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
N98212 Piper
PA-28-140
Fixed-wing, single engine Alpha Aviation Group LLC
Clawson, Michigan
Standard 2024-07-17 ValidFAA registration status code V: Valid registration. All codes
N1836J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Missouri
Standard 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N333Y Champion
7GCBC
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N420GB Bruns Gregory
LANCAIR 320
Fixed-wing, single engine Onemanconcrete LLC
Thaxton, Virginia
Experimental 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N4622R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N5081V Varga Aircraft Corp.
2150A
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N66MA Cessna
172P
Fixed-wing, single engine Cp Aviation
Santa Paula, California
Standard 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N73929 Cessna
172N
Fixed-wing, single engine Jprg Aviation INC
Orlando, Florida
Standard 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N7848D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Nebraska
Standard 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N9535H Cessna
172M
Fixed-wing, single engine Northwest Wings LLC
Hillsboro, Oregon
Standard 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N9924V Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2024-07-16 ValidFAA registration status code V: Valid registration. All codes
N1955W Beech
B19
Fixed-wing, single engine Lakeview Farm Foundation CORP
Yukon, Oklahoma
Standard 2024-07-15 ValidFAA registration status code V: Valid registration. All codes
N2328Z Beech
23
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-07-15 ValidFAA registration status code V: Valid registration. All codes
N6037L American
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2024-07-15 ValidFAA registration status code V: Valid registration. All codes
N6573D Cessna
172N
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-07-15 ValidFAA registration status code V: Valid registration. All codes
N713RE Piper
PA-28-161
Fixed-wing, single engine Aks Aviation LLC
Arroyo Grande, California
Standard 2024-07-15 ValidFAA registration status code V: Valid registration. All codes
N75565 Cessna
172N
Fixed-wing, single engine Flight 915 LLC
El Paso, Texas
Standard 2024-07-15 ValidFAA registration status code V: Valid registration. All codes
N7634D Piper
PA-22-150
Fixed-wing, single engine Withheld at owner's request
Standard 2024-07-15 ValidFAA registration status code V: Valid registration. All codes
N38970 Piper
PA-28-161
Fixed-wing, single engine Triple R Aviation LLC
Cleburne, Texas
Standard 2024-07-14 ValidFAA registration status code V: Valid registration. All codes
N54162 Cessna
172P
Fixed-wing, single engine Smtm Holdings INC
Wilmington, Delaware
Standard 2024-07-14 ValidFAA registration status code V: Valid registration. All codes
N66AU Farmer Antony
RV6
Fixed-wing, single engine Sky West Aviation INC Trustee
Albuquerque, New Mexico
Experimental 2024-07-14 ValidFAA registration status code V: Valid registration. All codes
N3019P Piper
PA-23
Fixed-wing, multi-engine Individual owner
New York
Standard 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N3451T Cessna
177
Fixed-wing, single engine Individual owner
New York
Standard 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N39SJ James Sammy E
RV-4
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N4038M Robinson Helicopter
R22 MARINER
Helicopter Alyeska Helicopters LLC
Girdwood, Alaska
Standard 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N4587T Piper
PA-28-140
Fixed-wing, single engine Story'S Aviation Services LLC
Webster, Florida
Standard 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N5253R Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N6432R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N6557H Cessna
172M
Fixed-wing, single engine Riverside Flight Academy LLC
Riverside, California
Standard 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N75721 Cessna
172N
Fixed-wing, single engine Propell Air LLC
Deridder, Louisiana
Restricted 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N9861G Cessna
172L
Fixed-wing, single engine Laurel Highlands Aeronautical Academy
Latrobe, Pennsylvania
Standard 2024-07-13 ValidFAA registration status code V: Valid registration. All codes
N19813 Cessna
172M
Fixed-wing, single engine Co-owned owner
New Hampshire
Standard 2024-07-12 ValidFAA registration status code V: Valid registration. All codes
N3003E Cessna
172N
Fixed-wing, single engine Tuskegee Airmen National Historical Museum
Detroit, Michigan
Standard 2024-07-12 ValidFAA registration status code V: Valid registration. All codes
N41509 Piper
PA-28-151
Fixed-wing, single engine Jw Rew Aviation LLC
Wilmington, Delaware
