Continental IO-520-BA
25 aircraft on the U.S. register carry a Continental IO-520-BA engine, rated at about 285 horsepower. The Beechcraft V35 Bonanza is the model most often fitted with it (10 aircraft). The aircraft carrying it were built between 1953 and 1978.
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-BA. FAA spelling: IO-520-BA.
Fitted to model families
Beechcraft V35 Bonanza10Beechcraft F33 Bonanza5Beechcraft A36 Bonanza4Beechcraft S35 Bonanza2Beechcraft A451Beech C-33A1Beechcraft D-451Navion NAVION H1
Beechcraft V35 Bonanza · Beechcraft F33 Bonanza · Beechcraft A36 Bonanza · Beechcraft S35 Bonanza · Beechcraft A45 · Beech C-33A · Beechcraft D-45 · Navion NAVION H
Where they are owner's state
Florida5Delaware3California3Wyoming2New Mexico2Georgia2Virginia1Texas1Oklahoma1New York1
Kind of aircraft
Piston singles25 (100%)
When the aircraft were built by decade
What the FAA has certified, ordered and been told about the Continental IO-520-BA the component layer
The design is held under 1 type certificate (E5CE, held by Continental Aerospace Technologies, INC.). The FAA has issued 33 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 111 failure reports with the FAA since 1995, 4 of them in the last ten years.
FAA orders 33 airworthiness directives · newest first
2023-10-262023-17-04 · Reciprocating Engine Oil System · engine
2023-07-172023-09-09 · Exhaust Turbine System (Recip) · 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
Failure reports 111 since · what operators and shops told the FAA
Parts most often reported as the reports name them
Cylinder46Cylinder Head15Crankshaft5Crankcase3Piston3Rib3Bearing2Bladder2Control Cable2Drive Gear2
Latest reports
2026-07-08Impulse Coupling: destroyed
2018-11-01Control Cable: corroded
2017-09-01Gasket: failed
2017-06-26Magneto: faulty
2016-10-20Brake Disc: failed
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 10 with this engine series
- Beechcraft F33 Bonanza 5 with this engine series
- Beechcraft A36 Bonanza 4 with this engine series
- Beechcraft S35 Bonanza 2 with this engine series
- Beechcraft A45 1 with this engine series
- Beechcraft D-45 1 with this engine series
- Navion NAVION H 1 with this engine series
Where they are
- Florida 5 of these aircraft
- Delaware 3 of these aircraft
- California 3 of these aircraft
- Wyoming 2 of these aircraft
- New Mexico 2 of these aircraft
Biggest operators
- Southern Aircraft Consultancy INC Trustee 2 of these aircraft
- Sky West Aviation INC Trustee 2 of these aircraft
- Aerospace Trust Management LLC Trustee 2 of these aircraft
- Qualitair LLC Trustee 1 of these aircraft
Airworthiness
- FAA orders naming the Continental IO-520-BA 33 airworthiness directives
- Failure reports on the Continental IO-520-BA 111 reports since 1995
Analytics
These connections as data: /graph/engine/continental-io-520-ba.json · about the eFlight graph.
