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
N5191A Cessna
172
Fixed-wing, single engine Burdeaux Barry S
Orting, Washington
Standard 2023-07-03 ValidFAA registration status code V: Valid registration. All codes
N6988X Cessna
172B
Fixed-wing, single engine Paul Aviation LLC
Wasco, California
Standard 2023-07-03 ValidFAA registration status code V: Valid registration. All codes
N3740F Cessna
172H
Fixed-wing, single engine Lavalley Asset Management
Potsdam, New York
Standard 2023-07-01 ValidFAA registration status code V: Valid registration. All codes
N7511T Cessna
172A
Fixed-wing, single engine Individual owner
California
Standard 2023-07-01 ValidFAA registration status code V: Valid registration. All codes
N3819L Cessna
172G
Fixed-wing, single engine Ray Aviation LLC
Burkett, Texas
Standard 2023-06-30 ValidFAA registration status code V: Valid registration. All codes
N5444R Cessna
172F
Fixed-wing, single engine Alpha Romeo Aviation LLC
Phoenix, Arizona
Standard 2023-06-30 ValidFAA registration status code V: Valid registration. All codes
N7028A Cessna
172
Fixed-wing, single engine Individual owner
Utah
Standard 2023-06-30 ValidFAA registration status code V: Valid registration. All codes
N3PV Cessna
172E
Fixed-wing, single engine Individual owner
California
Standard 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N2501V Cessna
170
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N4333L Cessna
172G
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N4347L Cessna
172G
Fixed-wing, single engine Co-owned owner
Washington
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N7640X Cessna
172B
Fixed-wing, single engine Notre Amour LLC
Cypress, Texas
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N8338B Cessna
172
Fixed-wing, single engine Smitty172 LLC
Rockford, Michigan
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N2561U Cessna
172D
Fixed-wing, single engine Individual owner
Texas
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N3246L Cessna
172H
Fixed-wing, single engine Individual owner
New York
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N3778R Cessna
172H
Fixed-wing, single engine Swede Aviation LLC
Tucson, Arizona
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N5996A Cessna
172
Fixed-wing, single engine Cascade Mountain Vacation Rentals LLC
Cle Elum, Washington
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N8124B Cessna
172
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N2111Y Cessna
172D
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N2334U Cessna
172D
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N3682L Cessna
172G
Fixed-wing, single engine Riseaero LLC
Florence, South Carolina
Standard 2023-06-24 ValidFAA registration status code V: Valid registration. All codes
N8077L Cessna
172H
Fixed-wing, single engine Individual owner
South Carolina
Standard 2023-06-24 ValidFAA registration status code V: Valid registration. All codes
N5427T Cessna
172E
Fixed-wing, single engine NW Aircraft Sales & Leasing LLC
Scappoose, Oregon
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N30MU Cessna
172G
Fixed-wing, single engine Oracle Aviation LLC
Omaha, Nebraska
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N3788F Cessna
172H
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N4700T Maule
M-4
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N172NX Cessna
172B
Fixed-wing, single engine Individual owner
Texas
Standard 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N4477B Cessna
170
Fixed-wing, single engine Spar Enterprises LLC
Warrensburg, Missouri
Standard 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N2542U Cessna
172D
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2023-06-18 ValidFAA registration status code V: Valid registration. All codes
N3231L Cessna
172H
Fixed-wing, single engine Columbia Asset Trust CORP Trustee
Wichita, Kansas
Standard 2023-06-18 ValidFAA registration status code V: Valid registration. All codes
N2739U Cessna
172D
Fixed-wing, single engine N2739U Holding LLC
New Orleans, Louisiana
Standard 2023-06-16 ValidFAA registration status code V: Valid registration. All codes
N5421R Cessna
172F
Fixed-wing, single engine Aviation Design LLC
Kalamazoo, Michigan
Standard 2023-06-15 ValidFAA registration status code V: Valid registration. All codes
N5902A Cessna
172
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-06-15 ValidFAA registration status code V: Valid registration. All codes
N707JY Cessna
172G
Fixed-wing, single engine Best Glide LLC
Davie, Florida
Standard 2023-06-15 ValidFAA registration status code V: Valid registration. All codes
N8067X Cessna
172B
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-06-15 ValidFAA registration status code V: Valid registration. All codes
N333RX Cessna
172G
Fixed-wing, single engine Journeys Aviation INC
Boulder, Colorado
Standard 2023-06-14 ValidFAA registration status code V: Valid registration. All codes
N4118F Cessna
