Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming O-320 series

27,316 aircraft on the U.S. register carry a Lycoming O-320 series engine, rated at about 180 horsepower. The Cessna 172 Skyhawk is the model most often fitted with it (9,463 aircraft). The aircraft carrying it were built between 1949 and 2026.

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 Lycoming O-320 series (2 codes). FAA spellings: 0-320 SERIES · O-320 SERIES.

Fitted to model families

Cessna 172 Skyhawk9,463Piper PA-28 Cherokee, Warrior, Archer and Arrow6,844Piper PA-18 Super Cub2,393Piper PA-22 Tri-Pacer and Colt1,660Grumman American Avn. Corp. AA-5 Traveler, Cheetah and Tiger566Bellanca 7 Citabria563Cessna 177 Cardinal398Piper PA-23 Apache and Aztec347Robinson R22276Champion 7 Citabria and Champ266American Champion Aircraft 7 Citabria and Champ249Piper PA-12 Super Cruiser149

Cessna 172 Skyhawk · Piper PA-28 Cherokee, Warrior, Archer and Arrow · Piper PA-18 Super Cub · Piper PA-22 Tri-Pacer and Colt · Grumman American Avn. Corp. AA-5 Traveler, Cheetah and Tiger · Bellanca 7 Citabria · Cessna 177 Cardinal · Piper PA-23 Apache and Aztec · Robinson R22 · Champion 7 Citabria and Champ

Where they are owner's state

Texas2,349California2,123Florida2,075Alaska1,796Washington1,004Ohio731Georgia718Minnesota686North Carolina674Arizona659

Kind of aircraft

Piston singles26,598 (97%)Piston twins414 (2%)Helicopters303 (1%)Gliders1 (0.0%)

When the aircraft were built by decade

What the FAA has certified, ordered and been told about the Lycoming O-320 series the component layer

No FAA order in the current files names this engine series. Operators and repair shops have filed 349 failure reports with the FAA since 1995, 19 of them in the last ten years.

Failure reports 349 since · what operators and shops told the FAA

Parts most often reported as the reports name them

Spar18Tube17Cylinder15Bulkhead9Alternator8Control Cable8Bolt7Carburetor7Fitting6Float6

Latest reports

2026-09-03Gascolator: dirty

2026-05-19Impulse Coupling: unserviceable

2026-03-10Cylinder Head: cracked

2026-03-05Cylinder: cracked

2025-11-24Cylinder: cracked

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

Cessna 172 Skyhawk 9,463 with this engine series
Piper PA-28 Cherokee, Warrior, Archer and Arrow 6,844 with this engine series
Piper PA-18 Super Cub 2,393 with this engine series
Piper PA-22 Tri-Pacer and Colt 1,660 with this engine series
Grumman American Avn. Corp. AA-5 Traveler, Cheetah and Tiger 566 with this engine series
Bellanca 7 Citabria 563 with this engine series
Cessna 177 Cardinal 398 with this engine series
Piper PA-23 Apache and Aztec 347 with this engine series

Where they are

Texas 2,349 of these aircraft
California 2,123 of these aircraft
Florida 2,075 of these aircraft
Alaska 1,796 of these aircraft
Washington 1,004 of these aircraft

Biggest operators

Wings Over Texas Holdings LLC 107 of these aircraft
American Patrols INC 61 of these aircraft
Paris Air INC 33 of these aircraft
Civil Air Patrol INC 33 of these aircraft
International Air Services INC Trustee 30 of these aircraft

Airworthiness

Failure reports on the Lycoming O-320 series 349 reports since 1995

Analytics

These connections as data: /graph/engine/lycoming-o-320-series.json · about the eFlight graph.

