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
N1456Y Cessna
172C
Fixed-wing, single engine Individual owner
New York
Standard 2024-04-17 ValidFAA registration status code V: Valid registration. All codes
N6496B Cessna
172
Fixed-wing, single engine Startup Aviation Management LLC
Lakeway, Texas
Standard 2024-04-17 ValidFAA registration status code V: Valid registration. All codes
N8262X Cessna
172C
Fixed-wing, single engine Individual owner
Montana
Standard 2024-04-17 ValidFAA registration status code V: Valid registration. All codes
N2486Y Cessna
172D
Fixed-wing, single engine Carfinder LLC
Huntington Station, New York
Standard 2024-04-16 ValidFAA registration status code V: Valid registration. All codes
N2875L Cessna
172H
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-04-15 ValidFAA registration status code V: Valid registration. All codes
N3636L Cessna
172G
Fixed-wing, single engine Fllsend Aviation LLC
Kaysville, Utah
Standard 2024-04-15 ValidFAA registration status code V: Valid registration. All codes
N6447E Cessna
172
Fixed-wing, single engine Individual owner
Louisiana
Standard 2024-04-15 ValidFAA registration status code V: Valid registration. All codes
N7116T Cessna
172
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-04-15 ValidFAA registration status code V: Valid registration. All codes
N8047X Cessna
172B
Fixed-wing, single engine Individual owner
Utah
Standard 2024-04-15 ValidFAA registration status code V: Valid registration. All codes
N8162U Cessna
172F
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-04-15 ValidFAA registration status code V: Valid registration. All codes
N8526B Cessna
172
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-04-14 ValidFAA registration status code V: Valid registration. All codes
N7716U Cessna
172E
Fixed-wing, single engine Opportune Entity LLC
Sanger, Texas
Standard 2024-04-12 ValidFAA registration status code V: Valid registration. All codes
N2423U Cessna
172D
Fixed-wing, single engine Chord Line LLC
Homer, Alaska
Standard 2024-04-11 ValidFAA registration status code V: Valid registration. All codes
N3749F Cessna
172H
Fixed-wing, single engine Leduc Kramer LLC
Live Oak, Florida
Standard 2024-04-10 ValidFAA registration status code V: Valid registration. All codes
N7671X Cessna
172B
Fixed-wing, single engine Individual owner
Texas
Standard 2024-04-10 ValidFAA registration status code V: Valid registration. All codes
N8207L Cessna
172H
Fixed-wing, single engine Aero Biz Development Group LLC
Washington, District of Columbia
Standard 2024-04-10 ValidFAA registration status code V: Valid registration. All codes
N2634L Cessna
172H
Fixed-wing, single engine Metal Mistress Aviation LLC
Meadowview, Virginia
Standard 2024-04-09 ValidFAA registration status code V: Valid registration. All codes
N2761U Cessna
172D
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-04-08 ValidFAA registration status code V: Valid registration. All codes
N2803U Cessna
172D
Fixed-wing, single engine Swan Aviation Ministries INC
Laurel Hill, Florida
Standard 2024-04-08 ValidFAA registration status code V: Valid registration. All codes
N5747R Cessna
172G
Fixed-wing, single engine Co-owned owner
New York
Standard 2024-04-08 ValidFAA registration status code V: Valid registration. All codes
N8911B Cessna
172
Fixed-wing, single engine Individual owner
Maine
Standard 2024-04-08 ValidFAA registration status code V: Valid registration. All codes
N4438L Cessna
172G
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-04-07 ValidFAA registration status code V: Valid registration. All codes
N6036R Cessna
172G
Fixed-wing, single engine Individual owner
New Jersey
Standard 2024-04-07 ValidFAA registration status code V: Valid registration. All codes
N3842S Cessna
172E
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-04-05 ValidFAA registration status code V: Valid registration. All codes
N7602X Cessna
172B
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-04-05 ValidFAA registration status code V: Valid registration. All codes
N2512U Cessna
172D
Fixed-wing, single engine Native Sons Aviation LLC
Lake Placid, Florida
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N6800X Cessna
172A
Fixed-wing, single engine New Vision Aviation INC
Fresno, California
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N1697Y Cessna
172C
Fixed-wing, single engine Individual owner
New Jersey
Standard 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N1661F Cessna
172H
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N5313T Cessna
172E
Fixed-wing, single engine Individual owner
Indiana
Standard 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N7605X Cessna
172B
Fixed-wing, single engine Individual owner
North Carolina
Multiple 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N2550L Cessna
172H
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-04-01 ValidFAA registration status code V: Valid registration. All codes
N7177T Cessna
172A
Fixed-wing, single engine Individual owner
Kentucky
