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 |
|---|---|---|---|---|---|---|
| N34LW | Beech T-34B |
Fixed-wing, single engine | Anderson Glenn L Sandia Park, New Mexico |
Standard | 2026-10-05 | ValidFAA registration status code V: Valid registration. All codes |
| N121RW | Beech F33A |
Fixed-wing, single engine | Arbuckle Air LLC Kansas City, Missouri |
Standard | 2026-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N1550D | Beech F33A |
Fixed-wing, single engine | Alexander Air Consulting LLC Lees Summit, Missouri |
Standard | 2026-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N17509 | Beech A36 |
Fixed-wing, single engine | Co-owned owner Florida |
Standard | 2026-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N714QK | Cessna A185F |
Fixed-wing, single engine | Individual owner Texas |
Restricted | 2026-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N206SP | Cessna P206 |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2026-10-01 | ValidFAA registration status code V: Valid registration. All codes |
| N606PB | Cessna A185F |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2026-10-01 | ValidFAA registration status code V: Valid registration. All codes |
| N2787T | Beech 95-C55 |
Fixed-wing, multi-engine | Bombero Aviation LLC Childress, Texas |
Standard | 2026-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N400K | Cessna A185F |
Fixed-wing, single engine | Clydesdale Asset Management LLC Park City, Utah |
Standard | 2026-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N400V | Beech V35B |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N4366W | Beech V35B |
Fixed-wing, single engine | Co-owned owner Oregon |
Standard | 2026-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N7922K | Beech S35 |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2026-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N92RW | Beech F33A |
Fixed-wing, single engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2026-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N9393Q | Beech F33A |
Fixed-wing, single engine | D5167 LLC Kalispell, Montana |
Standard | 2026-09-28 | ValidFAA registration status code V: Valid registration. All codes |
| N2044V | Beech A36 |
Fixed-wing, single engine | Performance Construction LLC Paris, Texas |
Standard | 2026-09-27 | ValidFAA registration status code V: Valid registration. All codes |
| N504Q | Cessna U206D |
Fixed-wing, single engine | Chelatna Lake Lodge LLC Anchorage, Alaska |
Standard | 2026-09-27 | ValidFAA registration status code V: Valid registration. All codes |
| N58HC | Beech 58 |
Fixed-wing, multi-engine | Medina Sky LLC Medina, Ohio |
Standard | 2026-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N7433N | Cessna U206G |
Fixed-wing, single engine | Fixed Gear LLC Sherwood, Arkansas |
Standard | 2026-09-25 | ValidFAA registration status code V: Valid registration. All codes |
| N1880L | Beech V35B |
Fixed-wing, single engine | South Regional Aviation Enterprise Boynton Beach, Florida |
Standard | 2026-09-24 | ValidFAA registration status code V: Valid registration. All codes |
| N254S | Cessna 210L |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2026-09-24 | ValidFAA registration status code V: Valid registration. All codes |
| N104LA | Beech F33A |
Fixed-wing, single engine | Withheld at owner's request | Standard | 2026-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N222XL | Cessna A185F |
Fixed-wing, single engine | Individual owner Wisconsin |
Standard | 2026-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N2999M | Beech F33A |
Fixed-wing, single engine | Individual owner California |
Standard | 2026-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N7385R | Beech 58 |
Fixed-wing, multi-engine | Cw Aircraft LLC Atlanta, Georgia |
Standard | 2026-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N87461 | Cessna 310R |
Fixed-wing, multi-engine | Cya Aviation LLC Gainesville, Florida |
Standard | 2026-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N500GE | Beech A36 |
Fixed-wing, single engine | Stevenson Anesthesia Associates PC Wolfforth, Texas |
Standard | 2026-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N5852F | Cessna 210G |
Fixed-wing, single engine | Alvidrez Investments Group INC Lakewood, California |
Standard | 2026-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N66840 | Beech A36 |
Fixed-wing, single engine | Lowery Aviation LLC Burwell, Nebraska |
Standard | 2026-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N8601Z | Cessna P206B |
Fixed-wing, single engine | Magnolia Springs Properties INC Kirbyville, Texas |
Standard | 2026-09-21 | ValidFAA registration status code V: Valid registration. All codes |
| N1693W | Beech V35B |
Fixed-wing, single engine | Antique Endeavors LLC Missoula, Montana |
Standard | 2026-09-19 | ValidFAA registration status code V: Valid registration. All codes |
| N4158B | Bellanca 17-30A |
Fixed-wing, single engine | Capristo Construction Cape Coral, Florida |
Standard | 2026-09-19 | ValidFAA registration status code V: Valid registration. All codes |
| N155WC | Beech E-55 |
Fixed-wing, multi-engine | Tca Equities LLC Advance, North Carolina |
Standard | 2026-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N9022V | Beech A36 |
Fixed-wing, single engine | Blu Dog Aviation LLC Greenwich, New York |
Standard | 2026-09-17 | ValidFAA registration status code V: Valid registration. All codes |
