixed-wing, single engine | Ultimate Derby LLC Celina, Texas |
Standard | 2026-04-22 | ValidFAA registration status code V: Valid registration. All codes |
| N2863W | Beech F33A |
Fixed-wing, single engine | Warrick Motors LLC Newton, Iowa |
Standard | 2026-04-22 | ValidFAA registration status code V: Valid registration. All codes |
Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.