Aircraft newest certificates first · 27,316

Tail no.	Maker and model	Group	Owner and base	Certificate	Registered	Status
N2174E	Piper PA-28-161	Fixed-wing, single engine	Hans Aviation INC Davie, Florida	Standard	2026-07-20	Valid
N501TS	Cessna 172M	Fixed-wing, single engine	Flying Tigers Flight School LLC Houston, Texas	Standard	2026-07-20	Valid
N5441L	Grumman American Avn. Corp. AA-5	Fixed-wing, single engine	Top Flight Aviation Snh LLC Savannah, Tennessee	Standard	2026-07-20	Valid
N9284A	Piper PA-28-161	Fixed-wing, single engine	Co-owned owner Massachusetts	Standard	2026-07-20	Valid
N17PT	Biggs Craig RV-4	Fixed-wing, single engine	Individual owner Texas	Experimental	2026-07-18	Valid
N518BB	New Piper PA-28-161	Fixed-wing, single engine	J S Aviation CORP Farmingdale, New York	Standard	2026-07-18	Valid
N6836B	Piper PA-22S-150	Fixed-wing, single engine	Individual owner Tennessee	Standard	2026-07-18	Valid
N6931D	Piper PA-22-150	Fixed-wing, single engine	Individual owner Oregon	Standard	2026-07-18	Valid
N9469E	Cessna 172N	Fixed-wing, single engine	Individual owner Kentucky	Standard	2026-07-18	Valid
N97055	Cessna 172P	Fixed-wing, single engine	Skaya Aircraft LLC Kalispell, Montana	Standard	2026-07-18	Valid
N13386	Cessna 172M	Fixed-wing, single engine	Crosswind Aviation of Oklahoma LLC Stillwater, Oklahoma	Standard	2026-07-17	Valid
N21124	Cessna 172M	Fixed-wing, single engine	Individual owner Texas	Standard	2026-07-17	Valid
N26963	Gulfstream American Corp AA-5A	Fixed-wing, single engine	N26963 LLC Montville, New Jersey	Standard	2026-07-17	Valid
N310MF	Omf OMF-100-160	Fixed-wing, single engine	Individual owner Alabama	Standard	2026-07-17	Valid
N3475T	Cessna 177	Fixed-wing, single engine	Individual owner Arizona	Standard	2026-07-17	Valid
N40DZ	Piper PA-12	Fixed-wing, single engine	St. Bernard Aerial LLC Kalispell, Montana	Standard	2026-07-17	Valid
N47767	Piper PA-28-161	Fixed-wing, single engine	Individual owner Texas	Standard	2026-07-17	Valid
N5435E	Cessna 172N	Fixed-wing, single engine	Wings Over Texas Holdings LLC Denton, Texas	Standard	2026-07-17	Valid
N57476	Bellanca 7GCBC	Fixed-wing, single engine	Individual owner Montana	Standard	2026-07-17	Valid
N6525D	Cessna 172N	Fixed-wing, single engine	Aerospace Testing Engineering & Certification INC Seattle, Washington	Standard	2026-07-17	Valid
N9573S	Champion 7GCAA	Fixed-wing, single engine	Individual owner Alaska	Standard	2026-07-17	Valid
N13452	Cessna 172M	Fixed-wing, single engine	Individual owner Arkansas	Standard	2026-07-16	Valid
N2355Q	Beech 23	Fixed-wing, single engine	Individual owner Kentucky	Standard	2026-07-16	Valid
N739ZL	Cessna 172N	Fixed-wing, single engine	Individual owner Hawaii	Standard	2026-07-16	Valid
N777AH	Cessna 172M	Fixed-wing, single engine	Jarhead Aviation LLC Port Saint Lucie, Florida	Standard	2026-07-16	Valid
N799K	American Champion Aircraft 7GCAA	Fixed-wing, single engine	Monarch Aviation LLC Dillon, Montana	Standard	2026-07-16	Valid
N172FT	Cessna 172N	Fixed-wing, single engine	Airlink California LLC Diamond Bar, California	Standard	2026-07-15	Valid
N19781	Cessna 172L	Fixed-wing, single engine	Individual owner Alaska	Standard	2026-07-15	Valid
N20390	Cessna 172M	Fixed-wing, single engine	Mitiguy Aviation LLC Stow, Massachusetts	Standard	2026-07-15	Valid
N3176Z	Piper PA-22-150	Fixed-wing, single engine	Individual owner Florida	Standard	2026-07-15	Valid
N3231T	Cessna 177	Fixed-wing, single engine	Individual owner Texas	Standard	2026-07-15	Valid
N4292Q	Cessna 172L	Fixed-wing, single engine	Sky Walker Flight School LLC Adrian, Michigan	Standard	2026-07-15	Valid
N43335	Piper PA-28-151	Fixed-wing, single engine	Individual owner South Carolina	Standard	2026-07-15	Valid
