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 |
|---|---|---|---|---|---|---|
| N7820R | Beech V35A |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2025-10-28 | ValidFAA registration status code V: Valid registration. All codes |
| N829T | Beech 35-C33 |
Fixed-wing, single engine | N829T LLC Ellenton, Florida |
Standard | 2025-10-28 | ValidFAA registration status code V: Valid registration. All codes |
| N4935Q | Cessna A185F |
Fixed-wing, single engine | Haygar Berlin INC Shorewood, Minnesota |
Standard | 2025-10-25 | ValidFAA registration status code V: Valid registration. All codes |
| N887PB | Cessna U206C |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-10-25 | ValidFAA registration status code V: Valid registration. All codes |
| N42MM | Beech F33A |
Fixed-wing, single engine | Piper Capital LLC Elkhorn, Nebraska |
Standard | 2025-10-24 | ValidFAA registration status code V: Valid registration. All codes |
| N212GB | Cessna 210L |
Fixed-wing, single engine | Sooner Farms LLC Siloam Springs, Arkansas |
Standard | 2025-10-23 | ValidFAA registration status code V: Valid registration. All codes |
| N341VT | Beech S35 |
Fixed-wing, single engine | Belmont Leasing LLC Gig Harbor, Washington |
Standard | 2025-10-23 | ValidFAA registration status code V: Valid registration. All codes |
| N7304V | Bellanca 17-30 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-10-23 | ValidFAA registration status code V: Valid registration. All codes |
| N2049N | Beech V35B |
Fixed-wing, single engine | Advanced Aviation LLC New Century, Kansas |
Standard | 2025-10-22 | ValidFAA registration status code V: Valid registration. All codes |
| N222MK | Beech F33A |
Fixed-wing, single engine | Individual owner North Dakota |
Standard | 2025-10-22 | ValidFAA registration status code V: Valid registration. All codes |
| N6310V | Beech A36 |
Fixed-wing, single engine | Eagle Air US INC Eau Claire, Wisconsin |
Standard | 2025-10-22 | ValidFAA registration status code V: Valid registration. All codes |
| N9023Q | Beech 58 |
Fixed-wing, multi-engine | Withheld at owner's request | Standard | 2025-10-22 | ValidFAA registration status code V: Valid registration. All codes |
| N3684H | Beech E-55 |
Fixed-wing, multi-engine | Avex X CORP Coral Gables, Florida |
Standard | 2025-10-21 | ValidFAA registration status code V: Valid registration. All codes |
| N3999S | Cessna 310R |
Fixed-wing, multi-engine | Viking Aviation LLC Kindred, North Dakota |
Standard | 2025-10-21 | ValidFAA registration status code V: Valid registration. All codes |
| N905BW | Cessna 210H |
Fixed-wing, single engine | Mauro William J Lancaster, California |
Standard | 2025-10-21 | ValidFAA registration status code V: Valid registration. All codes |
| N2796T | Beech V35 |
Fixed-wing, single engine | Individual owner California |
Standard | 2025-10-18 | ValidFAA registration status code V: Valid registration. All codes |
| N7203N | Beech V35A |
Fixed-wing, single engine | Grey Hairs LLC Lake Saint Louis, Missouri |
Standard | 2025-10-18 | ValidFAA registration status code V: Valid registration. All codes |
| N210DF | Cessna T210J |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2025-10-17 | ValidFAA registration status code V: Valid registration. All codes |
| N4944R | Cessna A188B |
Fixed-wing, single engine | Roma Air CORP Belle Glade, Florida |
Restricted | 2025-10-17 | ValidFAA registration status code V: Valid registration. All codes |
| N4911E | Cessna A185F |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2025-10-16 | ValidFAA registration status code V: Valid registration. All codes |
| N2004W | Beech S35 |
Fixed-wing, single engine | Peter Schiff Aero INC Cookeville, Tennessee |
Standard | 2025-10-15 | ValidFAA registration status code V: Valid registration. All codes |
| N2015W | Beech S35 |
Fixed-wing, single engine | Krosswind Aviation LLC Cape Coral, Florida |
Standard | 2025-10-15 | ValidFAA registration status code V: Valid registration. All codes |
| N3756X | Cessna 210J |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2025-10-15 | ValidFAA registration status code V: Valid registration. All codes |
| N411E | Beech 36 |
Fixed-wing, single engine | Heli Thrills LLC Wills Point, Texas |
