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
N9140B Cessna
172
Fixed-wing, single engine Individual owner
Washington
Standard 2023-09-06 ValidFAA registration status code V: Valid registration. All codes
N8019X Cessna
172B
Fixed-wing, single engine Individual owner
Vermont
Standard 2023-09-05 ValidFAA registration status code V: Valid registration. All codes
N8999B Cessna
172
Fixed-wing, single engine Racoon Aviation LLC
San Antonio, Texas
Standard 2023-09-05 ValidFAA registration status code V: Valid registration. All codes
N5263Q Cessna
172F
Fixed-wing, single engine Individual owner
North Dakota
Standard 2023-09-04 ValidFAA registration status code V: Valid registration. All codes
N7131A Cessna
172
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-09-04 ValidFAA registration status code V: Valid registration. All codes
N7166A Cessna
172
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-09-02 ValidFAA registration status code V: Valid registration. All codes
N1385F Cessna
172G
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2023-09-01 ValidFAA registration status code V: Valid registration. All codes
N3971L Cessna
172G
Fixed-wing, single engine Individual owner
Montana
Standard 2023-09-01 ValidFAA registration status code V: Valid registration. All codes
N2482L Cessna
172H
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-08-30 ValidFAA registration status code V: Valid registration. All codes
N5182F Cessna
172F
Fixed-wing, single engine American Flight Museum INC
Topeka, Kansas
Standard 2023-08-29 ValidFAA registration status code V: Valid registration. All codes
N5751R Cessna
172G
Fixed-wing, single engine Individual owner
Florida
Standard 2023-08-29 ValidFAA registration status code V: Valid registration. All codes
N3746R Cessna
172H
Fixed-wing, single engine Individual owner
Texas
Standard 2023-08-28 ValidFAA registration status code V: Valid registration. All codes
N6954X Cessna
172B
Fixed-wing, single engine Sebestik William C
Walker, Minnesota
Standard 2023-08-28 ValidFAA registration status code V: Valid registration. All codes
N8065X Cessna
172B
Fixed-wing, single engine College of Missionary Aviation INC
Keystone Heights, Florida
Standard 2023-08-28 ValidFAA registration status code V: Valid registration. All codes
N8675B Cessna
172
Fixed-wing, single engine Mountain Express LLC
Haines City, Florida
Standard 2023-08-28 ValidFAA registration status code V: Valid registration. All codes
N3974L Cessna
172G
Fixed-wing, single engine Lake Area Technical College
Watertown, South Dakota
Standard 2023-08-26 ValidFAA registration status code V: Valid registration. All codes
N3572C Cessna
170B
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N3621S Cessna
172E
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N5665R Cessna
172F
Fixed-wing, single engine Individual owner
California
Standard 2023-08-24 ValidFAA registration status code V: Valid registration. All codes
N1748F Cessna
172H
Fixed-wing, single engine Individual owner
Mississippi
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N3931F Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N3934F Cessna
172
Fixed-wing, single engine Great Wave Aviation LLC
Hood River, Oregon
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N6288E Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N7427A Cessna
172
Fixed-wing, single engine Flaps Forty LLC
East Wenatchee, Washington
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N7993U Cessna
172F
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N8367X Cessna
172C
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N8683U Cessna
172F
Fixed-wing, single engine Co-owned owner
Montana
Standard 2023-08-22 ValidFAA registration status code V: Valid registration. All codes
N6866A Cessna
172
Fixed-wing, single engine Jlk INC
Malvern, Arkansas
Standard 2023-08-21 ValidFAA registration status code V: Valid registration. All codes
N1361Y Cessna
172C
Fixed-wing, single engine Feathered Flyers LLC
Louisville, Kentucky
Standard 2023-08-19 ValidFAA registration status code V: Valid registration. All codes
N172BN Cessna
172G
Fixed-wing, single engine Redtail Aviation LLC
Rexburg, Idaho
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N2442L Cessna
172H
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N1570Y Cessna
172C
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-08-17 ValidFAA registration status code V: Valid registration. All codes
N111MF Cessna
172D
Fixed-wing, single engine Individual owner
California
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N3761S Cessna
172E
Fixed-wing, single engine Bucks Flight Academy LLC
Cashion, Oklahoma
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N4303B Cessna
170B
