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
N7396J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-10-11 ValidFAA registration status code V: Valid registration. All codes
N8612D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-10-11 ValidFAA registration status code V: Valid registration. All codes
N1691P Piper
PA-22-150
Fixed-wing, single engine Individual owner
New Jersey
Standard 2019-10-10 ValidFAA registration status code V: Valid registration. All codes
N20106 Cessna
172M
Fixed-wing, single engine Atlanta Air Academy LLC
Kennessaw, Georgia
Standard 2019-10-10 ValidFAA registration status code V: Valid registration. All codes
N20689 Cessna
172M
Fixed-wing, single engine Individual owner
Maine
Standard 2019-10-10 ValidFAA registration status code V: Valid registration. All codes
N43287 Piper
PA-28-151
Fixed-wing, single engine Individual owner
New Jersey
Standard 2019-10-10 ValidFAA registration status code V: Valid registration. All codes
N6142X Cessna
172N
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-10-10 ValidFAA registration status code V: Valid registration. All codes
N831MN William T Sallee
VANS RV-9
Fixed-wing, single engine Individual owner
Ohio
Experimental 2019-10-10 ValidFAA registration status code V: Valid registration. All codes
N53885 Cessna
172P
Fixed-wing, single engine Gc Aviation Services-1 LLC
Miamisburg, Ohio
Standard 2019-10-09 ValidFAA registration status code V: Valid registration. All codes
N55291 Cessna
172P
Fixed-wing, single engine Riverside Flight Academy LLC
Riverside, California
Standard 2019-10-09 ValidFAA registration status code V: Valid registration. All codes
N739HC Cessna
172N
Fixed-wing, single engine Gc Aviation Services-1 LLC
Miamisburg, Ohio
Standard 2019-10-09 ValidFAA registration status code V: Valid registration. All codes
N8324E Cessna
172N
Fixed-wing, single engine Gc Aviation Services-1 LLC
Miamisburg, Ohio
Standard 2019-10-09 ValidFAA registration status code V: Valid registration. All codes
N96879 Cessna
172P
Fixed-wing, single engine Gc Aviation Services-1 LLC
Miamisburg, Ohio
Standard 2019-10-09 ValidFAA registration status code V: Valid registration. All codes
N971GJ Robinson Helicopter
R22 BETA
Helicopter Dragonfly Aviation LLC
Mirando City, Texas
Standard 2019-10-09 ValidFAA registration status code V: Valid registration. All codes
N13286 Cessna
172M
Fixed-wing, single engine Aero Club Seven INC
Crosslake, Minnesota
Standard 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N2884P Piper
PA-18A 150
Fixed-wing, single engine Rocky Creek Jbd INC
Boca Grande, Florida
Standard 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N3744Z Piper
PA-18-150
Fixed-wing, single engine Wild About Nature LLC
Fairbanks, Alaska
Multiple 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N4129Z Piper
PA-18-150
Fixed-wing, single engine Wild About Nature LLC
Fairbanks, Alaska
Multiple 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N4316H Piper
PA-18
Fixed-wing, single engine Individual owner
Texas
Standard 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N46486 Cessna
172K
Fixed-wing, single engine Calimesa LLC
North Las Vegas, Nevada
Standard 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N47406 Piper
PA-28-161
Fixed-wing, single engine Brandywine Flight School
West Chester, Pennsylvania
Standard 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N54939 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Standard 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N711KN Schilling Karl F
KN RV8
Fixed-wing, single engine Individual owner
Indiana
Experimental 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N9210H Cessna
172M
Fixed-wing, single engine Flex Air Holdings INC
Wilmington, Delaware
Standard 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N9914W Piper
PA-28-140
Fixed-wing, single engine Yellow Bird Flying Club
Toledo, Ohio
Standard 2019-10-08 ValidFAA registration status code V: Valid registration. All codes
N438FD Piper
PA-28-140
Fixed-wing, single engine Fly Dynasty CORP
Ocala, Florida
Standard 2019-10-07 ValidFAA registration status code V: Valid registration. All codes
N5062N Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Wyoming
Standard 2019-10-07 ValidFAA registration status code V: Valid registration. All codes
N787DJ Piper
PA-28-161
Fixed-wing, single engine Dgj Tex LLC DBA
Cleburne, Texas
Standard 2019-10-07 ValidFAA registration status code V: Valid registration. All codes
N8348R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Iowa
Standard 2019-10-07 ValidFAA registration status code V: Valid registration. All codes
N1195U Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Restricted 2019-10-04 ValidFAA registration status code V: Valid registration. All codes
N5571V Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Florida
Standard 2019-10-04 ValidFAA registration status code V: Valid registration. All codes
N733UB Cessna
172N
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2019-10-04 ValidFAA registration status code V: Valid registration. All codes
N8358R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2019-10-04 ValidFAA registration status code V: Valid registration. All codes
N21741 Cessna
172M
