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
N5304T Cessna
172E
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-05-13 ValidFAA registration status code V: Valid registration. All codes
N3875L Cessna
172G
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N7573T Cessna
172A
Fixed-wing, single engine Bogard Aviation LLC
Milan, Missouri
Multiple 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N3910S Cessna
172E
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-05-09 ValidFAA registration status code V: Valid registration. All codes
N5699R Cessna
172F
Fixed-wing, single engine Individual owner
Florida
Standard 2023-05-09 ValidFAA registration status code V: Valid registration. All codes
N7417X Cessna
172B
Fixed-wing, single engine Individual owner
Arkansas
Standard 2023-05-09 ValidFAA registration status code V: Valid registration. All codes
N3296K Globe
GC-1B
Fixed-wing, single engine Swift Museum Foundation INC
Athens, Tennessee
Standard 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N5679A Cessna
172
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N8628B Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N3830K Temco
GC-1B
Fixed-wing, single engine Brian Engineering & Consulting Pllc
Tulsa, Oklahoma
Standard 2023-05-07 ValidFAA registration status code V: Valid registration. All codes
N5811A Cessna
172
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-05-06 ValidFAA registration status code V: Valid registration. All codes
N8585U Cessna
172F
Fixed-wing, single engine Treats Aviation INC
Enumclaw, Washington
Standard 2023-05-06 ValidFAA registration status code V: Valid registration. All codes
N6028A Cessna
172
Fixed-wing, single engine Co-owned owner
New York
Standard 2023-05-05 ValidFAA registration status code V: Valid registration. All codes
N6922X Cessna
172B
Fixed-wing, single engine Iowa Military Aviation Heritage Museum
Ankeny, Iowa
Standard 2023-05-05 ValidFAA registration status code V: Valid registration. All codes
N6961X Cessna
172B
Fixed-wing, single engine Individual owner
Mississippi
Standard 2023-05-05 ValidFAA registration status code V: Valid registration. All codes
N3428D Cessna
170B
Fixed-wing, single engine Individual owner
California
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N5899R Cessna
172G
Fixed-wing, single engine Parrish Aviation Flight Academy LLC
Dallas, Texas
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N3536D Cessna
170B
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-05-02 ValidFAA registration status code V: Valid registration. All codes
N6689A Cessna
172
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2023-05-02 ValidFAA registration status code V: Valid registration. All codes
N7822U Cessna
172E
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-05-02 ValidFAA registration status code V: Valid registration. All codes
N3426A Cessna
172C
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N3666S Cessna
172E
Fixed-wing, single engine Individual owner
California
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N5586T Cessna
172E
Fixed-wing, single engine Bravo Aviation Services LLC
Jasper, Texas
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N6043A Cessna
172
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N3813S Cessna
172E
Fixed-wing, single engine Individual owner
Colorado
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N4331L Cessna
172G
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N5432R Cessna
172F
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N6020R Cessna
172G
Fixed-wing, single engine Fly for Fun Aircraft LLC
Rockville, Maryland
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N7642X Cessna
172B
Fixed-wing, single engine Grey Eagle Aviation LLC
Walker, Minnesota
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N8452X Cessna
172C
Fixed-wing, single engine Las Gaviotas 409 LLC
Safford, Arizona
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N2105Y Cessna
172D
Fixed-wing, single engine Lulays Aviation LLC
Salem, Oregon
Standard 2023-04-28 ValidFAA registration status code V: Valid registration. All codes
N2JH Cessna
172F
Fixed-wing, single engine Reign Air Charter CORP
New Port Richey, Florida
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N3729L Cessna
172G
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N6435B Cessna
172
Fixed-wing, single engine Cookson Brian e
Cookson, Oklahoma
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N7209M Cessna
175
Fixed-wing, single engine Colman Aviation LLC
Pocatello, Idaho
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N7560T Cessna
172A
Fixed-wing, single engine Co-owned owner
