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

Continental C85-15F

1 aircraft on the U.S. register carry a Continental C85-15F engine, rated at about 85 horsepower. The Lawrence W Thomas CHRISTAVIA MK1 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 C85-15F. FAA spelling: C85-15F.

Fitted to model families

Lawrence W Thomas CHRISTAVIA MK11

Lawrence W Thomas CHRISTAVIA MK1

Where they are owner's state

South Carolina1

Kind of aircraft

Piston singles1 (100%)

When the aircraft were built by decade

0001112010

What the FAA has certified, ordered and been told about the Continental C85-15F the component layer

The design is held under 1 type certificate (E-233, held by Continental Aerospace Technologies, INC.). The FAA has issued 4 airworthiness directives (orders that owners must comply with) that name this engine series.

FAA orders 4 airworthiness directives · newest first

1996-02-1394-05-05 R1 · Cylinder Rocker · engine
1993-12-1493-22-05 · Carburetor Air Intake Housing Assemblies · engine
1981-04-0181-07-06 · AC Fuel Pumps · engine
49-50-01 · Generator Drive Coupling Rubber Disc · engine

Certificates and bulletins

E-233Type certificate held by Continental Aerospace Technologies, INC. · 31 models listed · revised September 19, 2022

Safety bulletins 4 · advice, not orders

2018-09-10NE-18-27 · POWERPLANT Rocker Shaft Boss Inspection
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
1998-06-10CE-98-21R1 ·

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

These connections as data: /graph/engine/continental-c85-15f.json · about the eFlight graph.

Aircraft newest certificates first · 1

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N222PN Lawrence W Thomas
CHRISTAVIA MK1
Fixed-wing, single engine Individual owner
South Carolina
Experimental 2013-08-20 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.