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2019-10-03 ValidFAA registration status code V: Valid registration. All codes
N3354Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2019-10-03 ValidFAA registration status code V: Valid registration. All codes
N8752V Bellanca
7GCAA
Fixed-wing, single engine Richard Flying Service INC
Rayne, Louisiana
Standard 2019-10-03 ValidFAA registration status code V: Valid registration. All codes
N88252 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Texas
Multiple 2019-10-03 ValidFAA registration status code V: Valid registration. All codes
N140Z Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2019-10-02 ValidFAA registration status code V: Valid registration. All codes
N1611P Piper
PA-22-150
Fixed-wing, single engine Boyer Scott C
Custar, Ohio
Standard 2019-10-02 ValidFAA registration status code V: Valid registration. All codes
N1890P Piper
PA-22-150
Fixed-wing, single engine Individual owner
West Virginia
Standard 2019-10-02 ValidFAA registration status code V: Valid registration. All codes
N271PT Harryman Robert J
RV-6A
Fixed-wing, single engine Individual owner
Wyoming
Experimental 2019-10-02 ValidFAA registration status code V: Valid registration. All codes
N6288D Cessna
172N
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2019-10-02 ValidFAA registration status code V: Valid registration. All codes
N6994J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2019-10-02 ValidFAA registration status code V: Valid registration. All codes
N7389K Piper
PA-20
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-10-02 ValidFAA registration status code V: Valid registration. All codes
N7970G Cessna
172L
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2019-10-02 ValidFAA registration status code V: Valid registration. All codes
N19GX Graham Gary E
RV-4
Fixed-wing, single engine Courtney Aircraft LLC
Keizer, Oregon
Experimental 2019-10-01 ValidFAA registration status code V: Valid registration. All codes
N5053W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Washington
Standard 2019-10-01 ValidFAA registration status code V: Valid registration. All codes
N733JA Cessna
172N
Fixed-wing, single engine Lakewood Investments LLC
Victorville, California
Standard 2019-10-01 ValidFAA registration status code V: Valid registration. All codes
N1596J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-09-30 ValidFAA registration status code V: Valid registration. All codes
N2387S Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-09-30 ValidFAA registration status code V: Valid registration. All codes
N34LH Hale Lowell A
AVID MAGNUM
Fixed-wing, single engine Individual owner
Nebraska
Experimental 2019-09-30 ValidFAA registration status code V: Valid registration. All codes
N4466R Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2019-09-30 ValidFAA registration status code V: Valid registration. All codes
N44686 Piper
PA-28-151
Fixed-wing, single engine Boca Flying Club INC
Boynton Beach, Florida
Standard 2019-09-30 ValidFAA registration status code V: Valid registration. All codes
N4734V Piper
PA-20
Fixed-wing, single engine Individual owner
California
Standard 2019-09-30 ValidFAA registration status code V: Valid registration. All codes
N733RV Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2019-09-30 ValidFAA registration status code V: Valid registration. All codes
N739GS Cessna
172N
Fixed-wing, single engine Cke Aviation LLC
Marietta, Georgia
Standard 2019-09-30 ValidFAA registration status code V: Valid registration. All codes
N1190H Piper
PA-28-161
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-09-27 ValidFAA registration status code V: Valid registration. All codes
N3118Z Piper
PA-22-150
Fixed-wing, single engine Tridogs LLC
Cleveland, Georgia
Standard 2019-09-27 ValidFAA registration status code V: Valid registration. All codes
N53724 Bellanca
7GCBC
Fixed-wing, single engine Hackamore Equipment LLC
Prairie City, South Dakota
Standard 2019-09-27 ValidFAA registration status code V: Valid registration. All codes
N6833B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kansas
Standard 2019-09-27 ValidFAA registration status code V: Valid registration. All codes
N737SJ Cessna
172N
Fixed-wing, single engine Oracle Aviation LLC
Omaha, Nebraska
Standard 2019-09-27 ValidFAA registration status code V: Valid registration. All codes
N86647 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
New Jersey
Standard 2019-09-27 ValidFAA registration status code V: Valid registration. All codes
N95147 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2019-09-27 ValidFAA registration status code V: Valid registration. All codes
N101NL Piper
PA-28-140
Fixed-wing, single engine 1St American Aviation INC
North Miami, Florida
Standard 2019-09-26 ValidFAA registration status code V: Valid registration. All codes
N602CB Cunningham
MODEL-1
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2019-09-26 ValidFAA registration status code V: Valid registration. All codes
N30044 Cessna
177
Fixed-wing, single engine Air Data Solutions LLC
Natchitoches, Louisiana
Standard 2019-09-25 ValidFAA registration status code V: Valid registration. All codes
N44524 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2019-09-25 ValidFAA registration status code V: Valid registration. All codes