California
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N1310F Cessna
172G
Fixed-wing, single engine Humphries Aviation LLC
Maysville, Kentucky
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N2858L Cessna
172H
Fixed-wing, single engine Agile Systems LLC
Simpsonville, South Carolina
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N6429E Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N1828Y Cessna
172C
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N3HL Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N6145E Cessna
172
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N3467C Cessna
170B
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2023-04-24 ValidFAA registration status code V: Valid registration. All codes
N6169E Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2023-04-24 ValidFAA registration status code V: Valid registration. All codes
N7223A Cessna
172
Fixed-wing, single engine Sather Evan
Hayward, California
Standard 2023-04-24 ValidFAA registration status code V: Valid registration. All codes
N3966F Cessna
172
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-04-23 ValidFAA registration status code V: Valid registration. All codes
N2993U Cessna
172E
Fixed-wing, single engine 63 Aviation LLC
Petoskey, Michigan
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N4476L Cessna
172G
Fixed-wing, single engine P&N CORP
Marion, Iowa
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N5350R Cessna
172F
Fixed-wing, single engine North Fergus Flying Club
Winifred, Montana
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N8150L Cessna
172H
Fixed-wing, single engine Kal Aero Flight Instruction LLC
Mattawan, Michigan
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N375LA Cessna
172F
Fixed-wing, single engine Withheld at owner's request
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N5462R Cessna
172F
Fixed-wing, single engine Individual owner
Idaho
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N7753U Cessna
172E
Fixed-wing, single engine Individual owner
Texas
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N8282B Cessna
172
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N1458Y Cessna
172C
Fixed-wing, single engine Tln Aviation LLC
Stanwood, Washington
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N4322L Cessna
172G
Fixed-wing, single engine Individual owner
Florida
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N6600T Cessna
172D
Fixed-wing, single engine Jtf Aviation LLC
River Falls, Wisconsin
Standard 2023-04-19 ValidFAA registration status code V: Valid registration. All codes
N7697T Cessna
172A
Fixed-wing, single engine Co-owned owner
California
Standard 2023-04-19 ValidFAA registration status code V: Valid registration. All codes
N842WB Cessna
172
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-04-19 ValidFAA registration status code V: Valid registration. All codes
N3582D Cessna
170B
Fixed-wing, single engine Individual owner
Washington
Standard 2023-04-18 ValidFAA registration status code V: Valid registration. All codes
N5531T Cessna
172E
Fixed-wing, single engine Individual owner
California
Standard 2023-04-18 ValidFAA registration status code V: Valid registration. All codes
N6655A Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2023-04-18 ValidFAA registration status code V: Valid registration. All codes
N2445Y Cessna
172D
Fixed-wing, single engine New England Aircraft Detailing LLC
Webster, Massachusetts
Standard 2023-04-17 ValidFAA registration status code V: Valid registration. All codes
N3533S Cessna
172E
Fixed-wing, single engine Co-owned owner
Utah
Standard 2023-04-17 ValidFAA registration status code V: Valid registration. All codes
N6260E Cessna
172
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-04-17 ValidFAA registration status code V: Valid registration. All codes
N7564X Cessna
172B
Fixed-wing, single engine Sodah One LLC
San Ramon, California
Standard 2023-04-17 ValidFAA registration status code V: Valid registration. All codes
N7882X Cessna
172B
Fixed-wing, single engine Individual owner
California
Standard 2023-04-17 ValidFAA registration status code V: Valid registration. All codes
N8859B Cessna
172
Fixed-wing, single engine Individual owner
California
Standard 2023-04-17 ValidFAA registration status code V: Valid registration. All codes
N3963L Cessna
172G
Fixed-wing, single engine N3963L LLC
Bishop, Georgia
Standard 2023-04-15 ValidFAA registration status code V: Valid registration. All codes
N3805L Cessna
172G
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-04-14 ValidFAA registration status code V: Valid registration. All codes
N7874T Cessna
