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
The design is held under 1 type certificate (E5CE, held by Continental Aerospace Technologies, INC.). The FAA has issued 30 airworthiness directives (orders that owners must comply with) that name 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.
FAA orders 30 airworthiness directives · newest first
2023-10-262023-17-04 · Reciprocating Engine Oil System · engine
2023-03-152023-05-16 · Reciprocating Engine Power Section · engine
2023-02-232023-04-08 · Reciprocating Engine Power Section · engine
2023-02-172023-02-12 · Engine Air Intake System · engine
2022-08-152022-16-03 · Engine (RECIPROCATING) · engine
2022-03-292022-04-04 · Reciprocating Engine Oil System · engine
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
Certificates and bulletins
E5CEType certificate held by Continental Aerospace Technologies, INC. · 18 models listed · revised March 8, 2022
Safety bulletins 11 · advice, not orders
2020-04-06NE-20-05 · POWERPLANT - Engine Camshaft Gear Tooth Fracture
2018-06-20NE-18-16 · POWERPLANT Alternator Drive Coupling
2017-05-10NE-17-11 · POWERPLANT Engine damage as a result of kickback
2016-03-08NE-16-13 · Powerplant - Prohibited use of sealant
2013-02-08NE-13-15 · Engine Controls: Continental Motors, Inc. (CMI) Throttle and Mixture Control Levers
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
- FAA orders naming the Continental IO-520 series 30 airworthiness directives
- 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 |
|---|---|---|---|---|---|---|
| N5411A | Cessna 210N |
Fixed-wing, single engine | Marc Aircraft Holding LLC Soldotna, Alaska |
Standard | 2025-07-22 | ValidFAA registration status code V: Valid registration. All codes |
| N87389 | Cessna 310R |
Fixed-wing, multi-engine | Missouri River Holdings LLC Fairview, Montana |
Standard | 2025-07-21 | ValidFAA registration status code V: Valid registration. All codes |
| N1015F | Cessna A185F |
Fixed-wing, single engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2025-07-15 | ValidFAA registration status code V: Valid registration. All codes |
| N2038N | Beech F33A |
Fixed-wing, single engine | Individual owner New York |
Standard | 2025-07-15 | ValidFAA registration status code V: Valid registration. All codes |
| N6101X | Cessna 310R |
Fixed-wing, multi-engine | Individual owner California |
Standard | 2025-07-15 | ValidFAA registration status code V: Valid registration. All codes |
| N145M | Beech V35B |
Fixed-wing, single engine | Co-owned owner Maine |
Standard | 2025-07-14 | ValidFAA registration status code V: Valid registration. All codes |
| N7316V | Bellanca 17-30 |
Fixed-wing, single engine | Individual owner New Mexico |
Standard | 2025-07-12 | ValidFAA registration status code V: Valid registration. All codes |
| N222PE | Cessna 310R |
Fixed-wing, multi-engine | Pacific Air Charters INC Honolulu, Hawaii |
Standard | 2025-07-11 | ValidFAA registration status code V: Valid registration. All codes |
| N5877S | Beech S35 |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2025-07-10 | ValidFAA registration status code V: Valid registration. All codes |
| N1563F | Beech F33A |
Fixed-wing, single engine | Individual owner California |
Standard | 2025-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N21DA | Beech 58 |
Fixed-wing, multi-engine | W Squared Holdings LLC Edmond, Oklahoma |
Standard | 2025-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N61164 | Cessna A185F |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N6656L | Beech F33A |
Fixed-wing, single engine | Aviation Solutions Group LLC Royal Oak, Michigan |
Standard | 2025-07-08 | ValidFAA registration status code V: Valid registration. All codes |
| N171DD | Beech 36 |
Fixed-wing, single engine | Norfolk Aircraft Interiors LLC Virginia Beach, Virginia |
Standard | 2025-07-06 | ValidFAA registration status code V: Valid registration. All codes |
| N1859W | Beech V35B |
Fixed-wing, single engine | Co-owned owner Indiana |
Standard | 2025-07-05 | ValidFAA registration status code V: Valid registration. All codes |
| N5981B | Beech A36 |
Fixed-wing, single engine | Individual owner Tennessee |
Standard | 2025-07-03 | ValidFAA registration status code V: Valid registration. All codes |
| N903V | Beech A36 |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-07-03 | ValidFAA registration status code V: Valid registration. All codes |
| N2396F | Cessna 210E |
Fixed-wing, single engine | Flippin Birds Aviation LLC Mobile, Alabama |
Standard | 2025-07-02 | ValidFAA registration status code V: Valid registration. All codes |
| N2989T | Aero Commander 200D |
