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
N900JK Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2017-05-19 ValidFAA registration status code V: Valid registration. All codes
N110AU Cessna
172M
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2017-05-18 ValidFAA registration status code V: Valid registration. All codes
N20601 Cessna
172M
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2017-05-18 ValidFAA registration status code V: Valid registration. All codes
N3780Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2017-05-18 ValidFAA registration status code V: Valid registration. All codes
N4091P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Washington
Standard 2017-05-18 ValidFAA registration status code V: Valid registration. All codes
N64477 Cessna
172M
Fixed-wing, single engine Rico Aviation Services INC
Miami, Florida
Standard 2017-05-18 ValidFAA registration status code V: Valid registration. All codes
N6691W Piper
PA-28-140
Fixed-wing, single engine N6691W LLC
Nazareth, Pennsylvania
Standard 2017-05-18 ValidFAA registration status code V: Valid registration. All codes
N9869G Cessna
172L
Fixed-wing, single engine Individual owner
New York
Standard 2017-05-18 ValidFAA registration status code V: Valid registration. All codes
N221HG Robinson Helicopter
R22 BETA
Helicopter Higher Ground Helicopters of Cincinnati LLC
Miamisburg, Ohio
Standard 2017-05-17 ValidFAA registration status code V: Valid registration. All codes
N601FT Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2017-05-17 ValidFAA registration status code V: Valid registration. All codes
N811EB Cecil E Banks Jr
RV 7A
Fixed-wing, single engine Individual owner
Nevada
Experimental 2017-05-17 ValidFAA registration status code V: Valid registration. All codes
N83328 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Maine
Restricted 2017-05-17 ValidFAA registration status code V: Valid registration. All codes
N9832W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2017-05-17 ValidFAA registration status code V: Valid registration. All codes
N1974P Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2017-05-16 ValidFAA registration status code V: Valid registration. All codes
N21015 Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-05-16 ValidFAA registration status code V: Valid registration. All codes
N25278 Socata
TAMPICO TB 9C
Fixed-wing, single engine Individual owner
Arizona
Standard 2017-05-16 ValidFAA registration status code V: Valid registration. All codes
N5178W Piper
PA-28-160
Fixed-wing, single engine Mahoney Christopher P
Quakertown, Pennsylvania
Standard 2017-05-16 ValidFAA registration status code V: Valid registration. All codes
N6742J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2017-05-16 ValidFAA registration status code V: Valid registration. All codes
N79417 Cessna
172K
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2017-05-16 ValidFAA registration status code V: Valid registration. All codes
N2804Z Bellanca
8KCAB
Fixed-wing, single engine Individual owner
California
Standard 2017-05-15 ValidFAA registration status code V: Valid registration. All codes
N642SA Symphony Aircraft Ind Inc
SA 160
Fixed-wing, single engine Flying Time LLP
Fort Mill, South Carolina
Standard 2017-05-15 ValidFAA registration status code V: Valid registration. All codes
N757C Jasen Paul W
GLASTAR
Fixed-wing, single engine Individual owner
California
Experimental 2017-05-15 ValidFAA registration status code V: Valid registration. All codes
N883M Piper
PA-28-140
Fixed-wing, single engine Individual owner
Maryland
Standard 2017-05-15 ValidFAA registration status code V: Valid registration. All codes
N1002M Cessna
172L
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-05-12 ValidFAA registration status code V: Valid registration. All codes
N1390R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
California
Standard 2017-05-12 ValidFAA registration status code V: Valid registration. All codes
N5366F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Missouri
Standard 2017-05-12 ValidFAA registration status code V: Valid registration. All codes
N74967 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wyoming
Standard 2017-05-12 ValidFAA registration status code V: Valid registration. All codes
N278Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2017-05-11 ValidFAA registration status code V: Valid registration. All codes
N4281J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2017-05-11 ValidFAA registration status code V: Valid registration. All codes
N5127H Cessna
172M
Fixed-wing, single engine Individual owner
South Dakota
Standard 2017-05-11 ValidFAA registration status code V: Valid registration. All codes
N5332S Piper
PA-28-140
Fixed-wing, single engine Nimmons Johnny
Brookshire, Texas
Standard 2017-05-11 ValidFAA registration status code V: Valid registration. All codes
N572RJ Cessna
172M
Fixed-wing, single engine University of Michigan Flyers INC
Ann Arbor, Michigan
Standard 2017-05-11 ValidFAA registration status code V: Valid registration. All codes
N5915W Piper
PA-28-160
Fixed-wing, single engine Individual owner
South Dakota
