The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of November 6, 2026

Continental TSIOF550-D

1 aircraft on the U.S. register carry a Continental TSIOF550-D engine, rated at about 350 horsepower. The Cobalt Aircraft Industries Inc CO50 VALKYRIE is the model most often fitted with it (1 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 TSIOF550-D. FAA spelling: TSIOF550-D.

Fuel: 100LL avgas.

Fitted to model families

Cobalt Aircraft Industries Inc CO50 VALKYRIE1
Model families, as a table
aircraft
Cobalt Aircraft Industries Inc CO50 VALKYRIE1

Cobalt Aircraft Industries Inc CO50 VALKYRIE

Where they are owner's state

By state, as a table
aircraft
Montana1

Kind of aircraft

By kind, as a table
aircraftshare
Piston singles1100%

When the aircraft were built by decade

0001112010
By decade built, as a table
aircraft
20101

What the FAA has certified, ordered and been told about the Continental TSIOF550-D the component layer

The design is held under 1 type certificate (E5SO, held by Continental Aerospace Technologies, INC.). The FAA has issued 14 airworthiness directives (orders that owners must comply with) that name this engine series.

FAA orders 14 airworthiness directives · newest first

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
2020-09-212020-16-11 · SUMMARY: Reciprocating Cylinder Section · engine
2016-11-182016-21-04 · Oil cooler cross fitting assembly · engine

All orders naming the Continental TSIOF550-D

Approved replacement parts 61 parts manufacturer approvals

Parts a company other than the maker may make for this engine and sell as FAA-approved. The companies holding the most:

Most often: stud (15), bolt (8), tube (6), starter adapter (5), thrubolt (3), starter (3), studded (2), spring (2), pushrod housing (2), intercylinder baffle (2).

Certificates and bulletins

E5SOType certificate held by Continental Aerospace Technologies, INC. · 12 models listed · revised March 31, 2020

Safety bulletins 3 · advice, not orders

2018-06-20NE-18-16 · POWERPLANT Alternator Drive Coupling
2016-03-08NE-16-13 · Powerplant - Prohibited use of sealant
2012-10-31NE-13-04 · Continental Motors, Inc. (CMI) Connecting Rod Piston Pin Bushing Inspection

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

Where they are
Airworthiness

The whole map of how records connect · these connections as data: /graph/engine/continental-tsiof550-d.json.

Aircraft newest certificates first · 1

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N598CA Cobalt Aircraft Industries Inc
CO50 VALKYRIE
Fixed-wing, single engine Dggehrig LLC
Helena, Montana
Experimental 2024-01-16 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), November 6, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.