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
N12342 Cessna
172M
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2015-04-29 ValidFAA registration status code V: Valid registration. All codes
N3839P Piper
PA-22-150
Fixed-wing, single engine Morris Equipment LLC
Yuma, Arizona
Standard 2015-04-29 ValidFAA registration status code V: Valid registration. All codes
N7204Q Cessna
172L
Fixed-wing, single engine Texas Air Rangers LLC
Mckinney, Texas
Standard 2015-04-29 ValidFAA registration status code V: Valid registration. All codes
N73662 Cessna
172N
Fixed-wing, single engine Individual owner
Arizona
Standard 2015-04-29 ValidFAA registration status code V: Valid registration. All codes
N12573 Cessna
172M
Fixed-wing, single engine Plane N12573 INC
Arlington, Tennessee
Standard 2015-04-28 ValidFAA registration status code V: Valid registration. All codes
N1398R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Tennessee
Standard 2015-04-28 ValidFAA registration status code V: Valid registration. All codes
N20464 Cessna
172M
Fixed-wing, single engine 8231 Tango Enterprises LLC
Guthrie, Oklahoma
Standard 2015-04-28 ValidFAA registration status code V: Valid registration. All codes
N4122J Piper
PA-28-140
Fixed-wing, single engine Collum Aviation LLC
Milton, Florida
Standard 2015-04-28 ValidFAA registration status code V: Valid registration. All codes
N72035 Cessna
177
Fixed-wing, single engine Individual owner
Washington
Standard 2015-04-28 ValidFAA registration status code V: Valid registration. All codes
N734BT Cessna
172N
Fixed-wing, single engine Sorbi Aviation INC
El Cajon, California
Standard 2015-04-28 ValidFAA registration status code V: Valid registration. All codes
N9678Q Cessna
172M
Fixed-wing, single engine Northgate Aviation INC
Chico, California
Standard 2015-04-28 ValidFAA registration status code V: Valid registration. All codes
N156EW Piper
PA-28-161
Fixed-wing, single engine Skyblue Aviation Cr INC
Merritt Island, Florida
Standard 2015-04-27 ValidFAA registration status code V: Valid registration. All codes
N3021E Cessna
172N
Fixed-wing, single engine Aircraft Solutions LLC
Spokane, Washington
Standard 2015-04-27 ValidFAA registration status code V: Valid registration. All codes
N4205H Piper
PA-14
Fixed-wing, single engine Individual owner
Washington
Standard 2015-04-27 ValidFAA registration status code V: Valid registration. All codes
N5317K Cessna
172P
Fixed-wing, single engine N5317K CORP Trustee
Wilmington, Delaware
Standard 2015-04-27 ValidFAA registration status code V: Valid registration. All codes
N2555P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2015-04-23 ValidFAA registration status code V: Valid registration. All codes
N3054E Cessna
172N
Fixed-wing, single engine Princeton Flying Club INC
Wilmington, Delaware
Standard 2015-04-23 ValidFAA registration status code V: Valid registration. All codes
N4820G Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2015-04-23 ValidFAA registration status code V: Valid registration. All codes
N738YJ Cessna
172N
Fixed-wing, single engine Ozarka College
Melbourne, Arkansas
Standard 2015-04-23 ValidFAA registration status code V: Valid registration. All codes
N8094N Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2015-04-23 ValidFAA registration status code V: Valid registration. All codes
N88118 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Mississippi
Standard 2015-04-23 ValidFAA registration status code V: Valid registration. All codes
N13660 Cessna
172M
Fixed-wing, single engine Fly Right LLC
Ridgefield, Connecticut
Standard 2015-04-22 ValidFAA registration status code V: Valid registration. All codes
N52384 Cessna
172P
Fixed-wing, single engine Jane LLC
Somerset, Massachusetts
Standard 2015-04-22 ValidFAA registration status code V: Valid registration. All codes
N5495D Cessna
172N
Fixed-wing, single engine Sorbi Aviation INC
El Cajon, California
Standard 2015-04-22 ValidFAA registration status code V: Valid registration. All codes
N64219 Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2015-04-22 ValidFAA registration status code V: Valid registration. All codes