Standard 2024-07-12 ValidFAA registration status code V: Valid registration. All codes
N5754U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-07-12 ValidFAA registration status code V: Valid registration. All codes
N6322N Champion
7GCAA
Fixed-wing, single engine Individual owner
Maine
Standard 2024-07-12 ValidFAA registration status code V: Valid registration. All codes
N6722W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Utah
Standard 2024-07-12 ValidFAA registration status code V: Valid registration. All codes
N79275 Cessna
172K
Fixed-wing, single engine Individual owner
Indiana
Standard 2024-07-12 ValidFAA registration status code V: Valid registration. All codes
N117JB Cessna
172N
Fixed-wing, single engine Generations Flying Club LLC
Washington, Missouri
Standard 2024-07-11 ValidFAA registration status code V: Valid registration. All codes
N2684T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-07-11 ValidFAA registration status code V: Valid registration. All codes
N6065W Piper
PA-28-140
Fixed-wing, single engine Beyond Aviation LLC
Jacksonville, Florida
Standard 2024-07-11 ValidFAA registration status code V: Valid registration. All codes
N614AZ Cessna
172P
Fixed-wing, single engine Individual owner
Maryland
Standard 2024-07-11 ValidFAA registration status code V: Valid registration. All codes
N6833J Piper
PA-28-140
Fixed-wing, single engine Humphries Aviation LLC
Maysville, Kentucky
Standard 2024-07-11 ValidFAA registration status code V: Valid registration. All codes
N734RE Cessna
172N
Fixed-wing, single engine Interspace Systems LLC
San Diego, California
Standard 2024-07-11 ValidFAA registration status code V: Valid registration. All codes
N98009 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2024-07-11 ValidFAA registration status code V: Valid registration. All codes
N98080 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2024-07-11 ValidFAA registration status code V: Valid registration. All codes
N3171E Cessna
172N
Fixed-wing, single engine Jprg Aviation INC
Orlando, Florida
Standard 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N3188T Cessna
177
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N4145P Piper
PA-23-160
Fixed-wing, multi-engine Blackhawk Holding CORP
Wilmington, Delaware
Standard 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N677M Reed Mike
SMITHS SUPER CUB
Fixed-wing, single engine Individual owner
Idaho
Experimental 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N733JP Cessna
172N
Fixed-wing, single engine Marc Aircraft Holding LLC
Soldotna, Alaska
Standard 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N925CB Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N9540W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2024-07-10 ValidFAA registration status code V: Valid registration. All codes
N28FA Cessna
172P
Fixed-wing, single engine Civil Air Patrol
Maxwell Afb, Alabama
Standard 2024-07-09 ValidFAA registration status code V: Valid registration. All codes
N4007E Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2024-07-09 ValidFAA registration status code V: Valid registration. All codes
N56887 Piper
PA-28-140
Fixed-wing, single engine Leavitt Teyvin M
Coeur D Alene, Idaho
Standard 2024-07-09 ValidFAA registration status code V: Valid registration. All codes
N577FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2024-07-09 ValidFAA registration status code V: Valid registration. All codes
N7326D Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-07-09 ValidFAA registration status code V: Valid registration. All codes
N80173 Cessna
172M
Fixed-wing, single engine Air Athens LLC
Athens, Georgia
Standard 2024-07-09 ValidFAA registration status code V: Valid registration. All codes
N9748W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-07-09 ValidFAA registration status code V: Valid registration. All codes
N2828Q Cessna
172L
Fixed-wing, single engine Jack Dixon
Haiku, Hawaii
Standard 2024-07-08 ValidFAA registration status code V: Valid registration. All codes
N346CS Beech
23
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-07-08 ValidFAA registration status code V: Valid registration. All codes
N506RV Gesele Scott
RV-6A
Fixed-wing, single engine Individual owner
New York
Experimental 2024-07-08 ValidFAA registration status code V: Valid registration. All codes
N516JW Cessna
172M
Fixed-wing, single engine Aerostar LLC
Newport Beach, California
Multiple 2024-07-08 ValidFAA registration status code V: Valid registration. All codes
N7152D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2024-07-08 ValidFAA registration status code V: Valid registration. All codes
N1978N Cessna
172N
Fixed-wing, single engine Individual owner
Montana
Standard 2024-07-07 ValidFAA registration status code V: Valid registration. All codes
