The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 2026

Lycoming O-320 series

27,315 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 (9,462 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.

When the aircraft were built by decade

By decade built, as a table
aircraft
19305
1940234
19502,383
19605,444
197011,405
19801,935
19901,132
2000831
201099
202055

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

The design is held under 1 type certificate (E-274, held by Lycoming Engines). The FAA has issued 29 airworthiness directives (orders that owners must comply with) that name 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.

FAA orders 29 airworthiness directives · newest first

2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2022-08-152022-16-03 · Engine (RECIPROCATING) · engine
2012-03-272012-03-07 · Carburetor · engine
2008-10-202008-19-05 · Parallel Valve'' reciprocating engines · engine
2006-01-312005-26-10 · ECi cylinder assemblies. · engine

All orders naming the Lycoming O-320 series

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

010203141950106111621426
Failure reports by year, as a table
reports
952
961
972
986
007
0139
0224
0339
0430
0541
0623
0732
0818
0915
1013
117
1210
134
146
152
169
171
186
191
203
211
232
251
264

Parts most often reported as the reports name them

Spar18Tube17Cylinder15Bulkhead9Alternator8Control Cable8Bolt7Carburetor7Fitting6Float6
Parts most reported, as a table
reports
Spar18
Tube17
Cylinder15
Bulkhead9
Alternator8
Control Cable8
Bolt7
Carburetor7
Fitting6
Float6

Latest reports

2026-09-03Gascolator: dirty
2026-05-19Impulse Coupling: unserviceable
2026-03-10Cylinder Head: cracked
2026-03-05Cylinder: cracked
2025-11-24Cylinder: cracked

Certificates and bulletins

E-274Type certificate held by Lycoming Engines · 60 models listed · revised April 30, 2013

Safety bulletins 17 · advice, not orders

2022-09-26NE-06-31R6 · Engine Lubricating Oils
2019-05-02NE-19-08 · Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders
2016-05-13NE-08-32R1 · Propeller Governor Idler Gear Shaft Set Screw
2014-03-24NE-14-13 · Reciprocating Engine - Cylinder Mounting Studs
2012-11-21NE-13-06 · Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320,...

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/lycoming-o-320-series.json.