Standard | 2025-10-15 | ValidFAA registration status code V: Valid registration. All codes |
| N5412E | Cessna A185F |
Fixed-wing, single engine | Sierra Skywagons LLC Helena, Montana |
Standard | 2025-10-15 | ValidFAA registration status code V: Valid registration. All codes |
| N124LR | Cessna A185E |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2025-10-14 | ValidFAA registration status code V: Valid registration. All codes |
| N725AD | Beech V35B |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-10-14 | ValidFAA registration status code V: Valid registration. All codes |
| N917DD | Cessna 210M |
Fixed-wing, single engine | Air Serve LLC Woodbine, New Jersey |
Standard | 2025-10-14 | ValidFAA registration status code V: Valid registration. All codes |
| N7349C | Cessna U206G |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2025-10-13 | ValidFAA registration status code V: Valid registration. All codes |
| N7542N | Beech 36 |
Fixed-wing, single engine | Individual owner Iowa |
Standard | 2025-10-13 | ValidFAA registration status code V: Valid registration. All codes |
| N191WE | Beech E-55 |
Fixed-wing, multi-engine | Fs Mickey LLC East Lansing, Michigan |
Standard | 2025-10-10 | ValidFAA registration status code V: Valid registration. All codes |
| N646T | Beech E-55 |
Fixed-wing, multi-engine | Tango Charlie LLC San Leon, Texas |
Standard | 2025-10-10 | ValidFAA registration status code V: Valid registration. All codes |
| N735MW | Cessna U206G |
Fixed-wing, single engine | Individual owner Nevada |
Standard | 2025-10-10 | ValidFAA registration status code V: Valid registration. All codes |
| N1102W | Beech V35B |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-10-08 | ValidFAA registration status code V: Valid registration. All codes |
| N2079L | Beech A36 |
Fixed-wing, single engine | Platinum Aviation LLC Belvidere, Tennessee |
Standard | 2025-10-08 | ValidFAA registration status code V: Valid registration. All codes |
| N234DH | Beech V35A |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2025-10-08 | ValidFAA registration status code V: Valid registration. All codes |
| N2721T | Beech V35 |
Fixed-wing, single engine | Individual owner Maryland |
Standard | 2025-10-08 | ValidFAA registration status code V: Valid registration. All codes |
| N3713Q | Beech V35 |
Fixed-wing, single engine | Airborne Adventures LLC Clive, Iowa |
Standard | 2025-10-08 | ValidFAA registration status code V: Valid registration. All codes |
| N3534Q | Cessna A188 |
Fixed-wing, single engine | Leatherneck Aviation LLC Billings, Montana |
Restricted | 2025-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N450JR | Beech 58 |
Fixed-wing, multi-engine | Nowell Borders LP Edinburg, Texas |
Standard | 2025-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N7347V | Bellanca 17-30 |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2025-10-06 | ValidFAA registration status code V: Valid registration. All codes |
| N4115S | Beech 58 |
Fixed-wing, multi-engine | Co-owned owner Michigan |
Standard | 2025-10-04 | ValidFAA registration status code V: Valid registration. All codes |
| N1756W | Beech V35B |
Fixed-wing, single engine | Individual owner Iowa |
Standard | 2025-10-03 | ValidFAA registration status code V: Valid registration. All codes |
| N3716Q | Beech 95-C55 |
Fixed-wing, multi-engine | Individual owner Idaho |
Standard | 2025-10-03 | ValidFAA registration status code V: Valid registration. All codes |
| N4204B | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2025-10-03 | ValidFAA registration status code V: Valid registration. All codes |
| N76KU | Beech S35 |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2025-10-03 | ValidFAA registration status code V: Valid registration. All codes |
| N77CY | Beech V35B |
Fixed-wing, single engine | N77Cy LLC Lambertville, Michigan |
Standard | 2025-10-03 | ValidFAA registration status code V: Valid registration. All codes |
| N7933K | Beech S35 |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2025-10-03 | ValidFAA registration status code V: Valid registration. All codes |
