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
N724CF Hutchins Frank
RV-4
Fixed-wing, single engine Co-owned owner
Colorado
Experimental 2016-12-09 ValidFAA registration status code V: Valid registration. All codes
N8403R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2016-12-09 ValidFAA registration status code V: Valid registration. All codes
N44RT Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-12-08 ValidFAA registration status code V: Valid registration. All codes
N5422Q Mandeville Richard
RV 4
Fixed-wing, single engine Individual owner
Massachusetts
Experimental 2016-12-08 ValidFAA registration status code V: Valid registration. All codes
N63803 Piper
PA-18-150
Fixed-wing, single engine Southern California Soaring Academy INC
Valencia, California
Standard 2016-12-08 ValidFAA registration status code V: Valid registration. All codes
N7527R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2016-12-08 ValidFAA registration status code V: Valid registration. All codes
N7947G Cessna
172L
Fixed-wing, single engine Stearman Field Aircraft Repair LLC
Benton, Kansas
Standard 2016-12-08 ValidFAA registration status code V: Valid registration. All codes
N113VG Robinson Helicopter
R22 BETA
Helicopter N113Vg LLC
Princeton, New Jersey
Standard 2016-12-07 ValidFAA registration status code V: Valid registration. All codes
N44253 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2016-12-07 ValidFAA registration status code V: Valid registration. All codes
N612BZ Cessna
172N
Fixed-wing, single engine Derby City Aviation LLC
Vero Beach, Florida
Standard 2016-12-07 ValidFAA registration status code V: Valid registration. All codes
N738LN Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2016-12-07 ValidFAA registration status code V: Valid registration. All codes
N109DM Mangan Dennis
RV6-A
Fixed-wing, single engine Individual owner
California
Experimental 2016-12-06 ValidFAA registration status code V: Valid registration. All codes
N1842T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Utah
Standard 2016-12-06 ValidFAA registration status code V: Valid registration. All codes
N2224 Piper
PA-18-150
Fixed-wing, single engine N2224 Dnr INC
Rochester, Minnesota
Standard 2016-12-06 ValidFAA registration status code V: Valid registration. All codes
N3546K Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2016-12-06 ValidFAA registration status code V: Valid registration. All codes
N5135V Morrisey
2150A
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-12-06 ValidFAA registration status code V: Valid registration. All codes
N7193L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Oregon
Standard 2016-12-06 ValidFAA registration status code V: Valid registration. All codes
N3JK Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2016-12-05 ValidFAA registration status code V: Valid registration. All codes
N5193R Cessna
172M
Fixed-wing, single engine Haralson Aviation INC
Elberton, Georgia
Standard 2016-12-05 ValidFAA registration status code V: Valid registration. All codes
N1116L Lake
LA-4
Fixed-wing, single engine R J Berra INC
Burtonsville, Maryland
Standard 2016-12-02 ValidFAA registration status code V: Valid registration. All codes
N20668 Cessna
172M
Fixed-wing, single engine Safety In Motion Flight Center
Puyallup, Washington
Standard 2016-12-02 ValidFAA registration status code V: Valid registration. All codes
N68547 Bellanca
7ECA
Fixed-wing, single engine Individual owner
California
Standard 2016-12-02 ValidFAA registration status code V: Valid registration. All codes
N7474T Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2016-12-02 ValidFAA registration status code V: Valid registration. All codes
N9134Y Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2016-12-02 ValidFAA registration status code V: Valid registration. All codes
N5038A Bellanca
7GCAA
Fixed-wing, single engine Wild River Flying Club
Saint Croix Falls, Wisconsin
Standard 2016-12-01 ValidFAA registration status code V: Valid registration. All codes
N40008 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2016-11-30 ValidFAA registration status code V: Valid registration. All codes
N4303T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2016-11-30 ValidFAA registration status code V: Valid registration. All codes
N4852A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-11-30 ValidFAA registration status code V: Valid registration. All codes
N515SK Kermanj Sohrab
RV-6
Fixed-wing, single engine Individual owner
Georgia
Experimental 2016-11-30 ValidFAA registration status code V: Valid registration. All codes
N7351G Cessna
172K
Fixed-wing, single engine Middlebury Flying Club INC
Middlebury, Vermont
Standard 2016-11-30 ValidFAA registration status code V: Valid registration. All codes
N804B Cessna
172M
Fixed-wing, single engine D G Leasing LLC
Houston, Texas
Standard 2016-11-30 ValidFAA registration status code V: Valid registration. All codes
N9735P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2016-11-30 ValidFAA registration status code V: Valid registration. All codes
N15573 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2016-11-29 ValidFAA registration status code V: Valid registration. All codes
N160GT Omf
OMF-100-160
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2016-11-29 ValidFAA registration status code V: Valid registration. All codes
N4331P Piper
PA-28-161
Fixed-wing, single engine Individual owner
Georgia
Standard 2016-11-29 ValidFAA registration status code V: Valid registration. All codes
N4651G Cessna
172N
Fixed-wing, single engine Aviation Sky Art LLC
Anacortes, Washington
Standard 2016-11-29 ValidFAA registration status code V: Valid registration. All codes
N5769U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2016-11-29 ValidFAA registration status code V: Valid registration. All codes
N9853W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2016-11-29 ValidFAA registration status code V: Valid registration. All codes
