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 |
|---|---|---|---|---|---|---|
| N2749J | Cessna A185E |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2025-09-11 | ValidFAA registration status code V: Valid registration. All codes |
| N671SH | Beech V35 |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2025-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N9F | Cessna A185F |
Fixed-wing, single engine | Qualitair LLC Trustee Michelstadt, |
Standard | 2025-09-10 | ValidFAA registration status code V: Valid registration. All codes |
| N1MF | Beech 58 |
Fixed-wing, multi-engine | Nvision LLC Frisco, Texas |
Standard | 2025-09-08 | ValidFAA registration status code V: Valid registration. All codes |
| N5CK | Beech V35B |
Fixed-wing, single engine | Phlyx Aviation Edgewater, Maryland |
Standard | 2025-09-08 | ValidFAA registration status code V: Valid registration. All codes |
| N18321 | Beech F33A |
Fixed-wing, single engine | Bravo Delta Aviation LLC Sand Springs, Oklahoma |
Standard | 2025-09-06 | ValidFAA registration status code V: Valid registration. All codes |
| N65420 | Beech A36 |
Fixed-wing, single engine | D5167 LLC Kalispell, Montana |
Standard | 2025-09-06 | ValidFAA registration status code V: Valid registration. All codes |
| N232SU | Beech 35-C33A |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2025-09-04 | ValidFAA registration status code V: Valid registration. All codes |
| N584CL | Beech 58 |
Fixed-wing, multi-engine | Individual owner California |
Standard | 2025-09-04 | ValidFAA registration status code V: Valid registration. All codes |
| N5734V | Beech 35-C33A |
Fixed-wing, single engine | Individual owner California |
Standard | 2025-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N9597E | Bellanca 17-30A |
Fixed-wing, single engine | Individual owner Nevada |
Standard | 2025-08-28 | ValidFAA registration status code V: Valid registration. All codes |
| N47428 | Cessna A185E |
Fixed-wing, single engine | Co-owned owner Minnesota |
Standard | 2025-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N8011R | Beech V35A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N803DL | Beech V35B |
Fixed-wing, single engine | Rapids Ruddervators LLC Wisconsin Rapids, Wisconsin |
Standard | 2025-08-27 | ValidFAA registration status code V: Valid registration. All codes |
| N185HS | Cessna A185F |
Fixed-wing, single engine | Individual owner Alaska |
Standard | 2025-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N410PK | Cessna A185F |
Fixed-wing, single engine | Energy and Environment LLC Fayette, Maine |
Standard | 2025-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N9519Q | Beech 35-C33A |
Fixed-wing, single engine | Co-owned owner Illinois |
Standard | 2025-08-26 | ValidFAA registration status code V: Valid registration. All codes |
| N66VB | Beech F33A |
Fixed-wing, single engine | Co-owned owner Maryland |
Standard | 2025-08-25 | ValidFAA registration status code V: Valid registration. All codes |
| N14PH | Cessna A185F |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2025-08-24 | ValidFAA registration status code V: Valid registration. All codes |
| N30549 | Cessna 210L |
Fixed-wing, single engine | Lad Custom Publishing INC Buford, Georgia |
Standard | 2025-08-23 | ValidFAA registration status code V: Valid registration. All codes |
| N226MA | Beech F33A |
Fixed-wing, single engine | Sum Beech INC Knoxville, Tennessee |
Standard | 2025-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N313RJ | Beech F33A |
Fixed-wing, single engine | New Hampshire Flying Association INC Nashua, New Hampshire |
Standard | 2025-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N5418E | Cessna A185F |
Fixed-wing, single engine | Oertli Holdings LLC Pinehurst, Idaho |
Standard | 2025-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N593RA | Beech 58 |
Fixed-wing, multi-engine | Individual owner Georgia |
Standard | 2025-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N75PJ | Cessna U206F |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2025-08-22 | ValidFAA registration status code V: Valid registration. All codes |