| N137TW | Beech V35B |
Fixed-wing, single engine | Individual owner Maryland |
Standard | 2026-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N221AB | Beech V35A |
Fixed-wing, single engine | Flying Banana LLC Onsted, Michigan |
Standard | 2026-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N300PJ | Calloway SENIOR AERO SPORT |
Fixed-wing, single engine | Legacy of Speed LLC Warsaw, Indiana |
Experimental | 2026-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N7208R | Beech V35B |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2026-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N1860A | Beech A36 |
Fixed-wing, single engine | Ary CO Ac & Heat LLC Decatur, Texas |
Standard | 2026-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N8924M | Beech S35 |
Fixed-wing, single engine | Tre Aviation CORP Wilmington, Delaware |
Standard | 2026-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N5451V | Cessna 210L |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2026-09-14 | ValidFAA registration status code V: Valid registration. All codes |
| N8600Q | Beech S35 |
Fixed-wing, single engine | Individual owner Louisiana |
Standard | 2026-09-14 | ValidFAA registration status code V: Valid registration. All codes |
| N206F | Cessna U206F |
Fixed-wing, single engine | Moreau Aviation LLC Wasilla, Alaska |
Restricted | 2026-09-12 | ValidFAA registration status code V: Valid registration. All codes |
| N6640L | Beech V35B |
Fixed-wing, single engine | Individual owner New Mexico |
Standard | 2026-09-12 | ValidFAA registration status code V: Valid registration. All codes |
| N781LD | Beech V35B |
Fixed-wing, single engine | Individual owner New York |
Standard | 2026-09-12 | ValidFAA registration status code V: Valid registration. All codes |
| N3753Y | Cessna 210D |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2026-09-11 | ValidFAA registration status code V: Valid registration. All codes |
| N1618M | Cessna A185E |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2026-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N22TG | Cessna 210M |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2026-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N3844Y | Cessna 210D |
Fixed-wing, single engine | Co-owned owner Georgia |
Standard | 2026-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N4485S | Beech V35B |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2026-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N488FD | Beech V35A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N6PD | Cessna 210M |
Fixed-wing, single engine | Individual owner Arkansas |
Standard | 2026-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N7092T | Beech 58 |
Fixed-wing, multi-engine | Hidden Valley Aviation LLC Denton, Texas |
Standard | 2026-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N9105S | Beech F33A |
Fixed-wing, single engine | Co-owned owner Arizona |
Standard | 2026-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N949BG | Beech A36 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2026-09-09 | ValidFAA registration status code V: Valid registration. All codes |
| N317SC | Beech V35A |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2026-09-08 | ValidFAA registration status code V: Valid registration. All codes |
| N2036Z | Beech A36 |
Fixed-wing, single engine | Crescent Cross Aviation LLC Ismay, Montana |
Standard | 2026-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N8123G | Cessna U206G |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2026-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N8400Q | Cessna A185F |
Fixed-wing, single engine | Spillman Aviation LLC Colorado Springs, Colorado |
Standard | 2026-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N93229 | Cessna A185F |
Fixed-wing, single engine | Back Country Club LLC Crawford, Texas |
Standard | 2026-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N93547 | Bellanca 17-30A |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2026-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N9811Z | Cessna 206 |
Fixed-wing, single engine | Black Hawk Brothers LLC Lakeland, Florida |
Standard | 2026-09-07 | ValidFAA registration status code V: Valid registration. All codes |
| N185JN | Cessna A185F |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2026-09-05 | ValidFAA registration status code V: Valid registration. All codes |
| N2641Z | Cessna 310R |
Fixed-wing, multi-engine | Tfs Air LLC Loveland, Colorado |
Standard | 2026-09-05 | ValidFAA registration status code V: Valid registration. All codes |
| N707WL | Beech 58 |
Fixed-wing, multi-engine | Flight Solutions LLC Chesterfield, Missouri |
Standard | 2026-09-05 | ValidFAA registration status code V: Valid registration. All codes |
| N9939Z | Cessna U206G |
Fixed-wing, single engine | River Front Akn LLC Anchorage, Alaska |
Standard | 2026-09-05 | ValidFAA registration status code V: Valid registration. All codes |
| N3772Q | Beech V35 |
Fixed-wing, single engine | Boav8R LLC Marana, Arizona |
Standard | 2026-09-03 | ValidFAA registration status code V: Valid registration. All codes |
| N185JW | Cessna A185F |
Fixed-wing, single engine | 5Jw LLC Sheridan, Wyoming |
Multiple | 2026-09-02 | ValidFAA registration status code V: Valid registration. All codes |
| N6023Q | Beech A36 |
Fixed-wing, single engine | Cr Mcdowell Construction CO INC Keokuk, Iowa |