172
Fixed-wing, single engine Mountain Air Spray CO INC
Craig, Colorado
Standard 2023-06-14 ValidFAA registration status code V: Valid registration. All codes
N4275F Cessna
172
Fixed-wing, single engine G & M Associates LLC
Quitman, Georgia
Standard 2023-06-14 ValidFAA registration status code V: Valid registration. All codes
N1328F Cessna
172G
Fixed-wing, single engine Individual owner
Florida
Standard 2023-06-13 ValidFAA registration status code V: Valid registration. All codes
N3837L Cessna
172G
Fixed-wing, single engine Mountain Town Flying LLC
Hammondsport, New York
Standard 2023-06-13 ValidFAA registration status code V: Valid registration. All codes
N8373U Cessna
172F
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-06-13 ValidFAA registration status code V: Valid registration. All codes
N3904F Cessna
172
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-06-12 ValidFAA registration status code V: Valid registration. All codes
N6464B Cessna
172
Fixed-wing, single engine Resicum International LLC DBA
Gulf Shores, Alabama
Standard 2023-06-12 ValidFAA registration status code V: Valid registration. All codes
N8469X Cessna
172C
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-06-12 ValidFAA registration status code V: Valid registration. All codes
N7042A Cessna
172
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-06-11 ValidFAA registration status code V: Valid registration. All codes
N9112B Cessna
172
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-06-11 ValidFAA registration status code V: Valid registration. All codes
N2928U Cessna
172D
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-06-10 ValidFAA registration status code V: Valid registration. All codes
N8162B Cessna
172
Fixed-wing, single engine Mountain Air LLC
Carabaset Vly, Maine
Standard 2023-06-10 ValidFAA registration status code V: Valid registration. All codes
N6855A Cessna
172
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-06-09 ValidFAA registration status code V: Valid registration. All codes
N3549C Cessna
170B
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-06-08 ValidFAA registration status code V: Valid registration. All codes
N4301B Cessna
170B
Fixed-wing, single engine Cff LLC
Kalispell, Montana
Standard 2023-06-07 ValidFAA registration status code V: Valid registration. All codes
N4454B Cessna
170B
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-06-07 ValidFAA registration status code V: Valid registration. All codes
N1389F Cessna
172G
Fixed-wing, single engine Bedford Aero Club INC
Bedford, Indiana
Standard 2023-06-06 ValidFAA registration status code V: Valid registration. All codes
N5058A Cessna
172
Fixed-wing, single engine Individual owner
Washington
Standard 2023-06-06 ValidFAA registration status code V: Valid registration. All codes
N8097X Cessna
172B
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-06-06 ValidFAA registration status code V: Valid registration. All codes
N8225L Cessna
172H
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-06-05 ValidFAA registration status code V: Valid registration. All codes
N5648A Cessna
172
Fixed-wing, single engine Co-owned owner
Washington
Standard 2023-06-03 ValidFAA registration status code V: Valid registration. All codes
N3281L Cessna
172H
Fixed-wing, single engine Wizna LLC
Boca Raton, Florida
Standard 2023-06-01 ValidFAA registration status code V: Valid registration. All codes
N2833L Cessna
172H
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-05-31 ValidFAA registration status code V: Valid registration. All codes
N3052U Cessna
172E
Fixed-wing, single engine 6M Aviation LLC
Pleasant Hill, Missouri
Standard 2023-05-31 ValidFAA registration status code V: Valid registration. All codes
N5977R Cessna
172G
Fixed-wing, single engine Individual owner
Alabama
Standard 2023-05-31 ValidFAA registration status code V: Valid registration. All codes
N6702A Cessna
172
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-05-31 ValidFAA registration status code V: Valid registration. All codes
N8499X Cessna
172C
Fixed-wing, single engine Skaggs Nathan H
Peebles, Ohio
Standard 2023-05-31 ValidFAA registration status code V: Valid registration. All codes
N4630L Cessna
172G
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-05-30 ValidFAA registration status code V: Valid registration. All codes
N236DA Cessna
172G
Fixed-wing, single engine Individual owner
Florida
Standard 2023-05-29 ValidFAA registration status code V: Valid registration. All codes
N9545A Cessna
170A
Fixed-wing, single engine Jetl Aviation LLC
Southern Pines, North Carolina
Standard 2023-05-29 ValidFAA registration status code V: Valid registration. All codes
N7217A Cessna
172
Fixed-wing, single engine Mcguires Flying Service LLC
Obion, Tennessee
Standard 2023-05-28 ValidFAA registration status code V: Valid registration. All codes
N5474R Cessna
172F
Fixed-wing, single engine Leone Thomas A
Winchester, Virginia
