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 Motors). 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 Motors · 18 models listed · revised November 2, 2011
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 |
|---|---|---|---|---|---|---|
| N67KW | Beech D55 |
Fixed-wing, multi-engine | Co-owned owner Texas |
Standard | 2025-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N5119U | Cessna 206 |
Fixed-wing, single engine | Individual owner Idaho |
Standard | 2025-12-16 | ValidFAA registration status code V: Valid registration. All codes |
| N580W | Beech 58 |
Fixed-wing, multi-engine | Individual owner Florida |
Standard | 2025-12-16 | ValidFAA registration status code V: Valid registration. All codes |
| N102RB | Beech V35A |
Fixed-wing, single engine | Individual owner Kansas |
Standard | 2025-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N13BL | Beech A36 |
Fixed-wing, single engine | Cross Country Aviation LLC Park City, Utah |
Standard | 2025-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N555RA | Beech E-55 |
Fixed-wing, multi-engine | Mooseknuckle Aviation LLC Haslet, Texas |
Standard | 2025-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N67343 | Beech A36 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-12-12 | ValidFAA registration status code V: Valid registration. All codes |
| N206SD | Cessna P206 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-12-11 | ValidFAA registration status code V: Valid registration. All codes |
| N3347L | Cessna A185E |
Fixed-wing, single engine | Acumen Aerotech LLC Rogers, Texas |
Standard | 2025-12-11 | ValidFAA registration status code V: Valid registration. All codes |
| N1094W | Beech V35B |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2025-12-10 | ValidFAA registration status code V: Valid registration. All codes |
| N401WW | Cessna 401 |
Fixed-wing, multi-engine | Attitude Aviators INC North Myrtle Beach, South Carolina |
Standard | 2025-12-10 | ValidFAA registration status code V: Valid registration. All codes |
| N433DN | Beech F33A |
Fixed-wing, single engine | Gary Boyce Aircraft Sales LLC Shelbyville, Tennessee |
Standard | 2025-12-10 | ValidFAA registration status code V: Valid registration. All codes |
| N5510M | Aero Commander 200D |
Fixed-wing, single engine | Individual owner Georgia |
Standard | 2025-12-10 | ValidFAA registration status code V: Valid registration. All codes |
| N5604S | Beech V35 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-12-10 | ValidFAA registration status code V: Valid registration. All codes |
| N300RR | Beech 35-C33A |
Fixed-wing, single engine | Co-owned owner Virginia |
Standard | 2025-12-09 | ValidFAA registration status code V: Valid registration. All codes |
| N224CH | Cessna A185F |
Fixed-wing, single engine | Individual owner New York |
Standard | 2025-12-08 | ValidFAA registration status code V: Valid registration. All codes |
| N619VM | Cessna A185F |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2025-12-08 | ValidFAA registration status code V: Valid registration. All codes |
| N873BC | Beech F33A |
Fixed-wing, single engine | Media Stew LLC Carson City, Nevada |
Standard | 2025-12-08 | ValidFAA registration status code V: Valid registration. All codes |
| N1718E | Cessna 310R |
Fixed-wing, multi-engine | Captain Kenny J LLC Holiday, Florida |
Standard | 2025-12-07 | ValidFAA registration status code V: Valid registration. All codes |
| N185ZZ | Cessna A185E |
Fixed-wing, single engine | Leading Edge LLC Scottsdale, Arizona |
Standard | 2025-12-07 | ValidFAA registration status code V: Valid registration. All codes |
| N1807L | Beech A36 |
Fixed-wing, single engine | Cobra Industries Aeronautical Wrightwood, California |
Standard | 2025-12-06 | ValidFAA registration status code V: Valid registration. All codes |
| N185JS | Cessna A185F |
Fixed-wing, single engine | N185Js LLC Fairbanks, Alaska |
Standard | 2025-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N6092S | Beech V35B |
Fixed-wing, single engine | Individual owner Tennessee |
Standard | 2025-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N6351X | Beech 58 |
Fixed-wing, multi-engine | Individual owner Texas |
Standard | 2025-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N8136R | Beech A36 |