N5280W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-09-25 ValidFAA registration status code V: Valid registration. All codes
N584SF Cessna
172I
Fixed-wing, single engine Dsr Cherokee 180 LLC
Dallas, Texas
Standard 2019-09-25 ValidFAA registration status code V: Valid registration. All codes
N8712N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2019-09-25 ValidFAA registration status code V: Valid registration. All codes
N97650 Cessna
172P
Fixed-wing, single engine Updraft LLC
Kissimmee, Florida
Standard 2019-09-25 ValidFAA registration status code V: Valid registration. All codes
N129MS Martinez Andrew R
VANS RV-4
Fixed-wing, single engine Winging It LLC
Kalispell, Montana
Experimental 2019-09-24 ValidFAA registration status code V: Valid registration. All codes
N1616R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-09-24 ValidFAA registration status code V: Valid registration. All codes
N7450G Cessna
172K
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-09-24 ValidFAA registration status code V: Valid registration. All codes
N8476R Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2019-09-24 ValidFAA registration status code V: Valid registration. All codes
N9442P Piper
PA-18-150
Fixed-wing, single engine 42Papa LLC
Soldotna, Alaska
Standard 2019-09-24 ValidFAA registration status code V: Valid registration. All codes
N9611U Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Colorado
Standard 2019-09-24 ValidFAA registration status code V: Valid registration. All codes
N9700L Beech
B19
Fixed-wing, single engine Jet Aviation LLC
Commerce Township, Michigan
Standard 2019-09-24 ValidFAA registration status code V: Valid registration. All codes
N4311A Piper
PA-28-161
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-09-23 ValidFAA registration status code V: Valid registration. All codes
N46245 Cessna
172I
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-09-23 ValidFAA registration status code V: Valid registration. All codes
N79065 Cessna
172K
Fixed-wing, single engine Individual owner
Indiana
Standard 2019-09-23 ValidFAA registration status code V: Valid registration. All codes
N9698V Cessna
172M
Fixed-wing, single engine Vermont Flight Academy INC
South Burlington, Vermont
Standard 2019-09-23 ValidFAA registration status code V: Valid registration. All codes
N84644 Cessna
172K
Fixed-wing, single engine Individual owner
Arizona
Standard 2019-09-20 ValidFAA registration status code V: Valid registration. All codes
N9807C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2019-09-20 ValidFAA registration status code V: Valid registration. All codes
N1591J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2019-09-19 ValidFAA registration status code V: Valid registration. All codes
N3997Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Standard 2019-09-19 ValidFAA registration status code V: Valid registration. All codes
N61972 Cessna
172M
Fixed-wing, single engine Smtm Holdings INC
Wilmington, Delaware
Standard 2019-09-19 ValidFAA registration status code V: Valid registration. All codes
N7420G Cessna
172K
Fixed-wing, single engine Co-owned owner
Washington
Standard 2019-09-19 ValidFAA registration status code V: Valid registration. All codes
N2232W Piper
PA-28-161
Fixed-wing, single engine Jkj Aviation
Wilmington, North Carolina
Standard 2019-09-18 ValidFAA registration status code V: Valid registration. All codes
N2239P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Alabama
Standard 2019-09-18 ValidFAA registration status code V: Valid registration. All codes
N272TL Cessna
172N
Fixed-wing, single engine Sanders Flight Training Center
Jasper, Alabama
Standard 2019-09-18 ValidFAA registration status code V: Valid registration. All codes
N729GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Individual owner
Michigan
Standard 2019-09-18 ValidFAA registration status code V: Valid registration. All codes
N1321B Luscombe
8A
Fixed-wing, single engine Individual owner
Montana
Experimental 2019-09-17 ValidFAA registration status code V: Valid registration. All codes
N30LV Piper
PA-28-161
Fixed-wing, single engine North Arkansas Aviation LLC
Paragould, Arkansas
Standard 2019-09-17 ValidFAA registration status code V: Valid registration. All codes
N4095Z Piper
PA-18-150
Fixed-wing, single engine Breidenbach Bros INC
Iliff, Colorado
Standard 2019-09-17 ValidFAA registration status code V: Valid registration. All codes
N738PM Cessna
172N
Fixed-wing, single engine Daviation INC
Willoughby, Ohio
Standard 2019-09-17 ValidFAA registration status code V: Valid registration. All codes
N26106 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Polymer Depot LLC
Delafield, Wisconsin
Standard 2019-09-16 ValidFAA registration status code V: Valid registration. All codes
N372GG Cessna
172P
Fixed-wing, single engine Ial CORP
Lewes, Delaware
Standard 2019-09-16 ValidFAA registration status code V: Valid registration. All codes
N4JE Eickmeier John L
PITTS SPECIAL S1C
Fixed-wing, single engine Pallas Consulting LLC
Fort Lupton, Colorado
Experimental 2019-09-16 ValidFAA registration status code V: Valid registration. All codes
N5380W Piper
PA-28
Fixed-wing, single engine Individual owner
California
Standard 2019-09-16 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.