Engines · piston (reciprocating) · data as of October 5, 2026

Continental O-300 series

6,622 aircraft on the U.S. register carry a Continental O-300 series engine, rated at about 145 horsepower. The Cessna 172 Skyhawk is the model most often fitted with it (6,073 aircraft). The aircraft carrying it were built between 1949 and 2021.

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 O-300 series. FAA spelling: 0-300 SER.

Fitted to model families

Cessna 172 Skyhawk6,073Cessna 170371Maule M-447Cessna 175 Skylark41Globe GC-1 Swift28Aeronca 158Temco GC-18Cessna 1507Maule BEE DEE M-43Piper PA-18 Super Cub2Piper PA-24 Comanche2American Champion Aircraft 7 Citabria and Champ1

Cessna 172 Skyhawk · Cessna 170 · Maule M-4 · Cessna 175 Skylark · Globe GC-1 Swift · Aeronca 15 · Temco GC-1 · Cessna 150 · Maule BEE DEE M-4 · Piper PA-18 Super Cub

Where they are owner's state

Texas621California469Florida341Washington306Alaska266Michigan222Ohio217Georgia203Oregon194North Carolina192

Kind of aircraft

Piston singles6,620 (100%)Piston twins1 (0.0%)Helicopters1 (0.0%)

When the aircraft were built by decade

What the FAA has certified, ordered and been told about the Continental O-300 series the component layer

No FAA order in the current files names this engine series. Operators and repair shops have filed 38 failure reports with the FAA since 1995, 5 of them in the last ten years.

Failure reports 38 since · what operators and shops told the FAA

Parts most often reported as the reports name them

Baffle4Cylinder3Bulkhead2Connecting Rod2Stringer2Wheel2Adapter1Axle1Battery1Bearing Cage1

Latest reports

2019-11-19Line: broken

2019-05-10Cylinder: cracked

2013-02-22Counterweight: loose

2012-07-10Cylinder: cracked

2011-08-08Cylinder: broken

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

Cessna 172 Skyhawk 6,073 with this engine series
Cessna 170 371 with this engine series
Maule M-4 47 with this engine series
Cessna 175 Skylark 41 with this engine series
Globe GC-1 Swift 28 with this engine series
Aeronca 15 8 with this engine series
Temco GC-1 8 with this engine series
Cessna 150 7 with this engine series

Where they are

Texas 621 of these aircraft
California 469 of these aircraft
Florida 341 of these aircraft
Washington 306 of these aircraft
Alaska 266 of these aircraft

Biggest operators

United States Air Force Owner 10 of these aircraft
Bas Part Sales LLC 9 of these aircraft
Sutton Aircraft Salvage LLC 8 of these aircraft
Dmac Aircraft LLC 8 of these aircraft
United States Air Force 7 of these aircraft

Airworthiness

Failure reports on the Continental O-300 series 38 reports since 1995

Analytics

These connections as data: /graph/engine/continental-o-300-series.json · about the eFlight graph.