| N8231L | Beech F33A |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2025-10-03 | ValidFAA registration status code V: Valid registration. All codes |
| N1838R | Beech A36 |
Fixed-wing, single engine | Six Zero Zulu LLC Kalispell, Montana |
Standard | 2025-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N8420N | Beech V35A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-10-02 | ValidFAA registration status code V: Valid registration. All codes |
| N3803M | Beech V35B |
Fixed-wing, single engine | Withheld at owner's request | Standard | 2025-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N85BB | Beech A36 |
Fixed-wing, single engine | Avanti Aviation LLC Bellevue, Nebraska |
Standard | 2025-09-30 | ValidFAA registration status code V: Valid registration. All codes |
| N612H | Beech E-55 |
Fixed-wing, multi-engine | Clear Sound Hearing LLC Sedalia, Missouri |
Standard | 2025-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N8358N | Beech V35A |
Fixed-wing, single engine | Quam Contracting LLC Creston, Iowa |
Standard | 2025-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N8552R | Beech F33A |
Fixed-wing, single engine | Co-owned owner Florida |
Standard | 2025-09-26 | ValidFAA registration status code V: Valid registration. All codes |
| N32PX | Cessna U206F |
Fixed-wing, single engine | Kustatan Leasing LLC Kenai, Alaska |
Standard | 2025-09-25 | ValidFAA registration status code V: Valid registration. All codes |
| N4388W | Beech V35B |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2025-09-25 | ValidFAA registration status code V: Valid registration. All codes |
| N808TS | Beech E33C |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2025-09-25 | ValidFAA registration status code V: Valid registration. All codes |
| N8189R | Beech F33C |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-09-25 | ValidFAA registration status code V: Valid registration. All codes |
| N2391F | Cessna 210E |
Fixed-wing, single engine | Blue Horizon Consulting LLC Toccoa, Georgia |
Standard | 2025-09-24 | ValidFAA registration status code V: Valid registration. All codes |
| N437E | Beech V35 |
Fixed-wing, single engine | Magic Shuttle Bus Air Tours LLC Traverse City, Michigan |
Standard | 2025-09-24 | ValidFAA registration status code V: Valid registration. All codes |
| N1514B | Beech F33A |
Fixed-wing, single engine | Lilu LLC Siloam Springs, Arkansas |
Standard | 2025-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N400GT | Cessna 210L |
Fixed-wing, single engine | Delaney Cattle CO LLC De Witt, Iowa |
Standard | 2025-09-23 | ValidFAA registration status code V: Valid registration. All codes |
| N6055J | Beech E-55 |
Fixed-wing, multi-engine | Elkhorn Valley Aviation LLC Fremont, Nebraska |
Standard | 2025-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N61RB | Cessna 210L |
Fixed-wing, single engine | Kiazen Black Mountain Holdings LLC Black Mountain, North Carolina |
Standard | 2025-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N6625R | Beech V35B |
Fixed-wing, single engine | Beech South LLC Kalispell, Montana |
Standard | 2025-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N66918 | Beech 58 |
Fixed-wing, multi-engine | Lbc1 LLC Mount Olive, North Carolina |
Standard | 2025-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N7903M | Beech 35-C33A |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2025-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N210DA | Beech 58 |
Fixed-wing, multi-engine | Individual owner Virginia |
Standard | 2025-09-20 | ValidFAA registration status code V: Valid registration. All codes |
| N6176U | Beech V35B |
Fixed-wing, single engine | Individual owner Pennsylvania |
Standard | 2025-09-20 | ValidFAA registration status code V: Valid registration. All codes |
| N185FT | Cessna A185F |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-09-19 | ValidFAA registration status code V: Valid registration. All codes |
| N1852R | Cessna A185F |
Fixed-wing, single engine | Co-owned owner Alaska |
Standard | 2025-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N3853G | Cessna U206B |
Fixed-wing, single engine | 3853G LLC Umatilla, Florida |
Standard | 2025-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N50780 | Beech B-55 |
