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 |
|---|---|---|---|---|---|---|
| N225SP | Beech S35 |
Fixed-wing, single engine | Gross Flying Service INC Larned, Kansas |
Standard | 2026-04-21 | ValidFAA registration status code V: Valid registration. All codes |
| N200WW | Piper PA-46-310P |
Fixed-wing, single engine | Roark LLC Bend, Oregon |
Standard | 2026-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N6093S | Beech V35B |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2026-04-20 | ValidFAA registration status code V: Valid registration. All codes |
| N4611E | Cessna A185F |
Fixed-wing, single engine | Co-owned owner Florida |
Standard | 2026-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N62BB | Beech 58 |
Fixed-wing, multi-engine | Up and Down Aviation LLC Perry, Georgia |
Standard | 2026-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N9226Q | Beech A36 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-04-18 | ValidFAA registration status code V: Valid registration. All codes |
| N71967 | Cessna U206D |
Fixed-wing, single engine | Lipan Creek Flying Service LLC Eola, Texas |
Standard | 2026-04-17 | ValidFAA registration status code V: Valid registration. All codes |
| N1015W | Beech E-55 |
Fixed-wing, multi-engine | Co-owned owner Texas |
Standard | 2026-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N168ED | Cessna 310R |
Fixed-wing, multi-engine | Tsg Aviation LLC Wyandotte, Michigan |
Standard | 2026-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N2020W | Beech V35 |
Fixed-wing, single engine | Midland Mist INC Midland, Georgia |
Standard | 2026-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N7908R | Beech E33A |
Fixed-wing, single engine | Doonair LLC Loomis, California |
Standard | 2026-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N99YF | Cessna U206C |
Fixed-wing, single engine | Aspire Partners LLC Evansville, Indiana |
Standard | 2026-04-11 | ValidFAA registration status code V: Valid registration. All codes |
| N50Z | Beech V35A |
Fixed-wing, single engine | Individual owner Nevada |
Standard | 2026-04-10 | ValidFAA registration status code V: Valid registration. All codes |
| N2349F | Cessna 210E |
Fixed-wing, single engine | Co-owned owner Illinois |
Standard | 2026-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N7373V | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner West Virginia |
Standard | 2026-04-09 | ValidFAA registration status code V: Valid registration. All codes |
| N100RE | Beech F33A |
Fixed-wing, single engine | Individual owner Pennsylvania |
Standard | 2026-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N326S | Beech V35A |
Fixed-wing, single engine | Individual owner Wyoming |
Standard | 2026-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N5847S | Beech S35 |
Fixed-wing, single engine | Standard | 2026-04-07 | ValidFAA registration status code V: Valid registration. All codes | |
| N773MS | Beech F33A |
Fixed-wing, single engine | Wild Blue Yonder LLC Lees Summit, Missouri |
Standard | 2026-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N821BT | Cessna 310R |
Fixed-wing, multi-engine | N821Bt Aviation LLC Dover, Delaware |
Standard | 2026-04-07 | ValidFAA registration status code V: Valid registration. All codes |
| N29130 | Cessna U206C |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2026-04-06 | ValidFAA registration status code V: Valid registration. All codes |
| N11KF | Beech 95-C55 |
Fixed-wing, multi-engine | Rebel Dawg Aviation LLC Vestavia Hills, Alabama |
Standard | 2026-04-05 | ValidFAA registration status code V: Valid registration. All codes |
| N1567P | Beech F33A |
Fixed-wing, single engine | My Family Holdings LLC Greenwood, South Carolina |
Standard | 2026-04-05 | ValidFAA registration status code V: Valid registration. All codes |
| N686MG | Cessna A185F |
Fixed-wing, single engine | Mike Golf Holdings LLC Pinellas Park, Florida |
Standard | 2026-04-05 | ValidFAA registration status code V: Valid registration. All codes |
| N3622T | Beech 58 |
Fixed-wing, multi-engine | Shaw Aviation LLC Greenleaf, Idaho |
Standard | 2026-04-04 | ValidFAA registration status code V: Valid registration. All codes |
| N695SU | Cessna 310R |