Aircraft newest certificates first · 25
| Tail no. | Maker and model | Group | Owner and base | Certificate | Registered | Status |
|---|---|---|---|---|---|---|
| N65LV | Beech V35 |
Fixed-wing, single engine | Sky West Aviation INC Trustee Albuquerque, New Mexico |
Standard | 2026-06-25 | ValidFAA registration status code V: Valid registration. All codes |
| N160SP | Beech V35B |
Fixed-wing, single engine | Aerospace Trust Management LLC Trustee Wilmington, Delaware |
Standard | 2026-06-08 | ValidFAA registration status code V: Valid registration. All codes |
| N447NA | Beech F33C |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-12 | ValidFAA registration status code V: Valid registration. All codes |
| N249WL | Beech F33C |
Fixed-wing, single engine | Southern Aircraft Consultancy INC Trustee Casper, Wyoming |
Standard | 2026-02-06 | ValidFAA registration status code V: Valid registration. All codes |
| N964P | Beech A36 |
Fixed-wing, single engine | Bonanza 964 LLC Davie, Florida |
Standard | 2026-01-24 | ValidFAA registration status code V: Valid registration. All codes |
| N30VT | Beech V35B |
Fixed-wing, single engine | Plane Fun INC Tr (Trustee) Snellville, Georgia |
Standard | 2024-12-17 | ValidFAA registration status code V: Valid registration. All codes |
| N8816X | Beech F33A |
Fixed-wing, single engine | Sky West Aviation INC Trustee Albuquerque, New Mexico |
Standard | 2022-08-25 | ValidFAA registration status code V: Valid registration. All codes |
| N98MR | Beech V35B |
Fixed-wing, single engine | Aviato LLC Heath, Texas |
Standard | 2022-07-16 | ValidFAA registration status code V: Valid registration. All codes |
| N600EJ | Navion NAVION H |
Fixed-wing, single engine | Qualitair LLC Trustee Michelstadt, |
Standard | 2022-05-13 | ValidFAA registration status code V: Valid registration. All codes |
| N721W | Beech V35B |
Fixed-wing, single engine | Top Flight Aviation LLC Kingfisher, Oklahoma |
Standard | 2022-04-25 | ValidFAA registration status code V: Valid registration. All codes |
| N18275 | Beech A36 |
Fixed-wing, single engine | Co-owned owner Louisiana |
Standard | 2021-08-12 | ValidFAA registration status code V: Valid registration. All codes |
| N545GM | Beech V35B |
Fixed-wing, single engine | International Air Services INC Trustee Carson City, Nevada |
Standard | 2021-05-06 | ValidFAA registration status code V: Valid registration. All codes |
| N65SH | Beech F33C |
Fixed-wing, single engine | 65 Sierra Hotel LLC Wilmington, Delaware |
Standard | 2021-04-15 | ValidFAA registration status code V: Valid registration. All codes |
| N35BN | Beech V35B |
Fixed-wing, single engine | Aerospace Trust Management LLC Trustee Wilmington, Delaware |
Standard | 2020-10-07 | ValidFAA registration status code V: Valid registration. All codes |
| N961SF | Beech S35 |
Fixed-wing, single engine | Bdr Aviation LLC Ponte Vedra Beach, Florida |
Standard | 2020-09-22 | ValidFAA registration status code V: Valid registration. All codes |
| N518M | Beech V35B |
Fixed-wing, single engine | Individual owner New York |
Standard | 2019-06-18 | ValidFAA registration status code V: Valid registration. All codes |
| N488JF | Beech A45 |
Fixed-wing, single engine | Mentoraire LLC Lake Forest, California |
Standard | 2018-12-15 | ValidFAA registration status code V: Valid registration. All codes |
| N34FU | Beech D-45 |
Fixed-wing, single engine | Individual owner California |
Standard | 2018-08-30 | ValidFAA registration status code V: Valid registration. All codes |
| N974CC | Beech S35 |
Fixed-wing, single engine | Plane Fun INC Tr Trustee Snellville, Georgia |
Standard | 2018-08-13 | ValidFAA registration status code V: Valid registration. All codes |
| N6999N | Beech V35B |
Fixed-wing, single engine | 3V1 LLC Pensacola, Florida |
Standard | 2017-08-08 | ValidFAA registration status code V: Valid registration. All codes |
| N675BW | Beech V35B |
Fixed-wing, single engine | Individual owner Virginia |
Standard | 2016-02-29 | ValidFAA registration status code V: Valid registration. All codes |
| N1248D | Beech C-33A |
Fixed-wing, single engine | Individual owner Florida |
Standard | 2015-10-29 | ValidFAA registration status code V: Valid registration. All codes |
| N17766 | Beech A36 |
Fixed-wing, single engine | Elworthy Steven M Huntington Beach, California |
Standard | 2010-06-28 | ValidFAA registration status code V: Valid registration. All codes |
| N45US | Beech F33A |
Fixed-wing, single engine | Flight Operations LLC Hollister, Missouri |
Standard | 2010-04-16 | ValidFAA registration status code V: Valid registration. All codes |
| N9066S | Beech A36 |
Fixed-wing, single engine | Power Flow Systems INC Daytona Beach, Florida |
Standard | 2007-08-11 | 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.