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
N5002A Cessna
172
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2021-06-03 ValidFAA registration status code V: Valid registration. All codes
N1146F Cessna
172G
Fixed-wing, single engine Individual owner
Minnesota
Standard 2021-06-02 ValidFAA registration status code V: Valid registration. All codes
N3041U Cessna
172E
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2021-06-02 ValidFAA registration status code V: Valid registration. All codes
N2713L Cessna
172H
Fixed-wing, single engine Individual owner
Montana
Standard 2021-06-01 ValidFAA registration status code V: Valid registration. All codes
N7574X Cessna
172B
Fixed-wing, single engine Parker Air LLC
Corinth, Mississippi
Standard 2021-06-01 ValidFAA registration status code V: Valid registration. All codes
N5798A Cessna
172
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N5906A Cessna
172
Fixed-wing, single engine Gnb Aviation LLC
Lake City, Tennessee
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N5583T Cessna
172E
Fixed-wing, single engine Individual owner
New Mexico
Standard 2021-05-26 ValidFAA registration status code V: Valid registration. All codes
N7675T Cessna
172A
Fixed-wing, single engine Individual owner
Idaho
Standard 2021-05-26 ValidFAA registration status code V: Valid registration. All codes
N5471T Cessna
172E
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-25 ValidFAA registration status code V: Valid registration. All codes
N7178T Cessna
172A
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-25 ValidFAA registration status code V: Valid registration. All codes
N7201T Cessna
172A
Fixed-wing, single engine Individual owner
Georgia
Standard 2021-05-24 ValidFAA registration status code V: Valid registration. All codes
N8075B Cessna
172
Fixed-wing, single engine Individual owner
Louisiana
Standard 2021-05-24 ValidFAA registration status code V: Valid registration. All codes
N1624Y Cessna
172C
Fixed-wing, single engine Fallbrook Fly Girl LLC
Lakeside, Oregon
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N19WS Cessna
172
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N7422A Cessna
172
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N6021R Cessna
172G
Fixed-wing, single engine Individual owner
Virginia
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N9845T Cessna
172A
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N4308L Cessna
172G
Fixed-wing, single engine Individual owner
Illinois
Standard 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N7529X Cessna
172B
Fixed-wing, single engine Individual owner
Kentucky
Standard 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N8514U Cessna
172F
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N9728T Cessna
172A
Fixed-wing, single engine Individual owner
Georgia
Standard 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N9813T Cessna
172A
Fixed-wing, single engine Henley Enterprises INC
Mangonia Park, Florida
Standard 2021-05-15 ValidFAA registration status code V: Valid registration. All codes
N3972L Cessna
172G
Fixed-wing, single engine Individual owner
Virginia
Standard 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N711SN Cessna
172G
Fixed-wing, single engine Skywatch Aviation LLC
French Village, Missouri
Standard 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N3959S Cessna
172E
Fixed-wing, single engine Individual owner
Oregon
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N977DW Cessna
172
Fixed-wing, single engine Co-owned owner
Washington
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N5712T Cessna
172E
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N6733A Cessna
172
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N6735A Cessna
172
Fixed-wing, single engine Individual owner
Idaho
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N7534T Cessna
172A
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N3017U Cessna
172E
Fixed-wing, single engine Co-owned owner
Texas
Standard 2021-05-08 ValidFAA registration status code V: Valid registration. All codes
N8506B Cessna
172
Fixed-wing, single engine Individual owner
New York
Standard 2021-05-08 ValidFAA registration status code V: Valid registration. All codes
N688DD Cessna
172E
Fixed-wing, single engine Propit INC
Wilmington, Delaware
Standard 2021-05-07 ValidFAA registration status code V: Valid registration. All codes
N7969X Cessna
172B
Fixed-wing, single engine Burnham Bros
Winner, South Dakota
Standard 2021-05-07 ValidFAA registration status code V: Valid registration. All codes
N6497B Cessna
172
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N7996U Cessna