Standard 2024-04-01 ValidFAA registration status code V: Valid registration. All codes
N5320T Cessna
172E
Fixed-wing, single engine Individual owner
Iowa
Standard 2024-03-31 ValidFAA registration status code V: Valid registration. All codes
N3662L Cessna
172G
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N3864R Cessna
172H
Fixed-wing, single engine R Thimesch Construction LLC
Spivey, Kansas
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N5756R Cessna
172G
Fixed-wing, single engine Cm3 LLC
North Las Vegas, Nevada
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N3717F Cessna
172H
Fixed-wing, single engine Lake Area Technical College
Watertown, South Dakota
Standard 2024-03-28 ValidFAA registration status code V: Valid registration. All codes
N4119L Cessna
172G
Fixed-wing, single engine Dff LLC
Oak Harbor, Washington
Standard 2024-03-28 ValidFAA registration status code V: Valid registration. All codes
N6262E Cessna
172
Fixed-wing, single engine Bauer Flying Services LLC
Reese, Michigan
Standard 2024-03-28 ValidFAA registration status code V: Valid registration. All codes
N8386X Cessna
172C
Fixed-wing, single engine School Board of Leon County Florida
Tallahassee, Florida
Standard 2024-03-27 ValidFAA registration status code V: Valid registration. All codes
N4242F Cessna
172
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2024-03-26 ValidFAA registration status code V: Valid registration. All codes
N5728A Cessna
172
Fixed-wing, single engine Individual owner
Indiana
Standard 2024-03-25 ValidFAA registration status code V: Valid registration. All codes
N1719F Cessna
172H
Fixed-wing, single engine Moran Aviation LLC
Rose Bud, Arkansas
Standard 2024-03-24 ValidFAA registration status code V: Valid registration. All codes
N7959U Cessna
172F
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-03-21 ValidFAA registration status code V: Valid registration. All codes
N8520B Cessna
172
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2024-03-21 ValidFAA registration status code V: Valid registration. All codes
N2061Y Cessna
172D
Fixed-wing, single engine Bronzestar LLC
Butler, Tennessee
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N2463U Cessna
172D
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N3622S Cessna
172E
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N5485T Cessna
172E
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N8151L Cessna
172H
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N3702S Cessna
172E
Fixed-wing, single engine Individual owner
Kentucky
Standard 2024-03-19 ValidFAA registration status code V: Valid registration. All codes
N5620R Cessna
172F
Fixed-wing, single engine Individual owner
Louisiana
Standard 2024-03-19 ValidFAA registration status code V: Valid registration. All codes
N6402E Cessna
172
Fixed-wing, single engine Individual owner
Montana
Standard 2024-03-19 ValidFAA registration status code V: Valid registration. All codes
N7191T Cessna
172A
Fixed-wing, single engine Individual owner
New Mexico
Standard 2024-03-19 ValidFAA registration status code V: Valid registration. All codes
N1378H Aeronca
15AC
Fixed-wing, single engine Individual owner
Michigan
Multiple 2024-03-18 ValidFAA registration status code V: Valid registration. All codes
N4393B Cessna
170B
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-03-18 ValidFAA registration status code V: Valid registration. All codes
N6988A Cessna
172
Fixed-wing, single engine Withheld at owner's request
Standard 2024-03-18 ValidFAA registration status code V: Valid registration. All codes
N7962B Cessna
172
Fixed-wing, single engine Individual owner
Washington
Standard 2024-03-18 ValidFAA registration status code V: Valid registration. All codes
N1882Y Cessna
172C
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-03-16 ValidFAA registration status code V: Valid registration. All codes
N635M Cessna
172F
Fixed-wing, single engine Spl Invest LLC
Chandler, Arizona
Standard 2024-03-15 ValidFAA registration status code V: Valid registration. All codes
N7476T Cessna
172A
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-03-15 ValidFAA registration status code V: Valid registration. All codes
N8143U Cessna
172F
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-15 ValidFAA registration status code V: Valid registration. All codes
N7587X Cessna
172B
Fixed-wing, single engine Brown Bomber LLC
Missoula, Montana
Standard 2024-03-14 ValidFAA registration status code V: Valid registration. All codes
N7443T Cessna
172A
Fixed-wing, single engine Individual owner
Florida
Standard 2024-03-13 ValidFAA registration status code V: Valid registration. All codes
N7471T Cessna
172A
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-03-13 ValidFAA registration status code V: Valid registration. All codes
N181TT Cessna
172F
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-12 ValidFAA registration status code V: Valid registration. All codes
N7843U Cessna
172F
Fixed-wing, single engine Harkrader Aviation LLC
Louisa, Virginia
Standard 2024-03-11 ValidFAA registration status code V: Valid registration. All codes
