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
N75774 Cessna
172N
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-08-22 ValidFAA registration status code V: Valid registration. All codes
N9649D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2019-08-22 ValidFAA registration status code V: Valid registration. All codes
N12887 Cessna
172M
Fixed-wing, single engine Slipstream Aviation LLC
Calera, Alabama
Standard 2019-08-21 ValidFAA registration status code V: Valid registration. All codes
N2837X Cessna
177
Fixed-wing, single engine Airspeed Marketing LLC
Phoenix, Arizona
Standard 2019-08-21 ValidFAA registration status code V: Valid registration. All codes
N4157L Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Utah
Standard 2019-08-21 ValidFAA registration status code V: Valid registration. All codes
N4184J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2019-08-21 ValidFAA registration status code V: Valid registration. All codes
N4VT Piper
PA-28-161
Fixed-wing, single engine Up and Up Aviation LLC
Magnolia, Texas
Standard 2019-08-21 ValidFAA registration status code V: Valid registration. All codes
N6523W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kentucky
Standard 2019-08-21 ValidFAA registration status code V: Valid registration. All codes
N80759 Cessna
172M
Fixed-wing, single engine Leaseair LLC
Wilmington, Delaware
Standard 2019-08-21 ValidFAA registration status code V: Valid registration. All codes
N1746T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2019-08-20 ValidFAA registration status code V: Valid registration. All codes
N1810P Piper
PA-22
Fixed-wing, single engine Individual owner
Washington
Standard 2019-08-20 ValidFAA registration status code V: Valid registration. All codes
N2191W Beech
B19
Fixed-wing, single engine Individual owner
Kansas
Standard 2019-08-20 ValidFAA registration status code V: Valid registration. All codes
N221TJ Cessna
172N
Fixed-wing, single engine Safety In Motion Flight Center INC
Puyallup, Washington
Standard 2019-08-20 ValidFAA registration status code V: Valid registration. All codes
N372SA Cessna
172N
Fixed-wing, single engine Joe Wagner IV Construction LLC
Zebulon, North Carolina
Standard 2019-08-20 ValidFAA registration status code V: Valid registration. All codes
N4251J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-08-20 ValidFAA registration status code V: Valid registration. All codes
N8389L Cessna
172I
Fixed-wing, single engine Jkg LLC
Murfreesboro, Tennessee
Standard 2019-08-20 ValidFAA registration status code V: Valid registration. All codes
N13927 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-08-19 ValidFAA registration status code V: Valid registration. All codes
N2444P Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Carolina
Standard 2019-08-19 ValidFAA registration status code V: Valid registration. All codes
N26427 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine She Runs I Fly LLC
Cincinnati, Ohio
Standard 2019-08-19 ValidFAA registration status code V: Valid registration. All codes
N46205 Cessna
172I
Fixed-wing, single engine Individual owner
California
Standard 2019-08-19 ValidFAA registration status code V: Valid registration. All codes
N5574U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2019-08-19 ValidFAA registration status code V: Valid registration. All codes
N56734 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-08-19 ValidFAA registration status code V: Valid registration. All codes
N699RV Lyons Nathan F
VANS RV-6A
Fixed-wing, single engine Individual owner
Washington
Experimental 2019-08-19 ValidFAA registration status code V: Valid registration. All codes
N4141Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Minnesota
Multiple 2019-08-16 ValidFAA registration status code V: Valid registration. All codes
N7419G Cessna
172K
Fixed-wing, single engine Flycarolina LLC
Concord, North Carolina
Standard 2019-08-16 ValidFAA registration status code V: Valid registration. All codes
N7771R Ray Ingeborg L
GLASAIR SH2F
Fixed-wing, single engine Co-owned owner
Maine
Experimental 2019-08-16 ValidFAA registration status code V: Valid registration. All codes
N349M Landoll Mark
VANS RV3A
Fixed-wing, single engine Individual owner
California
Experimental 2019-08-15 ValidFAA registration status code V: Valid registration. All codes
N9847L Cessna
172P
Fixed-wing, single engine Joerithan & Mp Aviation LLC
Whittier, California
Standard 2019-08-15 ValidFAA registration status code V: Valid registration. All codes
N1632E Cessna
172N
Fixed-wing, single engine Xin Han Aviation LLC
Atwater, California
Standard 2019-08-14 ValidFAA registration status code V: Valid registration. All codes
N226JA Cessna
172M
Fixed-wing, single engine Xin Han Aviation LLC
Atwater, California
Standard 2019-08-14 ValidFAA registration status code V: Valid registration. All codes
N294B Duffy William J
VANS RV9A
Fixed-wing, single engine Individual owner
Missouri
Experimental 2019-08-14 ValidFAA registration status code V: Valid registration. All codes
N35726 Cessna
172I
Fixed-wing, single engine Jh Aero LLC
Little Rock, Arkansas
Standard 2019-08-14 ValidFAA registration status code V: Valid registration. All codes
N479NT Cessna
172M
Fixed-wing, single engine Flight World INC
San Juan, Puerto Rico