| N33RN | Cessna 210E |
Fixed-wing, single engine | Individual owner Virginia |
Standard | 2025-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N341U | Beech E-55 |
Fixed-wing, multi-engine | Medic Choppers LLC Springdale, Arkansas |
Standard | 2025-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N4915V | Bellanca 17-30 |
Fixed-wing, single engine | Pegasus Aviation LLC Rogersville, Missouri |
Standard | 2025-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N767TM | Beech V35 |
Fixed-wing, single engine | Javelina Aero LLC Sheridan, Wyoming |
Standard | 2025-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N8395Q | Cessna A185F |
Fixed-wing, single engine | N8395Q LLC Ketchum, Idaho |
Standard | 2025-08-21 | ValidFAA registration status code V: Valid registration. All codes |
| N115CC | Bellanca 17-30A |
Fixed-wing, single engine | Plane Guys LLC Saint Onge, South Dakota |
Standard | 2025-08-20 | ValidFAA registration status code V: Valid registration. All codes |
| N210N | Cessna 210J |
Fixed-wing, single engine | Burton Stone LLC Durango, Colorado |
Standard | 2025-08-20 | ValidFAA registration status code V: Valid registration. All codes |
| N2508X | Cessna P206 |
Fixed-wing, single engine | Individual owner Washington |
Standard | 2025-08-19 | ValidFAA registration status code V: Valid registration. All codes |
| N584HP | Beech 58 |
Fixed-wing, multi-engine | N305Yv LLC Doral, Florida |
Standard | 2025-08-19 | ValidFAA registration status code V: Valid registration. All codes |
| N777DK | Beech 95-C55 |
Fixed-wing, multi-engine | Individual owner Georgia |
Standard | 2025-08-19 | ValidFAA registration status code V: Valid registration. All codes |
| N413SL | Beech F33A |
Fixed-wing, single engine | Milestone Plane LLC Wilmington, Delaware |
Standard | 2025-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N600MS | Beech A36 |
Fixed-wing, single engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2025-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N6209X | Cessna 310R |
Fixed-wing, multi-engine | Miller Aviation LLC DBA Huntington, Indiana |
Standard | 2025-08-18 | ValidFAA registration status code V: Valid registration. All codes |
| N138AD | Beech F33A |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-08-17 | ValidFAA registration status code V: Valid registration. All codes |
| N7348V | Bellanca 17-30 |
Fixed-wing, single engine | Aum Aero Aviation LLC Kissimmee, Florida |
Standard | 2025-08-16 | ValidFAA registration status code V: Valid registration. All codes |
| N514KC | Beech 95-C55 |
Fixed-wing, multi-engine | Individual owner Georgia |
Special flight permit | 2025-08-15 | ValidFAA registration status code V: Valid registration. All codes |
| N1PH | Beech F33A |
Fixed-wing, single engine | Standard | 2025-08-14 | ValidFAA registration status code V: Valid registration. All codes | |
| N2176F | Cessna U206 |
Fixed-wing, single engine | Claw Aviation LLC Missoula, Montana |
Standard | 2025-08-14 | ValidFAA registration status code V: Valid registration. All codes |
| N2023C | Beech 58 |
Fixed-wing, multi-engine | Fulps Aviation LLC Winston Salem, North Carolina |
Standard | 2025-08-12 | ValidFAA registration status code V: Valid registration. All codes |
| N4759E | Cessna A185F |
Fixed-wing, single engine | Individual owner Alaska |
Multiple | 2025-08-12 | ValidFAA registration status code V: Valid registration. All codes |
| N756DJ | Cessna U206G |
Fixed-wing, single engine | Sutton Aircraft Salvage LLC Palmer, Alaska |
Standard | 2025-08-12 | ValidFAA registration status code V: Valid registration. All codes |
| N1557G | Cessna 421B |
Fixed-wing, multi-engine | Airperks LLC Kalispell, Montana |
Standard | 2025-08-09 | ValidFAA registration status code V: Valid registration. All codes |
| N185RW | Cessna A185E |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-08-09 | ValidFAA registration status code V: Valid registration. All codes |
| N1852E | Cessna 310R |
Fixed-wing, multi-engine | Individual owner Texas |
Standard | 2025-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N3699A | Beech A36 |
