The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 2026

Continental IO-520-B

16 aircraft on the U.S. register carry a Continental IO-520-B engine, rated at about 285 horsepower. The Beechcraft A36 Bonanza is the model most often fitted with it (3 aircraft). The aircraft carrying it were built between 1965 and 2007.

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-B. FAA spelling: IO-520-B.

Fitted to model families

Beechcraft A36 Bonanza3Beechcraft V35 Bonanza3Navion NAVION G2Beechcraft 35 Bonanza and Debonair1Beechcraft 36 Bonanza1Beechcraft 95 Travel Air and Baron 551Beechcraft E331Beechcraft F33 Bonanza1Beechcraft S35 Bonanza1Beechcraft G36 Bonanza1Navion NAVION H1

Beechcraft A36 Bonanza · Beechcraft V35 Bonanza · Navion NAVION G · Beechcraft 35 Bonanza and Debonair · Beechcraft 36 Bonanza · Beechcraft 95 Travel Air and Baron 55 · Beechcraft E33 · Beechcraft F33 Bonanza · Beechcraft S35 Bonanza · Beechcraft G36 Bonanza

Where they are owner's state

Texas3California3Virginia2Tennessee2Wyoming1South Carolina1Oregon1Michigan1Georgia1Colorado1

Kind of aircraft

Piston singles15 (94%)Piston twins1 (6%)

When the aircraft were built by decade

024799196031970119801199012000

What the FAA has certified, ordered and been told about the Continental IO-520-B the component layer

The design is held under 1 type certificate (E5CE, held by Continental Aerospace Technologies, INC.). The FAA has issued 34 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 76 failure reports with the FAA since 1995, 5 of them in the last ten years.

FAA orders 34 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

All orders naming the Continental IO-520-B

Failure reports 76 since · what operators and shops told the FAA

049141895000513116

Parts most often reported as the reports name them

Distributor Blk13Cylinder5Crankcase4Spar4Alternator3Bracket3Bolt2Control Cable2Distributor2Fitting2

Latest reports

2016-12-08Lifter: damaged
2013-10-27Circuit Breaker: failed
2012-09-11Check Valve: obstructed
2011-08-24Bolt: corroded
2007-09-19Transmitter: unreliable

Certificates and bulletins

E5CEType certificate held by Continental Aerospace Technologies, INC. · 18 models listed · revised March 8, 2022

Safety bulletins 10 · 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
Where they are
Biggest operators
Airworthiness

These connections as data: /graph/engine/continental-io-520-b.json · about the eFlight graph.

Aircraft newest certificates first · 16

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N167TF Beech
V35
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2025-10-14 ValidFAA registration status code V: Valid registration. All codes
N336NA Beech
A36
Fixed-wing, single engine Individual owner
California
Standard 2025-09-26 ValidFAA registration status code V: Valid registration. All codes
N8921U Beech
S35
Fixed-wing, single engine Individual owner
California
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N2521T Navion
NAVION H
Fixed-wing, single engine Individual owner
Virginia
Standard 2024-07-09 ValidFAA registration status code V: Valid registration. All codes
N843CM Beech
A36
Fixed-wing, single engine Lamar Lending LLC
League City, Texas
Standard 2023-08-24 ValidFAA registration status code V: Valid registration. All codes
N7610N Beech
95-B55 (T42A)
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2023-07-18 ValidFAA registration status code V: Valid registration. All codes
N2433T Navion
NAVION G
Fixed-wing, single engine NW Aircraft Sales & Lesing LLC
Scappoose, Oregon
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N2497T Navion
NAVION G
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-02-16 ValidFAA registration status code V: Valid registration. All codes
N2054W Beech
V35
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-01-05 ValidFAA registration status code V: Valid registration. All codes
N6655G Beech
36
Fixed-wing, single engine Right Wing Left Wing Flyers LLC
Cleveland, Georgia
Standard 2022-08-04 ValidFAA registration status code V: Valid registration. All codes
N858AL Beech
A36
Fixed-wing, single engine Individual owner
California
Standard 2021-11-27 ValidFAA registration status code V: Valid registration. All codes
N1259M Beech
35-C33A
Fixed-wing, single engine L A M Capital Management LLC
Sheridan, Wyoming
Standard 2019-06-21 ValidFAA registration status code V: Valid registration. All codes
N10CA Hawker Beechcraft Corp
G36
Fixed-wing, single engine Individual owner
Texas
Standard 2018-10-26 ValidFAA registration status code V: Valid registration. All codes
N277F Beech
E33C
Fixed-wing, single engine Co-owned owner
Texas
Standard 2017-02-14 ValidFAA registration status code V: Valid registration. All codes
N95WD Beech
F33A
Fixed-wing, single engine Individual owner
South Carolina
Standard 2016-12-28 ValidFAA registration status code V: Valid registration. All codes
N4856J Beech
V35
Fixed-wing, single engine N4856J LLC
Boulder, Colorado
Standard 2015-09-02 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.