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
N5861D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-07-14 ValidFAA registration status code V: Valid registration. All codes
N747VH Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2023-07-14 ValidFAA registration status code V: Valid registration. All codes
N75078 Piper
PA-28-151
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-07-14 ValidFAA registration status code V: Valid registration. All codes
N15359 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-07-13 ValidFAA registration status code V: Valid registration. All codes
N19866 Cessna
172M
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2023-07-13 ValidFAA registration status code V: Valid registration. All codes
N2946T Aero Commander
100
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2023-07-13 ValidFAA registration status code V: Valid registration. All codes
N733WY Cessna
172N
Fixed-wing, single engine Flys and Floats C172 LLC
Panama City Beach, Florida
Standard 2023-07-13 ValidFAA registration status code V: Valid registration. All codes
N2698P Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Louisiana
Multiple 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N29459 Cessna
177
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N333LS Cessna
172N
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N52432 Cessna
172P
Fixed-wing, single engine Aftcloud INC
Ontario, California
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N5720E Cessna
172N
Fixed-wing, single engine Install Pro Construction LLC
Henderson, Nevada
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N5723F Piper
PA-28-140
Fixed-wing, single engine Odyssia LLC
Corpus Christi, Texas
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N7215Q Cessna
172L
Fixed-wing, single engine Rhynette Airways LLC
Key Largo, Florida
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N7375C Piper
PA-28-140
Fixed-wing, single engine Erick Enterprises LLC
Spreckels, California
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N8980V Cessna
172M
Fixed-wing, single engine Sweitz-Air INC
Stewartstown, Pennsylvania
Standard 2023-07-12 ValidFAA registration status code V: Valid registration. All codes
N1391U Cessna
172M
Fixed-wing, single engine Arctic Winds INC
King Salmon, Alaska
Standard 2023-07-11 ValidFAA registration status code V: Valid registration. All codes
N2343L Beech
23
Fixed-wing, single engine Individual owner
South Carolina
Standard 2023-07-11 ValidFAA registration status code V: Valid registration. All codes
N357T Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2023-07-11 ValidFAA registration status code V: Valid registration. All codes
N3820Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Nebraska
Multiple 2023-07-11 ValidFAA registration status code V: Valid registration. All codes
N5781F Piper
PA-28-140
Fixed-wing, single engine
Standard 2023-07-11 ValidFAA registration status code V: Valid registration. All codes
N65003 Cessna
172P
Fixed-wing, single engine Major Air LLC
Charleston, South Carolina
Standard 2023-07-11 ValidFAA registration status code V: Valid registration. All codes
N8958V Cessna
172M
Fixed-wing, single engine Hyldburg Aviation INC
Plymouth, Massachusetts
Standard 2023-07-11 ValidFAA registration status code V: Valid registration. All codes
N1181M Cessna
172K
Fixed-wing, single engine Individual owner
California
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N15802 Piper
PA-28-180
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N3028Z Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N38494 Piper
PA-28-161
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N4888Z Piper
PA-22-108
Fixed-wing, single engine Individual owner
Idaho
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N521TD Cessna
172K
Fixed-wing, single engine Raiders-Tigers Flying Club
Houston, Texas
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N6045L American
AA-5
Fixed-wing, single engine Individual owner
New York
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N6385Z Piper
PA-25
Fixed-wing, single engine Co-owned owner
Texas
Restricted 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N79072 Cessna
172K
Fixed-wing, single engine
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N8167N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N83013 Piper
PA-28-161
Fixed-wing, single engine Tjmc LLC
Riverbank, California
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N9777D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-07-10 ValidFAA registration status code V: Valid registration. All codes
