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
N12559 Cessna
172M
Fixed-wing, single engine Hampton Flying Services LLC
Portsmouth, New Hampshire
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N13119 Cessna
172M
Fixed-wing, single engine Boomer Aviation LLC
Catoosa, Oklahoma
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N20454 Cessna
172M
Fixed-wing, single engine Rl Aviation LLC
Miami, Florida
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N20714 Cessna
172M
Fixed-wing, single engine All American Aviation Services INC
Wilmington, North Carolina
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N3323T Cessna
177
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N5202W Piper
PA-28
Fixed-wing, single engine Individual owner
New York
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N5554U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kansas
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N5749W Piper
PA-28-160
Fixed-wing, single engine Dch Aviation LLC
Owasso, Oklahoma
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N727BH Piper
PA-28-151
Fixed-wing, single engine Piper 7Bh LLC
Middleton, Massachusetts
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N747HL Leong Herman Y. M.
GLASTAR 1
Fixed-wing, single engine Individual owner
California
Experimental 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N8413R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-05-01 ValidFAA registration status code V: Valid registration. All codes
N193SP Cessna
172P
Fixed-wing, single engine Indiana State Police
Greenwood, Indiana
Standard 2023-04-30 ValidFAA registration status code V: Valid registration. All codes
N19896 Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-04-30 ValidFAA registration status code V: Valid registration. All codes
N47560 Piper
PA-28-161
Fixed-wing, single engine Vy Aviation LLC
Beverly, Massachusetts
Standard 2023-04-30 ValidFAA registration status code V: Valid registration. All codes
N737TE Cessna
172N
Fixed-wing, single engine John P Kintzle LLC
Mount Prospect, Illinois
Standard 2023-04-30 ValidFAA registration status code V: Valid registration. All codes
N15943 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N2346T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N241WH Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N80884 Cessna
172M
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N95481 Piper
PA-28-140
Fixed-wing, single engine North Texas Aeronautics LLC
Fort Worth, Texas
Standard 2023-04-29 ValidFAA registration status code V: Valid registration. All codes
N1091M Cessna
172L
Fixed-wing, single engine Swaz Aviation LLC
Mesa, Arizona
Standard 2023-04-28 ValidFAA registration status code V: Valid registration. All codes
N1823P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Montana
Standard 2023-04-28 ValidFAA registration status code V: Valid registration. All codes
N4362Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
California
Standard 2023-04-28 ValidFAA registration status code V: Valid registration. All codes
N6190D Cessna
172N
Fixed-wing, single engine Tap Solutions INC
San Diego, California
Standard 2023-04-28 ValidFAA registration status code V: Valid registration. All codes
N75572 Cessna
172N
Fixed-wing, single engine Individual owner
Iowa
Standard 2023-04-28 ValidFAA registration status code V: Valid registration. All codes
N9864W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2023-04-28 ValidFAA registration status code V: Valid registration. All codes
N12653 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N31082 Piper
PA-28-161
Fixed-wing, single engine Bershire Aviation Enterprises LLC
Great Barrington, Massachusetts
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N44806 Piper
PA-28-151
Fixed-wing, single engine Nationwide Aviation LLC
Hudson Oaks, Texas
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N7224F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N7276D Piper
PA-18A
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N739PB Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N977VM Piper
PA-18-135
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-04-27 ValidFAA registration status code V: Valid registration. All codes
N1688J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Colorado
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N2203D Piper
PA-28-161
Fixed-wing, single engine Whytes INC
Coconut Creek, Florida
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N243MA American Champion Aircraft
7GCAA
Fixed-wing, single engine J W Peterson INC
Warren, Minnesota
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N33SP Piper
PA-28
Fixed-wing, single engine Individual owner
South Carolina
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N355G Cessna
172N
Fixed-wing, single engine Personal Aviation INC
Poway, California
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N4233T Smith Donald A Jr
ACRO SPORT-II
Fixed-wing, single engine Individual owner
Florida
Experimental 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N4483J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N46211 Cessna
172I
Fixed-wing, single engine Individual owner
Florida
Multiple 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N54905 Cessna
172P
Fixed-wing, single engine 905 Cess LLC
Wilmington, Delaware
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N56343 Piper
PA-28-140
Fixed-wing, single engine R&T Wings LLC
Lewes, Delaware
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N6132J Piper
PA-28-151
Fixed-wing, single engine Wolf Aviation Network INC
Westfield, Massachusetts
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N737FJ Cessna
172N
Fixed-wing, single engine Vero Technical Support INC
Pensacola, Florida
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N737YF Cessna
172N
Fixed-wing, single engine Vero Technical Support INC
Pensacola, Florida
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N771WS Piper
PA-28-140
Fixed-wing, single engine Individual owner
Hawaii
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N8440L Cessna
172I
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N943RV Branning Orville Jay
RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-04-26 ValidFAA registration status code V: Valid registration. All codes
