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
N243X	Borden Charles R THORP T-18	Fixed-wing, single engine	Individual owner Kentucky	Experimental	2026-07-01	Valid
N271MA	American Champion Aircraft 7GCAA	Fixed-wing, single engine	Earthbound Aviation Group LLC Wilmington, Delaware	Standard	2026-07-01	Valid
N4377P	Piper PA-28-161	Fixed-wing, single engine	Individual owner California	Standard	2026-07-01	Valid
N46355	Cessna 172K	Fixed-wing, single engine	White Wings Air INC Jacksonville, Florida	Standard	2026-07-01	Valid
N50523	Cessna 172M	Fixed-wing, single engine	Individual owner Alaska	Standard	2026-07-01	Valid
N5613U	Piper PA-28-140	Fixed-wing, single engine	Aviation Trust Company LLC Trustee Oklahoma City, Oklahoma	Standard	2026-07-01	Valid
N5719W	Piper PA-28-150	Fixed-wing, single engine	Riggin Flight Service INC Madison, South Dakota	Standard	2026-07-01	Valid
N7296G	Cessna 172K	Fixed-wing, single engine	Wind Walker LLC Tucson, Arizona	Standard	2026-07-01	Valid
N733CP	Cessna 172N	Fixed-wing, single engine	Westerly Air LLC Westerly, Rhode Island	Standard	2026-07-01	Valid
N7724G	Cessna 172L	Fixed-wing, single engine	Wind Walker LLC Tucson, Arizona	Standard	2026-07-01	Valid
N87GG	Greenleaf George H GLASAIR FT	Fixed-wing, single engine	Vaughn Aviation LLC Brandon, Mississippi	Experimental	2026-07-01	Valid
N9292Z	Piper PA-18-150	Fixed-wing, single engine	Individual owner Alaska	Standard	2026-07-01	Valid
N9301E	Cessna 172N	Fixed-wing, single engine	Ryan Aircraft Holding LLC Orlando, Florida	Standard	2026-07-01	Valid
N99YT	American AA-5	Fixed-wing, single engine	Wind Walker LLC Tucson, Arizona	Standard	2026-07-01	Valid
N12682	Cessna 172M	Fixed-wing, single engine	Co-owned owner Florida	Standard	2026-06-30	Valid
N172AD	Cessna 172K	Fixed-wing, single engine	Co-owned owner Minnesota	Standard	2026-06-30	Valid
N2241K	Piper PA-28-161	Fixed-wing, single engine	Individual owner Pennsylvania	Standard	2026-06-30	Valid
N31285	Bellanca 7GCBC	Fixed-wing, single engine	Individual owner Alaska	Standard	2026-06-30	Valid
N3335B	Piper PA-22-135	Fixed-wing, single engine	Individual owner Ohio	Standard	2026-06-30	Valid
N3648K	Piper PA-28-140	Fixed-wing, single engine	Co-owned owner New York	Standard	2026-06-29	Valid
N57659	Bellanca 7GCBC	Fixed-wing, single engine	Progressive Air INC Janesville, Wisconsin	Standard	2026-06-29	Valid
N64340	Cessna 172M	Fixed-wing, single engine	Spartan Aviation Services LLC Parkland, Florida	Standard	2026-06-29	Valid
N15517	Piper PA-28-140	Fixed-wing, single engine	Individual owner Texas	Standard	2026-06-28	Valid
N2427M	Piper PA-28-161	Fixed-wing, single engine	18 Rwy LLC Falmouth, Maine	Standard	2026-06-28	Valid
N55816	Piper PA-28-140	Fixed-wing, single engine	Individual owner Delaware	Standard	2026-06-28	Valid
N6868K	Piper PA-28-140	Fixed-wing, single engine	Flamingo Air INC Cincinnati, Ohio	Standard	2026-06-28	Valid
N78295	Cessna 172K	Fixed-wing, single engine	Individual owner Massachusetts	Standard	2026-06-28	Valid
N8509D	Piper PA-22-160	Fixed-wing, single engine	Individual owner Alaska	Standard	2026-06-28	Valid
N32043	Piper PA-28-151	Fixed-wing, single engine	Brolan Aviation LLC Kansas City, Missouri	Standard	2026-06-27	Valid
N4077Z	Piper PA-18-150	Fixed-wing, single engine	En212Ak LLC Anchorage, Alaska	Standard	2026-06-27	Valid
N44537	Piper PA-28-151	Fixed-wing, single engine	Individual owner Massachusetts	Standard	2026-06-27	Valid
N483E	Cessna 172N	Fixed-wing, single engine	Aviation Trust CO LLC Trustee Oklahoma City, Oklahoma	Standard	2026-06-27	Valid
N5785W	Piper PA-28-150	Fixed-wing, single engine	Lilu LLC Siloam Springs, Arkansas	Standard	2026-06-27	Valid
