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
N4818D Cessna
172N
Fixed-wing, single engine Bald Eagle Flying Club
Bridgton, Maine
Standard 2013-08-02 ValidFAA registration status code V: Valid registration. All codes
N738GZ Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2013-08-02 ValidFAA registration status code V: Valid registration. All codes
N19644 Cessna
172L
Fixed-wing, single engine Individual owner
Ohio
Standard 2013-08-01 ValidFAA registration status code V: Valid registration. All codes
N499FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2013-08-01 ValidFAA registration status code V: Valid registration. All codes
N507RH Hill Ray L
RV-6
Fixed-wing, single engine Individual owner
California
Experimental 2013-08-01 ValidFAA registration status code V: Valid registration. All codes
N5152W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Kentucky
Standard 2013-08-01 ValidFAA registration status code V: Valid registration. All codes
N7JC Russell Owen
VANS RV-9A
Fixed-wing, single engine Jcmc INC
Junction City, Kansas
Experimental 2013-08-01 ValidFAA registration status code V: Valid registration. All codes
N63DM Meadows Denny
PITTS SPECIAL
Fixed-wing, single engine Individual owner
Ohio
Experimental 2013-07-31 ValidFAA registration status code V: Valid registration. All codes
N73151 Cessna
172M
Fixed-wing, single engine Hawaii Aviators LLC
Ewa Beach, Hawaii
Standard 2013-07-31 ValidFAA registration status code V: Valid registration. All codes
N739WB Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2013-07-31 ValidFAA registration status code V: Valid registration. All codes
N84392 Cessna
172K
Fixed-wing, single engine Romeo Flying Club LLC
Leonard, Michigan
Standard 2013-07-31 ValidFAA registration status code V: Valid registration. All codes
N369SR Robinson Helicopter
R22 MARINER
Helicopter Chopper Shots LLC
West Bath, Maine
Standard 2013-07-30 ValidFAA registration status code V: Valid registration. All codes
N53DT Deane William F
VANS RV-9A
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2013-07-30 ValidFAA registration status code V: Valid registration. All codes
N88233 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Vermont
Standard 2013-07-30 ValidFAA registration status code V: Valid registration. All codes
N8937V Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2013-07-30 ValidFAA registration status code V: Valid registration. All codes
N6100J Piper
PA-28-151
Fixed-wing, single engine Franklin County Flying Club INC
Turners Falls, Massachusetts
Standard 2013-07-29 ValidFAA registration status code V: Valid registration. All codes
N3045C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2013-07-26 ValidFAA registration status code V: Valid registration. All codes
N2246E Cessna
172N
Fixed-wing, single engine Co-owned owner
New Jersey
Standard 2013-07-25 ValidFAA registration status code V: Valid registration. All codes
N2819L Irwin Wayne R
THORP T-18
Fixed-wing, single engine Individual owner
Illinois
Experimental 2013-07-25 ValidFAA registration status code V: Valid registration. All codes
N60NA Piper
PA-28-161
Fixed-wing, single engine Hampden Aviation Services INC
Northampton, Massachusetts
Standard 2013-07-25 ValidFAA registration status code V: Valid registration. All codes
N79004 Cessna
172K
Fixed-wing, single engine Individual owner
Idaho
Standard 2013-07-25 ValidFAA registration status code V: Valid registration. All codes
N733DX Cessna
172N
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2013-07-24 ValidFAA registration status code V: Valid registration. All codes
N9058D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2013-07-24 ValidFAA registration status code V: Valid registration. All codes
N80985 Cessna
172M
Fixed-wing, single engine Individual owner
Tennessee
Standard 2013-07-23 ValidFAA registration status code V: Valid registration. All codes
N880HC Robinson Helicopter
R22 BETA
Helicopter Badger Heli CORP
Wilmington, Delaware
Standard 2013-07-23 ValidFAA registration status code V: Valid registration. All codes