N3532P Piper
PA-22
Fixed-wing, single engine Individual owner
Washington
Standard 2015-04-21 ValidFAA registration status code V: Valid registration. All codes
N7195Q Cessna
172L
Fixed-wing, single engine Puget Sound Flyers
Everett, Washington
Standard 2015-04-21 ValidFAA registration status code V: Valid registration. All codes
N74KL Linch Kenneth T
LINCH
Fixed-wing, single engine Individual owner
Florida
Experimental 2015-04-20 ValidFAA registration status code V: Valid registration. All codes
N8410L Cessna
172I
Fixed-wing, single engine Victory Lane Aviation LLC
Concord, North Carolina
Standard 2015-04-17 ValidFAA registration status code V: Valid registration. All codes
N9537L Cessna
172P
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2015-04-17 ValidFAA registration status code V: Valid registration. All codes
N6816F Piper
PA-28-151
Fixed-wing, single engine Quality Aviation INC
Faribault, Minnesota
Standard 2015-04-16 ValidFAA registration status code V: Valid registration. All codes
N7084D Piper
PA-18A
Fixed-wing, single engine Individual owner
Minnesota
Restricted 2015-04-16 ValidFAA registration status code V: Valid registration. All codes
N1850A Piper
PA-18A-135
Fixed-wing, single engine Individual owner
Wisconsin
Restricted 2015-04-15 ValidFAA registration status code V: Valid registration. All codes
N6043D Piper
PA-22-150
Fixed-wing, single engine Down and Green LLC
Trenton, Michigan
Standard 2015-04-15 ValidFAA registration status code V: Valid registration. All codes
N7287G Cessna
172K
Fixed-wing, single engine Ten Mile Ranch INC
Vale, Oregon
Standard 2015-04-15 ValidFAA registration status code V: Valid registration. All codes
N143PS Jordan Bj
DEFIANT
Fixed-wing, multi-engine Individual owner
Florida
Experimental 2015-04-14 ValidFAA registration status code V: Valid registration. All codes
N282V Hooton Jack
RV-4
Fixed-wing, single engine Co-owned owner
Arizona
Experimental 2015-04-14 ValidFAA registration status code V: Valid registration. All codes
N5464K Cessna
172P
Fixed-wing, single engine Trend Vector Aviation International INC
Barrigada, Guam
Standard 2015-04-14 ValidFAA registration status code V: Valid registration. All codes
N5866W Piper
PA-28-160
Fixed-wing, single engine Capitol City Aviation INC
West Sacramento, California
Standard 2015-04-14 ValidFAA registration status code V: Valid registration. All codes
N9053M Cannon Donny
RV-3
Fixed-wing, single engine Individual owner
Arizona
Experimental 2015-04-14 ValidFAA registration status code V: Valid registration. All codes
N19710 Cessna
172L
Fixed-wing, single engine Bremfour Aviation Group INC
Wilmington, Delaware
Standard 2015-04-13 ValidFAA registration status code V: Valid registration. All codes
N318RC Cessna
172N
Fixed-wing, single engine Individual owner
Missouri
Standard 2015-04-13 ValidFAA registration status code V: Valid registration. All codes
N32042 Piper
PA-28-151
Fixed-wing, single engine Van Anda Aviation LLC
Apopka, Florida
Standard 2015-04-13 ValidFAA registration status code V: Valid registration. All codes
N54360 Cessna
172P
Fixed-wing, single engine A S Flight Academy LLC
Lantana, Florida
Standard 2015-04-13 ValidFAA registration status code V: Valid registration. All codes
N734LW Cessna
172N
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2015-04-13 ValidFAA registration status code V: Valid registration. All codes
N3817Q Cessna
172L
Fixed-wing, single engine Moses Aviation Services LLC
Uvalde, Texas
Restricted 2015-04-10 ValidFAA registration status code V: Valid registration. All codes
N80299 Cessna
172M
Fixed-wing, single engine Mountain Air Aviation INC
Bethesda, Maryland
Standard 2015-04-10 ValidFAA registration status code V: Valid registration. All codes
N1670G Champion
7GCBC
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2015-04-09 ValidFAA registration status code V: Valid registration. All codes
N327ED Beach Charles E
RV-4
Fixed-wing, single engine Individual owner
Ohio
Experimental 2015-04-09 ValidFAA registration status code V: Valid registration. All codes