Standard 2023-05-27 ValidFAA registration status code V: Valid registration. All codes
N5768A Cessna
172
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-05-27 ValidFAA registration status code V: Valid registration. All codes
N6499E Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2023-05-26 ValidFAA registration status code V: Valid registration. All codes
N7424X Cessna
172B
Fixed-wing, single engine High Glide LLC
Tucson, Arizona
Standard 2023-05-26 ValidFAA registration status code V: Valid registration. All codes
N172DF Cessna
172E
Fixed-wing, single engine Border Air LTD
Swanton, Vermont
Standard 2023-05-24 ValidFAA registration status code V: Valid registration. All codes
N24SG Cessna
172
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-05-24 ValidFAA registration status code V: Valid registration. All codes
N2671U Cessna
172D
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-05-24 ValidFAA registration status code V: Valid registration. All codes
N5786A Cessna
172
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-05-24 ValidFAA registration status code V: Valid registration. All codes
N5818R Cessna
172G
Fixed-wing, single engine Individual owner
South Dakota
Standard 2023-05-24 ValidFAA registration status code V: Valid registration. All codes
N7149A Cessna
172
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-05-24 ValidFAA registration status code V: Valid registration. All codes
N7934X Cessna
172B
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-05-24 ValidFAA registration status code V: Valid registration. All codes
N3434D Cessna
170B
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2023-05-23 ValidFAA registration status code V: Valid registration. All codes
N5024A Cessna
172
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-05-23 ValidFAA registration status code V: Valid registration. All codes
N8495X Cessna
172C
Fixed-wing, single engine Romeoromeo Alpha LLC
Greensburg, Indiana
Standard 2023-05-23 ValidFAA registration status code V: Valid registration. All codes
N3794F Cessna
172H
Fixed-wing, single engine N3794F LLC
Key West, Florida
Standard 2023-05-22 ValidFAA registration status code V: Valid registration. All codes
N5966A Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2023-05-22 ValidFAA registration status code V: Valid registration. All codes
N7166T Cessna
172A
Fixed-wing, single engine Central Aviation LLC
White City, Oregon
Standard 2023-05-22 ValidFAA registration status code V: Valid registration. All codes
N1350F Cessna
172G
Fixed-wing, single engine Individual owner
Texas
Standard 2023-05-21 ValidFAA registration status code V: Valid registration. All codes
N7305A Cessna
172
Fixed-wing, single engine K&M Aviation LLC
West Liberty, Kentucky
Standard 2023-05-21 ValidFAA registration status code V: Valid registration. All codes
N7792T Cessna
172A
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2023-05-21 ValidFAA registration status code V: Valid registration. All codes
N8250X Cessna
172C
Fixed-wing, single engine Individual owner
Texas
Standard 2023-05-20 ValidFAA registration status code V: Valid registration. All codes
N3254L Cessna
172H
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-05-19 ValidFAA registration status code V: Valid registration. All codes
N3279L Cessna
172H
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2023-05-19 ValidFAA registration status code V: Valid registration. All codes
N1300T Cessna
172G
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-05-18 ValidFAA registration status code V: Valid registration. All codes
N8398X Cessna
172C
Fixed-wing, single engine Individual owner
Montana
Standard 2023-05-17 ValidFAA registration status code V: Valid registration. All codes
N8707B Cessna
172
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-05-17 ValidFAA registration status code V: Valid registration. All codes
N9838M Maule
M-4C
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-05-17 ValidFAA registration status code V: Valid registration. All codes
N5793T Cessna
172E
Fixed-wing, single engine Jefferson County Public Schools
Louisville, Kentucky
Standard 2023-05-16 ValidFAA registration status code V: Valid registration. All codes
N172MB Cessna
172
Fixed-wing, single engine Stone Wall Acres
Antigo, Wisconsin
Standard 2023-05-15 ValidFAA registration status code V: Valid registration. All codes
N6835A Cessna
172
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-05-15 ValidFAA registration status code V: Valid registration. All codes
N6983X Cessna
172B
Fixed-wing, single engine Optivol CORP
Miami, Florida
Standard 2023-05-15 ValidFAA registration status code V: Valid registration. All codes
N8736B Cessna
172
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-05-15 ValidFAA registration status code V: Valid registration. All codes
N4RL Latham
PIEL DIAMANT CP-604
Fixed-wing, single engine Individual owner
Massachusetts
Experimental 2023-05-14 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.