The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 9, 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
N4250L Cessna
172G
Fixed-wing, single engine Knight Aire LLC
Simpsonville, South Carolina
Standard 2009-09-02 ValidFAA registration status code V: Valid registration. All codes
N5748T Cessna
172E
Fixed-wing, single engine Individual owner
Minnesota
Standard 2009-08-27 ValidFAA registration status code V: Valid registration. All codes
N4971R Cessna
172H
Fixed-wing, single engine Individual owner
California
Standard 2009-08-26 ValidFAA registration status code V: Valid registration. All codes
N6012A Cessna
172
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2009-08-25 ValidFAA registration status code V: Valid registration. All codes
N2974D Cessna
170B
Fixed-wing, single engine Individual owner
California
Standard 2009-08-11 ValidFAA registration status code V: Valid registration. All codes
N1169F Cessna
172G
Fixed-wing, single engine Co-owned owner
California
Standard 2009-08-06 ValidFAA registration status code V: Valid registration. All codes
N6217E Cessna
172
Fixed-wing, single engine Individual owner
New Jersey
Standard 2009-08-03 ValidFAA registration status code V: Valid registration. All codes
N2776U Cessna
172D
Fixed-wing, single engine Individual owner
Texas
Standard 2009-07-29 ValidFAA registration status code V: Valid registration. All codes
N3650L Cessna
172G
Fixed-wing, single engine Tom Wrolstad Aircraft LLC
Molalla, Oregon
Standard 2009-07-24 ValidFAA registration status code V: Valid registration. All codes
N6639A Cessna
172
Fixed-wing, single engine Individual owner
Minnesota
Standard 2009-07-21 ValidFAA registration status code V: Valid registration. All codes
N7266A Cessna
172
Fixed-wing, single engine Co-owned owner
Vermont
Standard 2009-07-17 ValidFAA registration status code V: Valid registration. All codes
N7413T Cessna
172A
Fixed-wing, single engine Individual owner
Ohio
Standard 2009-07-16 ValidFAA registration status code V: Valid registration. All codes
N6362E Cessna
172
Fixed-wing, single engine Individual owner
Washington
Standard 2009-07-13 ValidFAA registration status code V: Valid registration. All codes
N5962R Cessna
172G
Fixed-wing, single engine N5962R LLC
Auxvasse, Missouri
Standard 2009-07-09 ValidFAA registration status code V: Valid registration. All codes
N3836R Cessna
172H
Fixed-wing, single engine Individual owner
Washington
Standard 2009-07-07 ValidFAA registration status code V: Valid registration. All codes
N6284E Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2009-07-02 ValidFAA registration status code V: Valid registration. All codes
N7483X Cessna
172B
Fixed-wing, single engine Individual owner
Nebraska
Standard 2009-07-01 ValidFAA registration status code V: Valid registration. All codes
N6637A Cessna
172
Fixed-wing, single engine Individual owner
Arizona
Standard 2009-06-29 ValidFAA registration status code V: Valid registration. All codes
N7117T Cessna
172
Fixed-wing, single engine Co-owned owner
Florida
Special flight permit 2009-06-29 ValidFAA registration status code V: Valid registration. All codes
N1117T Cessna
172F
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2009-06-25 ValidFAA registration status code V: Valid registration. All codes
N2420U Cessna
172D
Fixed-wing, single engine Individual owner
Georgia
Standard 2009-06-23 ValidFAA registration status code V: Valid registration. All codes
N7426X Cessna
172B
Fixed-wing, single engine Traverse Air INC
Traverse City, Michigan
Standard 2009-06-22 ValidFAA registration status code V: Valid registration. All codes
N2529U Cessna
172D
Fixed-wing, single engine Individual owner
Alabama
Standard 2009-06-17 ValidFAA registration status code V: Valid registration. All codes
N8398U Cessna
172F
Fixed-wing, single engine Adrenaline Junkies LLC
Richfield, Utah
Standard 2009-06-17 ValidFAA registration status code V: Valid registration. All codes
N8571U Cessna
172F
Fixed-wing, single engine Individual owner
New York