N5529W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Maine
Standard 2015-04-09 ValidFAA registration status code V: Valid registration. All codes
N6110A Piper
PA-18-150
Fixed-wing, single engine State of Montana
Helena, Montana
Standard 2015-04-09 ValidFAA registration status code V: Valid registration. All codes
N9943U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
California
Standard 2015-04-08 ValidFAA registration status code V: Valid registration. All codes
N21690 Cessna
172M
Fixed-wing, single engine Flight Center International LLC
Hollywood, Florida
Standard 2015-04-07 ValidFAA registration status code V: Valid registration. All codes
N4332L Piper
PA-28-161
Fixed-wing, single engine Individual owner
Vermont
Standard 2015-04-07 ValidFAA registration status code V: Valid registration. All codes
N59WB Brown William G
RV-4
Fixed-wing, single engine Whiskey Bravo LLC
Scottsdale, Arizona
Experimental 2015-04-07 ValidFAA registration status code V: Valid registration. All codes
N734QM Cessna
172N
Fixed-wing, single engine Alaska Sky School LLC
Anchorage, Alaska
Standard 2015-04-07 ValidFAA registration status code V: Valid registration. All codes
N9809U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Utah
Standard 2015-04-07 ValidFAA registration status code V: Valid registration. All codes
N12624 Cessna
172M
Fixed-wing, single engine Individual owner
Hawaii
Standard 2015-04-06 ValidFAA registration status code V: Valid registration. All codes
N174RC Bellanca
7GCBC
Fixed-wing, single engine Individual owner
California
Standard 2015-04-06 ValidFAA registration status code V: Valid registration. All codes
N430FS Cessna
172N
Fixed-wing, single engine Custom Air International LLC
Homestead, Florida
Standard 2015-04-06 ValidFAA registration status code V: Valid registration. All codes
N5508J Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2015-04-06 ValidFAA registration status code V: Valid registration. All codes
N797RJ Cessna
172N
Fixed-wing, single engine Seven 4 Zulu LLC
San Diego, California
Standard 2015-04-06 ValidFAA registration status code V: Valid registration. All codes
N2345P Robinson Helicopter
R22 BETA
Helicopter Spitzer Helicopter LLC
Woodland Hills, California
Standard 2015-04-03 ValidFAA registration status code V: Valid registration. All codes
N3907K Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2015-04-03 ValidFAA registration status code V: Valid registration. All codes
N68F Piper
PA-22-150
Fixed-wing, single engine Individual owner
Louisiana
Standard 2015-04-03 ValidFAA registration status code V: Valid registration. All codes
N8094Q Robinson Helicopter
R22 BETA
Helicopter Spitzer Helicopter LLC
Woodland Hills, California
Standard 2015-04-03 ValidFAA registration status code V: Valid registration. All codes
N15179 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2015-04-02 ValidFAA registration status code V: Valid registration. All codes
N7397G Cessna
172K
Fixed-wing, single engine Individual owner
Virginia
Multiple 2015-04-02 ValidFAA registration status code V: Valid registration. All codes
N8128D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alabama
Standard 2015-04-02 ValidFAA registration status code V: Valid registration. All codes
N3240T Cessna
177
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2015-04-01 ValidFAA registration status code V: Valid registration. All codes
N3523P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kentucky
Standard 2015-04-01 ValidFAA registration status code V: Valid registration. All codes
N7253Q Cessna
172L
Fixed-wing, single engine Harry'S Hawks
Wells, Minnesota
Restricted 2015-04-01 ValidFAA registration status code V: Valid registration. All codes
N80673 Cessna
172M
Fixed-wing, single engine Mitchell Aviation LLC
Mitchell, South Dakota
Standard 2015-04-01 ValidFAA registration status code V: Valid registration. All codes
N8550D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Florida
Standard 2015-04-01 ValidFAA registration status code V: Valid registration. All codes