Fixed-wing, single engine | Weskap Hangar Management LLC West Grove, Pennsylvania |
Standard | 2025-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N4FH | Beech V35B |
Fixed-wing, single engine | Co-owned owner Texas |
Standard | 2025-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N621G | Beech 95-C55 |
Fixed-wing, multi-engine | Individual owner Oklahoma |
Standard | 2025-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N9548G | Cessna A188B |
Fixed-wing, single engine | Meyer Bros AG LLC Algona, Iowa |
Restricted | 2025-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N9XN | Cessna 210N |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N1718R | Cessna A185F |
Fixed-wing, single engine | Individual owner Washington |
Multiple | 2025-08-07 | ValidFAA registration status code V: Valid registration. All codes |
| N121BK | Cessna 310R |
Fixed-wing, multi-engine | Seabee Training CORP Birmingham, Alabama |
Standard | 2025-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N16GM | Beech V35A |
Fixed-wing, single engine | Co-owned owner Oklahoma |
Standard | 2025-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N39868 | Bellanca 17-30A |
Fixed-wing, single engine | Horizon Adventures LLC Alamogordo, New Mexico |
Standard | 2025-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N4212S | Beech V35B |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2025-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N534E | Beech S35 |
Fixed-wing, single engine | Gilday Aviation LLC West Harrison, Indiana |
Standard | 2025-08-06 | ValidFAA registration status code V: Valid registration. All codes |
| N1769R | Cessna A185F |
Fixed-wing, single engine | Ct Aviation LLC Waverly, Nebraska |
Standard | 2025-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N206NM | Cessna U206F |
Fixed-wing, single engine | Sug-Air LLC Lubbock, Texas |
Standard | 2025-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N3526A | Beech V35B |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N3754Y | Cessna 210D |
Fixed-wing, single engine | Individual owner Arkansas |
Standard | 2025-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N3832Y | Cessna 210D |
Fixed-wing, single engine | Mtfg LLC Hayden, Idaho |
Standard | 2025-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N551T | Beech V35B |
Fixed-wing, single engine | N551T LLC Hesston, Kansas |
Standard | 2025-08-05 | ValidFAA registration status code V: Valid registration. All codes |
| N66EE | Beech E33 |
Fixed-wing, single engine | 3Cgs LLC Santa Barbara, California |
Standard | 2025-08-04 | ValidFAA registration status code V: Valid registration. All codes |
| N7RM | Beech 95-C55 |
Fixed-wing, multi-engine | Jasper Aviation INC Jasper, Alabama |
Standard | 2025-08-04 | ValidFAA registration status code V: Valid registration. All codes |
| N185MB | Cessna A185F |
Fixed-wing, single engine | Ts Aviation LLC Sioux Falls, South Dakota |
Standard | 2025-08-01 | ValidFAA registration status code V: Valid registration. All codes |
| N4791F | Cessna P206B |
Fixed-wing, single engine | Pfp Aviators LLC South Salt Lake, Utah |
Standard | 2025-08-01 | ValidFAA registration status code V: Valid registration. All codes |
| N3738R | Beech A36 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-07-31 | ValidFAA registration status code V: Valid registration. All codes |
| N3952A | Beech V35B |
Fixed-wing, single engine | Withheld at owner's request | Standard | 2025-07-31 | ValidFAA registration status code V: Valid registration. All codes |
| N660CK | Beech 58 |
Fixed-wing, multi-engine | Precision Delta CORP Ruleville, Mississippi |
Standard | 2025-07-31 | ValidFAA registration status code V: Valid registration. All codes |
| N1840W | Beech V35B |
Fixed-wing, single engine | Putz Aeroplanes LLC Bryan, Texas |
Standard | 2025-07-30 | ValidFAA registration status code V: Valid registration. All codes |
| N3077K | Beech F33A |
Fixed-wing, single engine | Co-owned owner North Carolina |
Standard | 2025-07-30 | ValidFAA registration status code V: Valid registration. All codes |
| N5080C | Cessna 310R |