N19WD Davis William R Jr
RV-6 VANS
Fixed-wing, single engine Individual owner
New York
Experimental 2013-07-22 ValidFAA registration status code V: Valid registration. All codes
N5408H Cessna
172M
Fixed-wing, single engine Schmidt Kelly D
Lake Elmo, Minnesota
Standard 2013-07-22 ValidFAA registration status code V: Valid registration. All codes
N5467S Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2013-07-22 ValidFAA registration status code V: Valid registration. All codes
N6918W Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2013-07-22 ValidFAA registration status code V: Valid registration. All codes
N269CJ Cessna
172L
Fixed-wing, single engine Individual owner
South Dakota
Standard 2013-07-18 ValidFAA registration status code V: Valid registration. All codes
N8200Z Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2013-07-18 ValidFAA registration status code V: Valid registration. All codes
N21517 Cessna
172M
Fixed-wing, single engine Individual owner
Iowa
Standard 2013-07-17 ValidFAA registration status code V: Valid registration. All codes
N4285Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2013-07-17 ValidFAA registration status code V: Valid registration. All codes
N9700H Cessna
172M
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2013-07-17 ValidFAA registration status code V: Valid registration. All codes
N345AR Cessna
172P
Fixed-wing, single engine Ohio University
Albany, Ohio
Standard 2013-07-16 ValidFAA registration status code V: Valid registration. All codes
N7254F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2013-07-16 ValidFAA registration status code V: Valid registration. All codes
N9023L Champion
7GCBC
Fixed-wing, single engine Co-owned owner
Washington
Standard 2013-07-15 ValidFAA registration status code V: Valid registration. All codes
N75931 Cessna
172N
Fixed-wing, single engine Individual owner
Utah
Standard 2013-07-11 ValidFAA registration status code V: Valid registration. All codes
N9811U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Colorado
Standard 2013-07-10 ValidFAA registration status code V: Valid registration. All codes
N2875B Piper
PA-28-161
Fixed-wing, single engine Ras Aviation LLC
Elyria, Ohio
Standard 2013-07-09 ValidFAA registration status code V: Valid registration. All codes
N4363R Cessna
172M
Fixed-wing, single engine Sky Walker Flight School LLC
Adrian, Michigan
Standard 2013-07-09 ValidFAA registration status code V: Valid registration. All codes
N3981K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Delaware
Standard 2013-07-08 ValidFAA registration status code V: Valid registration. All codes
N734EZ Cessna
172N
Fixed-wing, single engine Individual owner
Idaho
Standard 2013-07-08 ValidFAA registration status code V: Valid registration. All codes
N4475J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2013-07-05 ValidFAA registration status code V: Valid registration. All codes
N4637G Cessna
172N
Fixed-wing, single engine Above All Aviation INC
Santa Barbara, California
Standard 2013-07-05 ValidFAA registration status code V: Valid registration. All codes
N75837 Cessna
172N
Fixed-wing, single engine Individual owner
Indiana
Standard 2013-07-05 ValidFAA registration status code V: Valid registration. All codes
N7422G Cessna
172K
Fixed-wing, single engine Lafayette Escadrille Flying Club
Rock Spring, Georgia
Standard 2013-07-03 ValidFAA registration status code V: Valid registration. All codes
N8383T Piper
PA-28-161
Fixed-wing, single engine Individual owner
Illinois
Standard 2013-07-01 ValidFAA registration status code V: Valid registration. All codes
N8479F Piper
PA-28-151
Fixed-wing, single engine Dubois County Airport Authority
Huntingburg, Indiana
Standard 2013-07-01 ValidFAA registration status code V: Valid registration. All codes
N737TJ Cessna
172N
Fixed-wing, single engine Stanislaus County Sheriffs Department
Modesto, California
Standard 2013-06-28 ValidFAA registration status code V: Valid registration. All codes
N4764D Cessna
172N
Fixed-wing, single engine Quadrelec Engineering CORP