Fixed-wing, single engine | Mid America Museum of Aviation and Transportation Sioux City, Iowa |
Standard | 2025-07-02 | ValidFAA registration status code V: Valid registration. All codes |
| N3951S | Cessna U206G |
Fixed-wing, single engine | Flying Pineapple LLC Naples, Florida |
Standard | 2025-07-02 | ValidFAA registration status code V: Valid registration. All codes |
| N4486S | Beech V35B |
Fixed-wing, single engine | Individual owner Michigan |
Standard | 2025-07-02 | ValidFAA registration status code V: Valid registration. All codes |
| N6655Q | Beech A36 |
Fixed-wing, single engine | Durham Aviation LLC Henrietta, Texas |
Standard | 2025-07-02 | ValidFAA registration status code V: Valid registration. All codes |
| N911JK | Beech V35B |
Fixed-wing, single engine | Withheld at owner's request | Standard | 2025-07-02 | ValidFAA registration status code V: Valid registration. All codes |
| N6821S | Beech V35B |
Fixed-wing, single engine | Southern States Aircraft LLC Walland, Tennessee |
Standard | 2025-06-30 | ValidFAA registration status code V: Valid registration. All codes |
| N78F | Cessna 210D |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2025-06-30 | ValidFAA registration status code V: Valid registration. All codes |
| N5DC | Beech A36 |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2025-06-27 | ValidFAA registration status code V: Valid registration. All codes |
| N9121Q | Beech V35B |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-06-27 | ValidFAA registration status code V: Valid registration. All codes |
| N28059 | Bellanca 17-30A |
Fixed-wing, single engine | Co-owned owner Florida |
Standard | 2025-06-26 | ValidFAA registration status code V: Valid registration. All codes |
| N42LB | Beech V35B |
Fixed-wing, single engine | Individual owner Virginia |
Standard | 2025-06-26 | ValidFAA registration status code V: Valid registration. All codes |
| N4451S | Beech A36 |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2025-06-26 | ValidFAA registration status code V: Valid registration. All codes |
| N521C | Beech F33A |
Fixed-wing, single engine | Individual owner Massachusetts |
Standard | 2025-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N6269V | Beech V35 |
Fixed-wing, single engine | Gopher One LLC Willernie, Minnesota |
Standard | 2025-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N64BW | Beech A36 |
Fixed-wing, single engine | Skyjams Holdings LLC Las Vegas, Nevada |
Standard | 2025-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N9928N | Cessna U206G |
Fixed-wing, single engine | Geaux Giddum Aviation INC Brandon, Mississippi |
Standard | 2025-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N2515T | Navion NAVION H |
Fixed-wing, single engine | Individual owner Virginia |
Standard | 2025-06-24 | ValidFAA registration status code V: Valid registration. All codes |
| N3810Z | Beech A36 |
Fixed-wing, single engine | Falcon Ridge Industries INC Milleville, New Jersey |
Standard | 2025-06-24 | ValidFAA registration status code V: Valid registration. All codes |
| N4187S | Beech V35B |
Fixed-wing, single engine | J&S Aviation Services LLC Hastings, Nebraska |
Standard | 2025-06-24 | ValidFAA registration status code V: Valid registration. All codes |
| N44TU | Cessna A185F |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-06-24 | ValidFAA registration status code V: Valid registration. All codes |
| N5146Q | Cessna 210L |
Fixed-wing, single engine | High Velocity Aircraft Solutions LLC Magazine, Arkansas |
Standard | 2025-06-24 | ValidFAA registration status code V: Valid registration. All codes |
| N5519A | Beech F33A |
Fixed-wing, single engine | Individual owner | Standard | 2025-06-23 | ValidFAA registration status code V: Valid registration. All codes |
| N1076F | Cessna A185F |
Fixed-wing, single engine | Cavu Clearing LLC Center Harbor, New Hampshire |
Standard | 2025-06-22 | ValidFAA registration status code V: Valid registration. All codes |
| N797RH | Beech V35 |
Fixed-wing, single engine | Cya LTD Crystal Lake, Illinois |
Standard | 2025-06-22 | ValidFAA registration status code V: Valid registration. All codes |
| N3844C | Cessna 310R |
Fixed-wing, multi-engine | Mansfield Heliflight INC Milton, Vermont |
Standard | 2025-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N3873G | Cessna U206B |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2025-06-20 | ValidFAA registration status code V: Valid registration. All codes |
| N2057A | Beech A36 |
Fixed-wing, single engine | Individual owner Tennessee |
Standard | 2025-06-19 | ValidFAA registration status code V: Valid registration. All codes |