Standard 2019-08-14 ValidFAA registration status code V: Valid registration. All codes
N5358D Cessna
172N
Fixed-wing, single engine Xin Han Aviation LLC
Atwater, California
Standard 2019-08-14 ValidFAA registration status code V: Valid registration. All codes
N62142 Cessna
172P
Fixed-wing, single engine Xin Han Aviation LLC
Atwater, California
Standard 2019-08-14 ValidFAA registration status code V: Valid registration. All codes
N6915W Piper
PA-28-140
Fixed-wing, single engine Oso Air LLC
Missoula, Montana
Standard 2019-08-14 ValidFAA registration status code V: Valid registration. All codes
N7140Q Cessna
172L
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2019-08-14 ValidFAA registration status code V: Valid registration. All codes
N7823D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Virginia
Standard 2019-08-14 ValidFAA registration status code V: Valid registration. All codes
N38190 Piper
PA-28-140
Fixed-wing, single engine Classic Aviation INC
Pella, Iowa
Standard 2019-08-13 ValidFAA registration status code V: Valid registration. All codes
N4155R Piper
PA-18-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2019-08-13 ValidFAA registration status code V: Valid registration. All codes
N4807D Cessna
172N
Fixed-wing, single engine Co-owned owner
Washington
Standard 2019-08-13 ValidFAA registration status code V: Valid registration. All codes
N87NM Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2019-08-13 ValidFAA registration status code V: Valid registration. All codes
N381CA American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
New Mexico
Standard 2019-08-12 ValidFAA registration status code V: Valid registration. All codes
N416RK Piper
PA-18-150
Fixed-wing, single engine Windyfork LLC
Black Mountain, North Carolina
Standard 2019-08-12 ValidFAA registration status code V: Valid registration. All codes
N7638G Cessna
172L
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2019-08-12 ValidFAA registration status code V: Valid registration. All codes
N984FA Cessna
172L
Fixed-wing, single engine Freedom Aviation INC
Lynchburg, Virginia
Standard 2019-08-12 ValidFAA registration status code V: Valid registration. All codes
N202MA Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2019-08-09 ValidFAA registration status code V: Valid registration. All codes
N78254 Cessna
172K
Fixed-wing, single engine Bpk Holdings LLC
Montesano, Washington
Standard 2019-08-09 ValidFAA registration status code V: Valid registration. All codes
N1858F Murris Fred
FOKKER DR-1
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2019-08-08 ValidFAA registration status code V: Valid registration. All codes
N3081P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Wisconsin
Standard 2019-08-08 ValidFAA registration status code V: Valid registration. All codes
N399BP Pretzsch Robert F
PRETZSCH 6-A
Fixed-wing, single engine Amber Air LLC
Dallas, Texas
Experimental 2019-08-08 ValidFAA registration status code V: Valid registration. All codes
N46531 Cessna
172K
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2019-08-08 ValidFAA registration status code V: Valid registration. All codes
N6PU Brewer Kenneth O
RV6A
Fixed-wing, single engine Individual owner
Georgia
Experimental 2019-08-08 ValidFAA registration status code V: Valid registration. All codes
N830MD Piper
PA-22-160
Fixed-wing, single engine Individual owner
Florida
Standard 2019-08-08 ValidFAA registration status code V: Valid registration. All codes
N9693P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-08-08 ValidFAA registration status code V: Valid registration. All codes
N4470J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-08-07 ValidFAA registration status code V: Valid registration. All codes
N5423K Cessna
172P
Fixed-wing, single engine Individual owner
California
Standard 2019-08-07 ValidFAA registration status code V: Valid registration. All codes
N5717D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Illinois
Standard 2019-08-07 ValidFAA registration status code V: Valid registration. All codes
N95471 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-08-07 ValidFAA registration status code V: Valid registration. All codes
N5202J Cessna
172N
Fixed-wing, single engine Lizco Aviation LLC
Jackson, Missouri
Standard 2019-08-06 ValidFAA registration status code V: Valid registration. All codes
N7866G Cessna
172L
Fixed-wing, single engine Surfside Seaplane Training LLC
Lino Lakes, Minnesota
Standard 2019-08-06 ValidFAA registration status code V: Valid registration. All codes
N2212Y Cessna
177
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2019-08-05 ValidFAA registration status code V: Valid registration. All codes
N32353 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Maine
Standard 2019-08-05 ValidFAA registration status code V: Valid registration. All codes
N35665 Cessna
172I
Fixed-wing, single engine Individual owner
Washington
Standard 2019-08-05 ValidFAA registration status code V: Valid registration. All codes
N37DK Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Co-owned owner
New Mexico
Standard 2019-08-05 ValidFAA registration status code V: Valid registration. All codes
N779PT Cessna
172M
Fixed-wing, single engine Macon Air LLC
Franklin, North Carolina
Standard 2019-08-05 ValidFAA registration status code V: Valid registration. All codes
