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
N56723 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N65295 Cessna
172P
Fixed-wing, single engine Northwoods Air LLC
Orono, Maine
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N6876H Cessna
172M
Fixed-wing, single engine St Charles County Flying Club LLC
Portage Des Sioux, Missouri
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N739YU Cessna
172N
Fixed-wing, single engine Rrrr Aviation LLC
Bryan, Texas
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N8263J Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N8559V Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Texas
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N8704V Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Washington
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N9062L Champion
7GCAA
Fixed-wing, single engine R & B Helicopters INC
Calhoun, Georgia
Restricted 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N90971 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N9398D Piper
PA-18-150
Fixed-wing, single engine Alpenglow Air LLC
Anchorage, Alaska
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N9731H Cessna
172M
Fixed-wing, single engine Creative Strategies INC
Proctorville, Ohio
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N106GT Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N1144M Cessna
172L
Fixed-wing, single engine Ccr Aviation LLC
Kalispell, Montana
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N166WD Dewinter David L
RV-6
Fixed-wing, single engine Tnl Management LLC
Cullman, Alabama
Experimental 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N2233P Piper
PA-23
Fixed-wing, multi-engine Aeroplanes Over Idaho
Caldwell, Idaho
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N26292 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N32837 Piper
PA-28-140
Fixed-wing, single engine Arias Aviation LLC
Hazle Township, Pennsylvania
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N46143 Cessna
172I
Fixed-wing, single engine Individual owner
North Dakota
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N5177F Piper
PA-28-151
Fixed-wing, single engine Pray Aviation INC
Augusta, Kansas
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N5951U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N82058 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Arkansas
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N8405R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2023-06-27 ValidFAA registration status code V: Valid registration. All codes
N405FL Piper
PA-28-140
Fixed-wing, single engine Riggin Flight Service INC
Madison, South Dakota
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N52341 Cessna
172P
Fixed-wing, single engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N5260K Cessna
172P
Fixed-wing, single engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N52953 Cessna
172P
Fixed-wing, single engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N54015 Cessna
172P
Fixed-wing, single engine Northwoods Air LLC
Orono, Maine
Multiple 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N54803 Cessna
172P
Fixed-wing, single engine Northwoods Air LLC
Orono, Maine
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N6620D Cessna
172N
Fixed-wing, single engine Pacific Fleet Aviation LLC
Rochester, New York
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N7304J Piper
PA-28-140
Fixed-wing, single engine Adk Flying Club INC
Ballston Spa, New York
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N738JT Cessna
172N
Fixed-wing, single engine Northwoods Air LLC
Orono, Maine
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N78652 Cessna
172K
Fixed-wing, single engine Manning and Sons Property LLC
Summerville, South Carolina
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N9177D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Washington
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N9356H Cessna
172M
Fixed-wing, single engine Quad Cities Aero LLC
Bettendorf, Iowa
Standard 2023-06-26 ValidFAA registration status code V: Valid registration. All codes
N234JC Piper
PA-28-151
Fixed-wing, single engine L&L Air LLC
Cave Creek, Arizona
Standard 2023-06-25 ValidFAA registration status code V: Valid registration. All codes
N1870T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2023-06-24 ValidFAA registration status code V: Valid registration. All codes
N19766 Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2023-06-24 ValidFAA registration status code V: Valid registration. All codes
N50630 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-06-24 ValidFAA registration status code V: Valid registration. All codes
N5120W Piper
PA-28
Fixed-wing, single engine Seasons of Life Publications LLC
Greenville, South Carolina
Standard 2023-06-24 ValidFAA registration status code V: Valid registration. All codes
N6244J Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2023-06-24 ValidFAA registration status code V: Valid registration. All codes
N737RL Cessna
172N
Fixed-wing, single engine General Aviation LLC
Henderson, Nevada
Standard 2023-06-24 ValidFAA registration status code V: Valid registration. All codes
N9588D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-06-24 ValidFAA registration status code V: Valid registration. All codes
N1922P Piper
PA-22
Fixed-wing, single engine Individual owner
Hawaii
Standard 2023-06-23 ValidFAA registration status code V: Valid registration. All codes
N5609L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-06-23 ValidFAA registration status code V: Valid registration. All codes
N733FU Cessna
172N
Fixed-wing, single engine Simplifly LLC
Mesa, Arizona
Standard 2023-06-23 ValidFAA registration status code V: Valid registration. All codes
N78KV Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Shore Dog Aviation LLC
Dover, Delaware
Standard 2023-06-23 ValidFAA registration status code V: Valid registration. All codes
N815EH Robinson Helicopter
R22 BETA
Helicopter Individual owner
Texas
Standard 2023-06-23 ValidFAA registration status code V: Valid registration. All codes
N28RA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N4170P Piper
PA-23-160
Fixed-wing, multi-engine Ifa Aviation INC
Wilmington, Delaware
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N46028 Cessna
172I
Fixed-wing, single engine First Take Aviation LLC
Van Nuys, California
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N551PA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N609FT Piper
PA-28-161
