The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 9, 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
N872RV Gardner Albert
RV-9A
Fixed-wing, single engine Co-owned owner
Mississippi
Experimental 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N9128D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N92RC Clague Robert E
PITTS S-1C-E
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N9760D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Utah
Standard 2023-03-08 ValidFAA registration status code V: Valid registration. All codes
N13590 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N1372E Cessna
172N
Fixed-wing, single engine Csa Aircraft Leasing LLC
Park City, Utah
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N258AL Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alabama
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N4094P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Virginia
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N4396J Piper
PA-28-140
Fixed-wing, single engine Sunshine Flight Services LLC
Dayton, Tennessee
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N51WT Cessna
172K
Fixed-wing, single engine 51 Whiskey Tango LLC
Henrico, Virginia
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N5296R Cessna
172M
Fixed-wing, single engine B&R Aircraft LLC
Wadsworth, Ohio
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N55151 Piper
PA-28-151
Fixed-wing, single engine Learn 2 Fly LLC
Cantonment, Florida
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N56976 Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N7280D Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N733AD Cessna
172N
Fixed-wing, single engine Marshe Aviation LLC
Upland, California
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N733NR Cessna
172N
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N73895 Cessna
172N
Fixed-wing, single engine Osprey Holding CO LLC
Foley, Alabama
Multiple 2023-03-07 ValidFAA registration status code V: Valid registration. All codes
N12983 Cessna
172M
Fixed-wing, single engine Haman Aviation Services LLC
Nokomis, Florida
Standard 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N4556A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N4869A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N525S Beauchesne J Alfred
GLASAIR I FT
Fixed-wing, single engine Co-owned owner
Arizona
Experimental 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N5474S Piper
PA-28-140
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N7764D Piper
PA-18A
Fixed-wing, single engine Individual owner
Nevada
Multiple 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N84688 Cessna
172K
Fixed-wing, single engine Quad Cities Aero LLC
Bettendorf, Iowa
Standard 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N9630V Cessna
172M
Fixed-wing, single engine N275508 LLC
Margate, Florida
Standard 2023-03-06 ValidFAA registration status code V: Valid registration. All codes
N40060 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-03-05 ValidFAA registration status code V: Valid registration. All codes
N1992W Beech
B19
Fixed-wing, single engine Individual owner
Arkansas
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N3002Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N3059G Champion
7GCBC
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N4494J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N51295 Cessna
172P
Fixed-wing, single engine Right Brother Aviation LLC
Chaffee, New York
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N528BF Piper
PA-28-140
Fixed-wing, single engine Boldflight LLC
Danville, Indiana
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N6432Z Piper
PA-25
Fixed-wing, single engine Individual owner
Kansas
Restricted 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N666FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N669SM May Michael J
VANS RV-6
Fixed-wing, single engine Clearance Clarence Aviation LLC
Hallsville, Texas
Experimental 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N7399J Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N7643F Piper
PA-28-151
Fixed-wing, single engine Maple43F LLC
Hubbardston, Massachusetts
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N8ZX American Champion Aircraft
7GCBC
Fixed-wing, single engine Kansas Farm and Ranch INC
Seneca, Kansas
Standard 2023-03-04 ValidFAA registration status code V: Valid registration. All codes
N150AY P Z L Koliber
150A
Fixed-wing, single engine Legacy Aviation Foundation INC
Staten Island, New York
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N19913 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N20207 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N2887X Cessna
177
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N28RV Foster Robert S
RV6-A
Fixed-wing, single engine Individual owner
Virginia
Experimental 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N31630 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N32540 Piper
PA-28-140
Fixed-wing, single engine Talon Aviation of Nc LLC
Winston Salem, North Carolina
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N6090L American
AA-5
Fixed-wing, single engine Darcor INC
Hampstead, North Carolina
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N64092 Cessna
172M
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N7151J Cessna
172N
Fixed-wing, single engine Lenticularis LLC
Madison, Wisconsin
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N7299F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N7581R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N8452R Piper
PA-28-161
Fixed-wing, single engine Herbert Aviation LLC
Saginaw, Michigan
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N8725M Beech
23
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N925ER Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-03 ValidFAA registration status code V: Valid registration. All codes
N13682 Cessna
172M