N4478X Piper
PA-28-151
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-07-09 ValidFAA registration status code V: Valid registration. All codes
N64159 Cessna
172M
Fixed-wing, single engine Flying 14 LLC
Spokane, Washington
Standard 2023-07-09 ValidFAA registration status code V: Valid registration. All codes
N733TT Cessna
172N
Fixed-wing, single engine Teens In Flight INC
Palm Coast, Florida
Standard 2023-07-09 ValidFAA registration status code V: Valid registration. All codes
N20876 Cessna
172M
Fixed-wing, single engine Ogalalla Land & Cattle LTD
Douglas, Wyoming
Standard 2023-07-08 ValidFAA registration status code V: Valid registration. All codes
N7120Q Cessna
172L
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-07-08 ValidFAA registration status code V: Valid registration. All codes
N81843 Piper
PA-28-161
Fixed-wing, single engine Individual owner
South Carolina
Standard 2023-07-08 ValidFAA registration status code V: Valid registration. All codes
N88GE Eddings George Jr
RV 4
Fixed-wing, single engine Individual owner
Louisiana
Experimental 2023-07-08 ValidFAA registration status code V: Valid registration. All codes
N98249 Piper
PA-28-140
Fixed-wing, single engine Tramper Air LLC
Rockford, Michigan
Standard 2023-07-08 ValidFAA registration status code V: Valid registration. All codes
N1930T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-07-07 ValidFAA registration status code V: Valid registration. All codes
N339DL Lawrence D W/Lawrence L R
VANS RV-9A
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-07-07 ValidFAA registration status code V: Valid registration. All codes
N4471Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Multiple 2023-07-07 ValidFAA registration status code V: Valid registration. All codes
N5047W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-07-07 ValidFAA registration status code V: Valid registration. All codes
N7755G Cessna
172L
Fixed-wing, single engine Sagori Aviation LLC
Orlando, Florida
Standard 2023-07-07 ValidFAA registration status code V: Valid registration. All codes
N77L Haworth William E
VANS RV9A
Fixed-wing, single engine Individual owner
Utah
Experimental 2023-07-07 ValidFAA registration status code V: Valid registration. All codes
N4652R Piper
PA-28-140
Fixed-wing, single engine Springfield Flying Club INC
Ludlow, Vermont
Standard 2023-07-06 ValidFAA registration status code V: Valid registration. All codes
N55420 Cessna
172P
Fixed-wing, single engine M A R S Aircraft Leasing LLC
Williamsburg, Virginia
Standard 2023-07-06 ValidFAA registration status code V: Valid registration. All codes
N589CB Bryan Curtis L
VANS RV-4
Fixed-wing, single engine Individual owner
Washington
Experimental 2023-07-06 ValidFAA registration status code V: Valid registration. All codes
N6139W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-07-06 ValidFAA registration status code V: Valid registration. All codes
N9874Q Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2023-07-06 ValidFAA registration status code V: Valid registration. All codes
N1067Q Piper
PA-28-140
Fixed-wing, single engine Hard Rock INC
Purcell, Oklahoma
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N2384Y Cessna
177
Fixed-wing, single engine Area-I Flying Club LLC
Atlanta, Georgia
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N27GF Cessna
172P
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N64120 Cessna
172M
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N6572W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N6ZP Cessna
172P
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N82424 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N9137H Cessna
172M
Fixed-wing, single engine Pilots Flying School LLC
Englishtown, New Jersey
Standard 2023-07-05 ValidFAA registration status code V: Valid registration. All codes
N19655 Cessna
172L
Fixed-wing, single engine Individual owner
Florida
Standard 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N3585Q Cessna
172M
Fixed-wing, single engine Co-owned owner
New York
Standard 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N5891D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N737HG Cessna
172N
Fixed-wing, single engine Guyair INC
Saint Charles, Missouri
Standard 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N80102 Cessna
172M
Fixed-wing, single engine Transonic LLC
Wilmington, Delaware
Standard 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N845RV Ware Randall L
RV7A
Fixed-wing, single engine 88 Romeo Vans Rv LLC
Austin, Texas