Tulsa, Oklahoma
Standard 2013-06-27 ValidFAA registration status code V: Valid registration. All codes
N5248T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kansas
Standard 2013-06-27 ValidFAA registration status code V: Valid registration. All codes
N755MA Piper
J-3
Fixed-wing, single engine Mills Air Service INC
Marstons Mills, Massachusetts
Restricted 2013-06-27 ValidFAA registration status code V: Valid registration. All codes
N7686F Piper
PA-28-151
Fixed-wing, single engine Baremor Terry A
Brooklyn Park, Minnesota
Standard 2013-06-27 ValidFAA registration status code V: Valid registration. All codes
N20238 Cessna
172M
Fixed-wing, single engine Co-owned owner
New York
Standard 2013-06-26 ValidFAA registration status code V: Valid registration. All codes
N733VR Cessna
172N
Fixed-wing, single engine Legends Air Center LLC
Bentonville, Arkansas
Standard 2013-06-26 ValidFAA registration status code V: Valid registration. All codes
N737DV Cessna
172N
Fixed-wing, single engine Superior Flying Services LLC
Superior, Wisconsin
Standard 2013-06-26 ValidFAA registration status code V: Valid registration. All codes
N5361K Cessna
172P
Fixed-wing, single engine Long Island Soaring Association
Shirley, New York
Standard 2013-06-25 ValidFAA registration status code V: Valid registration. All codes
N8289A Piper
PA-28-161
Fixed-wing, single engine Aircraft Guaranty CORP Trustee
Oklahoma City, Oklahoma
Standard 2013-06-25 ValidFAA registration status code V: Valid registration. All codes
N8983V Cessna
172M
Fixed-wing, single engine Individual owner
Louisiana
Standard 2013-06-25 ValidFAA registration status code V: Valid registration. All codes
N32DM Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Arizona
Standard 2013-06-24 ValidFAA registration status code V: Valid registration. All codes
N63GS Colquitt Joseph Arlington
GLASTAR
Fixed-wing, single engine Aerial Surveys INC
Dover, Delaware
Experimental 2013-06-24 ValidFAA registration status code V: Valid registration. All codes
N3860X Aero Commander
100
Fixed-wing, single engine Overall Aviators LLC
Parsons, Kansas
Standard 2013-06-19 ValidFAA registration status code V: Valid registration. All codes
N73498 Cessna
172M
Fixed-wing, single engine 14A Flying Club INC
Mooresville, North Carolina
Standard 2013-06-19 ValidFAA registration status code V: Valid registration. All codes
N20516 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2013-06-18 ValidFAA registration status code V: Valid registration. All codes
N703SP Cessna
172P
Fixed-wing, single engine Flightline LLC
Lewes, Delaware
Standard 2013-06-18 ValidFAA registration status code V: Valid registration. All codes
N8445L Cessna
172I
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2013-06-18 ValidFAA registration status code V: Valid registration. All codes
N55551 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2013-06-17 ValidFAA registration status code V: Valid registration. All codes
N1187U Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2013-06-14 ValidFAA registration status code V: Valid registration. All codes
N5344D Cessna
172N
Fixed-wing, single engine Airgo INC
Centralia, Illinois
Standard 2013-06-14 ValidFAA registration status code V: Valid registration. All codes
N8839D Piper
PA-22S-160
Fixed-wing, single engine Individual owner
Louisiana
Standard 2013-06-14 ValidFAA registration status code V: Valid registration. All codes
N1169A Piper
PA-18-125
Fixed-wing, single engine K-Air Service LLC
Gakona, Alaska
Restricted 2013-06-13 ValidFAA registration status code V: Valid registration. All codes
N43017 Piper
PA-28-151
Fixed-wing, single engine Conn Farms INC
Jeffersonville, Ohio
Standard 2013-06-13 ValidFAA registration status code V: Valid registration. All codes
N61856 Cessna
172M
Fixed-wing, single engine Paraclete Sky Adventures LLC
Raeford, North Carolina
Standard 2013-06-13 ValidFAA registration status code V: Valid registration. All codes
N7041G Cessna
172K
Fixed-wing, single engine Individual owner
North Dakota