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N621FT Piper
PA-28-161
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N624FT Piper
PA-28-161
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N625FT Piper
PA-28-161
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N627FT Piper
PA-28-161
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N629FT Piper
PA-28-161
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N6337D Cessna
172N
Fixed-wing, single engine Homerace INC DBA
Tulsa, Oklahoma
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N728DF Feight Donald P
GLASAIR RG SH-2R
Fixed-wing, single engine Explore Helicopters LLC
Lexington, Alabama
Experimental 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N9585D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N9883G Cessna
172L
Fixed-wing, single engine Individual owner
North Dakota
Standard 2023-06-22 ValidFAA registration status code V: Valid registration. All codes
N123ZA Cessna
172L
Fixed-wing, single engine Flying Colors Airparts INC
Leesburg, Florida
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N30033 Cessna
177
Fixed-wing, single engine Mission Aviation Training Academy
Arlington, Washington
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N3906P Piper
PA-22
Fixed-wing, single engine Jb Efta Farms INC
Argyle, Minnesota
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N3975K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Connecticut
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N5454L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
California
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N602FT Piper
PA-28-161
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N631FT Piper
PA-28-161
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N6565J Cessna
172N
Fixed-wing, single engine Taylor Aviation of Seminole Ok LLC
Seminole, Oklahoma
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N7914G Cessna
172L
Fixed-wing, single engine Kai Aviation LLC
San Jose, California
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N8183D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wisconsin
Restricted 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N83882 Piper
PA-28-161
Fixed-wing, single engine Warrior 83882 LLC
Dover, Delaware
Standard 2023-06-21 ValidFAA registration status code V: Valid registration. All codes
N1295A Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N1356F Cessna
172N
Fixed-wing, single engine Jprg Aviation INC
Orlando, Florida
Standard 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N211DM Robinson Helicopter
R22 BETA
Helicopter Individual owner
Texas
Standard 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N3270Z Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N4859F Cessna
172N
Fixed-wing, single engine Individual owner
Colorado
Standard 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N518SW Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Washington
Standard 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N628AT Dodgion Gary Robert
VANS RV6A
Fixed-wing, single engine Individual owner
Colorado
Experimental 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N6510T Beech
19A
Fixed-wing, single engine Individual owner
Idaho
Standard 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N738WR Cessna
172N
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-06-20 ValidFAA registration status code V: Valid registration. All codes
N12473 Cessna
172M
Fixed-wing, single engine Vero Technical Support INC
Pensacola, Florida
Standard 2023-06-19 ValidFAA registration status code V: Valid registration. All codes
N1979W Beech
B19
Fixed-wing, single engine Individual owner
Iowa
Standard 2023-06-19 ValidFAA registration status code V: Valid registration. All codes
N3378E Cessna
172N
Fixed-wing, single engine Visalia Flyers LLC
Visalia, California
Standard 2023-06-19 ValidFAA registration status code V: Valid registration. All codes
N47409 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-06-19 ValidFAA registration status code V: Valid registration. All codes
N5891W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-06-19 ValidFAA registration status code V: Valid registration. All codes
N6901Q Beech
A23-19
Fixed-wing, single engine Cbus Flight LLC
Pickerington, Ohio
Standard 2023-06-19 ValidFAA registration status code V: Valid registration. All codes
N85MP Robinson Helicopter
R22 BETA
Helicopter Individual owner
Oklahoma
Standard 2023-06-19 ValidFAA registration status code V: Valid registration. All codes
N9641Q Cessna
172M
Fixed-wing, single engine Bhairavi Aviation LLC
Santa Clarita, California
Standard 2023-06-19 ValidFAA registration status code V: Valid registration. All codes
N9665Q Cessna
172M
Fixed-wing, single engine Alldredge Aviation
Auburn, Washington
Standard 2023-06-19 ValidFAA registration status code V: Valid registration. All codes
N20JP Barchfeld J P
BARCHFELD
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-06-18 ValidFAA registration status code V: Valid registration. All codes
N83MT Van Eaton Leonard W
COZY
Fixed-wing, single engine Individual owner
Illinois
Experimental 2023-06-18 ValidFAA registration status code V: Valid registration. All codes
N1374E Cessna
172N
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2023-06-17 ValidFAA registration status code V: Valid registration. All codes
N29ER Cessna
172N
Fixed-wing, single engine Costa Air Service LLC
Painted Post, New York
Standard 2023-06-17 ValidFAA registration status code V: Valid registration. All codes
N3008F Piper
PA-28-161
Fixed-wing, single engine Individual owner
South Carolina
Standard 2023-06-17 ValidFAA registration status code V: Valid registration. All codes
N50WR Piper
PA-28-161
Fixed-wing, single engine Paphos Airways LLC
Farmingdale, New York
Standard 2023-06-17 ValidFAA registration status code V: Valid registration. All codes
N5674B Sever Florian
RV-4
Fixed-wing, single engine Individual owner
Oregon
Experimental 2023-06-17 ValidFAA registration status code V: Valid registration. All codes
N5910D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-06-17 ValidFAA registration status code V: Valid registration. All codes
N592DJ Berry D G/Berry J A
BERRY HATZ CB-1
Fixed-wing, single engine Fandango Ranch Operating CO INC
Anacortes, Washington
Experimental 2023-06-17 ValidFAA registration status code V: Valid registration. All codes
N8061C Piper
PA-18A-135
Fixed-wing, single engine Cape May Aerial Advertising LLC
Rio Grande, New Jersey
Restricted 2023-06-17 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.