Aircraft newest certificates first · 6,622

Tail no.	Maker and model	Group	Owner and base	Certificate	Registered	Status
N5390T	Cessna 172E	Fixed-wing, single engine	Individual owner Washington	Standard	2026-02-23	Valid
N6177E	Cessna 172	Fixed-wing, single engine	Individual owner California	Standard	2026-02-23	Valid
N5579R	Cessna 172F	Fixed-wing, single engine	Individual owner Pennsylvania	Standard	2026-02-21	Valid
N7865X	Cessna 172B	Fixed-wing, single engine	Individual owner Alabama	Standard	2026-02-21	Valid
N6936A	Cessna 172	Fixed-wing, single engine	Individual owner Minnesota	Standard	2026-02-19	Valid
N7035E	Cessna 175A	Fixed-wing, single engine	Co-owned owner Utah	Standard	2026-02-19	Valid
N8366X	Cessna 172C	Fixed-wing, single engine	Ajm Aviation Ventures LLC Seal Beach, California	Standard	2026-02-19	Valid
N61PK	Globe GC-1B	Fixed-wing, single engine	Southern Aircraft Consultancy INC Trustee Casper, Wyoming	Standard	2026-02-18	Valid
N2421L	Cessna 172H	Fixed-wing, single engine	Co-owned owner Indiana	Standard	2026-02-17	Valid
N4398L	Cessna 172G	Fixed-wing, single engine	Sutton Aircraft Salvage LLC Palmer, Alaska	Standard	2026-02-17	Valid
N8171L	Cessna 172H	Fixed-wing, single engine	Sam Aviation LLC Long Beach, California	Standard	2026-02-17	Valid
N3648L	Cessna 172G	Fixed-wing, single engine	Individual owner North Carolina	Standard	2026-02-15	Valid
N5895R	Cessna 172G	Fixed-wing, single engine	Co-owned owner Texas	Standard	2026-02-15	Valid
N6821X	Cessna 172A	Fixed-wing, single engine	Co-owned owner Nevada	Standard	2026-02-14	Valid
N7221T	Cessna 172A	Fixed-wing, single engine	Co-owned owner Iowa	Standard	2026-02-14	Valid
N1252H	Aeronca 15AC	Fixed-wing, single engine	Individual owner Texas	Standard	2026-02-13	Valid
N3957S	Cessna 172E	Fixed-wing, single engine	Southern Aircraft Consultancy INC Trustee Casper, Wyoming	Standard	2026-02-12	Valid
N8440X	Cessna 172C	Fixed-wing, single engine	Individual owner Washington	Standard	2026-02-12	Valid
N7363T	Cessna 172A	Fixed-wing, single engine	Individual owner Texas	Standard	2026-02-11	Valid
N7414A	Cessna 172	Fixed-wing, single engine	Individual owner Washington	Standard	2026-02-11	Valid
N8211B	Cessna 172	Fixed-wing, single engine	Hayfield Technical Services LLC Tahlequah, Oklahoma	Standard	2026-02-10	Valid
N2506Y	Cessna 172D	Fixed-wing, single engine	Touching Clouds LLC Bridgeview, Illinois	Standard	2026-02-09	Valid
N2726U	Cessna 172D	Fixed-wing, single engine	Sampan Aviation LLC Greenville, Texas	Standard	2026-02-08	Valid
N7690X	Cessna 172B	Fixed-wing, single engine	Neu Aviation LLC Benton, Louisiana	Standard	2026-02-08	Valid
N3678R	Cessna 172E	Fixed-wing, single engine	Carl Aviation LLC Lake Havasu City, Arizona	Standard	2026-02-07	Valid
N1622F	Cessna 172H	Fixed-wing, single engine	N1622F LLC Grand Prairie, Texas	Standard	2026-02-06	Valid
N8417U	Cessna 172F	Fixed-wing, single engine	Peninsula Aero Technology INC Kenai, Alaska	Standard	2026-02-06	Valid
N6141E	Cessna 172	Fixed-wing, single engine	Abpz LLC Mc Veytown, Pennsylvania	Standard	2026-02-05	Valid
N8597U	Cessna 172F	Fixed-wing, single engine	Mrd Aero LLC Manheim, Pennsylvania	Standard	2026-02-04	Valid
N4284F	Cessna 172	Fixed-wing, single engine	Individual owner Washington	Standard	2026-01-31	Valid
N2462L	Cessna 172H	Fixed-wing, single engine	Sneed Associates LLC Fort Morgan, Colorado	Standard	2026-01-30	Valid
N3006A	Cessna 170B	Fixed-wing, single engine	Southern Aircraft Consultancy INC Trustee Casper, Wyoming	Standard	2026-01-29	Valid
