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
N1716T Piper
PA-28-140
Fixed-wing, single engine Stratus Business Development LLC
Nashua, New Hampshire
Standard 2022-02-05 ValidFAA registration status code V: Valid registration. All codes
N229VK Thomas C Kuklo
OB RANS S-21
Fixed-wing, single engine Co-owned owner
Montana
Experimental 2022-02-05 ValidFAA registration status code V: Valid registration. All codes
N4179Z Piper
PA-18-150
Fixed-wing, single engine Tnt Farms
Marana, Arizona
Standard 2022-02-05 ValidFAA registration status code V: Valid registration. All codes
N54203 Cessna
172P
Fixed-wing, single engine Atlanta Aviation Academy INC
Lawrenceville, Georgia
Standard 2022-02-05 ValidFAA registration status code V: Valid registration. All codes
N1560J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-02-04 ValidFAA registration status code V: Valid registration. All codes
N7108Q Cessna
172L
Fixed-wing, single engine Individual owner
North Dakota
Standard 2022-02-04 ValidFAA registration status code V: Valid registration. All codes
N8141Z Piper
PA-28-161
Fixed-wing, single engine Fbni INC
Oakland, Maryland
Standard 2022-02-04 ValidFAA registration status code V: Valid registration. All codes
N2056E Cessna
172M
Fixed-wing, single engine Feauto Aviation LLC
Saint Cloud, Florida
Standard 2022-02-03 ValidFAA registration status code V: Valid registration. All codes
N54141 Cessna
172P
Fixed-wing, single engine Traverse City Helicopters LLC
Traverse City, Michigan
Standard 2022-02-03 ValidFAA registration status code V: Valid registration. All codes
N6859J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2022-02-03 ValidFAA registration status code V: Valid registration. All codes
N8491Y Piper
PA-18-150
Fixed-wing, single engine Rollman Levi S
Wasilla, Alaska
Standard 2022-02-03 ValidFAA registration status code V: Valid registration. All codes
N590FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2022-02-02 ValidFAA registration status code V: Valid registration. All codes
N79478 Cessna
172K
Fixed-wing, single engine Individual owner
California
Standard 2022-02-02 ValidFAA registration status code V: Valid registration. All codes
N82487 Piper
PA-28-161
Fixed-wing, single engine Woodruff Thomas C
Pacific Grove, California
Standard 2022-02-02 ValidFAA registration status code V: Valid registration. All codes
N113RV Rowe A L/Mclaughlin D B
RV 4
Fixed-wing, single engine Individual owner
Indiana
Experimental 2022-02-01 ValidFAA registration status code V: Valid registration. All codes
N3979Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2022-02-01 ValidFAA registration status code V: Valid registration. All codes
N5678U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2022-02-01 ValidFAA registration status code V: Valid registration. All codes
N602RV Sigmon Harvey E
RV-6A
Fixed-wing, single engine Quick Comfort INC
Allen, Kansas
Experimental 2022-02-01 ValidFAA registration status code V: Valid registration. All codes
N7301G Cessna
172K
Fixed-wing, single engine Freeport Flyers INC
Freeport, Illinois
Standard 2022-02-01 ValidFAA registration status code V: Valid registration. All codes
N2356P Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Texas
Multiple 2022-01-31 ValidFAA registration status code V: Valid registration. All codes
N37P Harper L E
RV 6A
Fixed-wing, single engine Individual owner
Texas
Experimental 2022-01-31 ValidFAA registration status code V: Valid registration. All codes
N5047T Bellanca
7GCBC
Fixed-wing, single engine Blues Air LLC
Cleveland, Mississippi
Standard 2022-01-31 ValidFAA registration status code V: Valid registration. All codes
N55404 Cessna
172P
Fixed-wing, single engine Atlanta Aviation Academy INC
Lawrenceville, Georgia
Standard 2022-01-31 ValidFAA registration status code V: Valid registration. All codes
N150FS Cessna
172M
Fixed-wing, single engine Custom Air International LLC
Homestead, Florida
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N2826Q Cessna
172L
Fixed-wing, single engine Individual owner
Missouri
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N3000Z Piper
PA-22-150
Fixed-wing, single engine Withheld at owner's request
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N3577P Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N3978Q Cessna
172L
Fixed-wing, single engine Dv Aircraft Leasing
Green Bay, Wisconsin
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N4095P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Florida
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N5187G Cessna
172N
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N5322Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N65516 Cessna
172P
Fixed-wing, single engine J-Airco LLC
Nashville, Tennessee
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N738AD Cessna
172N