N721AA	Cessna 172K	Fixed-wing, single engine	Individual owner New Jersey	Standard	2026-06-27	Valid
N9645H	Cessna 172M	Fixed-wing, single engine	Individual owner Puerto Rico	Standard	2026-06-27	Valid
N972DP	Cessna 172K	Fixed-wing, single engine	Crosswind Aviation of Oklahoma LLC Stillwater, Oklahoma	Standard	2026-06-27	Valid
N1167P	Piper PA-23	Fixed-wing, multi-engine	Cascadia Air Ventures INC Winlock, Washington	Standard	2026-06-26	Valid
N13323	Cessna 172M	Fixed-wing, single engine	Ck Leasing Services LLC Wilmington, Delaware	Standard	2026-06-26	Valid
N2291P	Piper PA-23	Fixed-wing, multi-engine	Nice Flight LLC Medford, Oregon	Standard	2026-06-26	Valid
N36358	Piper PA-28-161	Fixed-wing, single engine	Hans Aviation INC Davie, Florida	Standard	2026-06-26	Valid
N5203D	Cessna 172N	Fixed-wing, single engine	Acumen Aerotech LLC Rogers, Texas	Standard	2026-06-26	Valid
N6621W	Piper PA-28-140	Fixed-wing, single engine	Gbg Aviation LLC Foristell, Missouri	Standard	2026-06-26	Valid
N733JT	Cessna 172N	Fixed-wing, single engine	Cl Habitat Management LLC Salisbury, Maryland	Standard	2026-06-26	Valid
N734AY	Cessna 172N	Fixed-wing, single engine	Rico Aviation Services INC Miami, Florida	Standard	2026-06-26	Valid
N86605	Bellanca 7GCAA	Fixed-wing, single engine	Individual owner Ohio	Standard	2026-06-26	Valid
N136VP	Piper PA-28-140	Fixed-wing, single engine	Co-owned owner New Mexico	Standard	2026-06-25	Valid
N2867U	Piper PA-28-161	Fixed-wing, single engine	Withheld at owner's request	Standard	2026-06-25	Valid
N4871B	Piper PA-18A 150	Fixed-wing, single engine	Co-owned owner Washington	Standard	2026-06-25	Valid
N140BC	Piper PA-28-140	Fixed-wing, single engine	N504Fl LLC Killeen, Texas	Standard	2026-06-24	Valid
N1558E	Cessna 172N	Fixed-wing, single engine	Individual owner Missouri	Standard	2026-06-24	Valid
N1906V	Cessna 172M	Fixed-wing, single engine	N46132 LLC Kalispell, Montana	Standard	2026-06-24	Valid
N2397T	Piper PA-28-140	Fixed-wing, single engine	Sound Approach Aviation LLC Seattle, Washington	Standard	2026-06-24	Valid
N23AF	Piper PA-28-151	Fixed-wing, single engine	Guilded Gull Aviation LLC Middletown, Rhode Island	Standard	2026-06-24	Valid
N26961	Gulfstream American Corp AA-5A	Fixed-wing, single engine	Individual owner Tennessee	Standard	2026-06-24	Valid
N4646V	Varga Aircraft Corp. 2150A	Fixed-wing, single engine	Individual owner Pennsylvania	Standard	2026-06-24	Valid
N4787A	Piper PA-22-150	Fixed-wing, single engine	Individual owner New York	Standard	2026-06-24	Valid
N5032M	Beech B19	Fixed-wing, single engine	Let There Be Flight LLC Portage, Michigan	Standard	2026-06-24	Valid
N5617W	Piper PA-28-160	Fixed-wing, single engine	Individual owner Wisconsin	Standard	2026-06-24	Valid
N57656	Bellanca 7GCBC	Fixed-wing, single engine	Individual owner Indiana	Standard	2026-06-24	Valid
N79567	Cessna 172K	Fixed-wing, single engine	Miller Aviation Group LLC Coon Rapids, Minnesota	Standard	2026-06-24	Valid
N79587	Cessna 172K	Fixed-wing, single engine	Twj Aviation 2 LLC Jacksonville, Florida	Standard	2026-06-24	Valid
N12790	Cessna 172M	Fixed-wing, single engine	Cdb Group Holdings LLC Sheridan, Wyoming	Standard	2026-06-23	Valid
N3938K	Piper PA-28-140	Fixed-wing, single engine	Cdb Group Holdings LLC Sheridan, Wyoming	Standard	2026-06-23	Valid
N43CJ	Piper PA-22-160	Fixed-wing, single engine	Individual owner Colorado	Standard	2026-06-23	Valid
N9523L	Grumman American Avn. Corp. AA-5	Fixed-wing, single engine	Cnaa LLC Mooresville, North Carolina	Standard	2026-06-23	Valid
N9664P	Piper PA-18-150	Fixed-wing, single engine	Individual owner Alaska	Restricted	2026-06-23	Valid
N2202Z	Piper PA-28-161	Fixed-wing, single engine	Co-owned owner Kansas	Standard	2026-06-22	Valid
