The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 2026

Continental O-300 series

6,623 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.

When the aircraft were built by decade

By decade built, as a table
aircraft
194062
19501,889
19603,524
197014
19803
19902
20003
20201

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

The design is held under 1 type certificate (E-253, held by Continental Aerospace Technologies, INC.). The FAA has issued 7 airworthiness directives (orders that owners must comply with) that name 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.

FAA orders 7 airworthiness directives · newest first

2023-10-262023-17-04 · Reciprocating Engine Oil System · engine
2022-03-292022-04-04 · Reciprocating Engine Oil System · engine
2012-01-242011-26-07 · Engine · engine
2002-07-122002-13-04 · Magneto impulse coupling stop pin · engine
1996-02-1394-05-05 R1 · Cylinder Rocker · engine
1993-08-1293-10-02 · Missing Cylinder Valve Retainer Key · engine

All orders naming the Continental O-300 series

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

025810960511219
Failure reports by year, as a table
reports
961
013
024
0310
043
052
062
075
082
091
111
121
131
192

Parts most often reported as the reports name them

Baffle4Cylinder3Bulkhead2Connecting Rod2Stringer2Wheel2Adapter1Axle1Battery1Bearing Cage1
Parts most reported, as a table
reports
Baffle4
Cylinder3
Bulkhead2
Connecting Rod2
Stringer2
Wheel2
Adapter1
Axle1
Battery1
Bearing Cage1

Latest reports

2019-11-19Line: broken
2019-05-10Cylinder: cracked
2013-02-22Counterweight: loose
2012-07-10Cylinder: cracked
2011-08-08Cylinder: broken

Certificates and bulletins

E-253Type certificate held by Continental Aerospace Technologies, INC. · 8 models listed · revised September 19, 2022

Safety bulletins 3 · 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

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

The whole map of how records connect · these connections as data: /graph/engine/continental-o-300-series.json.