Fixed-wing, multi-engine | Alpha Whiskey 2 LLC Brandon, Mississippi |
Standard | 2026-04-04 | ValidFAA registration status code V: Valid registration. All codes |
| N338HP | Beech F33A |
Fixed-wing, single engine | N338Hp LLC Omaha, Nebraska |
Standard | 2026-04-03 | ValidFAA registration status code V: Valid registration. All codes |
| N4689C | Cessna A185F |
Fixed-wing, single engine | Aeropod INC Aurora, Colorado |
Standard | 2026-03-31 | ValidFAA registration status code V: Valid registration. All codes |
| N14762 | Bellanca 17-30A |
Fixed-wing, single engine | 51 Adventures LLC East Montpelier, Vermont |
Standard | 2026-03-30 | ValidFAA registration status code V: Valid registration. All codes |
| N4264J | Cessna 310R |
Fixed-wing, multi-engine | Individual owner New York |
Standard | 2026-03-30 | ValidFAA registration status code V: Valid registration. All codes |
| N479HB | Cessna U206F |
Fixed-wing, single engine | Double Bar Stationair LLC Coeur D Alene, Idaho |
Standard | 2026-03-30 | ValidFAA registration status code V: Valid registration. All codes |
| N1165T | Beech V35B |
Fixed-wing, single engine | Flying J Partners Asset Management LLC Casper, Wyoming |
Standard | 2026-03-27 | ValidFAA registration status code V: Valid registration. All codes |
| N11LA | Cessna 210H |
Fixed-wing, single engine | Two-Ten LLC Ramona, California |
Standard | 2026-03-25 | ValidFAA registration status code V: Valid registration. All codes |
| N230P | Cessna T210G |
Fixed-wing, single engine | Individual owner California |
Standard | 2026-03-25 | ValidFAA registration status code V: Valid registration. All codes |
| N30488 | Cessna 210L |
Fixed-wing, single engine | Valiair Lc Trustee Casper, Wyoming |
Standard | 2026-03-24 | ValidFAA registration status code V: Valid registration. All codes |
| N617PT | Beech 58 |
Fixed-wing, multi-engine | Smart Motion Aviation LLC Frisco, Texas |
Standard | 2026-03-24 | ValidFAA registration status code V: Valid registration. All codes |
| N6613A | Beech A36 |
Fixed-wing, single engine | Individual owner Tennessee |
Standard | 2026-03-24 | ValidFAA registration status code V: Valid registration. All codes |
| N6087S | Beech A36 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-03-21 | ValidFAA registration status code V: Valid registration. All codes |
| N69AK | Beech 36 |
Fixed-wing, single engine | Simple Dimple LLC Kalispell, Montana |
Standard | 2026-03-21 | ValidFAA registration status code V: Valid registration. All codes |
| N2123L | Beech A36 |
Fixed-wing, single engine | Panther Air LLC Alameda, California |
Standard | 2026-03-19 | ValidFAA registration status code V: Valid registration. All codes |
| N2015T | Beech F33A |
Fixed-wing, single engine | 2015T LLC Omaha, Nebraska |
Standard | 2026-03-18 | ValidFAA registration status code V: Valid registration. All codes |
| N3368S | Cessna 210J |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2026-03-18 | ValidFAA registration status code V: Valid registration. All codes |
| N703NC | Beech 58 |
Fixed-wing, multi-engine | Individual owner Michigan |
Standard | 2026-03-18 | ValidFAA registration status code V: Valid registration. All codes |
| N8237M | Cessna T210K |
Fixed-wing, single engine | Middle Tennessee State University Murfreesboro, Tennessee |
Standard | 2026-03-17 | ValidFAA registration status code V: Valid registration. All codes |
| N185RT | Cessna A185F |
Fixed-wing, single engine | Redwagon Transport LLC Spokane, Washington |
Standard | 2026-03-15 | ValidFAA registration status code V: Valid registration. All codes |
| N3741B | Beech A36 |
Fixed-wing, single engine | Cherokee Trail Aviation LLC Tontitown, Arkansas |
Standard | 2026-03-14 | ValidFAA registration status code V: Valid registration. All codes |
| N8285R | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-03-14 | ValidFAA registration status code V: Valid registration. All codes |
| N8754Z | Cessna P206D |
Fixed-wing, single engine | Bwana Z Transporation LLC Missoula, Montana |
Standard | 2026-03-14 | ValidFAA registration status code V: Valid registration. All codes |
| N2024V | Beech V35B |
Fixed-wing, single engine | Whiskey Tango Flyers INC Middletown, Delaware |
Standard | 2026-03-13 | ValidFAA registration status code V: Valid registration. All codes |