N2830Q	Cessna 172L	Fixed-wing, single engine	Retro Modern Aviation LLC Manitou Springs, Colorado	Standard	2026-06-22	Valid
N6273W	Piper PA-28-140	Fixed-wing, single engine	Individual owner Pennsylvania	Standard	2026-06-22	Valid
N7548G	Cessna 172L	Fixed-wing, single engine	Retro Modern Aviation LLC Manitou Springs, Colorado	Standard	2026-06-22	Valid
N9734W	Piper PA-28-140	Fixed-wing, single engine	Nimbus Air LLC Frankfort, Illinois	Standard	2026-06-22	Valid
N64119	Cessna 172M	Fixed-wing, single engine	Augustus Aircraft LLC Whitefish, Montana	Standard	2026-06-21	Valid
N671RS	Savage John E RV-4	Fixed-wing, single engine	Individual owner Maryland	Experimental	2026-06-21	Valid
N269WM	Piper PA-18-150	Fixed-wing, single engine	Renninger Log Homes Meeker, Colorado	Restricted	2026-06-20	Valid
N29673	Cessna 177	Fixed-wing, single engine	Individual owner Texas	Standard	2026-06-20	Valid
N319H	Haywood Larry RV8	Fixed-wing, single engine	Northbound Leasing and Sales LLC Anchorage, Alaska	Experimental	2026-06-20	Valid
N734AE	Cessna 172N	Fixed-wing, single engine	Flight Club 502 INC Louisville, Kentucky	Standard	2026-06-20	Valid
N13911	Piper PA-18-150	Fixed-wing, single engine	Northern Aeroworks LLC Eagle River, Alaska	Standard	2026-06-19	Valid
N2234P	Bellanca 7GCBC	Fixed-wing, single engine	Individual owner Kentucky	Standard	2026-06-19	Valid
N5324T	Piper PA-28-140	Fixed-wing, single engine	Co-owned owner Texas	Standard	2026-06-19	Valid
N6168X	Clement James WITTMAN TAILWIND W10	Fixed-wing, single engine	Individual owner Tennessee	Experimental	2026-06-19	Valid
N924KA	Piper PA-28-140	Fixed-wing, single engine	Individual owner Florida	Standard	2026-06-19	Valid
N1043S	Cessna 172N	Fixed-wing, single engine	American Aviator LLC Newark, Delaware	Standard	2026-06-18	Valid
N4506R	Piper PA-28-140	Fixed-wing, single engine	Individual owner Georgia	Standard	2026-06-18	Valid
N63DA	American Champion Aircraft 7GCBC	Fixed-wing, single engine	Bass Lake Aviation LLC Webster, Wisconsin	Standard	2026-06-18	Valid
N734FZ	Cessna 172N	Fixed-wing, single engine	Ardent Air LLC Byhalia, Mississippi	Standard	2026-06-18	Valid
N82016	Piper PA-18-150	Fixed-wing, single engine	Individual owner Texas	Standard	2026-06-18	Valid
N9594U	Grumman American Avn. Corp. AA-5A	Fixed-wing, single engine	Co-owned owner Pennsylvania	Standard	2026-06-18	Valid
N33FU	Weimer Earl E RV-3	Fixed-wing, single engine	Individual owner Idaho	Experimental	2026-06-17	Valid
N5152R	Cessna 172M	Fixed-wing, single engine	Aero Marine LLC Denver, North Carolina	Standard	2026-06-17	Valid
N6735L	Piper PA-18-150	Fixed-wing, single engine	Paynes Landing LLC Inlet, New York	Standard	2026-06-17	Valid
N8363E	Piper PA-28-161	Fixed-wing, single engine	Ellefson Aircraft LLC Tyler, Minnesota	Standard	2026-06-17	Valid
N1924H	Piper PA-28-140	Fixed-wing, single engine	Skyjiro Forge CORP Arcadia, California	Standard	2026-06-16	Valid
N7169B	Piper PA-18-150	Fixed-wing, single engine	Northern Peaks Flight Training LLC Wasilla, Alaska	Multiple	2026-06-16	Valid
N336RV	Thorall Daniel E VANS RV6	Fixed-wing, single engine	Individual owner Illinois	Experimental	2026-06-15	Valid
N6052G	Piper J3C-65	Fixed-wing, single engine	Individual owner Alaska	Restricted	2026-06-15	Valid
N727TL	Cessna 172N	Fixed-wing, single engine	Individual owner Florida	Standard	2026-06-15	Valid
N72CC	Cessna 172M	Fixed-wing, single engine	Flight Support & Logistics LLC Pembroke Pines, Florida	Standard	2026-06-15	Valid
N8455R	Piper PA-28-140	Fixed-wing, single engine	Horizon Flyers LLC Kingsford, Michigan	Standard	2026-06-15	Valid
N1945P	Piper PA-22	Fixed-wing, single engine	Scotia Aero LLC Fort Myers, Florida	Standard	2026-06-14	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.