Aircraft newest certificates first · 6,623

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N7754X Cessna
172B
Fixed-wing, single engine Individual owner
California
Standard 2024-10-16 ValidFAA registration status code V: Valid registration. All codes
N6755A Cessna
172
Fixed-wing, single engine Individual owner
Nebraska
Standard 2024-10-15 ValidFAA registration status code V: Valid registration. All codes
N7384T Cessna
172A
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-10-11 ValidFAA registration status code V: Valid registration. All codes
N2871U Cessna
172D
Fixed-wing, single engine Co-owned owner
California
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N6975A Cessna
172
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N7833M Cessna
172B
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N8273B Cessna
172
Fixed-wing, single engine Blue Ribbon Aviation LLC
Oakland, Maryland
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N8206U Cessna
172F
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-10-08 ValidFAA registration status code V: Valid registration. All codes
N5360T Cessna
172E
Fixed-wing, single engine Individual owner
Washington
Standard 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N7397T Cessna
172A
Fixed-wing, single engine Directional Holdings LLC
Missoula, Montana
Multiple 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N8125B Cessna
172
Fixed-wing, single engine True Heading LLC
Granite City, Illinois
Standard 2024-10-07 ValidFAA registration status code V: Valid registration. All codes
N5816R Cessna
172G
Fixed-wing, single engine Little Bird Airways LLC
Hamburg, New York
Standard 2024-10-05 ValidFAA registration status code V: Valid registration. All codes
N3148X Cessna
172H
Fixed-wing, single engine Individual owner
Missouri
Standard 2024-10-04 ValidFAA registration status code V: Valid registration. All codes
N5802R Cessna
172G
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N7815X Cessna
172B
Fixed-wing, single engine Co-owned owner
Florida
Standard 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N4281L Cessna
172G
Fixed-wing, single engine Kiger Aviation LLC
Corvallis, Oregon
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N5622A Cessna
172
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N6406B Cessna
172
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N6451E Cessna
172
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N7841X Cessna
172B
Fixed-wing, single engine Individual owner
California
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N9977A Cessna
170A
Fixed-wing, single engine Individual owner
Montana
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N2883U Cessna
172D
Fixed-wing, single engine Paul Aviation LLC
Sault Sainte Marie, Michigan
Standard 2024-09-30 ValidFAA registration status code V: Valid registration. All codes
N3720L Cessna
172G
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-09-30 ValidFAA registration status code V: Valid registration. All codes
N8106X Cessna
172B
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2024-09-30 ValidFAA registration status code V: Valid registration. All codes
N444TF Cessna
172A
Fixed-wing, single engine 4Tf LLC
Missoula, Montana
Multiple 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N4617L Cessna
172G
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N2776L Cessna
172H
Fixed-wing, single engine Rd Aire LLC
Opelika, Alabama
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N3780L Cessna
172G
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N4737T Maule
M-4
Fixed-wing, single engine Fly Buys Inn
Wilmington, Delaware
Standard 2024-09-21 ValidFAA registration status code V: Valid registration. All codes
N7354T Cessna
172A
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2024-09-21 ValidFAA registration status code V: Valid registration. All codes
N1569Y Cessna
172C
Fixed-wing, single engine Individual owner
Texas
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N3710L Cessna
172G
Fixed-wing, single engine
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N8201U Cessna
172F
Fixed-wing, single engine Individual owner
Texas
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N1186F Cessna
172G
Fixed-wing, single engine Individual owner
Kansas
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N1646F Cessna
172H
Fixed-wing, single engine Individual owner
Missouri
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N3275L Cessna
172H
Fixed-wing, single engine Mil2Atp INC
Pikeville, North Carolina
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N3795S Cessna
172E
Fixed-wing, single engine Mil2Atp INC
Pikeville, North Carolina
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N6986X Cessna
172B
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N2430L Cessna
172H
Fixed-wing, single engine Individual owner
Texas
Standard 2024-09-18 ValidFAA registration status code V: Valid registration. All codes
N2748L Cessna
172H
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-09-18 ValidFAA registration status code V: Valid registration. All codes
N3838L Cessna
172G
Fixed-wing, single engine Individual owner
Louisiana
Standard 2024-09-18 ValidFAA registration status code V: Valid registration. All codes
N3898S Cessna
172E
Fixed-wing, single engine Hangar 20 Flying Club LLC
Climax, Michigan
Standard 2024-09-18 ValidFAA registration status code V: Valid registration. All codes
N7306A Cessna
172
Fixed-wing, single engine Individual owner
North Dakota
Restricted 2024-09-18 ValidFAA registration status code V: Valid registration. All codes
N8321U Cessna
172F
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2024-09-18 ValidFAA registration status code V: Valid registration. All codes
N1425F Cessna
172H
Fixed-wing, single engine Co-owned owner
Washington
Standard 2024-09-17 ValidFAA registration status code V: Valid registration. All codes
N3671L Cessna
172G
Fixed-wing, single engine Calmet Aircraft Leasing LLC
Middletown, Delaware
Standard 2024-09-17 ValidFAA registration status code V: Valid registration. All codes
N1535Y Cessna
172C
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2024-09-16 ValidFAA registration status code V: Valid registration. All codes
N3789F Cessna
172H
Fixed-wing, single engine Individual owner
Louisiana
Standard 2024-09-16 ValidFAA registration status code V: Valid registration. All codes
N3825R Cessna
172H
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-09-16 ValidFAA registration status code V: Valid registration. All codes
N8290L Cessna
172H
Fixed-wing, single engine Pretty Plane LLC
Nixa, Missouri
Standard 2024-09-13 ValidFAA registration status code V: Valid registration. All codes
N65172 Cessna
172F
Fixed-wing, single engine Kfam Enterprises LLC
Dover, Delaware
Standard 2024-09-11 ValidFAA registration status code V: Valid registration. All codes
N7629X Cessna
172B
