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
N1023B Cessna
172
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-01-13 ValidFAA registration status code V: Valid registration. All codes
N374 Whittman Tail Wind
W9L
Fixed-wing, single engine Co-owned owner
North Carolina
Experimental 2025-01-10 ValidFAA registration status code V: Valid registration. All codes
N159AE Cessna
172D
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N2539Y Cessna
172D
Fixed-wing, single engine Oly LLC
Onida, South Dakota
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N6018A Cessna
172
Fixed-wing, single engine Individual owner
Maine
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N3599S Cessna
172E
Fixed-wing, single engine Individual owner
Minnesota
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N5713R Cessna
172F
Fixed-wing, single engine Airspeed Marketing LLC
Phoenix, Arizona
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N6998A Cessna
172
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N1371F Cessna
172G
Fixed-wing, single engine Co-owned owner
Texas
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N3096U Cessna
172E
Fixed-wing, single engine Co-owned owner
Texas
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N8167X Cessna
172B
Fixed-wing, single engine Abel Jacob
Bland, Missouri
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N8367U Cessna
172F
Fixed-wing, single engine Tb Maintenance and Cleaning LLC
Deltona, Florida
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N5107F Cessna
172H
Fixed-wing, single engine Fly Idaho LLC
Meridian, Idaho
Standard 2025-01-04 ValidFAA registration status code V: Valid registration. All codes
N378LA Cessna
172F
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2025-01-03 ValidFAA registration status code V: Valid registration. All codes
N2669L Cessna
172H
Fixed-wing, single engine Rotormate LLC
Royse City, Texas
Standard 2024-12-31 ValidFAA registration status code V: Valid registration. All codes
N172DT Cessna
172G
Fixed-wing, single engine Milam Six LLC
Milam, Texas
Standard 2024-12-30 ValidFAA registration status code V: Valid registration. All codes
N2430U Cessna
172D
Fixed-wing, single engine Individual owner
Florida
Standard 2024-12-26 ValidFAA registration status code V: Valid registration. All codes
N8302X Cessna
172C
Fixed-wing, single engine Individual owner
Florida
Standard 2024-12-26 ValidFAA registration status code V: Valid registration. All codes
N2557U Cessna
172D
Fixed-wing, single engine Wings of Hope
Chesterfield, Missouri
Standard 2024-12-23 ValidFAA registration status code V: Valid registration. All codes
N3282L Cessna
172H
Fixed-wing, single engine Individual owner
California
Standard 2024-12-23 ValidFAA registration status code V: Valid registration. All codes
N6963A Cessna
172
Fixed-wing, single engine Florida Keys Flight Academy LLC
Marathon, Florida
Standard 2024-12-21 ValidFAA registration status code V: Valid registration. All codes
N6348E Cessna
172
Fixed-wing, single engine Humble Aviation LLC
Russellville, Arkansas
Standard 2024-12-20 ValidFAA registration status code V: Valid registration. All codes
N7795X Cessna
172B
Fixed-wing, single engine Individual owner
Colorado
Standard 2024-12-20 ValidFAA registration status code V: Valid registration. All codes
N5877A Cessna
172
Fixed-wing, single engine Mangham Aviation LLC
Mullin, Texas
Standard 2024-12-19 ValidFAA registration status code V: Valid registration. All codes
N5742T Cessna
172E
Fixed-wing, single engine Skyhawkfive LLC
Claremont, New Hampshire
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N8186U Cessna
172F
Fixed-wing, single engine Lake Area Technical College
Watertown, South Dakota
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N8470U Cessna
172F
Fixed-wing, single engine Eagle Sky Patrol
Deadwood, South Dakota
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N2671L Cessna
172H
Fixed-wing, single engine Nbl Aviation LLC
Woodway, Texas
Standard 2024-12-17 ValidFAA registration status code V: Valid registration. All codes
N172JA Cessna
172G
Fixed-wing, single engine Individual owner
Texas
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N6993A Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2024-12-13 ValidFAA registration status code V: Valid registration. All codes
N8012X Cessna
172B
Fixed-wing, single engine Individual owner
Washington
Standard 2024-12-13 ValidFAA registration status code V: Valid registration. All codes
N1549Y Cessna
172C