| N211SW | Cessna A185F |
Fixed-wing, single engine | Orion Aviation LLC Jeffersonville, Indiana |
Standard | 2026-03-13 | ValidFAA registration status code V: Valid registration. All codes |
| N2XS | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-03-13 | ValidFAA registration status code V: Valid registration. All codes |
| N3108N | Beech F33A |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2026-03-13 | ValidFAA registration status code V: Valid registration. All codes |
| N1979U | Cessna A185E |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2026-03-12 | ValidFAA registration status code V: Valid registration. All codes |
| N8288G | Cessna A188B |
Fixed-wing, single engine | Ford Flying Service INC Doerun, Georgia |
Restricted | 2026-03-12 | ValidFAA registration status code V: Valid registration. All codes |
| N991GJ | Cessna 310R |
Fixed-wing, multi-engine | Island Charter LLC Wilmington, Delaware |
Standard | 2026-03-12 | ValidFAA registration status code V: Valid registration. All codes |
| N1051V | Cessna U206F |
Fixed-wing, single engine | Co-owned owner Alaska |
Standard | 2026-03-11 | ValidFAA registration status code V: Valid registration. All codes |
| N756WJ | Cessna U206G |
Fixed-wing, single engine | Individual owner New York |
Standard | 2026-03-11 | ValidFAA registration status code V: Valid registration. All codes |
| N4280S | Beech V35B |
Fixed-wing, single engine | Individual owner Tennessee |
Standard | 2026-03-10 | ValidFAA registration status code V: Valid registration. All codes |
| N2525T | Navion NAVION H |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2026-03-06 | ValidFAA registration status code V: Valid registration. All codes |
| N625LM | Beech F33A |
Fixed-wing, single engine | Co-owned owner Kansas |
Standard | 2026-03-05 | ValidFAA registration status code V: Valid registration. All codes |
| N9AB | Beech V35B |
Fixed-wing, single engine | First Alarm Aviation LLC Fosters, Alabama |
Standard | 2026-03-05 | ValidFAA registration status code V: Valid registration. All codes |
| N2323A | Beech V35A |
Fixed-wing, single engine | Outdoorsmans Dream LLC Kalispell, Montana |
Standard | 2026-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N3882G | Cessna U206B |
Fixed-wing, single engine | Ranier Flight Service LLC Friday Harbor, Washington |
Standard | 2026-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N4548F | Cessna A185E |
Fixed-wing, single engine | Co-owned owner Alaska |
Standard | 2026-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N4716V | Bellanca 17-30 |
Fixed-wing, single engine | Individual owner Kentucky |
Standard | 2026-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N63026 | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-03-04 | ValidFAA registration status code V: Valid registration. All codes |
| N3491Q | Cessna 320E |
Fixed-wing, multi-engine | Outer Marker INC Sandy, Utah |
Standard | 2026-03-03 | ValidFAA registration status code V: Valid registration. All codes |
| N9747G | Cessna A188B |
Fixed-wing, single engine | Pavlu Aerial Spraying LLC Ness City, Kansas |
Restricted | 2026-03-03 | ValidFAA registration status code V: Valid registration. All codes |
| N758CA | Beech 58 |
Fixed-wing, multi-engine | Access Denied INC Wilmington, Delaware |
Standard | 2026-03-01 | ValidFAA registration status code V: Valid registration. All codes |
| N185HR | Cessna A185F |
Fixed-wing, single engine | Air Sprayers INC Two Buttes, Colorado |
Standard | 2026-02-28 | ValidFAA registration status code V: Valid registration. All codes |
| N4615S | Beech 58 |
Fixed-wing, multi-engine | Murrer Aviation INC Canonsburg, Pennsylvania |
Standard | 2026-02-28 | ValidFAA registration status code V: Valid registration. All codes |
| N4634M | Beech V35B |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2026-02-28 | ValidFAA registration status code V: Valid registration. All codes |
| N313W | Beech V35B |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2026-02-26 | ValidFAA registration status code V: Valid registration. All codes |
| N321RH | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner California |
Standard | 2026-02-26 | ValidFAA registration status code V: Valid registration. All codes |