172F
Fixed-wing, single engine Volare of Sc LLC
Myrtle Beach, South Carolina
Standard 2021-05-05 ValidFAA registration status code V: Valid registration. All codes
N7362T Cessna
172A
Fixed-wing, single engine Individual owner
Minnesota
Standard 2021-05-04 ValidFAA registration status code V: Valid registration. All codes
N7757U Cessna
172E
Fixed-wing, single engine Truitt Seth L
Cynthiana, Kentucky
Standard 2021-04-27 ValidFAA registration status code V: Valid registration. All codes
N7066A Cessna
172
Fixed-wing, single engine Newton Consulting & Engineering INC
Tucson, Arizona
Standard 2021-04-26 ValidFAA registration status code V: Valid registration. All codes
N3577S Cessna
172E
Fixed-wing, single engine Individual owner
Florida
Standard 2021-04-24 ValidFAA registration status code V: Valid registration. All codes
N3835S Cessna
172E
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-04-24 ValidFAA registration status code V: Valid registration. All codes
N6340E Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2021-04-24 ValidFAA registration status code V: Valid registration. All codes
N2416U Cessna
172D
Fixed-wing, single engine Individual owner
California
Standard 2021-04-20 ValidFAA registration status code V: Valid registration. All codes
N5700R Cessna
172F
Fixed-wing, single engine Co-owned owner
Washington
Standard 2021-04-20 ValidFAA registration status code V: Valid registration. All codes
N725LC Cessna
172F
Fixed-wing, single engine Individual owner
Georgia
Standard 2021-04-20 ValidFAA registration status code V: Valid registration. All codes
N4448B Cessna
170B
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-04-19 ValidFAA registration status code V: Valid registration. All codes
N5587T Cessna
172E
Fixed-wing, single engine Individual owner
Montana
Standard 2021-04-19 ValidFAA registration status code V: Valid registration. All codes
N7924U Cessna
172F
Fixed-wing, single engine Downwind CORP
Brush Prairie, Washington
Standard 2021-04-19 ValidFAA registration status code V: Valid registration. All codes
N3223L Cessna
172H
Fixed-wing, single engine Individual owner
South Carolina
Standard 2021-04-16 ValidFAA registration status code V: Valid registration. All codes
N5327R Cessna
172F
Fixed-wing, single engine Individual owner
Colorado
Standard 2021-04-14 ValidFAA registration status code V: Valid registration. All codes
N5741R Cessna
172G
Fixed-wing, single engine Individual owner
Iowa
Standard 2021-04-14 ValidFAA registration status code V: Valid registration. All codes
N7532X Cessna
172B
Fixed-wing, single engine Individual owner
Washington
Standard 2021-04-14 ValidFAA registration status code V: Valid registration. All codes
N5172A Cessna
172
Fixed-wing, single engine Barnes Timothy Edward
Stephenville, Texas
Standard 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N5589R Cessna
172F
Fixed-wing, single engine Individual owner
Florida
Standard 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N7123A Cessna
172
Fixed-wing, single engine Individual owner
Virginia
Standard 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N8544B Cessna
172
Fixed-wing, single engine Patry Aeronautical Institute
Kalispell, Montana
Standard 2021-04-13 ValidFAA registration status code V: Valid registration. All codes
N44919 Cessna
172
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-04-12 ValidFAA registration status code V: Valid registration. All codes
N8780B Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2021-04-12 ValidFAA registration status code V: Valid registration. All codes
N2769Z Cessna
172
Fixed-wing, single engine Individual owner
New Mexico
Standard 2021-04-10 ValidFAA registration status code V: Valid registration. All codes
N8299X Cessna
172C
Fixed-wing, single engine Individual owner
California
Standard 2021-04-10 ValidFAA registration status code V: Valid registration. All codes
N7657X Cessna
172B
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-04-09 ValidFAA registration status code V: Valid registration. All codes
N1385Y Cessna
172C
Fixed-wing, single engine Individual owner
Illinois
Standard 2021-04-08 ValidFAA registration status code V: Valid registration. All codes
N2403L Cessna
172H
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2021-04-08 ValidFAA registration status code V: Valid registration. All codes
N8826Z Cessna
172H
Fixed-wing, single engine Quincy Flyers LLC
Havana, Florida
Standard 2021-04-08 ValidFAA registration status code V: Valid registration. All codes
N5680A Cessna
172
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-04-06 ValidFAA registration status code V: Valid registration. All codes