Fixed-wing, single engine | Dreamstead Recreational Vehicles LLC Kalispell, Montana |
Standard | 2025-12-05 | ValidFAA registration status code V: Valid registration. All codes |
| N2058W | Beech V35 |
Fixed-wing, single engine | Individual owner Illinois |
Standard | 2025-12-04 | ValidFAA registration status code V: Valid registration. All codes |
| N20WF | Cessna 310R |
Fixed-wing, multi-engine | Individual owner Texas |
Standard | 2025-12-04 | ValidFAA registration status code V: Valid registration. All codes |
| N42AU | Beech F33A |
Fixed-wing, single engine | Bite Wing Aviation LLC Wichita, Kansas |
Standard | 2025-12-04 | ValidFAA registration status code V: Valid registration. All codes |
| N7AS | Beech 35-C33A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-12-04 | ValidFAA registration status code V: Valid registration. All codes |
| N9878M | Cessna 210M |
Fixed-wing, single engine | A&J Airsales INC San Antonio, Texas |
Standard | 2025-12-04 | ValidFAA registration status code V: Valid registration. All codes |
| N1828F | Cessna 210F |
Fixed-wing, single engine | Individual owner Pennsylvania |
Standard | 2025-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N18A | Beech F33A |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2025-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N206D | Cessna U206G |
Fixed-wing, single engine | P W Feenstra Construction INC Queen Creek, Arizona |
Standard | 2025-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N2756J | Cessna A185E |
Fixed-wing, single engine | Squatch Air LLC Wasilla, Alaska |
Standard | 2025-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N6955N | Cessna A185F |
Fixed-wing, single engine | Individual owner Illinois |
Standard | 2025-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N738T | Beech 58 |
Fixed-wing, multi-engine | Individual owner Missouri |
Standard | 2025-12-03 | ValidFAA registration status code V: Valid registration. All codes |
| N9243Q | Beech V35B |
Fixed-wing, single engine | Individual owner Michigan |
Standard | 2025-12-02 | ValidFAA registration status code V: Valid registration. All codes |
| N9370Q | Beech F33A |
Fixed-wing, single engine | S & L Skyview Aviation LLC Wilmington, Delaware |
Standard | 2025-12-02 | ValidFAA registration status code V: Valid registration. All codes |
| N3878Y | Cessna 210D |
Fixed-wing, single engine | Withheld at owner's request | Standard | 2025-12-01 | ValidFAA registration status code V: Valid registration. All codes |
| N4038B | Bellanca 17-30A |
Fixed-wing, single engine | Harris James Thomas Churubusco, Indiana |
Standard | 2025-12-01 | ValidFAA registration status code V: Valid registration. All codes |
| N1070W | Beech F33A |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-11-30 | ValidFAA registration status code V: Valid registration. All codes |
| N36BH | Beech A36 |
Fixed-wing, single engine | Hobo LLC Milford, Iowa |
Standard | 2025-11-30 | ValidFAA registration status code V: Valid registration. All codes |
| N731CE | Cessna A188B |
Fixed-wing, single engine | Noe Aviation LLC Vinton, Iowa |
Restricted | 2025-11-30 | ValidFAA registration status code V: Valid registration. All codes |
| N1650U | Cessna 207 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N300EB | Cessna 310R |
Fixed-wing, multi-engine | 4031 Pilots LLC Crown Point, Indiana |
Standard | 2025-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N321TB | Beech A36 |
Fixed-wing, single engine | Mob Aviation USA LLC Auburndale, Florida |
Standard | 2025-11-28 | ValidFAA registration status code V: Valid registration. All codes |
| N1820F | Beech A36 |
Fixed-wing, single engine | Hamilton Aviation LLC Waycross, Georgia |
Standard | 2025-11-26 | ValidFAA registration status code V: Valid registration. All codes |
| N440T | Beech F33A |
Fixed-wing, single engine | Js Aviation Group LLC Sedona, Arizona |
Standard | 2025-11-24 | ValidFAA registration status code V: Valid registration. All codes |
| N9482R | Cessna A188B |
Fixed-wing, single engine | Windy Lane Farms Transport LLC Mulberry, Indiana |
Restricted | 2025-11-24 | ValidFAA registration status code V: Valid registration. All codes |
| N155CH | Beech E33A |
Fixed-wing, single engine | K Top J Cattle Company LLC Eldorado, Texas |