N509RW	Watson Richard R RV9A	Fixed-wing, single engine	Withheld at owner's request	Experimental	2026-07-15	Valid
N555WR	Wagner Rudolph O RV-6	Fixed-wing, single engine	Central Ridge Consulting INC Beverly Hills, Florida	Experimental	2026-07-15	Valid
N5690U	Piper PA-28-140	Fixed-wing, single engine	Pena Flight Partners LLC Oakland, California	Standard	2026-07-15	Valid
N75635	Cessna 172N	Fixed-wing, single engine	Sarge Aviation LLC Brazoria, Texas	Standard	2026-07-15	Valid
N758R	Burkhart Grob GROB G115C	Fixed-wing, single engine	Bde Aviation Services LLC Chatham, Illinois	Standard	2026-07-15	Valid
N777DU	Cessna 172L	Fixed-wing, single engine	Sc Infinities LLC Dover, Delaware	Standard	2026-07-15	Valid
N79277	Cessna 172K	Fixed-wing, single engine	Individual owner Minnesota	Standard	2026-07-15	Valid
N10DJ	Cessna 172N	Fixed-wing, single engine	Individual owner New Jersey	Standard	2026-07-14	Valid
N32390	Piper PA-28-151	Fixed-wing, single engine	Individual owner Vermont	Standard	2026-07-14	Valid
N3355Z	Kelley Joseph W RV-6	Fixed-wing, single engine	Smp Wind River LLC Thermopolis, Wyoming	Experimental	2026-07-14	Valid
N7408R	Piper PA-28-140	Fixed-wing, single engine	Adventures Aviation LLC Whitehouse Station, New Jersey	Standard	2026-07-14	Valid
N8921R	Champion 7GCA	Fixed-wing, single engine	Potters Aviation LLC Haskell, Oklahoma	Standard	2026-07-14	Valid
N6480D	Cessna 172N	Fixed-wing, single engine	Flyright Aviation LLC North Las Vegas, Nevada	Standard	2026-07-13	Valid
N6537D	Cessna 172N	Fixed-wing, single engine	Individual owner District of Columbia	Standard	2026-07-13	Valid
N13548	Cessna 172M	Fixed-wing, single engine	Havana Flyers Assoc Petersburg, Illinois	Standard	2026-07-12	Valid
N5698U	Piper PA-28-140	Fixed-wing, single engine	Individual owner Idaho	Standard	2026-07-12	Valid
N20323	Cessna 172M	Fixed-wing, single engine	Walla Walla University College Place, Washington	Standard	2026-07-11	Valid
N6141J	Piper PA-28-151	Fixed-wing, single engine	Rnt Air LLC Mitchell, South Dakota	Standard	2026-07-11	Valid
N8327R	Piper PA-28-140	Fixed-wing, single engine	Individual owner Virginia	Standard	2026-07-11	Valid
N1152M	Cessna 172L	Fixed-wing, single engine	Rst Aviation LLC Vero Beach, Florida	Standard	2026-07-10	Valid
N3942Q	Cessna 172L	Fixed-wing, single engine	Individual owner Illinois	Standard	2026-07-10	Valid
N5217H	Cessna 172M	Fixed-wing, single engine	B&R Aircraft LLC Wadsworth, Ohio	Standard	2026-07-10	Valid
N5425W	Piper PA-28-160	Fixed-wing, single engine	Individual owner Illinois	Standard	2026-07-10	Valid
N6736J	Piper PA-28-140	Fixed-wing, single engine	Individual owner Idaho	Standard	2026-07-10	Valid
N982Y	Yard W M/Yard M L VANS RV-4	Fixed-wing, single engine	Individual owner North Carolina	Experimental	2026-07-10	Valid
N98194	Piper PA-28-140	Fixed-wing, single engine	Individual owner Montana	Standard	2026-07-09	Valid
N9838W	Piper PA-28-140	Fixed-wing, single engine	Individual owner North Carolina	Standard	2026-07-09	Valid
N15310	Piper PA-28-140	Fixed-wing, single engine	N15310 LLC Alexandria, Virginia	Standard	2026-07-08	Valid
N1791V	Cessna 172M	Fixed-wing, single engine	Individual owner Ohio	Standard	2026-07-08	Valid
N1847J	Piper PA-28-140	Fixed-wing, single engine	Mehrle Properties LLC Mcclure, Illinois	Standard	2026-07-08	Valid
N19778	Cessna 172L	Fixed-wing, single engine	Individual owner Washington	Standard	2026-07-08	Valid
N19NT	Beech B19	Fixed-wing, single engine	Individual owner Colorado	Standard	2026-07-08	Valid
N3948Q	Cessna 172L	Fixed-wing, single engine	Citabria INC Auburn, California	Standard	2026-07-08	Valid
N44347	Piper PA-28-151	Fixed-wing, single engine		Standard	2026-07-08	Valid