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N6812A Cessna
172
Fixed-wing, single engine Moores Aerospace Solutions LLC
Statesboro, Georgia
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N4170C Maule
BEE DEE M-4
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-08-15 ValidFAA registration status code V: Valid registration. All codes
N4216L Cessna
172G
Fixed-wing, single engine N4216L LLC
Kapolei, Hawaii
Standard 2023-08-15 ValidFAA registration status code V: Valid registration. All codes
N6750A Cessna
172
Fixed-wing, single engine C & B Aerial Transport INC
Wilmington, Delaware
Standard 2023-08-14 ValidFAA registration status code V: Valid registration. All codes
N3511S Cessna
172E
Fixed-wing, single engine Individual owner
Maine
Standard 2023-08-13 ValidFAA registration status code V: Valid registration. All codes
N2937U Cessna
172D
Fixed-wing, single engine Hangar 47 Aviation LLC
Midvale, Utah
Standard 2023-08-12 ValidFAA registration status code V: Valid registration. All codes
N1643Y Cessna
172C
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-08-10 ValidFAA registration status code V: Valid registration. All codes
N5687T Cessna
172E
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-08-10 ValidFAA registration status code V: Valid registration. All codes
N6786A Cessna
172
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2023-08-10 ValidFAA registration status code V: Valid registration. All codes
N5135Q Cessna
172F
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-08-09 ValidFAA registration status code V: Valid registration. All codes
N7174T Cessna
172A
Fixed-wing, single engine Individual owner
Alaska
Restricted 2023-08-09 ValidFAA registration status code V: Valid registration. All codes
N7655T Cessna
172A
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-08-09 ValidFAA registration status code V: Valid registration. All codes
N8228 Cessna
172F
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-08-09 ValidFAA registration status code V: Valid registration. All codes
N3914S Cessna
172E
Fixed-wing, single engine Mdz Aviation LLC
Orlando, Florida
Standard 2023-08-08 ValidFAA registration status code V: Valid registration. All codes
N7590T Cessna
172
Fixed-wing, single engine Co-owned owner
New Hampshire
Standard 2023-08-07 ValidFAA registration status code V: Valid registration. All codes
N3950S Cessna
172E
Fixed-wing, single engine Blue Sky Aviation Adventures LLC
St George, Utah
Standard 2023-08-05 ValidFAA registration status code V: Valid registration. All codes
N7715U Cessna
172E
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2023-08-05 ValidFAA registration status code V: Valid registration. All codes
N1483V Cessna
172D
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2023-08-04 ValidFAA registration status code V: Valid registration. All codes
N6330E Cessna
172
Fixed-wing, single engine Individual owner
Maine
Standard 2023-08-04 ValidFAA registration status code V: Valid registration. All codes
N8363U Cessna
172F
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-08-03 ValidFAA registration status code V: Valid registration. All codes
N1392Y Cessna
172C
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-08-02 ValidFAA registration status code V: Valid registration. All codes
N1684Y Cessna
172C
Fixed-wing, single engine Individual owner
Maryland
Standard 2023-08-02 ValidFAA registration status code V: Valid registration. All codes
N6738E Cessna
175
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-08-02 ValidFAA registration status code V: Valid registration. All codes
N7519T Cessna
172A
Fixed-wing, single engine Scud Air 19T LLC
Morgan, Utah
Standard 2023-07-31 ValidFAA registration status code V: Valid registration. All codes
N7811X Cessna
172B
Fixed-wing, single engine Mach 3 LLC
Enid, Oklahoma
Standard 2023-07-31 ValidFAA registration status code V: Valid registration. All codes
N5690T Cessna
172E
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-07-30 ValidFAA registration status code V: Valid registration. All codes
N8434U Cessna
172F
Fixed-wing, single engine Jwa Flight School LLC
Bolingbrook, Illinois
Standard 2023-07-29 ValidFAA registration status code V: Valid registration. All codes
N8724B Cessna
172
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-07-28 ValidFAA registration status code V: Valid registration. All codes
N702VP Cessna
172E
Fixed-wing, single engine Caribbean Air Partners LLC
Winter Garden, Florida
None on file 2023-07-27 ValidFAA registration status code V: Valid registration. All codes
N7662T Cessna
172A
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2023-07-27 ValidFAA registration status code V: Valid registration. All codes
N7240A Cessna
172
