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

Continental TSIO-520-EB

6 aircraft on the U.S. register carry a Continental TSIO-520-EB engine, rated at about 300 horsepower. The Cessna 335 is the model most often fitted with it (4 aircraft). The aircraft carrying it were built between 1976 and 1980.

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-EB. FAA spelling: TSIO-520-EB.

Fitted to model families

Cessna 3354Cessna 3401Cessna T-3101

Cessna 335 · Cessna 340 · Cessna T-310

Where they are owner's state

Texas1Pennsylvania1Oklahoma1New Jersey1Mississippi1Delaware1

Kind of aircraft

Piston twins6 (100%)

When the aircraft were built by decade

012344197021980

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

The design is held under 1 type certificate (E8CE, held by Continental Aerospace Technologies, INC.). The FAA has issued 31 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 83 failure reports with the FAA since 1995, 11 of them in the last ten years.

FAA orders 31 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
2016-09-152016-16-12 · Cylinder assemblies · engine
2014-04-252014-05-29 · SAP replacement parts manufacturer approval (PMA) investment cast cylinder assemblies · engine

All orders naming the Continental TSIO-520-EB

Failure reports 83 since · what operators and shops told the FAA

048111596020713222

Parts most often reported as the reports name them

Cylinder16Cylinder Head11Engine4Bellcrank3Pump3Magneto2Screw2Skin2Spar2Turbocharger2

Latest reports

2022-07-15Cylinder: leaking
2022-04-27Crankshaft: broken
2021-04-20Distributor Blk: corroded
2021-04-14Engine: power loss
2019-03-02Signal Cond Unit: defective

Certificates and bulletins

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

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
Where they are
Biggest operators
Airworthiness

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

Aircraft newest certificates first · 6

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N116JW Cessna
335
Fixed-wing, multi-engine Acvtg Aviation LLC
Wilmington, Delaware
Standard 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N802MC Cessna
335
Fixed-wing, multi-engine Runaway Plane LLC
Oklahoma City, Oklahoma
Standard 2023-04-05 ValidFAA registration status code V: Valid registration. All codes
N87443 Cessna
T310R
Fixed-wing, multi-engine Keystone Aerial Surveys INC
Philadelphia, Pennsylvania
Standard 2019-09-14 ValidFAA registration status code V: Valid registration. All codes
N335KH Cessna
335
Fixed-wing, multi-engine Serafini Transportation LLC
Ringwood, New Jersey
Standard 2018-10-04 ValidFAA registration status code V: Valid registration. All codes
N4125G Cessna
340A
Fixed-wing, multi-engine Seeding Operations and Atmospheric Research (Soar)
San Angelo, Texas
Standard 2016-01-11 ValidFAA registration status code V: Valid registration. All codes
N335SM Cessna
335
Fixed-wing, multi-engine Mf Property Management LLC
Hattiesburg, Mississippi
Standard 2013-11-13 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.