Standard 2009-06-09 ValidFAA registration status code V: Valid registration. All codes
N2775U Cessna
172D
Fixed-wing, single engine Individual owner
Missouri
Standard 2009-05-21 ValidFAA registration status code V: Valid registration. All codes
N6499B Cessna
172
Fixed-wing, single engine Individual owner
Minnesota
Standard 2009-05-19 ValidFAA registration status code V: Valid registration. All codes
N8074B Cessna
172
Fixed-wing, single engine Individual owner
Arizona
Standard 2009-04-29 ValidFAA registration status code V: Valid registration. All codes
N7849T Cessna
172A
Fixed-wing, single engine Individual owner
Oregon
Standard 2009-04-23 ValidFAA registration status code V: Valid registration. All codes
N1357Y Cessna
172C
Fixed-wing, single engine Individual owner
Georgia
Standard 2009-04-21 ValidFAA registration status code V: Valid registration. All codes
N3497C Cessna
170B
Fixed-wing, single engine Individual owner
California
Standard 2009-04-15 ValidFAA registration status code V: Valid registration. All codes
N1403F Cessna
172H
Fixed-wing, single engine Individual owner
New York
Standard 2009-04-14 ValidFAA registration status code V: Valid registration. All codes
N5044A Cessna
172
Fixed-wing, single engine Individual owner
Florida
Standard 2009-04-14 ValidFAA registration status code V: Valid registration. All codes
N2532U Cessna
172D
Fixed-wing, single engine Individual owner
Michigan
Standard 2009-04-10 ValidFAA registration status code V: Valid registration. All codes
N7746T Cessna
172A
Fixed-wing, single engine Individual owner
North Carolina
Standard 2009-04-10 ValidFAA registration status code V: Valid registration. All codes
N8353B Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2009-04-08 ValidFAA registration status code V: Valid registration. All codes
N6448E Cessna
172
Fixed-wing, single engine Lincoln Land Community College
Springfield, Illinois
Standard 2009-04-02 ValidFAA registration status code V: Valid registration. All codes
N7985X Cessna
172B
Fixed-wing, single engine Individual owner
Louisiana
Standard 2009-03-09 ValidFAA registration status code V: Valid registration. All codes
N6094A Cessna
172
Fixed-wing, single engine Ktkv Flyers INC
Tomahawk, Wisconsin
Standard 2009-03-06 ValidFAA registration status code V: Valid registration. All codes
N6417E Cessna
172
Fixed-wing, single engine Individual owner
Indiana
Standard 2009-03-03 ValidFAA registration status code V: Valid registration. All codes
N1478F Cessna
172H
Fixed-wing, single engine Individual owner
Alabama
Standard 2009-02-24 ValidFAA registration status code V: Valid registration. All codes
N2487U Cessna
172D
Fixed-wing, single engine Individual owner
Indiana
Standard 2009-02-06 ValidFAA registration status code V: Valid registration. All codes
N7287A Cessna
172
Fixed-wing, single engine Individual owner
Georgia
Standard 2009-02-05 ValidFAA registration status code V: Valid registration. All codes
N6178E Cessna
172
Fixed-wing, single engine Individual owner
Nebraska
Standard 2009-01-06 ValidFAA registration status code V: Valid registration. All codes
N3970S Cessna
172E
Fixed-wing, single engine Individual owner
Missouri
Standard 2009-01-05 ValidFAA registration status code V: Valid registration. All codes
N8182U Cessna
172F
Fixed-wing, single engine Morristown Flying Service INC
Talbott, Tennessee
Standard 2009-01-05 ValidFAA registration status code V: Valid registration. All codes
N8140B Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2008-12-11 ValidFAA registration status code V: Valid registration. All codes
N8314U Cessna
172F
Fixed-wing, single engine Individual owner
Nebraska
Standard 2008-12-11 ValidFAA registration status code V: Valid registration. All codes
N8237T Cessna
175B
Fixed-wing, single engine Individual owner
California
Standard 2008-12-05 ValidFAA registration status code V: Valid registration. All codes
N3812L Cessna
172G
Fixed-wing, single engine Individual owner
Texas
Standard 2008-11-18 ValidFAA registration status code V: Valid registration. All codes