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2023-03-02 ValidFAA registration status code V: Valid registration. All codes
N234ZG Cessna
172N
Fixed-wing, single engine Atlas Aviation LLC
Buckhannon, West Virginia
Standard 2023-03-02 ValidFAA registration status code V: Valid registration. All codes
N524ME Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-02 ValidFAA registration status code V: Valid registration. All codes
N5393S Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2023-03-02 ValidFAA registration status code V: Valid registration. All codes
N72421 Cessna
172K
Fixed-wing, single engine N83882 INC
Huntington, New York
Standard 2023-03-02 ValidFAA registration status code V: Valid registration. All codes
N7721D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-03-02 ValidFAA registration status code V: Valid registration. All codes
N9642W Piper
PA-28-140
Fixed-wing, single engine N9642W Leasing LLC
Corunna, Michigan
Standard 2023-03-02 ValidFAA registration status code V: Valid registration. All codes
N12493 Cessna
172M
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N2382L Beech
23
Fixed-wing, single engine Individual owner
Iowa
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N248ER Cessna
172N
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N3144T Cessna
177
Fixed-wing, single engine Individual owner
California
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N4407J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N44786 Piper
PA-28-151
Fixed-wing, single engine Flight Academy LLC
Van Nuys, California
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N4640R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N6747W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N6764J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N70220 Cessna
172M
Fixed-wing, single engine Perun Av LLC
Cliffside Park, New Jersey
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N8421J Varga Aircraft Corp.
2150A
Fixed-wing, single engine
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N8741N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2023-03-01 ValidFAA registration status code V: Valid registration. All codes
N3615Q Beech
A23-19
Fixed-wing, single engine Plane Safe Aircraft Maintenance INC
Waukesha, Wisconsin
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N3966Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N410L Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Montana
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N4441J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N6922W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N7012D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Colorado
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N73213 Cessna
172M
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N7678G Cessna
172L
Fixed-wing, single engine Tanner Michael J
Hooksett, New Hampshire
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N7806D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kansas
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N84256 Cessna
172K
Fixed-wing, single engine Withheld at owner's request
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N9461P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N9944C Luscombe
8F
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-02-28 ValidFAA registration status code V: Valid registration. All codes
N1938A Piper
PA-18-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-02-27 ValidFAA registration status code V: Valid registration. All codes
N4621D Cessna
172N
Fixed-wing, single engine W Tech Consulting INC
Wilmington, Delaware
Standard 2023-02-27 ValidFAA registration status code V: Valid registration. All codes
N5154W Piper
PA-28
Fixed-wing, single engine Freedom 5.1 Aviation LLC
Destrehan, Louisiana
Standard 2023-02-27 ValidFAA registration status code V: Valid registration. All codes
N5892U Piper
PA-28-140
Fixed-wing, single engine Feighl Engineering Group INC
Hot Springs, Arkansas
Standard 2023-02-27 ValidFAA registration status code V: Valid registration. All codes
N6832W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2023-02-27 ValidFAA registration status code V: Valid registration. All codes
N723LH Sharp Gary A
GLASAIR SH-2
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2023-02-27 ValidFAA registration status code V: Valid registration. All codes
N737ME Cessna
172N
Fixed-wing, single engine Lake Elmo Aero LLC
Lake Elmo, Minnesota
Standard 2023-02-27 ValidFAA registration status code V: Valid registration. All codes
N7499R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Louisiana
Standard 2023-02-27 ValidFAA registration status code V: Valid registration. All codes
N7623W Piper
PA-28-180
Fixed-wing, single engine Midwest Heavy Construction LLC
Pleasant Hill, Missouri
Standard 2023-02-27 ValidFAA registration status code V: Valid registration. All codes
N9878U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Rock N Roll Flying Club LLC
Omaha, Nebraska
Standard 2023-02-27 ValidFAA registration status code V: Valid registration. All codes
N84678 Cessna
172K
Fixed-wing, single engine Elizabethtown Flying Service INC
Elizabethtown, Kentucky
Standard 2023-02-26 ValidFAA registration status code V: Valid registration. All codes
N1345T Mauldin Richard
THORPE T-18
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-02-25 ValidFAA registration status code V: Valid registration. All codes
N2376J Beech
23
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-02-25 ValidFAA registration status code V: Valid registration. All codes
N2973X Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2023-02-25 ValidFAA registration status code V: Valid registration. All codes
N3804K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-02-25 ValidFAA registration status code V: Valid registration. All codes
N5214X Champion
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-02-25 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 9, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.