Standard 2017-05-11 ValidFAA registration status code V: Valid registration. All codes
N7989H Robinson Helicopter
R22 BETA
Helicopter Jtc Aviation LLC
Nashville, Tennessee
Standard 2017-05-11 ValidFAA registration status code V: Valid registration. All codes
N272JA Cessna
172M
Fixed-wing, single engine Gold Coast Aviation LLC
Oxnard, California
Standard 2017-05-10 ValidFAA registration status code V: Valid registration. All codes
N5366J Cessna
172N
Fixed-wing, single engine Slipstream Aviation LLC
Calera, Alabama
Standard 2017-05-10 ValidFAA registration status code V: Valid registration. All codes
N6024W Piper
PA-28-140
Fixed-wing, single engine White Pelican LLC
Union City, Tennessee
Standard 2017-05-10 ValidFAA registration status code V: Valid registration. All codes
N6062A Piper
PA-18-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2017-05-10 ValidFAA registration status code V: Valid registration. All codes
N733AW Cessna
172N
Fixed-wing, single engine Individual owner
Indiana
Standard 2017-05-10 ValidFAA registration status code V: Valid registration. All codes
N15446 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Montana
Standard 2017-05-09 ValidFAA registration status code V: Valid registration. All codes
N21BW Blessing/Hodo
PITTS S1-C
Fixed-wing, single engine Quonset Technology LLC DBA
North Kingstown, Rhode Island
Experimental 2017-05-09 ValidFAA registration status code V: Valid registration. All codes
N41650 Piper
PA-28-151
Fixed-wing, single engine Airmotive Service LLC
Brigham City, Utah
Standard 2017-05-09 ValidFAA registration status code V: Valid registration. All codes
N5154R Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2017-05-09 ValidFAA registration status code V: Valid registration. All codes
N5659W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-05-09 ValidFAA registration status code V: Valid registration. All codes
N64134 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2017-05-09 ValidFAA registration status code V: Valid registration. All codes
N827JH Huls James J
RV-4
Fixed-wing, single engine Co-owned owner
South Dakota
Experimental 2017-05-09 ValidFAA registration status code V: Valid registration. All codes
N98357 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2017-05-09 ValidFAA registration status code V: Valid registration. All codes
N1688V Cessna
172M
Fixed-wing, single engine Avstem Incorporated
Mc Grath, Alaska
Standard 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N272WC Cessna
172N
Fixed-wing, single engine Candace A Larned Enterprises INC
Long Beach, California
Standard 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N410SA Laurel Air Club Inc
RV-3A
Fixed-wing, single engine Individual owner
North Dakota
Experimental 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N4202J Piper
PA-28-140
Fixed-wing, single engine Parker Aviation LLC
Camdenton, Missouri
Standard 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N7477L Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N8486L Cessna
172I
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N92810 Cessna
172M
Fixed-wing, single engine Individual owner
North Dakota
Standard 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N9944Q Cessna
172M
Fixed-wing, single engine Skywarrior Flight Training INC
Pensacola, Florida
Standard 2017-05-08 ValidFAA registration status code V: Valid registration. All codes
N44646 Piper
PA-28-151
Fixed-wing, single engine Individual owner
West Virginia
Standard 2017-05-05 ValidFAA registration status code V: Valid registration. All codes
N9968W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2017-05-05 ValidFAA registration status code V: Valid registration. All codes
N33648 Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-05-04 ValidFAA registration status code V: Valid registration. All codes
N4140X Aero Commander
100
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-05-04 ValidFAA registration status code V: Valid registration. All codes
N5264W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Texas
Standard 2017-05-04 ValidFAA registration status code V: Valid registration. All codes
N5268R Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2017-05-04 ValidFAA registration status code V: Valid registration. All codes
N6047L American
AA-5
Fixed-wing, single engine Individual owner
California
Standard 2017-05-04 ValidFAA registration status code V: Valid registration. All codes
N75621 Cessna
172N
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2017-05-04 ValidFAA registration status code V: Valid registration. All codes
N7684F Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2017-05-04 ValidFAA registration status code V: Valid registration. All codes
N150BK Cessna
150J
Fixed-wing, single engine Tribec INC
Medina, Ohio
Standard 2017-05-03 ValidFAA registration status code V: Valid registration. All codes
N8714N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2017-05-03 ValidFAA registration status code V: Valid registration. All codes
N91QA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2017-05-03 ValidFAA registration status code V: Valid registration. All codes
N1174P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Texas