Aircraft newest certificates first · 27,315

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N84082 Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2023-05-13 ValidFAA registration status code V: Valid registration. All codes
N9842W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-05-13 ValidFAA registration status code V: Valid registration. All codes
N1297F Cessna
172N
Fixed-wing, single engine Jprg Aviation INC
Orlando, Florida
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N13754 Cessna
172M
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N1729Y Cessna
172N
Fixed-wing, single engine Flying Colors Airparts INC
Leesburg, Florida
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N25SK Cessna
172N
Fixed-wing, single engine H & H Aviation Enteprises LLC
Fairfield, Ohio
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N32488 Piper
PA-28-151
Fixed-wing, single engine
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N43460 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Maryland
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N696LB Piper
PA-28-140
Fixed-wing, single engine N&C Aviation LLC
Niles, Michigan
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N7240F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N8602D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N9160H Cessna
172M
Fixed-wing, single engine Todd Media INC
Tuscaloosa, Alabama
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N916Y Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-05-12 ValidFAA registration status code V: Valid registration. All codes
N1131P Piper
PA-23
Fixed-wing, multi-engine Co-owned owner
Alaska
Standard 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N124SN Nelson Steven Paul
WAG-AEROSPORTSMAN2+2
Fixed-wing, single engine Wasatch Consulting LLC
Chandler, Arizona
Experimental 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N1476T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N188SD David G Deray
RV-6
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N1911P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N2966Z Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N737RN Cessna
172N
Fixed-wing, single engine Fife Aire LLC
Newnan, Georgia
Standard 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N739KR Cessna
172N
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N9810U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-05-11 ValidFAA registration status code V: Valid registration. All codes
N20074 Cessna
172M
Fixed-wing, single engine Kyzer Aviation Holdings LLC
Fort Mill, South Carolina
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N2143Y Piper
PA-28-161
Fixed-wing, single engine Bk Aviation Services LLC
Graford, Texas
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N2195P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Arizona
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N2592S Piper
PA-18-150
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N33762 Piper
PA-28-140
Fixed-wing, single engine Wits-Sims LLC
Canal Winchester, Ohio
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N3597K Piper
PA-28-140
Fixed-wing, single engine Quinn Knives LLC
Julian, California
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N3849Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N46078 Cessna
172I
Fixed-wing, single engine Parrish Aviation Flight Academy LLC
Southlake, Texas
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N517GS Laessle Frank W
VANS RV-4
Fixed-wing, single engine Ptag Flight Service LLC
Vidalia, Georgia
Experimental 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N7198Q Cessna
172L
Fixed-wing, single engine Bay Lux Ventures LLC
Tampa, Florida
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N7201J Piper
PA-28-140
Fixed-wing, single engine Trebor Aviation LLC
Prescott Valley, Arizona
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N738NG Cessna
172N
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N80824 Universal
GLOBE GC-1A
Fixed-wing, single engine Streamline Aviation LLC
Battlefield, Missouri
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N8091D Piper
PA-18A
Fixed-wing, single engine Individual owner
Alaska
Multiple 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N8354J Varga Aircraft Corp.
2150A
Fixed-wing, single engine Old Buzzard Aviation INC
Middleburg, Florida
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N9010D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N950DR Cessna
172N
Fixed-wing, single engine Rjc Skyhawk LLC
Middletown, Delaware
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N9521H Cessna
172M
Fixed-wing, single engine Jordan Recreation Development LLC
Clinton, Tennessee
Standard 2023-05-10 ValidFAA registration status code V: Valid registration. All codes
N19603 Cessna
172L
Fixed-wing, single engine Stanly Business Consultants LLC
Albemarle, North Carolina
Standard 2023-05-09 ValidFAA registration status code V: Valid registration. All codes
N3005T Piper
PA-28-161
Fixed-wing, single engine Individual owner
New York
Standard 2023-05-09 ValidFAA registration status code V: Valid registration. All codes
N33480 Piper
PA-28-151
Fixed-wing, single engine Cerva Air LLC
New Albany, Indiana
Standard 2023-05-09 ValidFAA registration status code V: Valid registration. All codes
N3589P Piper
PA-18A 150
Fixed-wing, single engine Newsom Bearden and Cobb INC DBA
Lubbock, Texas
Multiple 2023-05-09 ValidFAA registration status code V: Valid registration. All codes
N8758M Beech
23
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2023-05-09 ValidFAA registration status code V: Valid registration. All codes
N8919V Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-05-09 ValidFAA registration status code V: Valid registration. All codes
N98134 Piper
PA-28-140
Fixed-wing, single engine Stanly Business Consultants LLC
Albermarle, North Carolina
Standard 2023-05-09 ValidFAA registration status code V: Valid registration. All codes
N1923F Cessna
172N
Fixed-wing, single engine Atlanta Air Academy LLC
Kennesaw, Georgia
Restricted 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N2883X Cessna
177
Fixed-wing, single engine Individual owner
California
Standard 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N28CS Seager Clyde W
RV-4
Fixed-wing, single engine Emerald Aero LLC
Pace, Florida
Experimental 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N501PL Hildebrand Lester G
GLASTAR
Fixed-wing, single engine Individual owner
Illinois
Experimental 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N5060G Bellanca
7GCBC
Fixed-wing, single engine Spragues Aerial Spraying INC
Courtenay, North Dakota
Standard 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N5136G Cessna
172K
Fixed-wing, single engine York Aviators LLC
York, Pennsylvania