N4362B Cessna
170B
Fixed-wing, single engine Individual owner
Illinois
Standard 2008-11-07 ValidFAA registration status code V: Valid registration. All codes
N7549X Cessna
172B
Fixed-wing, single engine Individual owner
New Jersey
Standard 2008-11-07 ValidFAA registration status code V: Valid registration. All codes
N3510D Cessna
170B
Fixed-wing, single engine Skywagon Aero LLC
Wilmington, Delaware
Standard 2008-11-06 ValidFAA registration status code V: Valid registration. All codes
N5202F Cessna
172F
Fixed-wing, single engine United States Air Force (Owner)
Millington, Tennessee
Standard 2008-11-05 ValidFAA registration status code V: Valid registration. All codes
N3554S Cessna
172E
Fixed-wing, single engine Individual owner
Indiana
Standard 2008-10-29 ValidFAA registration status code V: Valid registration. All codes
N8305U Cessna
172F
Fixed-wing, single engine Skyhawk Leasing LLC
Port Huron, Michigan
Standard 2008-10-24 ValidFAA registration status code V: Valid registration. All codes
N5792T Cessna
172E
Fixed-wing, single engine Co-owned owner
Maryland
Standard 2008-10-21 ValidFAA registration status code V: Valid registration. All codes
N4483L Cessna
172G
Fixed-wing, single engine Individual owner
Kansas
Standard 2008-10-20 ValidFAA registration status code V: Valid registration. All codes
N1367F Cessna
172G
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2008-10-17 ValidFAA registration status code V: Valid registration. All codes
N5456T Cessna
172E
Fixed-wing, single engine Individual owner
Texas
Standard 2008-10-17 ValidFAA registration status code V: Valid registration. All codes
N1444Y Cessna
172C
Fixed-wing, single engine Co-owned owner
Missouri
Multiple 2008-10-14 ValidFAA registration status code V: Valid registration. All codes
N5636R Cessna
172F
Fixed-wing, single engine Skyhawk Aviation LLC
Ogden, Utah
Standard 2008-10-09 ValidFAA registration status code V: Valid registration. All codes
N8561U Cessna
172F
Fixed-wing, single engine Individual owner
Florida
Standard 2008-10-03 ValidFAA registration status code V: Valid registration. All codes
N7713U Cessna
172E
Fixed-wing, single engine Co-owned owner
Florida
Standard 2008-10-01 ValidFAA registration status code V: Valid registration. All codes
N7415X Cessna
172B
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2008-09-29 ValidFAA registration status code V: Valid registration. All codes
N5120F Cessna
172F
Fixed-wing, single engine United States Air Force
Jacksonville, Florida
Standard 2008-09-16 ValidFAA registration status code V: Valid registration. All codes
N7600X Cessna
172B
Fixed-wing, single engine Individual owner
Florida
Standard 2008-09-16 ValidFAA registration status code V: Valid registration. All codes
N2702C Cessna
170B
Fixed-wing, single engine Individual owner
Tennessee
Standard 2008-09-03 ValidFAA registration status code V: Valid registration. All codes
N2622U Cessna
172D
Fixed-wing, single engine Individual owner
Florida
Standard 2008-08-26 ValidFAA registration status code V: Valid registration. All codes
N2955D Cessna
170B
Fixed-wing, single engine Individual owner
Nebraska
Standard 2008-08-22 ValidFAA registration status code V: Valid registration. All codes
N6914X Cessna
172B
Fixed-wing, single engine Individual owner
Missouri
Standard 2008-08-21 ValidFAA registration status code V: Valid registration. All codes
N5442E Cessna
172
Fixed-wing, single engine Individual owner
Nebraska
Standard 2008-08-19 ValidFAA registration status code V: Valid registration. All codes
N5630R Cessna
172F
Fixed-wing, single engine Lanas Flying Machine LLC
Hollywood, Florida
Standard 2008-08-18 ValidFAA registration status code V: Valid registration. All codes
N7717U Cessna
172E
Fixed-wing, single engine Green Castle Aero Club LTD
Oxford, Iowa
Standard 2008-08-15 ValidFAA registration status code V: Valid registration. All codes
N7115T Cessna
172
Fixed-wing, single engine 172 Club LLC
Olalla, Washington