N20592 Cessna
172M
Fixed-wing, single engine Iowa Lakes Community College
Estherville, Iowa
Standard 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N2175N Piper
PA-28-161
Fixed-wing, single engine Individual owner
Washington
Standard 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N381DF Cessna
172N
Fixed-wing, single engine South & Silver Aviation LLC
Pikesville, Maryland
Standard 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N738FY Cessna
172N
Fixed-wing, single engine Vero Technical Support INC
Pensacola, Florida
Standard 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N73904 Cessna
172N
Fixed-wing, single engine Vaayu Aviation LLC
Newark, California
Standard 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N93RF Eckert/Engle
LONG-EZ
Fixed-wing, single engine Withheld at owner's request
Experimental 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N9732D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2023-04-25 ValidFAA registration status code V: Valid registration. All codes
N4133E Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-04-24 ValidFAA registration status code V: Valid registration. All codes
N46001 Cessna
172I
Fixed-wing, single engine Df Kitcar LLC
Red Oak, Texas
Standard 2023-04-24 ValidFAA registration status code V: Valid registration. All codes
N58SC Crawford Sheldon J
OSPREY 2
Fixed-wing, single engine Individual owner
Washington
Experimental 2023-04-24 ValidFAA registration status code V: Valid registration. All codes
N5140E Cessna
172N
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-04-23 ValidFAA registration status code V: Valid registration. All codes
N7217J Piper
PA-28-140
Fixed-wing, single engine Avionraton LLC
Valparaiso, Indiana
Standard 2023-04-23 ValidFAA registration status code V: Valid registration. All codes
N739FH Cessna
172N
Fixed-wing, single engine R&R Aero Services LLC
Eden Prairie, Minnesota
Standard 2023-04-23 ValidFAA registration status code V: Valid registration. All codes
N8743M Beech
23
Fixed-wing, single engine Individual owner
New Mexico
Standard 2023-04-23 ValidFAA registration status code V: Valid registration. All codes
N100WW Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N12908 Cessna
172M
Fixed-wing, single engine M & R Management Consulting INC
Fort Meade, Florida
Standard 2023-04-22 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N13275 Cessna
172M
Fixed-wing, single engine Echo 7 Tango Aviation LLC
Gunter, Texas
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N1348A Piper
PA-18-125
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N19671 Cessna
172L
Fixed-wing, single engine Cascade Aviation LLC
Burlington, Washington
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N2663P Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N29L Piper
PA-28-140
Fixed-wing, single engine Career Flyers LLC
Crittenden, Kentucky
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N3854P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N6735B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N733ZB Cessna
172N
Fixed-wing, single engine Midstate Aviation 1 LLC
Owosso, Michigan
Standard 2023-04-22 ValidFAA registration status code V: Valid registration. All codes
N112SC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N12194 Cessna
172M
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N16318 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N6513T Beech
19A
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N7073B Piper
PA-18A
Fixed-wing, single engine Individual owner
Pennsylvania
Multiple 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N737TQ Cessna
172N
Fixed-wing, single engine N737Tq Aviation LLC
Sheridan, Wyoming
Standard 2023-04-21 ValidFAA registration status code V: Valid registration. All codes
N12997 Cessna
172M
Fixed-wing, single engine Wausau Flying Service INC
Wausau, Wisconsin
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N19967 Cessna
172M
Fixed-wing, single engine Bdc Aero LLC
Miami, Texas
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N20381 Cessna
172M
Fixed-wing, single engine Dsr-Cherokee 180 LLC
Dallas, Texas
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N21785 Cessna
172M
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N2375P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N3638Q Beech
A23-19
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N4495R Cessna
172M
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N5220T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N5240E Cessna
172N
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N605AD Piper
PA-28-140
Fixed-wing, single engine Blue Sky Aviation LLC
Great Bend, Kansas
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N64233 Cessna
172M
Fixed-wing, single engine Walla Walla University
College Place, Washington
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N655RV Caldwell Ronald L
RV6A
Fixed-wing, single engine Co-owned owner
Florida
Experimental 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N6768W Piper
PA-28-140
Fixed-wing, single engine Cimeira Aviation LLC
Birmingham, Alabama
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N7VV Waldrop Morris M
VANS RV-6A
Fixed-wing, single engine Individual owner
Nevada
Experimental 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N84293 Cessna
172K
Fixed-wing, single engine Nwa Flyers LLC
Missoula, Montana
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N8882F Piper
PA-28-151
Fixed-wing, single engine Cirrus Services INC
Fargo, North Dakota
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N916TT Piper
PA-28-161
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N95303 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-04-20 ValidFAA registration status code V: Valid registration. All codes
N1113N Piper
PA-18-150
Fixed-wing, single engine Skywagon Aero LLC
Wilmington, Delaware
Standard 2023-04-19 ValidFAA registration status code V: Valid registration. All codes
N19888 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2023-04-19 ValidFAA registration status code V: Valid registration. All codes
N2507K Aero Commander
100
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2023-04-19 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.