N7746X Cessna
172B
Fixed-wing, single engine Co-owned owner
Washington
Standard 2024-03-10 ValidFAA registration status code V: Valid registration. All codes
N2654L Cessna
172H
Fixed-wing, single engine Individual owner
Florida
Standard 2024-03-08 ValidFAA registration status code V: Valid registration. All codes
N4490B Cessna
170B
Fixed-wing, single engine Co-owned owner
Florida
Standard 2024-03-08 ValidFAA registration status code V: Valid registration. All codes
N4629L Cessna
172G
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-03-08 ValidFAA registration status code V: Valid registration. All codes
N4358L Cessna
172G
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-07 ValidFAA registration status code V: Valid registration. All codes
N5766A Cessna
172
Fixed-wing, single engine Soma Holdings LLC
Wasilla, Alaska
Standard 2024-03-07 ValidFAA registration status code V: Valid registration. All codes
N5640R Cessna
172F
Fixed-wing, single engine Individual owner
Missouri
Standard 2024-03-06 ValidFAA registration status code V: Valid registration. All codes
N2407R Cessna
170B
Fixed-wing, single engine Individual owner
Washington
Standard 2024-03-05 ValidFAA registration status code V: Valid registration. All codes
N2746L Cessna
172H
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-03-05 ValidFAA registration status code V: Valid registration. All codes
N7196A Cessna
172
Fixed-wing, single engine L-Bird LLC
Hood River, Oregon
Standard 2024-03-05 ValidFAA registration status code V: Valid registration. All codes
N23JF Cessna
170B
Fixed-wing, single engine Simba Air LLC
Mt Juliet, Tennessee
Standard 2024-03-04 ValidFAA registration status code V: Valid registration. All codes
N955RS Cessna
172D
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-03-04 ValidFAA registration status code V: Valid registration. All codes
N1334Y Cessna
172C
Fixed-wing, single engine Individual owner
California
Standard 2024-03-03 ValidFAA registration status code V: Valid registration. All codes
N2725L Cessna
172H
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-03 ValidFAA registration status code V: Valid registration. All codes
N7303A Cessna
172
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2024-03-02 ValidFAA registration status code V: Valid registration. All codes
N8218X Cessna
172B
Fixed-wing, single engine Individual owner
California
Standard 2024-03-01 ValidFAA registration status code V: Valid registration. All codes
N1456F Cessna
172H
Fixed-wing, single engine Co-owned owner
California
Standard 2024-02-29 ValidFAA registration status code V: Valid registration. All codes
N3619S Cessna
172E
Fixed-wing, single engine Fitch Aviation Holdings LLC
Pottsboro, Texas
Standard 2024-02-29 ValidFAA registration status code V: Valid registration. All codes
N5323R Cessna
172F
Fixed-wing, single engine Old Grove Aviation LLC
Port Charlotte, Florida
Standard 2024-02-29 ValidFAA registration status code V: Valid registration. All codes
N5434R Cessna
172F
Fixed-wing, single engine Florida Keys Flight Academy LLC
Marathon, Florida
Standard 2024-02-29 ValidFAA registration status code V: Valid registration. All codes
N5569R Cessna
172F
Fixed-wing, single engine Aluminum Falcon LLC
Lakeland, Tennessee
Standard 2024-02-29 ValidFAA registration status code V: Valid registration. All codes
N1594Y Cessna
172C
Fixed-wing, single engine Individual owner
Nebraska
Standard 2024-02-28 ValidFAA registration status code V: Valid registration. All codes
N1648F Cessna
172H
Fixed-wing, single engine Individual owner
Virginia
Standard 2024-02-28 ValidFAA registration status code V: Valid registration. All codes
N2976U Cessna
172G
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-02-28 ValidFAA registration status code V: Valid registration. All codes
N7252A Cessna
172
Fixed-wing, single engine Individual owner
New York
Standard 2024-02-28 ValidFAA registration status code V: Valid registration. All codes
N5743T Cessna
172E
Fixed-wing, single engine Ray Aviation LLC
Burkett, Texas
Standard 2024-02-27 ValidFAA registration status code V: Valid registration. All codes
N8230B Cessna
172
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-02-27 ValidFAA registration status code V: Valid registration. All codes
N8737U Cessna
172F
Fixed-wing, single engine Miss Lou Flight LLC
Vidalia, Louisiana
Standard 2024-02-26 ValidFAA registration status code V: Valid registration. All codes
N2313U Cessna
172D
Fixed-wing, single engine Individual owner
Nevada
Standard 2024-02-24 ValidFAA registration status code V: Valid registration. All codes
N5404T Cessna
172E
Fixed-wing, single engine Individual owner
Mississippi
Standard 2024-02-23 ValidFAA registration status code V: Valid registration. All codes
N8153U Cessna
172F
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-02-22 ValidFAA registration status code V: Valid registration. All codes
N3708S Cessna
172E
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2024-02-21 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.