Standard 2017-05-02 ValidFAA registration status code V: Valid registration. All codes
N2364T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2017-05-02 ValidFAA registration status code V: Valid registration. All codes
N51793 Cessna
172P
Fixed-wing, single engine Individual owner
Texas
Standard 2017-05-02 ValidFAA registration status code V: Valid registration. All codes
N7692Y Piper
PA-30
Fixed-wing, multi-engine Aloof Aviation LLC
Denver, Colorado
Standard 2017-05-02 ValidFAA registration status code V: Valid registration. All codes
N85KW Gee Walter R
RUTAN LONG E-Z
Fixed-wing, single engine N85Kw LLC
Avon, Indiana
Experimental 2017-05-02 ValidFAA registration status code V: Valid registration. All codes
N8721V Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Florida
Standard 2017-05-02 ValidFAA registration status code V: Valid registration. All codes
N232SQ Kosta Michael J
VANS RV-4
Fixed-wing, single engine Individual owner
Colorado
Experimental 2017-05-01 ValidFAA registration status code V: Valid registration. All codes
N3455E Cessna
172N
Fixed-wing, single engine Silverhawk Aviation Academy LLC
Caldwell, Idaho
Standard 2017-05-01 ValidFAA registration status code V: Valid registration. All codes
N7551G Cessna
172L
Fixed-wing, single engine Nb Airdoc LLC
Aventura, Florida
Standard 2017-05-01 ValidFAA registration status code V: Valid registration. All codes
N76053 Cessna
172N
Fixed-wing, single engine Ape LLC
Birmingham, Alabama
Standard 2017-05-01 ValidFAA registration status code V: Valid registration. All codes
N78179 Cessna
172K
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2017-05-01 ValidFAA registration status code V: Valid registration. All codes
N43568 Piper
PA-28-151
Fixed-wing, single engine Wings Aviators LLC
Valparaiso, Indiana
Multiple 2017-04-28 ValidFAA registration status code V: Valid registration. All codes
N7077J Frew John M
THORP T-18
Fixed-wing, single engine Individual owner
Ohio
Experimental 2017-04-28 ValidFAA registration status code V: Valid registration. All codes
N22JS Saxon
PITTS SPECIAL S-1
Fixed-wing, single engine Co-owned owner
Alabama
Experimental 2017-04-27 ValidFAA registration status code V: Valid registration. All codes
N4140J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2017-04-27 ValidFAA registration status code V: Valid registration. All codes
N46540 Cessna
172K
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2017-04-27 ValidFAA registration status code V: Valid registration. All codes
N6343D Cessna
172N
Fixed-wing, single engine Air One Aircraft LLC
Portage Des Sioux, Missouri
Standard 2017-04-27 ValidFAA registration status code V: Valid registration. All codes
N6786J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2017-04-27 ValidFAA registration status code V: Valid registration. All codes
N7169J Grigsby Earl C
WITTMAN W-10
Fixed-wing, single engine Co-owned owner
Oklahoma
Experimental 2017-04-27 ValidFAA registration status code V: Valid registration. All codes
N737PW Cessna
172N
Fixed-wing, single engine Region Flyers LLC
Valparaiso, Indiana
Standard 2017-04-27 ValidFAA registration status code V: Valid registration. All codes
N8856L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Florida
Standard 2017-04-27 ValidFAA registration status code V: Valid registration. All codes
N26TP Cessna
177
Fixed-wing, single engine Global Aerials INC
Pembroke Pines, Florida
Standard 2017-04-26 ValidFAA registration status code V: Valid registration. All codes
N495TM Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-04-26 ValidFAA registration status code V: Valid registration. All codes
N504EM Murray Eugene L
RV-8
Fixed-wing, single engine Individual owner
Iowa
Experimental 2017-04-26 ValidFAA registration status code V: Valid registration. All codes
N6068W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
West Virginia
Standard 2017-04-26 ValidFAA registration status code V: Valid registration. All codes
N6333F Cessna
172N
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2017-04-26 ValidFAA registration status code V: Valid registration. All codes
N787MT Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2017-04-26 ValidFAA registration status code V: Valid registration. All codes
N84153 Cessna
172K
Fixed-wing, single engine Spirit Air INC
Salmon, Idaho
Standard 2017-04-26 ValidFAA registration status code V: Valid registration. All codes
N8633E Piper
PA-28-140
Fixed-wing, single engine Pompano Senior Squadron Flying Club INC
Pompano Beach, Florida
Standard 2017-04-26 ValidFAA registration status code V: Valid registration. All codes
N2500P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2017-04-25 ValidFAA registration status code V: Valid registration. All codes
N2842X Cessna
177
Fixed-wing, single engine Individual owner
Texas
Standard 2017-04-25 ValidFAA registration status code V: Valid registration. All codes
N5457E Cessna
172N
Fixed-wing, single engine Individual owner
Indiana
Standard 2017-04-25 ValidFAA registration status code V: Valid registration. All codes
N7017Q Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2017-04-25 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.