N177DK Cessna
177
Fixed-wing, single engine Co-owned owner
New Hampshire
Standard 2024-07-06 ValidFAA registration status code V: Valid registration. All codes
N25T George Tommy K
GLASAIR I FT
Fixed-wing, single engine Individual owner
Kansas
Experimental 2024-07-06 ValidFAA registration status code V: Valid registration. All codes
N4282Q Cessna
172L
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2024-07-06 ValidFAA registration status code V: Valid registration. All codes
N5026R Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2024-07-06 ValidFAA registration status code V: Valid registration. All codes
N5832J Cessna
172N
Fixed-wing, single engine Aerial Advertising Services
Livermore, California
Multiple 2024-07-06 ValidFAA registration status code V: Valid registration. All codes
N8918D Piper
PA-22-160
Fixed-wing, single engine Papalote Ranches LLC
Missoula, Montana
Standard 2024-07-06 ValidFAA registration status code V: Valid registration. All codes
N827GS Sharp Gary A
RV-6A
Fixed-wing, single engine Individual owner
California
Experimental 2024-07-05 ValidFAA registration status code V: Valid registration. All codes
N9722H Cessna
172M
Fixed-wing, single engine Quad Cities Aero LLC
Bettendorf, Iowa
Standard 2024-07-05 ValidFAA registration status code V: Valid registration. All codes
N13236 Cessna
172M
Fixed-wing, single engine Individual owner
Kansas
Standard 2024-07-03 ValidFAA registration status code V: Valid registration. All codes
N32334 Piper
PA-28-151
Fixed-wing, single engine N32334 Aviation LLC
Chandler, Arizona
Standard 2024-07-03 ValidFAA registration status code V: Valid registration. All codes
N73574 Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2024-07-03 ValidFAA registration status code V: Valid registration. All codes
N737GC Cessna
172N
Fixed-wing, single engine Diamond Aircraft Sales of Kentucky LLC
Henderson, Kentucky
Standard 2024-07-03 ValidFAA registration status code V: Valid registration. All codes
N8619V Bellanca
7GCBC
Fixed-wing, single engine Plane Folks LLC
Tucson, Arizona
Standard 2024-07-03 ValidFAA registration status code V: Valid registration. All codes
N26675 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N26781 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N33017 Piper
PA-28-151
Fixed-wing, single engine Nationwide Aviation LLC
Hudson Oaks, Texas
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N330A Piper
PA-22-135
Fixed-wing, single engine Withheld at owner's request
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N4204Z Piper
PA-18-150
Fixed-wing, single engine Kansas Air LLC
Linn, Kansas
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N4391F Piper
PA-28-151
Fixed-wing, single engine Norcal Flight Club
Vacaville, California
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N44267 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N7072R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N7576R Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N79325 Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N79890 Cessna
172K
Fixed-wing, single engine Co-owned owner
Washington
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N8434R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N8957V Cessna
172M
Fixed-wing, single engine N8957V LLC
Fort Lauderdale, Florida
Standard 2024-07-02 ValidFAA registration status code V: Valid registration. All codes
N2253Y Cessna
177
Fixed-wing, single engine Aviation 2000 INC
Fort Mill, South Carolina
Standard 2024-07-01 ValidFAA registration status code V: Valid registration. All codes
N246SP Cessna
172N
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2024-07-01 ValidFAA registration status code V: Valid registration. All codes
N300CM Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Iowa
Standard 2024-07-01 ValidFAA registration status code V: Valid registration. All codes
N422B Cessna
172N
Fixed-wing, single engine Individual owner
New Mexico
Standard 2024-07-01 ValidFAA registration status code V: Valid registration. All codes
N75801 Cessna
172N
Fixed-wing, single engine Hartland Aviation LLC
New Smyrna Beach, Florida
Standard 2024-07-01 ValidFAA registration status code V: Valid registration. All codes
N8379L Cessna
172I
Fixed-wing, single engine San Fernando Aviation LLC
Van Nuys, California
Standard 2024-07-01 ValidFAA registration status code V: Valid registration. All codes
N4669F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-06-30 ValidFAA registration status code V: Valid registration. All codes
N61628 Cessna
172M
Fixed-wing, single engine Nationwide Aviation LLC
Hudson Oaks, Texas
Standard 2024-06-30 ValidFAA registration status code V: Valid registration. All codes
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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.