| N4951F | Cessna TU206A |
Fixed-wing, single engine | Aerial Services INC Cedar Falls, Iowa |
Standard | 2025-06-19 | ValidFAA registration status code V: Valid registration. All codes |
| N936M | Bellanca 17-30A |
Fixed-wing, single engine | Co-owned owner New Mexico |
Standard | 2025-06-19 | ValidFAA registration status code V: Valid registration. All codes |
| N7235Q | Beech F33A |
Fixed-wing, single engine | H2F2 LLC Prairie Village, Kansas |
Standard | 2025-06-18 | ValidFAA registration status code V: Valid registration. All codes |
| N126GL | Beech A36 |
Fixed-wing, single engine | N126Gl LLC Roca, Nebraska |
Standard | 2025-06-17 | ValidFAA registration status code V: Valid registration. All codes |
| N7956M | Beech V35A |
Fixed-wing, single engine | Dream Flyers LLC Wilmington, Delaware |
Standard | 2025-06-17 | ValidFAA registration status code V: Valid registration. All codes |
| N8451N | Beech D55 |
Fixed-wing, multi-engine | Cfp Corporate Finance Partners LLC Newport Beach, California |
Standard | 2025-06-17 | ValidFAA registration status code V: Valid registration. All codes |
| N9036V | Beech A36 |
Fixed-wing, single engine | Individual owner Massachusetts |
Standard | 2025-06-14 | ValidFAA registration status code V: Valid registration. All codes |
| N2MB | Cessna 310R |
Fixed-wing, multi-engine | Alfa Foxtrot LLC Statesville, North Carolina |
Standard | 2025-06-13 | ValidFAA registration status code V: Valid registration. All codes |
| N381S | Beech D55 |
Fixed-wing, multi-engine | Bettys Beech LLC Conway, Arkansas |
Standard | 2025-06-13 | ValidFAA registration status code V: Valid registration. All codes |
| N8981M | Beech S35 |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2025-06-13 | ValidFAA registration status code V: Valid registration. All codes |
| N1763W | Beech A36 |
Fixed-wing, single engine | 63 Whiskey LLC Seattle, Washington |
Standard | 2025-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N2019Z | Beech A36 |
Fixed-wing, single engine | Tvat LLC Sun City, Arizona |
Standard | 2025-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N8378Q | Cessna U206F |
Fixed-wing, single engine | Aeroworks of Alaska LLC Chugiak, Alaska |
Standard | 2025-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N8674Z | Cessna TP206C |
Fixed-wing, single engine | Individual owner Idaho |
Standard | 2025-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N9230R | Cessna A188B |
Fixed-wing, single engine | Meyer Bros AG LLC Algona, Iowa |
Restricted | 2025-06-12 | ValidFAA registration status code V: Valid registration. All codes |
| N1662R | Cessna A185F |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2025-06-11 | ValidFAA registration status code V: Valid registration. All codes |
| N401D | Cessna A185F |
Fixed-wing, single engine | Salsola Logistics LLC Douglas, Wyoming |
Standard | 2025-06-11 | ValidFAA registration status code V: Valid registration. All codes |
| N310CK | Cessna 310R |
Fixed-wing, multi-engine | Co-owned owner Missouri |
Standard | 2025-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N8564R | Beech 58 |
Fixed-wing, multi-engine | Co-owned owner Washington |
Standard | 2025-06-10 | ValidFAA registration status code V: Valid registration. All codes |
| N461DA | Beech V35 |
Fixed-wing, single engine | Individual owner Indiana |
Standard | 2025-06-06 | ValidFAA registration status code V: Valid registration. All codes |
| N7233L | Beech F33A |
Fixed-wing, single engine | Bravo Foxtrot Zulu Holdings LLC Unionville, Connecticut |
Standard | 2025-06-06 | ValidFAA registration status code V: Valid registration. All codes |
| N9012V | Beech V35A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-06-06 | ValidFAA registration status code V: Valid registration. All codes |
| N1553A | Beech F33A |
Fixed-wing, single engine | N1553A LLC Belton, Texas |
Standard | 2025-06-05 | ValidFAA registration status code V: Valid registration. All codes |
| N2DU | Beech V35B |
Fixed-wing, single engine | Withheld at owner's request | Standard | 2025-06-05 | ValidFAA registration status code V: Valid registration. All codes |
| N37MC | Beech F33A |
Fixed-wing, single engine | Tvb Aviation LLC Mcallen, Texas |
Standard | 2025-06-05 | ValidFAA registration status code V: Valid registration. All codes |
| N731ML | Beech V35B |
Fixed-wing, single engine | Co-owned owner Arizona |
Standard | 2025-06-05 | ValidFAA registration status code V: Valid registration. All codes |
| N118CF | Beech 58 |
Fixed-wing, multi-engine | Individual owner New Hampshire |
Standard | 2025-06-04 | ValidFAA registration status code V: Valid registration. All codes |