Standard 2013-06-13 ValidFAA registration status code V: Valid registration. All codes
N30PM Mcreynolds
RV-4
Fixed-wing, single engine Individual owner
South Dakota
Experimental 2013-06-12 ValidFAA registration status code V: Valid registration. All codes
N7999G Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2013-06-10 ValidFAA registration status code V: Valid registration. All codes
N91673 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2013-06-10 ValidFAA registration status code V: Valid registration. All codes
N1756J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2013-06-06 ValidFAA registration status code V: Valid registration. All codes
N20858 Cessna
172M
Fixed-wing, single engine Vintage Flyers INC
Napa, California
Standard 2013-06-06 ValidFAA registration status code V: Valid registration. All codes
N54094 Cessna
172P
Fixed-wing, single engine Mustang Sally Aviation LLC
Camden, South Carolina
Standard 2013-06-06 ValidFAA registration status code V: Valid registration. All codes
N3883Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2013-06-05 ValidFAA registration status code V: Valid registration. All codes
N53759 Cessna
172P
Fixed-wing, single engine Pacific Lease
Elk Grove, California
Standard 2013-06-05 ValidFAA registration status code V: Valid registration. All codes
N1411U Cessna
172M
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2013-06-04 ValidFAA registration status code V: Valid registration. All codes
N32204 Piper
PA-28-151
Fixed-wing, single engine Flying Country Club INC
Coal Valley, Illinois
Standard 2013-06-04 ValidFAA registration status code V: Valid registration. All codes
N4455X Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
California
Standard 2013-06-04 ValidFAA registration status code V: Valid registration. All codes
N83622 Piper
PA-18-150
Fixed-wing, single engine Trans Crafts LLC
Big Lake, Alaska
Standard 2013-06-04 ValidFAA registration status code V: Valid registration. All codes
N9929P Piper
PA-18-150
Fixed-wing, single engine Individual owner
New Mexico
Standard 2013-06-04 ValidFAA registration status code V: Valid registration. All codes
N2EG Garner
TOOT
Fixed-wing, single engine Individual owner
Nebraska
Experimental 2013-06-03 ValidFAA registration status code V: Valid registration. All codes
N5877F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Michigan
Standard 2013-06-03 ValidFAA registration status code V: Valid registration. All codes
N5981S Beech
A23-19
Fixed-wing, single engine Individual owner
Virginia
Standard 2013-06-03 ValidFAA registration status code V: Valid registration. All codes
N336RA S.O.C.A.T.A.
RALLYE 150 ST
Fixed-wing, single engine Individual owner
Virginia
Standard 2013-05-31 ValidFAA registration status code V: Valid registration. All codes
N4480R Cessna
172M
Fixed-wing, single engine Southeastern Minnesota Flying Club INC
Rochester, Minnesota
Standard 2013-05-30 ValidFAA registration status code V: Valid registration. All codes
N78857 Cessna
172K
Fixed-wing, single engine Individual owner
Colorado
Standard 2013-05-29 ValidFAA registration status code V: Valid registration. All codes
N922EA Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Multiple 2013-05-29 ValidFAA registration status code V: Valid registration. All codes
N3155T Cessna
177
Fixed-wing, single engine Co-owned owner
Montana
Standard 2013-05-28 ValidFAA registration status code V: Valid registration. All codes
N317LB Piper
PA-28-140
Fixed-wing, single engine Trail of 140 Tears LLC
Bozeman, Montana
Standard 2013-05-28 ValidFAA registration status code V: Valid registration. All codes
N43693 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Vermont
Standard 2013-05-28 ValidFAA registration status code V: Valid registration. All codes
N9690V Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2013-05-28 ValidFAA registration status code V: Valid registration. All codes
N2112P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Texas
Standard 2013-05-24 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 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.