N1687F Cessna
172H
Fixed-wing, single engine Tigerair 2020 LLC
Newark, Delaware
Standard 2021-04-05 ValidFAA registration status code V: Valid registration. All codes
N5203F Cessna
172F
Fixed-wing, single engine Dale County Sheriffs Office
Ozark, Alabama
Standard 2021-04-05 ValidFAA registration status code V: Valid registration. All codes
N7377T Cessna
172A
Fixed-wing, single engine Rock Nh Services LLC
Alpine, Texas
Standard 2021-04-05 ValidFAA registration status code V: Valid registration. All codes
N9137B Cessna
172
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2021-04-05 ValidFAA registration status code V: Valid registration. All codes
N2440Y Cessna
172D
Fixed-wing, single engine Morristown Flying Service INC
Talbott, Tennessee
Standard 2021-04-02 ValidFAA registration status code V: Valid registration. All codes
N2851L Cessna
172H
Fixed-wing, single engine Morristown Flying Service INC
Talbott, Tennessee
Standard 2021-04-02 ValidFAA registration status code V: Valid registration. All codes
N4733T Maule
M-4
Fixed-wing, single engine Individual owner
Washington
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N2594Y Cessna
172D
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2021-03-29 ValidFAA registration status code V: Valid registration. All codes
N8362B Cessna
172
Fixed-wing, single engine Individual owner
Connecticut
Standard 2021-03-29 ValidFAA registration status code V: Valid registration. All codes
N5756A Cessna
172
Fixed-wing, single engine Co-owned owner
Texas
Standard 2021-03-27 ValidFAA registration status code V: Valid registration. All codes
N6721A Cessna
172
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2021-03-27 ValidFAA registration status code V: Valid registration. All codes
N1650F Cessna
172H
Fixed-wing, single engine 4 Aces Air LLC
Brandon, Mississippi
Standard 2021-03-25 ValidFAA registration status code V: Valid registration. All codes
N2548Y Cessna
172D
Fixed-wing, single engine Individual owner
Washington
Standard 2021-03-25 ValidFAA registration status code V: Valid registration. All codes
N2530Y Cessna
172D
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2021-03-24 ValidFAA registration status code V: Valid registration. All codes
N3855R Cessna
172H
Fixed-wing, single engine Aircraft Investment Group LLC
Cookeville, Tennessee
Standard 2021-03-23 ValidFAA registration status code V: Valid registration. All codes
N4259F Cessna
172
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2021-03-23 ValidFAA registration status code V: Valid registration. All codes
N1315F Cessna
172G
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2021-03-22 ValidFAA registration status code V: Valid registration. All codes
N3917L Cessna
172G
Fixed-wing, single engine Individual owner
Oregon
Standard 2021-03-22 ValidFAA registration status code V: Valid registration. All codes
N7475T Cessna
172A
Fixed-wing, single engine Individual owner
Florida
Standard 2021-03-22 ValidFAA registration status code V: Valid registration. All codes
N108TS Cessna
170B
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-03-20 ValidFAA registration status code V: Valid registration. All codes
N1808Y Cessna
172C
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-03-20 ValidFAA registration status code V: Valid registration. All codes
N8663U Cessna
172F
Fixed-wing, single engine Socks Flyers LLC
Southgate, Kentucky
Standard 2021-03-20 ValidFAA registration status code V: Valid registration. All codes
N6867A Cessna
172
Fixed-wing, single engine Individual owner
Minnesota
Standard 2021-03-19 ValidFAA registration status code V: Valid registration. All codes
N1731F Cessna
172H
Fixed-wing, single engine Individual owner
Missouri
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N2419Y Cessna
172D
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N3842L Cessna
172G
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N7698T Cessna
172A
Fixed-wing, single engine Individual owner
Michigan
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N900SC Cessna
172E
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N142H Cessna
172A
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N1651F Cessna
172H
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N7312A Cessna
172
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N3532D Cessna
170B
Fixed-wing, single engine Individual owner
Maine
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N4373B Cessna
170B
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N5156A Cessna
172
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2021-03-15 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.