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

Continental TSIOL-550-C

2 aircraft on the U.S. register carry a Continental TSIOL-550-C engine, rated at about 310 horsepower. The Extra Flugzeugbau Gmbh EA-400 is the model most often fitted with it (2 aircraft).

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 TSIOL-550-C. FAA spelling: TSIOL-550-C.

Fitted to model families

Extra Flugzeugbau Gmbh EA-4002

Extra Flugzeugbau Gmbh EA-400

Where they are owner's state

Oregon2

Kind of aircraft

Piston singles2 (100%)

When the aircraft were built by decade

0012222000

What the FAA has certified, ordered and been told about the Continental TSIOL-550-C the component layer

The design is held under 1 type certificate (E4SO, held by Continental Aerospace Technologies, INC.). The FAA has issued 15 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 4 failure reports with the FAA since 1995, 4 of them in the last ten years.

FAA orders 15 airworthiness directives · newest first

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
2012-02-242012-03-06 · Fuel servo diaphragm · engine

All orders naming the Continental TSIOL-550-C

Failure reports 4 since · what operators and shops told the FAA

00122201102105

Parts most often reported as the reports name them

Oil Filter1Piston1Screen1Wire1

Latest reports

2005-08-11Wire: burned
2002-06-25Screen: failed
2001-10-02Oil Filter: chafed
2001-03-08Piston: broken

Certificates and bulletins

E4SOType certificate held by Continental Aerospace Technologies, INC. · 3 models listed · revised June 1, 2020

Safety bulletins 8 · 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
Airworthiness

These connections as data: /graph/engine/continental-tsiol-550-c.json · about the eFlight graph.

Aircraft newest certificates first · 2

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N70HG Extra Flugzeugbau Gmbh
EA-400
Fixed-wing, single engine Sorpresa LLC
Salem, Oregon
Standard 2022-11-04 ValidFAA registration status code V: Valid registration. All codes
N400EN Extra Flugzeugbau Gmbh
EA-400
Fixed-wing, single engine Xtra Travel LLC
Ashland, Oregon
Standard 2020-07-27 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.