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N8434D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N8807 Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N888EZ Kreidel/Kreidel
LONG EZ
Fixed-wing, single engine Individual owner
California
Experimental 2022-01-29 ValidFAA registration status code V: Valid registration. All codes
N2208B Luscombe
T-8F
Fixed-wing, single engine Individual owner
Nevada
Standard 2022-01-28 ValidFAA registration status code V: Valid registration. All codes
N30622 Piper
J5A
Fixed-wing, single engine Money Aerial Media LLC
San Diego, California
Restricted 2022-01-28 ValidFAA registration status code V: Valid registration. All codes
N4187J Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Dakota
Standard 2022-01-28 ValidFAA registration status code V: Valid registration. All codes
N8030N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2022-01-28 ValidFAA registration status code V: Valid registration. All codes
N83620 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2022-01-28 ValidFAA registration status code V: Valid registration. All codes
N913MS Piper
PA-28-151
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2022-01-28 ValidFAA registration status code V: Valid registration. All codes
N13535 Cessna
172M
Fixed-wing, single engine Aviation Academy LLC
Wichita, Kansas
Standard 2022-01-27 ValidFAA registration status code V: Valid registration. All codes
N222EW Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Florida
Standard 2022-01-27 ValidFAA registration status code V: Valid registration. All codes
N4023F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Maryland
Standard 2022-01-27 ValidFAA registration status code V: Valid registration. All codes
N7558D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2022-01-27 ValidFAA registration status code V: Valid registration. All codes
N8713J Nyberg Randall L
RV-9
Fixed-wing, single engine Individual owner
Iowa
Experimental 2022-01-27 ValidFAA registration status code V: Valid registration. All codes
N12BV Robinson Helicopter
R22
Helicopter Individual owner
Virginia
Restricted 2022-01-26 ValidFAA registration status code V: Valid registration. All codes
N5791F Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2022-01-26 ValidFAA registration status code V: Valid registration. All codes
N8165G Piper
PA-28-161
Fixed-wing, single engine Skychaser LLC
Green Brook, New Jersey
Standard 2022-01-26 ValidFAA registration status code V: Valid registration. All codes
N12901 Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2022-01-25 ValidFAA registration status code V: Valid registration. All codes
N211AV Cessna
172N
Fixed-wing, single engine N8191E LLC
Manassas, Virginia
Standard 2022-01-25 ValidFAA registration status code V: Valid registration. All codes
N4249T Piper
PA-28-140
Fixed-wing, single engine Gulf Bravo Aviation LLC
Lafayette, Louisiana
Standard 2022-01-25 ValidFAA registration status code V: Valid registration. All codes
N5030T Bellanca
7GCAA
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2022-01-25 ValidFAA registration status code V: Valid registration. All codes
N6366N Champion
7GCAA
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-01-25 ValidFAA registration status code V: Valid registration. All codes
N10DU Piper
PA-18-150
Fixed-wing, single engine Out There Outfitters LLC
Boise, Idaho
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N1418V Cessna
172M
Fixed-wing, single engine Beverly Flight Center LLC
Middleton, Massachusetts
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N30EC Ramsey E C
RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N3332Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Montana
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N422WF Piper
PA-12
Fixed-wing, single engine Individual owner
Michigan
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N427K Lightsey William D
GLASAIR II-S FT
Fixed-wing, single engine Individual owner
Maryland
Experimental 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N4532X Piper
PA-28-151
Fixed-wing, single engine Individual owner
Minnesota
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N46655 Cessna
172K
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N5071G Bellanca
7GCBC
Fixed-wing, single engine Rowland Dusters LLC
Raymondville, Texas
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N56751 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Florida
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N7051R Piper
PA-28-140
Fixed-wing, single engine Best Equipment Leasing LLC
Bakersfield, California
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N737DT Cessna
172N
Fixed-wing, single engine Advance Aviation LLC
Mount Vernon, Iowa