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-07-26 ValidFAA registration status code V: Valid registration. All codes
N7477X Cessna
172B
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-07-26 ValidFAA registration status code V: Valid registration. All codes
N8410X Cessna
172C
Fixed-wing, single engine Fondy Investments LLC
Anchorage, Alaska
Standard 2023-07-26 ValidFAA registration status code V: Valid registration. All codes
N2083Y Cessna
172D
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-07-25 ValidFAA registration status code V: Valid registration. All codes
N2887L Cessna
172H
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2023-07-24 ValidFAA registration status code V: Valid registration. All codes
N3271L Cessna
172H
Fixed-wing, single engine Co-owned owner
Washington
Standard 2023-07-24 ValidFAA registration status code V: Valid registration. All codes
N3998L Cessna
172G
Fixed-wing, single engine Kansas Copters & Wings INC
Augusta, Kansas
Standard 2023-07-24 ValidFAA registration status code V: Valid registration. All codes
N4144F Cessna
172
Fixed-wing, single engine Individual owner
South Dakota
Standard 2023-07-24 ValidFAA registration status code V: Valid registration. All codes
N7636T Cessna
172A
Fixed-wing, single engine N7636T LLC
Farmdale, Ohio
Standard 2023-07-22 ValidFAA registration status code V: Valid registration. All codes
N3773R Cessna
172H
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-07-21 ValidFAA registration status code V: Valid registration. All codes
N5815R Cessna
172G
Fixed-wing, single engine Individual owner
Montana
Standard 2023-07-21 ValidFAA registration status code V: Valid registration. All codes
N3551S Cessna
172E
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2023-07-20 ValidFAA registration status code V: Valid registration. All codes
N8715B Cessna
172
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-07-20 ValidFAA registration status code V: Valid registration. All codes
N2787U Cessna
172D
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-07-19 ValidFAA registration status code V: Valid registration. All codes
N6429B Cessna
172
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-07-19 ValidFAA registration status code V: Valid registration. All codes
N3890R Cessna
172H
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-07-18 ValidFAA registration status code V: Valid registration. All codes
N7047T Cessna
172
Fixed-wing, single engine Petersen Derrick D
Sibley, Iowa
Standard 2023-07-17 ValidFAA registration status code V: Valid registration. All codes
N2531L Cessna
172H
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-07-14 ValidFAA registration status code V: Valid registration. All codes
N8411U Cessna
172F
Fixed-wing, single engine Neu Aviation LLC
Benton, Louisiana
Standard 2023-07-14 ValidFAA registration status code V: Valid registration. All codes
N7926B Cessna
172
Fixed-wing, single engine Russellaire LLC
Holt, Florida
Standard 2023-07-13 ValidFAA registration status code V: Valid registration. All codes
N100KH Cessna
172
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N1659Y Cessna
172C
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N5636A Cessna
172
Fixed-wing, single engine Fine Aviation LLC
Jefferson, Oregon
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N2975U Cessna
172G
Fixed-wing, single engine Individual owner
Texas
Standard 2023-07-11 ValidFAA registration status code V: Valid registration. All codes
N1234S Cessna
172G
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N5196A Cessna
172
Fixed-wing, single engine Co-owned owner
Utah
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N3772R Cessna
172H
Fixed-wing, single engine River Town Aviation LLC
Williamstown, West Virginia
Standard 2023-07-08 ValidFAA registration status code V: Valid registration. All codes
N8152L Cessna
172H
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2023-07-07 ValidFAA registration status code V: Valid registration. All codes
N2431D Cessna
170B
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N2552L Cessna
172H
Fixed-wing, single engine First Flight CORP
San Diego, California
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N7121A Cessna
172
Fixed-wing, single engine Individual owner
Utah
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N5750R Cessna
172G
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N6697A Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N7884D Piper
PA-18S-150
Fixed-wing, single engine Individual owner
Montana
Standard 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N3578S Cessna
172E
Fixed-wing, single engine Individual owner
Idaho
Standard 2023-07-03 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.