N7998X	Cessna 172B	Fixed-wing, single engine	Airborne One LLC Kalispell, Montana	Standard	2026-01-29	Valid
N3955S	Cessna 172E	Fixed-wing, single engine	Co-owned owner Missouri	Standard	2026-01-28	Valid
N6210E	Cessna 172	Fixed-wing, single engine	Individual owner North Carolina	Standard	2026-01-28	Valid
N9769A	Cessna 170A	Fixed-wing, single engine	Individual owner Arizona	Standard	2026-01-27	Valid
N1733F	Cessna 172H	Fixed-wing, single engine		Standard	2026-01-26	Valid
N7219T	Cessna 172A	Fixed-wing, single engine	Individual owner Georgia	Standard	2026-01-26	Valid
N8960B	Cessna 172	Fixed-wing, single engine	Individual owner Arizona	Standard	2026-01-25	Valid
N6605A	Cessna 172	Fixed-wing, single engine	Co-owned owner Texas	Standard	2026-01-24	Valid
N8088X	Cessna 172B	Fixed-wing, single engine	Sky 66 Aero LLC Talala, Oklahoma	Standard	2026-01-23	Valid
N12026	Maule M-4	Fixed-wing, single engine	Individual owner Minnesota	Standard	2026-01-22	Valid
N5575T	Cessna 172E	Fixed-wing, single engine	Hollister Jet Center INC Hollister, California	Standard	2026-01-22	Valid
N5005A	Cessna 172	Fixed-wing, single engine	Individual owner Alaska	Standard	2026-01-21	Valid
N9139B	Cessna 172	Fixed-wing, single engine	Co-owned owner Texas	Standard	2026-01-20	Valid
N2917U	Cessna 172D	Fixed-wing, single engine	Celebrate Freedom Foundation West Columbia, South Carolina	Standard	2026-01-19	Valid
N6926A	Cessna 172	Fixed-wing, single engine	Trident Aviation LLC Kalispell, Montana	Restricted	2026-01-19	Valid
N3557S	Cessna 172E	Fixed-wing, single engine	Co-owned owner Alaska	Standard	2026-01-16	Valid
N905HR	Coughlin Jerry E W-10 TAILWIND	Fixed-wing, single engine	Individual owner California	Experimental	2026-01-15	Valid
N6077R	Cessna 172G	Fixed-wing, single engine	Individual owner Illinois	Standard	2026-01-14	Valid
N8212L	Cessna 172H	Fixed-wing, single engine	Co-owned owner Colorado	Standard	2026-01-14	Valid
N5691R	Cessna 172F	Fixed-wing, single engine	Base 2 Final Fleet LLC Mckinney, Texas	Standard	2026-01-13	Valid
N7515T	Cessna 172A	Fixed-wing, single engine	Gbl Leasing LLC Gun Barrel City, Texas	Standard	2026-01-12	Valid
N8593B	Cessna 172	Fixed-wing, single engine	Andys Auto Sales LLC Caroline, Wisconsin	Standard	2026-01-12	Valid
N6375E	Cessna 172	Fixed-wing, single engine	Individual owner Missouri	Standard	2026-01-08	Valid
N7606X	Cessna 172B	Fixed-wing, single engine	Withheld at owner's request	Standard	2026-01-08	Valid
N2579U	Cessna 172D	Fixed-wing, single engine	Hann Aviation LLC Yuma, Arizona	Standard	2026-01-07	Valid
N8432U	Cessna 172F	Fixed-wing, single engine	Individual owner North Carolina	Standard	2026-01-06	Valid
N8886B	Cessna 172	Fixed-wing, single engine	Co-owned owner Michigan	Standard	2026-01-06	Valid
N172BH	Cessna 172E	Fixed-wing, single engine	Individual owner Washington	Standard	2026-01-05	Valid
N3728L	Cessna 172G	Fixed-wing, single engine	N3728L LLC Statesville, North Carolina	Standard	2026-01-05	Valid
N8046B	Cessna 172	Fixed-wing, single engine	Co-owned owner Alaska	Standard	2026-01-05	Valid
N81775	Cessna 172H	Fixed-wing, single engine	Flying B Aviation LLC Waynesboro, Tennessee	Standard	2026-01-05	Valid
N2956U	Cessna 172D	Fixed-wing, single engine	Individual owner Mississippi	Standard	2026-01-04	Valid
N2426L	Cessna 172H	Fixed-wing, single engine	588 Delta LLC Seminole, Oklahoma	Standard	2026-01-03	Valid
N5864A	Cessna 172	Fixed-wing, single engine	S Aviation LLC Wisconsin Dells, Wisconsin	Standard	2026-01-03	Valid