Standard | 2025-11-23 | ValidFAA registration status code V: Valid registration. All codes |
| N44SB | Beech F33A |
Fixed-wing, single engine | Co-owned owner Georgia |
Standard | 2025-11-23 | ValidFAA registration status code V: Valid registration. All codes |
| N59240 | Cessna 210L |
Fixed-wing, single engine | Individual owner Oklahoma |
Standard | 2025-11-23 | ValidFAA registration status code V: Valid registration. All codes |
| N20318 | Beech V35B |
Fixed-wing, single engine | Individual owner Illinois |
Standard | 2025-11-22 | ValidFAA registration status code V: Valid registration. All codes |
| N1225Q | Cessna A185F |
Fixed-wing, single engine | Individual owner Vermont |
Standard | 2025-11-21 | ValidFAA registration status code V: Valid registration. All codes |
| N185RM | Cessna A185F |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2025-11-19 | ValidFAA registration status code V: Valid registration. All codes |
| N1911J | Beech A36 |
Fixed-wing, single engine | D M C Aviation LLC Jennings, Louisiana |
Standard | 2025-11-19 | ValidFAA registration status code V: Valid registration. All codes |
| N755CM | Cessna 210N |
Fixed-wing, single engine | Cluster Fish LLC Charleston, South Carolina |
Standard | 2025-11-19 | ValidFAA registration status code V: Valid registration. All codes |
| N2678S | Cessna A185F |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2025-11-18 | ValidFAA registration status code V: Valid registration. All codes |
| N2701T | Beech V35 |
Fixed-wing, single engine | Individual owner California |
Standard | 2025-11-18 | ValidFAA registration status code V: Valid registration. All codes |
| N310CG | Cessna 310R |
Fixed-wing, multi-engine | Safety Squadron LLC Raleigh, North Carolina |
Standard | 2025-11-18 | ValidFAA registration status code V: Valid registration. All codes |
| N4836F | Cessna U206A |
Fixed-wing, single engine | Gold River Aviation LLC Rio Verde, Arizona |
Standard | 2025-11-18 | ValidFAA registration status code V: Valid registration. All codes |
| N743T | Beech A36 |
Fixed-wing, single engine | ISR Aviation LLC Lewes, Delaware |
Standard | 2025-11-18 | ValidFAA registration status code V: Valid registration. All codes |
| N8185R | Beech A36 |
Fixed-wing, single engine | Co-owned owner Florida |
Standard | 2025-11-18 | ValidFAA registration status code V: Valid registration. All codes |
| N364HP | Beech A36 |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2025-11-17 | ValidFAA registration status code V: Valid registration. All codes |
| N7954K | Beech S35 |
Fixed-wing, single engine | Individual owner Mississippi |
Standard | 2025-11-17 | ValidFAA registration status code V: Valid registration. All codes |
| N249BB | Beech V35B |
Fixed-wing, single engine | 42M Aviation LLC Shady Shores, Texas |
Standard | 2025-11-16 | ValidFAA registration status code V: Valid registration. All codes |
| N1995U | Cessna A185E |
Fixed-wing, single engine | Withheld at owner's request | Multiple | 2025-11-15 | ValidFAA registration status code V: Valid registration. All codes |
| N4860W | Beech 35-C33A |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-11-14 | ValidFAA registration status code V: Valid registration. All codes |
| N633BM | Beech F33A |
Fixed-wing, single engine | Over the Top Cattle CO LLC Perkinston, Mississippi |
Standard | 2025-11-14 | ValidFAA registration status code V: Valid registration. All codes |
| N8169R | Beech V35B |
Fixed-wing, single engine | Preister Properties LLC Norfolk, Nebraska |
Standard | 2025-11-14 | ValidFAA registration status code V: Valid registration. All codes |
| N133SB | Beech F33A |
Fixed-wing, single engine | Co-owned owner Alabama |
Standard | 2025-11-13 | ValidFAA registration status code V: Valid registration. All codes |
| N59073 | Cessna 210L |
Fixed-wing, single engine | Individual owner California |
Standard | 2025-11-13 | ValidFAA registration status code V: Valid registration. All codes |
| N33LP | Beech A36 |
Fixed-wing, single engine | A&H Services LLC Danville, Georgia |
Standard | 2025-11-12 | ValidFAA registration status code V: Valid registration. All codes |
| N18291 | Beech F33A |
Fixed-wing, single engine | Individual owner California |
Standard | 2025-11-10 | ValidFAA registration status code V: Valid registration. All codes |
| N185AE | Cessna A185F |