172A
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-04-14 ValidFAA registration status code V: Valid registration. All codes
N1430Y Cessna
172C
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-04-13 ValidFAA registration status code V: Valid registration. All codes
N3880R Cessna
172H
Fixed-wing, single engine C172 Nancy LLC
Euclid, Ohio
Standard 2023-04-13 ValidFAA registration status code V: Valid registration. All codes
N62PB Cessna
172C
Fixed-wing, single engine Alabama Fly Boys LLC
Cropwell, Alabama
Standard 2023-04-12 ValidFAA registration status code V: Valid registration. All codes
N9843X Cessna
172H
Fixed-wing, single engine Individual owner
California
Standard 2023-04-12 ValidFAA registration status code V: Valid registration. All codes
N3016U Cessna
172E
Fixed-wing, single engine Valley Wings Flight School LLC
Harlingen, Texas
Standard 2023-04-11 ValidFAA registration status code V: Valid registration. All codes
N3882S Cessna
172E
Fixed-wing, single engine Individual owner
Arkansas
Standard 2023-04-11 ValidFAA registration status code V: Valid registration. All codes
N54GC Cessna
172
Fixed-wing, single engine Individual owner
Idaho
Standard 2023-04-11 ValidFAA registration status code V: Valid registration. All codes
N7060A Cessna
172
Fixed-wing, single engine Individual owner
Iowa
Standard 2023-04-11 ValidFAA registration status code V: Valid registration. All codes
N3912S Cessna
172E
Fixed-wing, single engine Individual owner
Kansas
Standard 2023-04-10 ValidFAA registration status code V: Valid registration. All codes
N1667F Cessna
172H
Fixed-wing, single engine Varner Properties LLC
Bristow, Oklahoma
Standard 2023-04-08 ValidFAA registration status code V: Valid registration. All codes
N5639R Cessna
172F
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-04-08 ValidFAA registration status code V: Valid registration. All codes
N7595X Cessna
172B
Fixed-wing, single engine Individual owner
California
Standard 2023-04-08 ValidFAA registration status code V: Valid registration. All codes
N2583L Cessna
172H
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-04-07 ValidFAA registration status code V: Valid registration. All codes
N5513T Cessna
172E
Fixed-wing, single engine Individual owner
Colorado
Standard 2023-04-05 ValidFAA registration status code V: Valid registration. All codes
N8624U Cessna
172F
Fixed-wing, single engine Individual owner
Florida
Standard 2023-04-05 ValidFAA registration status code V: Valid registration. All codes
N8889U Cessna
172F
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2023-04-05 ValidFAA registration status code V: Valid registration. All codes
N2515L Cessna
172H
Fixed-wing, single engine Clear Air Aviation LLC
Talkeetna, Alaska
Standard 2023-04-04 ValidFAA registration status code V: Valid registration. All codes
N4130C Maule
BEE DEE M-4
Fixed-wing, single engine Co-owned owner
California
Standard 2023-04-04 ValidFAA registration status code V: Valid registration. All codes
N6579E Cessna
175
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2023-04-04 ValidFAA registration status code V: Valid registration. All codes
N1691F Cessna
172H
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-04-03 ValidFAA registration status code V: Valid registration. All codes
N2604D Cessna
170B
Fixed-wing, single engine O4Dflys LLC
Enterprise, Oregon
Standard 2023-04-02 ValidFAA registration status code V: Valid registration. All codes
N6241E Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2023-04-02 ValidFAA registration status code V: Valid registration. All codes
N8709B Cessna
172
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-04-02 ValidFAA registration status code V: Valid registration. All codes
N2311U Cessna
172D
Fixed-wing, single engine Dcy Flyers INC
Montgomery, Indiana
Standard 2023-04-01 ValidFAA registration status code V: Valid registration. All codes
N2619U Cessna
172D
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-04-01 ValidFAA registration status code V: Valid registration. All codes
N3834L Cessna
172G
Fixed-wing, single engine Zoltak Aviation LLC
Perry, Georgia
Standard 2023-04-01 ValidFAA registration status code V: Valid registration. All codes
N3917R Cessna
172H
Fixed-wing, single engine N3917R LLC
Omaha, Nebraska
Standard 2023-04-01 ValidFAA registration status code V: Valid registration. All codes
N7738U Cessna
172E
Fixed-wing, single engine Individual owner
West Virginia
Standard 2023-04-01 ValidFAA registration status code V: Valid registration. All codes
N8118B Cessna
172
Fixed-wing, single engine Individual owner
Texas
Standard 2023-04-01 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.