| N512BD | Beech V35B |
Fixed-wing, single engine | Turbo Aviation LLC Chesterfield, South Carolina |
Standard | 2026-02-26 | ValidFAA registration status code V: Valid registration. All codes |
| N5582X | Beech F33A |
Fixed-wing, single engine | Alpe Holding LLC Van Nuys, California |
Standard | 2026-02-25 | ValidFAA registration status code V: Valid registration. All codes |
| N3951Y | Cessna 210D |
Fixed-wing, single engine | Individual owner Louisiana |
Standard | 2026-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N4186T | Cessna 320D |
Fixed-wing, multi-engine | Standard | 2026-02-23 | ValidFAA registration status code V: Valid registration. All codes | |
| N4854R | Cessna A188B |
Fixed-wing, single engine | Fisher AG Service LLC Cardington, Ohio |
Restricted | 2026-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N66DR | Beech 35-C33A |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N7226K | Beech F33A |
Fixed-wing, single engine | Agile Aviation LLC Hilliard, Ohio |
Standard | 2026-02-23 | ValidFAA registration status code V: Valid registration. All codes |
| N235SM | Beech 58 |
Fixed-wing, multi-engine | Triniair LLC Warner Robins, Georgia |
Standard | 2026-02-22 | ValidFAA registration status code V: Valid registration. All codes |
| N7336V | Bellanca 17-30 |
Fixed-wing, single engine | Individual owner Arkansas |
Standard | 2026-02-22 | ValidFAA registration status code V: Valid registration. All codes |
| N932DB | Cessna U206G |
Fixed-wing, single engine | Co-owned owner Wisconsin |
Standard | 2026-02-22 | ValidFAA registration status code V: Valid registration. All codes |
| N60X | Cessna A185F |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-21 | ValidFAA registration status code V: Valid registration. All codes |
| N7936R | Beech V35A |
Fixed-wing, single engine | Cloud Surfing LLC Missoula, Montana |
Standard | 2026-02-21 | ValidFAA registration status code V: Valid registration. All codes |
| N167JW | Beech V35A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-02-20 | ValidFAA registration status code V: Valid registration. All codes |
| N2532X | Cessna P206 |
Fixed-wing, single engine | Two River Airspray LLC Hallock, Minnesota |
Standard | 2026-02-20 | ValidFAA registration status code V: Valid registration. All codes |
| N7595Q | Cessna A185F |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N8006Z | Cessna U206 |
Fixed-wing, single engine | Mathews Vincent W Bryan, Texas |
Standard | 2026-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N993PP | Cessna U206F |
Fixed-wing, single engine | Cc Bar Ranch LLC Texarkana, Texas |
Standard | 2026-02-19 | ValidFAA registration status code V: Valid registration. All codes |
| N1077W | Beech A36 |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2026-02-18 | ValidFAA registration status code V: Valid registration. All codes |
| N78GG | Beech F33A |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-18 | ValidFAA registration status code V: Valid registration. All codes |
| N21CD | Beech 36 |
Fixed-wing, single engine | Two Two Lima LLC Port Orange, Florida |
Standard | 2026-02-17 | ValidFAA registration status code V: Valid registration. All codes |
| N3239Q | Cessna 401 |
Fixed-wing, multi-engine | 92Nd West Aviation INC Lonoke, Arkansas |
Standard | 2026-02-17 | ValidFAA registration status code V: Valid registration. All codes |
| N58CK | Beech 58 |
Fixed-wing, multi-engine | Majestic Fleet LLC Miami, Florida |
Standard | 2026-02-17 | ValidFAA registration status code V: Valid registration. All codes |
| N770T | Beech V35B |
Fixed-wing, single engine | Individual owner Virginia |
Standard | 2026-02-17 | ValidFAA registration status code V: Valid registration. All codes |
| N2160J | Cessna T188C |
Fixed-wing, single engine | Individual owner Montana |
Restricted | 2026-02-16 | ValidFAA registration status code V: Valid registration. All codes |
| N4842J | Beech 35-C33A |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2026-02-15 | ValidFAA registration status code V: Valid registration. All codes |
| N338H | Cessna A185F |
Fixed-wing, single engine | Capital Holdings Fund IV LLC Boca Raton, Florida |
Standard | 2026-02-14 | 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.