Fixed-wing, single engine | Dbl LLC Hays, Kansas |
Multiple | 2025-11-10 | ValidFAA registration status code V: Valid registration. All codes |
| N207J | Cessna P206 |
Fixed-wing, single engine | Unwrapped LLC Dover, Delaware |
Standard | 2025-11-10 | ValidFAA registration status code V: Valid registration. All codes |
| N6670J | Beech V35B |
Fixed-wing, single engine | Co-owned owner Oklahoma |
Standard | 2025-11-10 | ValidFAA registration status code V: Valid registration. All codes |
| N68TR | Bellanca 17-30A |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2025-11-10 | ValidFAA registration status code V: Valid registration. All codes |
| N70438 | Cessna A185F |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2025-11-10 | ValidFAA registration status code V: Valid registration. All codes |
| N113LC | Cessna A185E |
Fixed-wing, single engine | Lcd Aviation CORP Wilmington, Delaware |
Standard | 2025-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N2522X | Cessna P206 |
Fixed-wing, single engine | Ace Handyman Services LLC Sussex, New Jersey |
Standard | 2025-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N33SF | Beech 58 |
Fixed-wing, multi-engine | Roseville Aviation LLC Roxboro, North Carolina |
Standard | 2025-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N6622V | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Colorado |
Standard | 2025-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N7164N | Beech V35A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N764DH | Beech F33A |
Fixed-wing, single engine | Individual owner Arizona |
Standard | 2025-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N9993 | Beech V35B |
Fixed-wing, single engine | Pro Team Aviation LLC Jonesboro, Arkansas |
Standard | 2025-11-07 | ValidFAA registration status code V: Valid registration. All codes |
| N17746 | Beech V35B |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2025-11-06 | ValidFAA registration status code V: Valid registration. All codes |
| N80FA | Cessna 310R |
Fixed-wing, multi-engine | Dma One LLC Dayton, Ohio |
Standard | 2025-11-05 | ValidFAA registration status code V: Valid registration. All codes |
| N375MK | Cessna 210D |
Fixed-wing, single engine | Integrity S&J Properties LLC Amarillo, Texas |
Standard | 2025-11-04 | ValidFAA registration status code V: Valid registration. All codes |
| N302GP | Cessna 210E |
Fixed-wing, single engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2025-11-03 | ValidFAA registration status code V: Valid registration. All codes |
| N4961E | Cessna A185F |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2025-11-03 | ValidFAA registration status code V: Valid registration. All codes |
| N498DA | Cessna 310R |
Fixed-wing, multi-engine | Smm Leasing LLC Camp Verde, Arizona |
Standard | 2025-11-02 | ValidFAA registration status code V: Valid registration. All codes |
| N6470H | Cessna 207A |
Fixed-wing, single engine | Jb Aircraft LLC Anchorage, Alaska |
Standard | 2025-10-31 | ValidFAA registration status code V: Valid registration. All codes |
| N777CS | Beech E33A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-10-31 | ValidFAA registration status code V: Valid registration. All codes |
| N927DC | Beech V35B |
Fixed-wing, single engine | Ciruli David e Lafayette, California |
Standard | 2025-10-31 | ValidFAA registration status code V: Valid registration. All codes |
| N749MR | Beech F33A |
Fixed-wing, single engine | Afterburner Aerospace LLC Belgrade, Montana |
Standard | 2025-10-30 | ValidFAA registration status code V: Valid registration. All codes |
| N9195Q | Beech 58 |
Fixed-wing, multi-engine | Meadowlake Airpark LLC Lenoir City, Tennessee |
Standard | 2025-10-30 | ValidFAA registration status code V: Valid registration. All codes |
| N111C | Cessna A185F |
Fixed-wing, single engine | Ace'S Hangar LLC Bentonville, Arkansas |
Standard | 2025-10-29 | ValidFAA registration status code V: Valid registration. All codes |
| N4605F | Cessna P206A |
Fixed-wing, single engine | Sterling Aviation2 Lllc Boca Raton, Florida |
Standard | 2025-10-29 | ValidFAA registration status code V: Valid registration. All codes |
| N394MC | Beech D55 |
Fixed-wing, multi-engine | Withheld at owner's request | Standard | 2025-10-28 | 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.