Fixed-wing, multi-engine | Beech Beauty LLC Broomfield, Colorado |
Standard | 2025-09-18 | ValidFAA registration status code V: Valid registration. All codes |
| N78KG | Beech A36 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-09-17 | ValidFAA registration status code V: Valid registration. All codes |
| N80124 | Cessna A185F |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2025-09-17 | ValidFAA registration status code V: Valid registration. All codes |
| N1975A | Beech A36 |
Fixed-wing, single engine | Dayspring Aviation LLC Bend, Oregon |
Standard | 2025-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N233C | Beech E33C |
Fixed-wing, single engine | NW Beech Boys LLC Everson, Washington |
Standard | 2025-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N340B | Beech 95-C55 |
Fixed-wing, multi-engine | Individual owner Minnesota |
Standard | 2025-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N56KM | Beech 58 |
Fixed-wing, multi-engine | Budake LLC Macon, Georgia |
Standard | 2025-09-16 | ValidFAA registration status code V: Valid registration. All codes |
| N1734X | Cessna 210L |
Fixed-wing, single engine | Right Wing Left Wing Flyers LLC Cleveland, Georgia |
Standard | 2025-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N1815G | Beech V35B |
Fixed-wing, single engine | Galaxy Aviation LLC Nantucket, Massachusetts |
Standard | 2025-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N3760Y | Cessna 210D |
Fixed-wing, single engine | Co-owned owner Kentucky |
Standard | 2025-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N4331W | Beech 58 |
Fixed-wing, multi-engine | Co-owned owner Arkansas |
Standard | 2025-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N59DH | Beech V35A |
Fixed-wing, single engine | Individual owner Ohio |
Standard | 2025-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N6994H | Cessna A185F |
Fixed-wing, single engine | Mach 2 LLC Fairbanks, Alaska |
Multiple | 2025-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N7768R | Beech V35A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N82687 | Cessna U206F |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2025-09-15 | ValidFAA registration status code V: Valid registration. All codes |
| N18294 | Beech V35B |
Fixed-wing, single engine | Bundy Holdings LLC Walnut Grove, Missouri |
Standard | 2025-09-13 | ValidFAA registration status code V: Valid registration. All codes |
| N277MD | Beech 95-C55 |
Fixed-wing, multi-engine | Standard | 2025-09-13 | ValidFAA registration status code V: Valid registration. All codes | |
| N5487U | Beech V35 |
Fixed-wing, single engine | Individual owner Vermont |
Standard | 2025-09-13 | ValidFAA registration status code V: Valid registration. All codes |
| N5625K | Beech S35 |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2025-09-13 | ValidFAA registration status code V: Valid registration. All codes |
| N68JP | Beech E-55 |
Fixed-wing, multi-engine | Docs Aviation LLC Saint Peters, Missouri |
Standard | 2025-09-13 | ValidFAA registration status code V: Valid registration. All codes |
| N756HR | Cessna U206G |
Fixed-wing, single engine | Peters Aire LLC Brainerd, Minnesota |
Standard | 2025-09-13 | ValidFAA registration status code V: Valid registration. All codes |
| N37256 | Cessna 310R |
Fixed-wing, multi-engine | Patriot Air INC Belleville, Illinois |
Standard | 2025-09-12 | ValidFAA registration status code V: Valid registration. All codes |
| N4375W | Beech 58 |
Fixed-wing, multi-engine | Touch N Go Aeroworks LLC Greenville, South Carolina |
Standard | 2025-09-12 | ValidFAA registration status code V: Valid registration. All codes |
| N9056S | Beech A36 |
Fixed-wing, single engine | Kenmore Crew Leasing INC Trustee Bellingham, Washington |
Standard | 2025-09-12 | ValidFAA registration status code V: Valid registration. All codes |
| N17838 | Beech A36 |
Fixed-wing, single engine | N17838 LLC Scottsdale, Arizona |
Standard | 2025-09-11 | ValidFAA registration status code V: Valid registration. All codes |
| N223LD | Cessna U206A |
Fixed-wing, single engine | Gaston'S White River Resort INC Lakeview, Arkansas |
Standard | 2025-09-11 | 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.