Fixed-wing, multi-engine | Commerical Ice & Refrigeration LLC Marlton, New Jersey |
Standard | 2025-07-30 | ValidFAA registration status code V: Valid registration. All codes |
| N51PV | Beech F33A |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2025-07-30 | ValidFAA registration status code V: Valid registration. All codes |
| N68CT | Beech E-55 |
Fixed-wing, multi-engine | Silver Arrow LLC Alvin, Texas |
Standard | 2025-07-30 | ValidFAA registration status code V: Valid registration. All codes |
| N84497 | Cessna A188B |
Fixed-wing, single engine | N84497 LLC Omaha, Nebraska |
Restricted | 2025-07-30 | ValidFAA registration status code V: Valid registration. All codes |
| N6186X | Cessna 310R |
Fixed-wing, multi-engine | Saint Louis Cessna Group LLC Saint Louis, Missouri |
Standard | 2025-07-29 | ValidFAA registration status code V: Valid registration. All codes |
| N9410M | Cessna 210K |
Fixed-wing, single engine | Individual owner Louisiana |
Standard | 2025-07-29 | ValidFAA registration status code V: Valid registration. All codes |
| N1668U | Cessna 207 |
Fixed-wing, single engine | Ungalik Syndicate LLC Unalakleet, Alaska |
Standard | 2025-07-28 | ValidFAA registration status code V: Valid registration. All codes |
| N49PS | Beech A36 |
Fixed-wing, single engine | Zulu Time LLC Norfork, Arkansas |
Standard | 2025-07-28 | ValidFAA registration status code V: Valid registration. All codes |
| N9355R | Cessna A188B |
Fixed-wing, single engine | Skyline Aviation LLC Lewistown, Montana |
Restricted | 2025-07-28 | ValidFAA registration status code V: Valid registration. All codes |
| N6357X | Cessna U206G |
Fixed-wing, single engine | Individual owner Minnesota |
Standard | 2025-07-26 | ValidFAA registration status code V: Valid registration. All codes |
| N3127W | Beech A36 |
Fixed-wing, single engine | Walkcon Holdings LLC Amarillo, Texas |
Standard | 2025-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N31497 | Beech F33A |
Fixed-wing, single engine | N400Sr LLC Astoria, New York |
Standard | 2025-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N334TX | Beech A45 |
Fixed-wing, single engine | Magic Mentor LLC Canyon, Texas |
Standard | 2025-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N5727V | Beech V35 |
Fixed-wing, single engine | Culver Investments LLC Gordon, Texas |
Standard | 2025-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N8628Z | Cessna P206C |
Fixed-wing, single engine | Individual owner Ohio |
Standard | 2025-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N888BT | Cessna A188B |
Fixed-wing, single engine | Spraymax CORP Miami, Florida |
Restricted | 2025-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N9326Q | Beech 58 |
Fixed-wing, multi-engine | Individual owner Oklahoma |
Standard | 2025-07-25 | ValidFAA registration status code V: Valid registration. All codes |
| N17735 | Beech F33A |
Fixed-wing, single engine | Individual owner North Carolina |
Standard | 2025-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N185GG | Cessna A185F |
Fixed-wing, single engine | Individual owner Oregon |
Standard | 2025-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N4625Q | Cessna 210L |
Fixed-wing, single engine | Bank of Utah Trustee Salt Lake City, Utah |
Standard | 2025-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N50BD | Beech V35 |
Fixed-wing, single engine | Individual owner Texas |
Standard | 2025-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N744DD | Piper PA-46-310P |
Fixed-wing, single engine | Individual owner Louisiana |
Standard | 2025-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N8119R | Beech V35B |
Fixed-wing, single engine | Co-owned owner California |
Standard | 2025-07-24 | ValidFAA registration status code V: Valid registration. All codes |
| N1069F | Beech E33A |
Fixed-wing, single engine | Individual owner Pennsylvania |
Standard | 2025-07-23 | ValidFAA registration status code V: Valid registration. All codes |
| N185DG | Cessna A185F |
Fixed-wing, single engine | Individual owner Montana |
Standard | 2025-07-22 | 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.