N8750 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-08-05 ValidFAA registration status code V: Valid registration. All codes
N4473Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-08-02 ValidFAA registration status code V: Valid registration. All codes
N57555 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2019-08-02 ValidFAA registration status code V: Valid registration. All codes
N2289A Piper
PA-22
Fixed-wing, single engine Individual owner
California
Standard 2019-08-01 ValidFAA registration status code V: Valid registration. All codes
N46200 Cessna
172I
Fixed-wing, single engine Individual owner
Indiana
Standard 2019-08-01 ValidFAA registration status code V: Valid registration. All codes
N5378E Cessna
172N
Fixed-wing, single engine Individual owner
Idaho
Standard 2019-08-01 ValidFAA registration status code V: Valid registration. All codes
N733XE Cessna
172N
Fixed-wing, single engine Aeroventures Flying Club INC
Lilburn, Georgia
Standard 2019-08-01 ValidFAA registration status code V: Valid registration. All codes
N737YE Cessna
172N
Fixed-wing, single engine Aeroventures Flying Club INC
Lilburn, Georgia
Standard 2019-08-01 ValidFAA registration status code V: Valid registration. All codes
N8054C Piper
PA-28-151
Fixed-wing, single engine Individual owner
Arizona
Standard 2019-08-01 ValidFAA registration status code V: Valid registration. All codes
N9951V Cessna
172M
Fixed-wing, single engine 9951V Aircraft Leasing LLC
Spanish Fork, Utah
Standard 2019-08-01 ValidFAA registration status code V: Valid registration. All codes
N3430P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Texas
Standard 2019-07-31 ValidFAA registration status code V: Valid registration. All codes
N5223R Cessna
172M
Fixed-wing, single engine N5223R LLC
Opa Locka, Florida
Standard 2019-07-31 ValidFAA registration status code V: Valid registration. All codes
N6705J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2019-07-31 ValidFAA registration status code V: Valid registration. All codes
N7412J Piper
PA-28-140
Fixed-wing, single engine Dubois Aviation INC
Chino, California
Standard 2019-07-31 ValidFAA registration status code V: Valid registration. All codes
N8079Y Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2019-07-31 ValidFAA registration status code V: Valid registration. All codes
N9849W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2019-07-31 ValidFAA registration status code V: Valid registration. All codes
N15057 Piper
PA-28-140
Fixed-wing, single engine Bad Dog Aviation
Meridianville, Alabama
Standard 2019-07-30 ValidFAA registration status code V: Valid registration. All codes
N1661P Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2019-07-30 ValidFAA registration status code V: Valid registration. All codes
N173PF Soukup William G
WAG-AERO SPRTSMN 2+2
Fixed-wing, single engine Withheld at owner's request
Experimental 2019-07-30 ValidFAA registration status code V: Valid registration. All codes
N53TT Hentges David
PROSTAR PT2C
Fixed-wing, single engine National Access CORP
Lancaster, Pennsylvania
Experimental 2019-07-30 ValidFAA registration status code V: Valid registration. All codes
N6883Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-07-30 ValidFAA registration status code V: Valid registration. All codes
N7180G Cessna
172K
Fixed-wing, single engine Pearman Properties LLC
Branson, Missouri
Standard 2019-07-30 ValidFAA registration status code V: Valid registration. All codes
N8820D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-07-30 ValidFAA registration status code V: Valid registration. All codes
N9027F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-07-30 ValidFAA registration status code V: Valid registration. All codes
N3770X Aero Commander
100
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-07-29 ValidFAA registration status code V: Valid registration. All codes
N3951P Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Carolina
Standard 2019-07-29 ValidFAA registration status code V: Valid registration. All codes
N5105V Morrisey
2150
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-07-29 ValidFAA registration status code V: Valid registration. All codes
N5117E Cessna
172N
Fixed-wing, single engine Jav Air Services LLC
Anchorage, Alaska
Standard 2019-07-29 ValidFAA registration status code V: Valid registration. All codes
N61817 Cessna
172M
Fixed-wing, single engine Rb Aviation LLC
Vassar, Michigan
Standard 2019-07-29 ValidFAA registration status code V: Valid registration. All codes
N6601W Piper
PA-28-140
Fixed-wing, single engine Aircraft Guaranty CORP Trustee
Oklahoma City, Oklahoma
Standard 2019-07-29 ValidFAA registration status code V: Valid registration. All codes
N734DT Cessna
172N
Fixed-wing, single engine Silver Express CO DBA
Miami, Florida
Standard 2019-07-29 ValidFAA registration status code V: Valid registration. All codes
N7217G Cessna
172K
Fixed-wing, single engine One Niner Right LLC
Berkeley, California
Standard 2019-07-26 ValidFAA registration status code V: Valid registration. All codes
N3125T Cessna
177
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-07-25 ValidFAA registration status code V: Valid registration. All codes
N6031E Cessna
172N
Fixed-wing, single engine High Exposure INC
Wilmington, Delaware
Standard 2019-07-25 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.