Standard 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N557JB Bussell Jan Stanten
RV6A
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N5951E Cessna
172N
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N6963J Piper
PA-28-151
Fixed-wing, single engine Fly By Knight INC
Hammond, Louisiana
Standard 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N8182N Piper
PA-28-140
Fixed-wing, single engine Jlf Air INC
Evansville, Indiana
Standard 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N8198V Piper
PA-28-161
Fixed-wing, single engine Region Flyers LLC
Valparaiso, Indiana
Standard 2023-05-08 ValidFAA registration status code V: Valid registration. All codes
N8250N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-05-07 ValidFAA registration status code V: Valid registration. All codes
N1650J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-05-06 ValidFAA registration status code V: Valid registration. All codes
N241LW Aerostar Acft Corp Of Texas
M20C
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2023-05-06 ValidFAA registration status code V: Valid registration. All codes
N36052 Piper
PA-28-161
Fixed-wing, single engine Icarus Flying Academy LLC
Farmingdale, New York
Standard 2023-05-06 ValidFAA registration status code V: Valid registration. All codes
N5074W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2023-05-06 ValidFAA registration status code V: Valid registration. All codes
N6453W Piper
PA-28-140
Fixed-wing, single engine N6453W LLC
Orlando, Florida
Standard 2023-05-06 ValidFAA registration status code V: Valid registration. All codes
N698FL Piper
PA-28-140
Fixed-wing, single engine Night Fox Aircraft LLC
Mesa, Arizona
Standard 2023-05-06 ValidFAA registration status code V: Valid registration. All codes
N71LZ Piper
PA-28-161
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-05-06 ValidFAA registration status code V: Valid registration. All codes
N80585 Cessna
172M
Fixed-wing, single engine Ck Leasing Services LLC
Wilmington, Delaware
Standard 2023-05-06 ValidFAA registration status code V: Valid registration. All codes
N12713 Cessna
172M
Fixed-wing, single engine Mt Aircraft LLC
Port Orange, Florida
Standard 2023-05-05 ValidFAA registration status code V: Valid registration. All codes
N13301 Cessna
172M
Fixed-wing, single engine Iowa Lakes Community College
Estherville, Iowa
Standard 2023-05-05 ValidFAA registration status code V: Valid registration. All codes
N224CB Covert C/Blastick H
VANS ACFT RV-6A
Fixed-wing, single engine Individual owner
Illinois
Experimental 2023-05-05 ValidFAA registration status code V: Valid registration. All codes
N35617 Cessna
172I
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-05-05 ValidFAA registration status code V: Valid registration. All codes
N66015 Cessna
172P
Fixed-wing, single engine Rock Solid Aviation LLC
Lake Charles, Louisiana
Restricted 2023-05-05 ValidFAA registration status code V: Valid registration. All codes
N7789P Piper
PA-18-150
Fixed-wing, single engine S R Smith Ranch
Utopia, Texas
Standard 2023-05-05 ValidFAA registration status code V: Valid registration. All codes
N887CC Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Mr Dent INC
Manheim, Pennsylvania
Standard 2023-05-05 ValidFAA registration status code V: Valid registration. All codes
N42CM Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-05-04 ValidFAA registration status code V: Valid registration. All codes
N5137R Cessna
172M
Fixed-wing, single engine Co-owned owner
Connecticut
Standard 2023-05-04 ValidFAA registration status code V: Valid registration. All codes
N5168W Piper
PA-28
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-05-04 ValidFAA registration status code V: Valid registration. All codes
N6921B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-05-04 ValidFAA registration status code V: Valid registration. All codes
N89BE Englert Robert C
LONG EZ
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-05-04 ValidFAA registration status code V: Valid registration. All codes
N989TM Piper
PA-28-140
Fixed-wing, single engine Prestige Wordwide Km LLC
Lynn Haven, Florida
Standard 2023-05-04 ValidFAA registration status code V: Valid registration. All codes
N13394 Cessna
172M
Fixed-wing, single engine Ck Leasing Services LLC
Wilmington, Delaware
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N1546V Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N2316Y Cessna
177
Fixed-wing, single engine Individual owner
West Virginia
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N2399P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N35554 Cessna
172I
Fixed-wing, single engine J&T Aviation LLC
Colleyville, Texas
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N4324H Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Washington
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N542F Roy A Farris
THORP T-18
Fixed-wing, single engine Co-owned owner
Minnesota
Experimental 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N57WS Piper
PA-18A 150
Fixed-wing, single engine 4031 Aviation INC
Bemidji, Minnesota
Multiple 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N5937G Cessna
150K
Fixed-wing, single engine Individual owner
Wyoming
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N601PA Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N7059D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N7127R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N84473 Cessna
172K
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-05-03 ValidFAA registration status code V: Valid registration. All codes
N2791P Piper
PA-18A
Fixed-wing, single engine Mccarthy Air LLC
Palmer, Alaska
Standard 2023-05-02 ValidFAA registration status code V: Valid registration. All codes
N5998Z Piper
PA-18-150
Fixed-wing, single engine E & e Jones Farms LLC
Munford, Alabama
Multiple 2023-05-02 ValidFAA registration status code V: Valid registration. All codes
N6164F Cessna
172N
Fixed-wing, single engine Blue River Aviation LLC
Palmer, Alaska
Standard 2023-05-02 ValidFAA registration status code V: Valid registration. All codes
N62CS Sloan Chip
AVID MAGNUM
Fixed-wing, single engine Individual owner
Oregon
Experimental 2023-05-02 ValidFAA registration status code V: Valid registration. All codes
N7398J Piper
PA-28-140
Fixed-wing, single engine Great Lakes Aviation Services LLC
Kimball, Michigan
Standard 2023-05-02 ValidFAA registration status code V: Valid registration. All codes
N8926D Piper
PA-22-160
Fixed-wing, single engine Planes & Things INC
Collinsville, Oklahoma
Standard 2023-05-02 ValidFAA registration status code V: Valid registration. All codes
N92445 Cessna
172M
Fixed-wing, single engine Pureflight Aviation Training LLC
Newberg, Oregon
Standard 2023-05-02 ValidFAA registration status code V: Valid registration. All codes

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.