| N864AK | Cessna A185F |
Fixed-wing, single engine | Northern Waters LLC Livingston, Montana |
Standard | 2025-06-04 | ValidFAA registration status code V: Valid registration. All codes |
| N35KJ | Beech V35B |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-06-03 | ValidFAA registration status code V: Valid registration. All codes |
| N136TP | Beech A36 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-06-02 | ValidFAA registration status code V: Valid registration. All codes |
| N244JN | Beech S35 |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2025-06-02 | ValidFAA registration status code V: Valid registration. All codes |
| N39862 | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-05-30 | ValidFAA registration status code V: Valid registration. All codes |
| N61102 | Cessna A185F |
Fixed-wing, single engine | R&G Leasing LLP Waterford, Wisconsin |
Standard | 2025-05-30 | ValidFAA registration status code V: Valid registration. All codes |
| N260M | Aero Commander 200D |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2025-05-28 | ValidFAA registration status code V: Valid registration. All codes |
| N545W | Cessna 210L |
Fixed-wing, single engine | Kenmore Crew Leasing INC Trustee Bellingham, Washington |
Standard | 2025-05-28 | ValidFAA registration status code V: Valid registration. All codes |
| N1110S | Cessna 210L |
Fixed-wing, single engine | Mob Aviation USA LLC Kissimmee, Florida |
Standard | 2025-05-24 | ValidFAA registration status code V: Valid registration. All codes |
| N6035N | Cessna 210M |
Fixed-wing, single engine | Ace Arrow LLC Reno, Nevada |
Standard | 2025-05-23 | ValidFAA registration status code V: Valid registration. All codes |
| N3785Q | Beech V35 |
Fixed-wing, single engine | Go Fly Missoula LLC Missoula, Montana |
Standard | 2025-05-22 | ValidFAA registration status code V: Valid registration. All codes |
| N1725W | Beech V35B |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2025-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N3733Q | Beech 95-C55 |
Fixed-wing, multi-engine | Individual owner Florida |
Standard | 2025-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N4RM | Cessna U206B |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2025-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N554DD | Beech E-55 |
Fixed-wing, multi-engine | Mhr Holdings LLC Indian Hills, Colorado |
Standard | 2025-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N735CE | Cessna U206G |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2025-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N787RM | Beech F33A |
Fixed-wing, single engine | Johnson Plane Services Greenbrier, Tennessee |
Standard | 2025-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N812F | Cessna A185F |
Fixed-wing, single engine | Individual owner Maine |
Standard | 2025-05-21 | ValidFAA registration status code V: Valid registration. All codes |
| N3686B | Navion NAVION G |
Fixed-wing, single engine | Individual owner South Dakota |
Standard | 2025-05-20 | ValidFAA registration status code V: Valid registration. All codes |
| N7463N | Beech V35A |
Fixed-wing, single engine | Tiger Owl Properties LLC Centennial, Colorado |
Standard | 2025-05-20 | ValidFAA registration status code V: Valid registration. All codes |
| N94WW | Beech A36 |
Fixed-wing, single engine | Zephyr Homes LLC Sebring, Florida |
Standard | 2025-05-20 | ValidFAA registration status code V: Valid registration. All codes |
| N545FA | Cessna 207A |
Fixed-wing, single engine | Jb Aircraft LLC Anchorage, Alaska |
Standard | 2025-05-19 | ValidFAA registration status code V: Valid registration. All codes |
| N728RH | Beech F33A |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-05-19 | ValidFAA registration status code V: Valid registration. All codes |
| N9111M | Cessna U206E |
Fixed-wing, single engine | Sierra Air LLC Willow, Alaska |
Standard | 2025-05-19 | ValidFAA registration status code V: Valid registration. All codes |
| N121ED | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-05-17 | ValidFAA registration status code V: Valid registration. All codes |
| N134TF | Beech F33A |
Fixed-wing, single engine | Spectre Aviation LLC Exeter, New Hampshire |
Standard | 2025-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N4458A | Beech V35B |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-05-16 | ValidFAA registration status code V: Valid registration. All codes |
| N53227 | Cessna A188B |
Fixed-wing, single engine | Birddog Aviation LLC Stockton, Kansas |
Restricted | 2025-05-16 | 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.