Experimental 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N907CU Stephen Austin Mcleod
AK BUSHCUB
Fixed-wing, single engine Individual owner
Alaska
Experimental 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N9810C Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
California
Standard 2023-07-04 ValidFAA registration status code V: Valid registration. All codes
N449WF Piper
PA-18-150
Fixed-wing, single engine Glenns Super Cub LLC
Fort Lauderdale, Florida
Restricted 2023-07-03 ValidFAA registration status code V: Valid registration. All codes
N77TB Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-07-03 ValidFAA registration status code V: Valid registration. All codes
N8476J Piper
PA-14
Fixed-wing, single engine Blue Streak Aire LLC
Sandpoint, Idaho
Standard 2023-07-03 ValidFAA registration status code V: Valid registration. All codes
N5712D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
California
Standard 2023-07-02 ValidFAA registration status code V: Valid registration. All codes
N96616 Cessna
172P
Fixed-wing, single engine Air Transport INC DBA
Las Vegas, Nevada
Standard 2023-07-02 ValidFAA registration status code V: Valid registration. All codes
N111YZ Robinson Helicopter
R22 BETA
Helicopter Individual owner
Texas
Standard 2023-07-01 ValidFAA registration status code V: Valid registration. All codes
N13SR Rasmussen Steven L
STARDUSTER TOO
Fixed-wing, single engine 10 Skies LLC
Corpus Christi, Texas
Experimental 2023-07-01 ValidFAA registration status code V: Valid registration. All codes
N1747T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kansas
Standard 2023-07-01 ValidFAA registration status code V: Valid registration. All codes
N2301L Beech
23
Fixed-wing, single engine Muskrat Flying Club LLC
Orlando, Florida
Standard 2023-07-01 ValidFAA registration status code V: Valid registration. All codes
N30184 Cessna
172M
Fixed-wing, single engine Cp Aviation INC
Santa Paula, California
Standard 2023-07-01 ValidFAA registration status code V: Valid registration. All codes
N569RV Claycomb Rd/Claycomb Da
VANS RV-9
Fixed-wing, single engine Co-owned owner
Florida
Experimental 2023-07-01 ValidFAA registration status code V: Valid registration. All codes
N7194 Cessna
150F
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-07-01 ValidFAA registration status code V: Valid registration. All codes
N1620A Piper
PA-18
Fixed-wing, single engine Co-owned owner
Alaska
Restricted 2023-06-30 ValidFAA registration status code V: Valid registration. All codes
N29595 Cessna
177
Fixed-wing, single engine Delta Fox CORP
Schaumburg, Illinois
Standard 2023-06-30 ValidFAA registration status code V: Valid registration. All codes
N32475 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N3814P Piper
PA-22S-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N43348 Piper
PA-28-140
Fixed-wing, single engine A Bit Extra LLC
River Ridge, Louisiana
Standard 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N6934W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nebraska
Standard 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N702J Baker James
RV9A
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N7300L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Utah
Standard 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N734JD Cessna
172N
Fixed-wing, single engine Bergman James H
Buckley, Washington
Standard 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N737CW Cessna
172N
Fixed-wing, single engine Wakefield Aviation LLC
Riverton, Utah
Standard 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N738UD Cessna
172N
Fixed-wing, single engine Affection Above Aviation INC
Yukon, Oklahoma
Standard 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N78856 Cessna
172K
Fixed-wing, single engine Co-owned owner
California
Standard 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N86RH Hampton Robert H
OSPREY II
Fixed-wing, single engine Individual owner
Oregon
Experimental 2023-06-29 ValidFAA registration status code V: Valid registration. All codes
N1472U Cessna
172M
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N33DH Beech
A23-19
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N477BG Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Michigan
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N5107V Morrisey
2150
Fixed-wing, single engine Individual owner
Texas
Standard 2023-06-28 ValidFAA registration status code V: Valid registration. All codes
N54VV Stuwe Werner
RV 4
Fixed-wing, single engine Individual owner
California
Experimental 2023-06-28 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.