N44DM	Cessna 172M	Fixed-wing, single engine	Gorge Winds Aviation INC Fairview, Oregon	Standard	2026-07-08	Valid
N5771W	Piper PA-28-150	Fixed-wing, single engine	Co-owned owner Texas	Standard	2026-07-08	Valid
N6461C	Piper PA-28-161	Fixed-wing, single engine	Tripacer Strategic Consulting LLC Dover, Delaware	Standard	2026-07-08	Valid
N69SX	Shuck Michael RV-6A	Fixed-wing, single engine	Individual owner Kansas	Experimental	2026-07-08	Valid
N708FM	Massa Frank N ZENAIR 250	Fixed-wing, single engine	Individual owner Kentucky	Experimental	2026-07-08	Valid
N7223Q	Cessna 172L	Fixed-wing, single engine	Buiqui Aerospace CORP Kissimmee, Florida	Standard	2026-07-08	Valid
N8270N	Piper PA-28-140	Fixed-wing, single engine	Cloudsurfer LLC Louisville, Kentucky	Standard	2026-07-08	Valid
N84DW	Grumman American Avn. Corp. AA-5	Fixed-wing, single engine	Buffalo Valley Aviation LLC Neosho, Missouri	Standard	2026-07-08	Valid
N9937Y	Champion 7GCB	Fixed-wing, single engine	Woods Justin S West Glacier, Montana	Standard	2026-07-08	Valid
N172HF	Cessna 172M	Fixed-wing, single engine	Buiqui Aerospace CORP Kissimmee, Florida	Standard	2026-07-07	Valid
N4397R	Cessna 172M	Fixed-wing, single engine	Buiqui Aerospace CORP Kissimmee, Florida	Standard	2026-07-07	Valid
N46201	Cessna 172I	Fixed-wing, single engine	Lakes Area Aviation LLC Little Falls, Minnesota	Standard	2026-07-07	Valid
N6094F	Cessna 172N	Fixed-wing, single engine	Buiqui Aerospace CORP Kissimmee, Florida	Standard	2026-07-07	Valid
N6896H	Cessna 172M	Fixed-wing, single engine	Buiqui Aerospace CORP Kissimmee, Florida	Multiple	2026-07-07	Valid
N68BD	Cessna 172N	Fixed-wing, single engine	Buiqui Aerospace CORP Kissimmee, Florida	Standard	2026-07-07	Valid
N734ND	Cessna 172N	Fixed-wing, single engine	Buiqui Aerospace CORP Kissimmee, Florida	Standard	2026-07-07	Valid
N79036	Cessna 172K	Fixed-wing, single engine	Buiqui Aerospace CORP Kissimmee, Florida	Standard	2026-07-07	Valid
N97681	Cessna 172P	Fixed-wing, single engine	Buiqui Aerospace CORP Kissimmee, Florida	Standard	2026-07-07	Valid
N118JC	Cash James L THORP T-18	Fixed-wing, single engine	Individual owner Texas	Experimental	2026-07-06	Valid
N1631J	Piper PA-28-140	Fixed-wing, single engine	Reds Aircraft LLC Edinburg, Texas	Standard	2026-07-06	Valid
N2014E	Cessna 172N	Fixed-wing, single engine	Wanda Collins Professional Pilot Services LLC Madisonville, Texas	Standard	2026-07-06	Valid
N42AP	Cessna 172N	Fixed-wing, single engine	Montana Aircraft Trust INC Trustee Bozeman, Montana	Standard	2026-07-06	Valid
N4479Z	Piper PA-18-150	Fixed-wing, single engine	Individual owner Alaska	Standard	2026-07-06	Valid
N72884	Cessna 172M	Fixed-wing, single engine	Hawkeye Aviation LLC Miami, Florida	Standard	2026-07-06	Valid
N87WB	Bryan/Warren GLASAIR	Fixed-wing, single engine	Wild Bitch LLC Oklahoma City, Oklahoma	Experimental	2026-07-06	Valid
N8904V	Cessna 172M	Fixed-wing, single engine	Waymaker Aviation LLC Yukon, Oklahoma	Standard	2026-07-06	Valid
N3033Z	Piper PA-22-160	Fixed-wing, single engine	Co-owned owner Texas	Standard	2026-07-03	Valid
N31LD	Cessna 172M	Fixed-wing, single engine	Co-owned owner Florida	Standard	2026-07-03	Valid
N2114X	Cessna 172L	Fixed-wing, single engine	Gsi CORP Eastham, Massachusetts	Standard	2026-07-02	Valid
N26297	Grumman American Avn. Corp. AA-5A	Fixed-wing, single engine	Individual owner Mississippi	Standard	2026-07-02	Valid
N5164W	Piper PA-28-160	Fixed-wing, single engine	Morning Aviation LLC Altoona, Pennsylvania	Standard	2026-07-02	Valid
N2287P	Piper PA-23	Fixed-wing, multi-engine	250 Flyers LLC Middletown, Delaware	Standard	2026-07-01	Valid
N2317L	Beech 23	Fixed-wing, single engine	Individual owner New Jersey	Standard	2026-07-01	Valid

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.