Standard 2008-08-14 ValidFAA registration status code V: Valid registration. All codes
N9465B Cessna
175
Fixed-wing, single engine Individual owner
Texas
Standard 2008-08-07 ValidFAA registration status code V: Valid registration. All codes
N3803L Cessna
172G
Fixed-wing, single engine Individual owner
Florida
Standard 2008-07-29 ValidFAA registration status code V: Valid registration. All codes
N7004A Cessna
172
Fixed-wing, single engine Individual owner
New York
Standard 2008-07-28 ValidFAA registration status code V: Valid registration. All codes
N1725F Cessna
172H
Fixed-wing, single engine Individual owner
Texas
Standard 2008-07-18 ValidFAA registration status code V: Valid registration. All codes
N2743U Cessna
172D
Fixed-wing, single engine Individual owner
New Mexico
Standard 2008-07-10 ValidFAA registration status code V: Valid registration. All codes
N5554R Cessna
172F
Fixed-wing, single engine Individual owner
Texas
Standard 2008-07-08 ValidFAA registration status code V: Valid registration. All codes
N6832X Cessna
172A
Fixed-wing, single engine Owens Philip A
Maryville, Tennessee
Standard 2008-07-01 ValidFAA registration status code V: Valid registration. All codes
N3520S Cessna
172E
Fixed-wing, single engine Brosnan James M
Staten Island, New York
Standard 2008-06-30 ValidFAA registration status code V: Valid registration. All codes
N6871A Cessna
172
Fixed-wing, single engine Co-owned owner
West Virginia
Standard 2008-06-30 ValidFAA registration status code V: Valid registration. All codes
N8136B Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2008-06-26 ValidFAA registration status code V: Valid registration. All codes
N3793S Cessna
172E
Fixed-wing, single engine Co-owned owner
New York
Standard 2008-06-25 ValidFAA registration status code V: Valid registration. All codes
N7209T Cessna
172A
Fixed-wing, single engine Individual owner
California
Standard 2008-06-24 ValidFAA registration status code V: Valid registration. All codes
N3926S Cessna
172E
Fixed-wing, single engine Individual owner
California
Standard 2008-06-18 ValidFAA registration status code V: Valid registration. All codes
N8762U Cessna
172F
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2008-06-11 ValidFAA registration status code V: Valid registration. All codes
N378AA Cessna
172E
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2008-06-06 ValidFAA registration status code V: Valid registration. All codes
N5516T Cessna
172E
Fixed-wing, single engine Individual owner
Virginia
Standard 2008-06-05 ValidFAA registration status code V: Valid registration. All codes
N7548T Cessna
172A
Fixed-wing, single engine Individual owner
California
Standard 2008-06-05 ValidFAA registration status code V: Valid registration. All codes
N8852B Cessna
172
Fixed-wing, single engine Individual owner
West Virginia
Standard 2008-05-22 ValidFAA registration status code V: Valid registration. All codes
N4032F Cessna
172
Fixed-wing, single engine Dmnm LLC
Albuquerque, New Mexico
Standard 2008-05-20 ValidFAA registration status code V: Valid registration. All codes
N5923A Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2008-05-14 ValidFAA registration status code V: Valid registration. All codes
N1324Y Cessna
172C
Fixed-wing, single engine Individual owner
Kansas
Standard 2008-05-09 ValidFAA registration status code V: Valid registration. All codes
N5623A Cessna
172
Fixed-wing, single engine Individual owner
Minnesota
Standard 2008-05-07 ValidFAA registration status code V: Valid registration. All codes
N4265F Cessna
172
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2008-04-28 ValidFAA registration status code V: Valid registration. All codes
N9141B Cessna
172
Fixed-wing, single engine Individual owner
Utah
Standard 2008-04-23 ValidFAA registration status code V: Valid registration. All codes
N7385A Cessna
172
Fixed-wing, single engine Individual owner
Florida
Standard 2008-04-14 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 9, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.