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

Continental TSIO-520-B

9 aircraft on the U.S. register carry a Continental TSIO-520-B engine, rated at about 285 horsepower. The Cessna T-310 is the model most often fitted with it (6 aircraft). The aircraft carrying it were built between 1966 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 TSIO-520-B. FAA spelling: TSIO-520-B.

Fitted to model families

Cessna T-3106Cessna 3202Cessna 3401

Cessna T-310 · Cessna 320 · Cessna 340

Where they are owner's state

Wyoming3Nevada2Washington1Oklahoma1Montana1Michigan1

Kind of aircraft

Piston twins9 (100%)

When the aircraft were built by decade

012454196051970

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

The design is held under 1 type certificate (E8CE, held by Continental Aerospace Technologies, INC.). The FAA has issued 37 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 25 failure reports with the FAA since 1995, 4 of them in the last ten years.

FAA orders 37 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
2016-09-152016-16-12 · Cylinder assemblies · engine

All orders naming the Continental TSIO-520-B

Failure reports 25 since · what operators and shops told the FAA

01245950007120

Parts most often reported as the reports name them

Cylinder Head2Engine2Landing Gear2Actuator1Bellcrank1Bolt1Bracket1Camshaft1Capacitor1Crankshaft1

Latest reports

2020-09-10Switch: broken
2015-12-20Piston Ring: broken
2014-10-03Cylinder Head: leaking
2013-07-24Cylinder Head: damaged
2009-11-23Landing Gear: stuck

Certificates and bulletins

E8CEType certificate held by Continental Aerospace Technologies, INC. · 31 models listed · revised April 6, 2020

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-tsio-520-b.json · about the eFlight graph.

Aircraft newest certificates first · 9

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N685CP Cessna
T310R
Fixed-wing, multi-engine Southern Aircraft Consultancy INC Trustee
Casper, Wyoming
Standard 2026-02-20 ValidFAA registration status code V: Valid registration. All codes
N320MS Cessna
320E
Fixed-wing, multi-engine Consulat INC
Cheyenne, Wyoming
Standard 2023-10-11 ValidFAA registration status code V: Valid registration. All codes
N3494Q Cessna
320E
Fixed-wing, multi-engine Rodcon Aircraft Sales LLC
Kalispell, Montana
Standard 2023-05-15 ValidFAA registration status code V: Valid registration. All codes
N5793M Cessna
T-310P
Fixed-wing, multi-engine Coxbill Farms INC
Torrington, Wyoming
Standard 2023-04-28 ValidFAA registration status code V: Valid registration. All codes
N486MH Cessna
340A
Fixed-wing, multi-engine Mh Group LLC
Duncan, Oklahoma
Standard 2021-10-18 ValidFAA registration status code V: Valid registration. All codes
N363RM Cessna
T310R
Fixed-wing, multi-engine Mash Kity J LLC
Grand Rapids, Michigan
Standard 2020-12-22 ValidFAA registration status code V: Valid registration. All codes
N969TH Cessna
T310R
Fixed-wing, multi-engine Mgi Proflight LLC
Las Vegas, Nevada
Standard 2017-07-25 ValidFAA registration status code V: Valid registration. All codes
N310HM Cessna
T310R
Fixed-wing, multi-engine International Air Services INC Trustee
Carson City, Nevada
Standard 2017-03-10 ValidFAA registration status code V: Valid registration. All codes
N5825M Cessna
T-310P
Fixed-wing, multi-engine Individual owner
Washington
Standard 2011-03-15 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.