Fixed-wing, single engine Co-owned owner
Maryland
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N2514Y Cessna
172D
Fixed-wing, single engine Co-owned owner
New York
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N2865L Cessna
172H
Fixed-wing, single engine Ifr LLC
Springfield, Missouri
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N4101F Cessna
172
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N1348F Cessna
172G
Fixed-wing, single engine Individual owner
California
Standard 2024-12-07 ValidFAA registration status code V: Valid registration. All codes
N4401B Cessna
170B
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-12-04 ValidFAA registration status code V: Valid registration. All codes
N2522W Cessna
172D
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N2652L Cessna
172H
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N5412R Cessna
172F
Fixed-wing, single engine Youngstown Warren Development Partners
Youngstown, Ohio
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N7308T Cessna
172A
Fixed-wing, single engine Individual owner
North Dakota
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N7853T Cessna
172A
Fixed-wing, single engine Co-owned owner
Washington
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N8381U Cessna
172F
Fixed-wing, single engine Furyious Aviation LLC
Bossier City, Louisiana
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N9849T Cessna
172A
Fixed-wing, single engine Individual owner
Mississippi
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N5405T Cessna
172E
Fixed-wing, single engine Agt Tech CORP
Hialeah, Florida
Standard 2024-11-21 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N7080T Cessna
172
Fixed-wing, single engine Kingdom Planes LLC
Decatur, Texas
Standard 2024-11-21 ValidFAA registration status code V: Valid registration. All codes
N8241X Cessna
172C
Fixed-wing, single engine Rotormate LLC
Royse City, Texas
Standard 2024-11-21 ValidFAA registration status code V: Valid registration. All codes
N8601B Cessna
172
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-11-21 ValidFAA registration status code V: Valid registration. All codes
N7161T Cessna
172A
Fixed-wing, single engine Individual owner
Florida
Standard 2024-11-20 ValidFAA registration status code V: Valid registration. All codes
N6488E Cessna
172
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-11-18 ValidFAA registration status code V: Valid registration. All codes
N2593U Cessna
172D
Fixed-wing, single engine Individual owner
California
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N4647L Cessna
172G
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N8144X Cessna
172B
Fixed-wing, single engine Individual owner
California
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N4205F Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2024-11-14 ValidFAA registration status code V: Valid registration. All codes
N8265U Cessna
172F
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-11-13 ValidFAA registration status code V: Valid registration. All codes
N1604Y Cessna
172C
Fixed-wing, single engine Ocean Isle Aviation
Ocean Isle Beach, North Carolina
Standard 2024-11-12 ValidFAA registration status code V: Valid registration. All codes
N3505C Cessna
170B
Fixed-wing, single engine Co-owned owner
Montana
Standard 2024-11-09 ValidFAA registration status code V: Valid registration. All codes
N7373A Cessna
172
Fixed-wing, single engine Individual owner
Washington
Standard 2024-11-08 ValidFAA registration status code V: Valid registration. All codes
N7770A Cessna
172F
Fixed-wing, single engine Individual owner
Texas
Standard 2024-11-08 ValidFAA registration status code V: Valid registration. All codes
N1772F Cessna
172H
Fixed-wing, single engine Tia Aviation LLC
Hot Springs, Arkansas
Standard 2024-11-07 ValidFAA registration status code V: Valid registration. All codes
N4419L Cessna
172G
Fixed-wing, single engine Mil2Atp INC
Pikeville, North Carolina
Standard 2024-11-07 ValidFAA registration status code V: Valid registration. All codes
N5976A Cessna
172
Fixed-wing, single engine N5976A LLC
Marathon, Florida
Standard 2024-11-07 ValidFAA registration status code V: Valid registration. All codes
N3515S Cessna
172E
Fixed-wing, single engine Tm Aviation Services LLC
Riverside, California
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N3959L Cessna
172G
Fixed-wing, single engine V1Vr LLC
Wilmington, Delaware
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N99EB Cessna
172D