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N8883N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N9957D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Delaware
Standard 2022-01-24 ValidFAA registration status code V: Valid registration. All codes
N1961F Cessna
172N
Fixed-wing, single engine Remove B4 Flight LLC
Joplin, Missouri
Standard 2022-01-22 ValidFAA registration status code V: Valid registration. All codes
N2983P Piper
PA-18A 150
Fixed-wing, single engine Eastgate Motors INC
Salem, Oregon
Multiple 2022-01-22 ValidFAA registration status code V: Valid registration. All codes
N3659X Aero Commander
100
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-01-22 ValidFAA registration status code V: Valid registration. All codes
N402PK Kucharski Stanley J
STORM 400 SP
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2022-01-22 ValidFAA registration status code V: Valid registration. All codes
N738HJ Cessna
172N
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2022-01-22 ValidFAA registration status code V: Valid registration. All codes
N79920 Cessna
172K
Fixed-wing, single engine Rtd Aviation LLC
Hillsborough, New Jersey
Standard 2022-01-22 ValidFAA registration status code V: Valid registration. All codes
N8741V Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2022-01-22 ValidFAA registration status code V: Valid registration. All codes
N105JK Cessna
172P
Fixed-wing, single engine Sky West Aviation INC Trustee
Albuquerque, New Mexico
Standard 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N252SB Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N3012Z Piper
PA-22-150
Fixed-wing, single engine Chase 13 LLC
Wilmington, Delaware
Standard 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N4543T Piper
PA-28-140
Fixed-wing, single engine Nichols Curtis
Gloucester, Virginia
Standard 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N5483K Cessna
172P
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N64447 Cessna
172M
Fixed-wing, single engine N64447 Series of Moapa Valley Aeronautical LLC
Logandale, Nevada
Standard 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N691FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N7163G Cessna
172K
Fixed-wing, single engine Ds Flight Services LLC
Battle Ground, Washington
Standard 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N870TW Cessna
172M
Fixed-wing, single engine Southern Haulers LLC
Leachville, Arkansas
Standard 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N9159H Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2022-01-21 ValidFAA registration status code V: Valid registration. All codes
N61764 Darby John C Jr
RV-6
Fixed-wing, single engine Individual owner
California
Experimental 2022-01-20 ValidFAA registration status code V: Valid registration. All codes
N707FT Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-01-20 ValidFAA registration status code V: Valid registration. All codes
N8097J Piper
PA-28-161
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-01-20 ValidFAA registration status code V: Valid registration. All codes
N5385Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Nevada
Multiple 2022-01-19 ValidFAA registration status code V: Valid registration. All codes
N5513U Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2022-01-19 ValidFAA registration status code V: Valid registration. All codes
N6286W Piper
PA-28-140
Fixed-wing, single engine Western Plains Aviation LLC
Greeley, Colorado
Standard 2022-01-19 ValidFAA registration status code V: Valid registration. All codes
N738MJ Cessna
172N
Fixed-wing, single engine Optic Air LLC
Sioux Center, Iowa
Standard 2022-01-19 ValidFAA registration status code V: Valid registration. All codes
N2523P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2022-01-18 ValidFAA registration status code V: Valid registration. All codes
N12897 Cessna
172M
Fixed-wing, single engine Foothill Aircraft Sales & Service INC
Upland, California
Standard 2022-01-15 ValidFAA registration status code V: Valid registration. All codes
N160BA Beyea Kyle H
AVID MAGNUM
Fixed-wing, single engine Hitec Construction Services INC
Lincoln, California
Experimental 2022-01-15 ValidFAA registration status code V: Valid registration. All codes
N1884V Cessna
172M
Fixed-wing, single engine Co-owned owner
West Virginia
Standard 2022-01-15 ValidFAA registration status code V: Valid registration. All codes
N24597 Beech
B19
Fixed-wing, single engine Smoketown Flight Center LLC
Smoketown, Pennsylvania
Standard 2022-01-15 ValidFAA registration status code V: Valid registration. All codes
N3345T Cessna
177
Fixed-wing, single engine Individual owner
New York
Standard 2022-01-15 ValidFAA registration status code V: Valid registration. All codes
N5274H Cessna
172M
Fixed-wing, single engine Lincoln Skyways INC
Lincoln, California
Standard 2022-01-15 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.