Standard | 2026-09-02 | ValidFAA registration status code V: Valid registration. All codes |
| N9006V | Beech V35B |
Fixed-wing, single engine | Buckholts Texas LLC Buckholts, Texas |
Standard | 2026-09-02 | ValidFAA registration status code V: Valid registration. All codes |
| N1985C | Beech S35 |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2026-09-01 | ValidFAA registration status code V: Valid registration. All codes |
| N36363 | Beech V35B |
Fixed-wing, single engine | Individual owner California |
Standard | 2026-09-01 | ValidFAA registration status code V: Valid registration. All codes |
| N4799V | Bellanca 17-30 |
Fixed-wing, single engine | Departure Aviation Services LLC Laurel Hill, North Carolina |
Standard | 2026-09-01 | ValidFAA registration status code V: Valid registration. All codes |
| N62JR | Beech F33A |
Fixed-wing, single engine | N62Jr LLC Lakeside, Montana |
Standard | 2026-09-01 | ValidFAA registration status code V: Valid registration. All codes |
| N9947G | Cessna A188A |
Fixed-wing, single engine | Arthur Aviation LLC Arthur, North Dakota |
Multiple | 2026-09-01 | ValidFAA registration status code V: Valid registration. All codes |
| N22CB | Cessna A185F |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2026-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N8241R | Bellanca 17-30A |
Fixed-wing, single engine | Okie Flyers LLC Norman, Oklahoma |
Standard | 2026-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N25675 | Beech A36 |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2026-08-29 | ValidFAA registration status code V: Valid registration. All codes |
| N3028W | Beech A36 |
Fixed-wing, single engine | K2 Aviation LLC Carroll, Iowa |
Standard | 2026-08-29 | ValidFAA registration status code V: Valid registration. All codes |
| N625S | Beech E-55 |
Fixed-wing, multi-engine | Individual owner Tennessee |
Standard | 2026-08-29 | ValidFAA registration status code V: Valid registration. All codes |
| N1803X | Beech A36 |
Fixed-wing, single engine | Trtt Investments LLC Tahlequah, Oklahoma |
Standard | 2026-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N18760 | Beech V35B |
Fixed-wing, single engine | Twinfin LLC Port Orange, Florida |
Standard | 2026-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N28073 | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Nebraska |
Standard | 2026-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N1475F | Cessna A185F |
Fixed-wing, single engine | Ac Group LLC Helena, Montana |
Standard | 2026-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N1800F | Cessna 210E |
Fixed-wing, single engine | Individual owner Idaho |
Standard | 2026-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N34NC | Cessna A185F |
Fixed-wing, single engine | Spencer Coastal Air LLC Ellsworth, Maine |
Standard | 2026-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N6199F | Cessna 210J |
Fixed-wing, single engine | Acara Aviation LLC Portage, Michigan |
Standard | 2026-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N7802R | Beech V35A |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2026-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N7837R | Beech D55 |
Fixed-wing, multi-engine | Eob Aviation LLC Grand Haven, Michigan |
Standard | 2026-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N8451Q | Cessna U206F |
Fixed-wing, single engine | Runway Three Aviation LLC Kalispell, Montana |
Standard | 2026-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N121LL | Cessna U206G |
Fixed-wing, single engine | Wild Blue Air LLC Homer, Alaska |
Standard | 2026-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N1825S | Beech A36 |
Fixed-wing, single engine | Individual owner Indiana |
Standard | 2026-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N185 | Cessna A185F |
Fixed-wing, single engine | Individual owner Nevada |
Standard | 2026-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N2592X | Cessna P206 |
Fixed-wing, single engine | Lorraines Blue Sky Aviation LLC Norman, Oklahoma |
Standard | 2026-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N301CT | Beech 58 |
Fixed-wing, multi-engine | Vatm Sky Investments LLC Thomson, Georgia |
Standard | 2026-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N43DB | Beech D55 |
Fixed-wing, multi-engine | Individual owner Georgia |
Standard | 2026-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N185ME | Cessna A185F |
Fixed-wing, single engine | Strength LLC Brandon, Mississippi |
Standard | 2026-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N761KD | Cessna 210M |
Fixed-wing, single engine | Galaxy Aviation LLC Nantucket, Massachusetts |
Standard | 2026-08-20 | ValidFAA registration status code V: Valid registration. All codes |
| N756XY | Cessna U206G |
Fixed-wing, single engine | Arizona Air Salvage Phoenix, Arizona |
Standard | 2026-08-19 | ValidFAA registration status code V: Valid registration. All codes |
| N982SF | Cessna P206E |
Fixed-wing, single engine | Co-owned owner Washington |
Multiple | 2026-08-19 | ValidFAA registration status code V: Valid registration. All codes |
| N5105J | Cessna 310R |
Fixed-wing, multi-engine | Individual owner California |
Standard | 2026-08-18 | ValidFAA registration status code V: Valid registration. All codes |
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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.