Fixed-wing, single engine Air Wings Enterprise LLC
Roca, Nebraska
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N336RS Cessna
172F
Fixed-wing, single engine Airspeed Marketing LLC
Phoenix, Arizona
Standard 2024-11-05 ValidFAA registration status code V: Valid registration. All codes
N4494B Cessna
170B
Fixed-wing, single engine Individual owner
Washington
Standard 2024-11-05 ValidFAA registration status code V: Valid registration. All codes
N7978U Cessna
172F
Fixed-wing, single engine Northwoods Gateway Aviation LLC
Antigo, Wisconsin
Standard 2024-11-05 ValidFAA registration status code V: Valid registration. All codes
N5564R Cessna
172F
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-11-04 ValidFAA registration status code V: Valid registration. All codes
N2109Y Cessna
172D
Fixed-wing, single engine Individual owner
New York
Standard 2024-11-02 ValidFAA registration status code V: Valid registration. All codes
N4050F Cessna
172
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N4270L Cessna
172G
Fixed-wing, single engine Individual owner
Texas
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N4446L Cessna
172G
Fixed-wing, single engine C and T Aviation INC
Madera, California
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N5403R Cessna
172F
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N6668A Cessna
172
Fixed-wing, single engine Co-owned owner
Washington
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N6822A Cessna
172
Fixed-wing, single engine Stewart Brock Allen
Bartlett, Tennessee
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N2487Y Cessna
172D
Fixed-wing, single engine Individual owner
Texas
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N3612L Cessna
172G
Fixed-wing, single engine Clean Waste Solutions LLC
Indianapolis, Indiana
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N688W Cessna
172
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N7139A Cessna
172
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N7491A Cessna
172
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N1892Y Cessna
172C
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N33356 Callair
A-3
Fixed-wing, single engine Individual owner
Utah
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N6406E Cessna
172
Fixed-wing, single engine Individual owner
New York
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N8693U Cessna
172F
Fixed-wing, single engine Individual owner
Colorado
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N2023Y Cessna
172C
Fixed-wing, single engine Co-owned owner
California
Standard 2024-10-26 ValidFAA registration status code V: Valid registration. All codes
N8148B Cessna
172
Fixed-wing, single engine Individual owner
Washington
Standard 2024-10-26 ValidFAA registration status code V: Valid registration. All codes
N401GT Cessna
172H
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-10-25 ValidFAA registration status code V: Valid registration. All codes
N2098Y Cessna
172D
Fixed-wing, single engine Level Altitude LLC
Seward, Nebraska
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N2419L Cessna
172H
Fixed-wing, single engine 2419L LLC
Jackson, Michigan
Multiple 2024-10-23 ValidFAA registration status code V: Valid registration. All codes
N4399L Cessna
172G
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2024-10-23 ValidFAA registration status code V: Valid registration. All codes
N1629F Cessna
172H
Fixed-wing, single engine Hurricane Enterprise LLC
Buffalo, Wyoming
Standard 2024-10-19 ValidFAA registration status code V: Valid registration. All codes
N5059A Cessna
172
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-10-19 ValidFAA registration status code V: Valid registration. All codes
N7248T Cessna
172A
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-10-19 ValidFAA registration status code V: Valid registration. All codes
N891SR Cessna
172G
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-10-19 ValidFAA registration status code V: Valid registration. All codes
N3905R Cessna
172H
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N4043F Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N3942R Cessna
172H
Fixed-wing, single engine Oracle Aviation LLC
Omaha, Nebraska
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N4666L Cessna
172G
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N5932A Cessna
172
Fixed-wing, single engine Aquila Aviation LLC
Pompano Beach, Florida
Standard 2024-10-17 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.