N8300U	Cessna 172F	Fixed-wing, single engine	Co-owned owner Virginia	Standard	2026-01-03	Valid
N3804R	Cessna 172H	Fixed-wing, single engine	Individual owner Illinois	Standard	2025-12-27	Valid
N2585L	Cessna 172H	Fixed-wing, single engine	Aerospace Quality LLC Piggott, Arkansas	Standard	2025-12-22	Valid
N7147A	Cessna 172	Fixed-wing, single engine	Air Cover Academy LLC Frankford, Missouri	Standard	2025-12-22	Valid
N129AH	Cessna 172E	Fixed-wing, single engine	N388Vr LLC Olalla, Washington	Standard	2025-12-20	Valid
N3918R	Cessna 172H	Fixed-wing, single engine	Individual owner Texas	Standard	2025-12-20	Valid
N3818R	Cessna 172H	Fixed-wing, single engine	Ruddle Aviation LLC Lawrenceburg, Tennessee	Standard	2025-12-19	Valid
N8202L	Cessna 172H	Fixed-wing, single engine	Horizon Flights CORP Henderson, Nevada	Standard	2025-12-19	Reports overdue
N3898R	Cessna 172H	Fixed-wing, single engine	Overlord Aviation LLC Melbourne, Florida	Standard	2025-12-18	Valid
N4047F	Cessna 172	Fixed-wing, single engine	Sierra Aviation LLC Fond du Lac, Wisconsin	Standard	2025-12-17	Valid
N6777A	Cessna 172	Fixed-wing, single engine	Individual owner Michigan	Standard	2025-12-16	Valid
N7951U	Cessna 172F	Fixed-wing, single engine	Co-owned owner Indiana	Standard	2025-12-15	Valid
N3750R	Cessna 172H	Fixed-wing, single engine	N3750R LLC Guthrie, Oklahoma	Standard	2025-12-13	Valid
N6980X	Cessna 172B	Fixed-wing, single engine	Individual owner Kentucky	Standard	2025-12-12	Valid
N2699L	Cessna 172H	Fixed-wing, single engine	98X LLC Caddo Mills, Texas	Standard	2025-12-11	Valid
N26BF	Cessna 172	Fixed-wing, single engine	Individual owner North Carolina	Standard	2025-12-11	Valid
N3878S	Cessna 172E	Fixed-wing, single engine	Skyhawk172 LLC Gainesville, Texas	Standard	2025-12-11	Valid
N3890L	Cessna 172G	Fixed-wing, single engine	Texas Yellow Rose Planes LLC Fort Worth, Texas	Standard	2025-12-11	Valid
N4660L	Cessna 172G	Fixed-wing, single engine	Individual owner Washington	Standard	2025-12-11	Valid
N5716R	Cessna 172F	Fixed-wing, single engine	Individual owner Arkansas	Standard	2025-12-11	Valid
N6209E	Cessna 172	Fixed-wing, single engine	Individual owner New York	Standard	2025-12-11	Valid
N6341E	Cessna 172	Fixed-wing, single engine	Hansen'S Garage LLC Spring City, Utah	Standard	2025-12-11	Valid
N7879X	Cessna 172B	Fixed-wing, single engine	Co-owned owner Arkansas	Standard	2025-12-11	Valid
N8016A	Cessna 170B	Fixed-wing, single engine	Pak Holdings LLC Anchorage, Alaska	Standard	2025-12-11	Valid
N7646X	Cessna 172B	Fixed-wing, single engine	Co-owned owner Indiana	Multiple	2025-12-10	Valid
N8242X	Cessna 172C	Fixed-wing, single engine	Individual owner Virginia	Standard	2025-12-10	Valid
N1961B	Cessna 172B	Fixed-wing, single engine	Goose Aviation LLC Cumberland, Wisconsin	Standard	2025-12-09	Valid
N2469Y	Cessna 172D	Fixed-wing, single engine	Individual owner Texas	Standard	2025-12-09	Valid
N1607F	Cessna 172H	Fixed-wing, single engine	Individual owner Florida	Standard	2025-12-08	Valid
N3846V	Cessna 170A	Fixed-wing, single engine	Co-owned owner Oklahoma	Standard	2025-12-08	Valid
N4452L	Cessna 172G	Fixed-wing, single engine	Co-owned owner Arizona	Standard	2025-12-08	Valid
N5430T	Cessna 172E	Fixed-wing, single engine	Reitz Enterprise LLC Goliad, Texas	Standard	2025-12-08	Valid
N7325T	Cessna 172A	Fixed-wing, single engine	Individual owner Washington	Standard	2025-12-06	Valid
N2523Y	Cessna 172D	Fixed-wing, single engine	Co-owned owner Michigan	Standard	2025-12-05	Valid

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.