Fixed-wing, single engine Neu Aviation LLC
Benton, Louisiana
Standard 2024-09-11 ValidFAA registration status code V: Valid registration. All codes
N22XX Cessna
172
Fixed-wing, single engine Co-owned owner
Vermont
Standard 2024-09-09 ValidFAA registration status code V: Valid registration. All codes
N3704L Cessna
172G
Fixed-wing, single engine N3704L LLC
Jacksonville, Florida
Standard 2024-09-09 ValidFAA registration status code V: Valid registration. All codes
N2724U Cessna
172D
Fixed-wing, single engine Individual owner
New York
Standard 2024-09-07 ValidFAA registration status code V: Valid registration. All codes
N5857R Cessna
172G
Fixed-wing, single engine Baymax Aviation LLC
Ronkonkoma, New York
Standard 2024-09-04 ValidFAA registration status code V: Valid registration. All codes
N4467L Cessna
172G
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2024-08-31 ValidFAA registration status code V: Valid registration. All codes
N9107B Cessna
172
Fixed-wing, single engine Grace Community Church
Fremont, Ohio
Standard 2024-08-31 ValidFAA registration status code V: Valid registration. All codes
N4305L Cessna
172G
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-08-30 ValidFAA registration status code V: Valid registration. All codes
N4298F Cessna
172
Fixed-wing, single engine Co-owned owner
Colorado
Multiple 2024-08-29 ValidFAA registration status code V: Valid registration. All codes
N8443U Cessna
172F
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-08-29 ValidFAA registration status code V: Valid registration. All codes
N2595U Cessna
172D
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N7100A Cessna
172
Fixed-wing, single engine Noel Roberto Vallejo LLC
Orem, Utah
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N7341T Cessna
172A
Fixed-wing, single engine G & D Holdings LLC
Provo, Utah
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N7520X Cessna
172B
Fixed-wing, single engine Sunwave Land LLC
Big Spring, Texas
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N7966B Cessna
172
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-08-28 ValidFAA registration status code V: Valid registration. All codes
N3656S Cessna
172E
Fixed-wing, single engine Co-owned owner
Washington
Standard 2024-08-26 ValidFAA registration status code V: Valid registration. All codes
N6044R Cessna
172G
Fixed-wing, single engine Individual owner
Texas
Standard 2024-08-26 ValidFAA registration status code V: Valid registration. All codes
N2440U Cessna
172D
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2024-08-25 ValidFAA registration status code V: Valid registration. All codes
N8112U Cessna
172F
Fixed-wing, single engine Haleco LLC
Pensacola, Florida
Standard 2024-08-25 ValidFAA registration status code V: Valid registration. All codes
N8314X Cessna
172C
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-08-24 ValidFAA registration status code V: Valid registration. All codes
N3906R Cessna
172H
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N7294A Cessna
172
Fixed-wing, single engine Piston Aviation LLC
Saint Charles, Missouri
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N7408A Cessna
172
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N7763T Cessna
172A
Fixed-wing, single engine Wood Pro Ventures LLC
Justiceburg, Texas
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N8177X Cessna
172B
Fixed-wing, single engine Underground Aviation Group LLC
Elizabethtown, Pennsylvania
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N8653U Cessna
172F
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-08-23 ValidFAA registration status code V: Valid registration. All codes
N221A Cessna
172
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N2943U Cessna
172D
Fixed-wing, single engine Individual owner
California
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N3472C Cessna
170B
Fixed-wing, single engine Total Tailwheel LLC
Weston, Massachusetts
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N4046F Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N4634L Cessna
172G
Fixed-wing, single engine Gs Family Holdings LLC
Middletown, Delaware
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N7711T Cessna
172A
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N7987U Cessna
172F
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2024-08-22 ValidFAA registration status code V: Valid registration. All codes
N5365T Cessna
172E
Fixed-wing, single engine Laperle Aviation LLC
Colebrook, New Hampshire
Standard 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N8154U Cessna
172F
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N8787U Cessna
172F
Fixed-wing, single engine Moody Bible Institute of Chicago
Spokane, Washington
Standard 2024-08-21 ValidFAA registration status code V: Valid registration. All codes
N7946B Cessna
172
Fixed-wing, single engine Individual owner
Iowa
Standard 2024-08-20 ValidFAA registration status code V: Valid registration. All codes
N3763S Cessna
172E
Fixed-wing, single engine Individual owner
Arkansas
Standard 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N62WP Cessna
172C
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2024-08-19 ValidFAA registration status code V: Valid registration. All codes
N6823A Cessna
172
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-08-18 ValidFAA registration status code V: Valid registration. All codes
N6917X Cessna
172B
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-08-18 ValidFAA registration status code V: Valid registration. All codes
N7717T Cessna
172A
Fixed-wing, single engine Individual owner
Mississippi
Standard 2024-08-18 ValidFAA registration status code V: Valid registration. All codes
N6127E Cessna
172
Fixed-wing, single engine Cardan Aircraft Services INC
Redding, California
Standard 2024-08-17 ValidFAA registration status code V: Valid registration. All codes
N8220B Cessna
172
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-08-16 ValidFAA registration status code V: Valid registration. All codes
N7774A Cessna
172F
Fixed-wing, single engine Saydun LLC
Richardson, Texas
Standard 2024-08-15 ValidFAA registration status code V: Valid registration. All codes
N9837T Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2024-08-15 ValidFAA registration status code V: Valid registration. All codes
N1734F Cessna
172H
Fixed-wing, single engine Wlb Farms LLC
Iota, Louisiana
Standard 2024-08-13 ValidFAA registration status code V: Valid registration. All codes
N3779S Cessna
172E
Fixed-wing, single engine Shawver Aviation LLC
Knoxville, Iowa
Standard 2024-08-13 ValidFAA registration status code V: Valid registration. All codes
N6014R Cessna
172G
Fixed-wing, single engine Inspire Wing LLC
Middletown, Maryland
Standard 2024-08-13 ValidFAA registration status code V: Valid registration. All codes
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Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.