N26273 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Georgia
Standard 2015-03-31 ValidFAA registration status code V: Valid registration. All codes
N33745 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2015-03-31 ValidFAA registration status code V: Valid registration. All codes
N35728 Cessna
172I
Fixed-wing, single engine Gone Broke LLC
Fairhope, Alabama
Standard 2015-03-31 ValidFAA registration status code V: Valid registration. All codes
N4207Y Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2015-03-31 ValidFAA registration status code V: Valid registration. All codes
N9907Y Champion
7GCB
Fixed-wing, single engine Individual owner
Ohio
Multiple 2015-03-31 ValidFAA registration status code V: Valid registration. All codes
N23MZ Cessna
172L
Fixed-wing, single engine Gulfstream Media LLC
Daytona Beach, Florida
Standard 2015-03-30 ValidFAA registration status code V: Valid registration. All codes
N6584W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2015-03-30 ValidFAA registration status code V: Valid registration. All codes
N8183N Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2015-03-30 ValidFAA registration status code V: Valid registration. All codes
N9602S Champion
7GCAA
Fixed-wing, single engine Individual owner
Colorado
Standard 2015-03-30 ValidFAA registration status code V: Valid registration. All codes
N4308J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2015-03-27 ValidFAA registration status code V: Valid registration. All codes
N4358A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Tennessee
Standard 2015-03-27 ValidFAA registration status code V: Valid registration. All codes
N531PC Cessna
172P
Fixed-wing, single engine Co-owned owner
Florida
Standard 2015-03-27 ValidFAA registration status code V: Valid registration. All codes
N65271 Chafer
PITTS SPECIAL S-1C
Fixed-wing, single engine Individual owner
Illinois
Experimental 2015-03-27 ValidFAA registration status code V: Valid registration. All codes
N9896U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
North Carolina
Standard 2015-03-27 ValidFAA registration status code V: Valid registration. All codes
N172WR Cessna
172P
Fixed-wing, single engine Wind River Aviation LLC
Lawton, Oklahoma
Standard 2015-03-26 ValidFAA registration status code V: Valid registration. All codes
N7095G Cessna
172K
Fixed-wing, single engine Individual owner
New Jersey
Standard 2015-03-26 ValidFAA registration status code V: Valid registration. All codes
N1295U Cessna
172M
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2015-03-25 ValidFAA registration status code V: Valid registration. All codes
N2SG American Champion Aircraft
7GCAA
Fixed-wing, single engine Kcsi Aerial Patrol
Bakersfield, California
Standard 2015-03-25 ValidFAA registration status code V: Valid registration. All codes
N65722 Cessna
172P
Fixed-wing, single engine Red River Aviation Services LLC
Altus, Oklahoma
Standard 2015-03-25 ValidFAA registration status code V: Valid registration. All codes
N29440 Cessna
177
Fixed-wing, single engine Eagle Sky Patrol INC
Deadwood, South Dakota
Standard 2015-03-24 ValidFAA registration status code V: Valid registration. All codes
N41QB Piper
PA-18-150
Fixed-wing, single engine Bravo Charlie LLC
Johnston, Iowa
Standard 2015-03-24 ValidFAA registration status code V: Valid registration. All codes
N5960S Schell John J
SUPER KUB NX PA-18
Fixed-wing, single engine Individual owner
Washington
Experimental 2015-03-24 ValidFAA registration status code V: Valid registration. All codes
N1826G Champion
7GCBC
Fixed-wing, single engine Individual owner
South Dakota
Standard 2015-03-23 ValidFAA registration status code V: Valid registration. All codes
N2376T Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2015-03-23 ValidFAA registration status code V: Valid registration. All codes
N26737 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2015-03-23 ValidFAA registration status code V: Valid registration. All codes
N46612 Cessna
172K
Fixed-wing, single engine Individual owner
Washington
Standard 2015-03-23 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.