N419F Truax Bill
RV-6
Fixed-wing, single engine Individual owner
Michigan
Experimental 2016-11-28 ValidFAA registration status code V: Valid registration. All codes
N4266Q Cessna
172L
Fixed-wing, single engine Individual owner
Idaho
Standard 2016-11-28 ValidFAA registration status code V: Valid registration. All codes
N44397 Piper
PA-28-140
Fixed-wing, single engine Tsfc INC
Angola, Indiana
Standard 2016-11-28 ValidFAA registration status code V: Valid registration. All codes
N4SW Cessna
172M
Fixed-wing, single engine Salem Airport Authority
Salem, Illinois
Standard 2016-11-28 ValidFAA registration status code V: Valid registration. All codes
N50479 Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-11-28 ValidFAA registration status code V: Valid registration. All codes
N52119 Cessna
172P
Fixed-wing, single engine Big e LLC
Lemoore, California
Standard 2016-11-28 ValidFAA registration status code V: Valid registration. All codes
N733UG Cessna
172N
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2016-11-28 ValidFAA registration status code V: Valid registration. All codes
N75080 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2016-11-28 ValidFAA registration status code V: Valid registration. All codes
N2950X Cessna
177
Fixed-wing, single engine Eagle Sky Patrol INC
Deadwood, South Dakota
Standard 2016-11-23 ValidFAA registration status code V: Valid registration. All codes
N333LT Cook Robert K
RV-3
Fixed-wing, single engine Individual owner
Texas
Experimental 2016-11-23 ValidFAA registration status code V: Valid registration. All codes
N4317D Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2016-11-22 ValidFAA registration status code V: Valid registration. All codes
N7769 Root Erwin L
SA300 STRDSTR TOO
Fixed-wing, single engine Individual owner
California
Experimental 2016-11-22 ValidFAA registration status code V: Valid registration. All codes
N9682W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Connecticut
Standard 2016-11-22 ValidFAA registration status code V: Valid registration. All codes
N467PE Smith Grover
TWINSTAR 30
Rotorcraft Individual owner
Indiana
Experimental 2016-11-21 ValidFAA registration status code V: Valid registration. All codes
N73768 Cessna
172N
Fixed-wing, single engine Flighttime INC
Wiscasset, Maine
Standard 2016-11-21 ValidFAA registration status code V: Valid registration. All codes
N82982 Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-11-21 ValidFAA registration status code V: Valid registration. All codes
N3909C Cessna
172I
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2016-11-18 ValidFAA registration status code V: Valid registration. All codes
N807EH Robinson Helicopter
R22 BETA
Helicopter Individual owner
New Mexico
Standard 2016-11-18 ValidFAA registration status code V: Valid registration. All codes
N2267Y Cessna
177
Fixed-wing, single engine Individual owner
Texas
Standard 2016-11-17 ValidFAA registration status code V: Valid registration. All codes
N2300J Beech
23
Fixed-wing, single engine Individual owner
New Mexico
Standard 2016-11-17 ValidFAA registration status code V: Valid registration. All codes
N3938P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2016-11-17 ValidFAA registration status code V: Valid registration. All codes
N972NC Cessna
172L
Fixed-wing, single engine Ial CORP
Lewes, Delaware
Standard 2016-11-17 ValidFAA registration status code V: Valid registration. All codes
N218TB Socata
TB 9 TAMPICO
Fixed-wing, single engine Individual owner
Alabama
Standard 2016-11-16 ValidFAA registration status code V: Valid registration. All codes
N30999 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2016-11-16 ValidFAA registration status code V: Valid registration. All codes
N46586 Cessna
172K
Fixed-wing, single engine Individual owner
Kentucky
Standard 2016-11-16 ValidFAA registration status code V: Valid registration. All codes
N73040 Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2016-11-16 ValidFAA registration status code V: Valid registration. All codes
N737UA Cessna
172N
Fixed-wing, single engine Alternate Air INC
Seattle, Washington
Standard 2016-11-16 ValidFAA registration status code V: Valid registration. All codes
N80490 Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2016-11-16 ValidFAA registration status code V: Valid registration. All codes
N8299E Cessna
172N
Fixed-wing, single engine London Corbin Airport Board
London, Kentucky
Standard 2016-11-16 ValidFAA registration status code V: Valid registration. All codes
N222CD Smith David H
RV-6
Fixed-wing, single engine Individual owner
Florida
Experimental 2016-11-15 ValidFAA registration status code V: Valid registration. All codes
N3855Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2016-11-15 ValidFAA registration status code V: Valid registration. All codes
N42167 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2016-11-15 ValidFAA registration status code V: Valid registration. All codes
N8304V Champion
7GCBC
Fixed-wing, single engine Horning Air LLC
Cresbard, South Dakota
Restricted 2016-11-15 ValidFAA registration status code V: Valid registration. All codes
N9111D Piper
PA-18A 150
Fixed-wing, single engine Emery Craig A
Wasilla, Alaska
Multiple 2016-11-15 ValidFAA registration status code V: Valid registration. All codes
N2556M Piper
PA-12
Fixed-wing, single engine Individual owner
Washington
Restricted 2016-11-14 ValidFAA registration status code V: Valid registration. All codes
N29056 Cessna
172M
Fixed-wing, single engine Land of Lakes Aviation LLC
Eagle River, Wisconsin
Standard 2016-11-14 ValidFAA registration status code V: Valid registration. All codes
N13880 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-11-10 ValidFAA registration status code V: Valid registration. All codes
N2764P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Nevada
Experimental 2016-11-10 ValidFAA registration status code V: Valid registration. All codes
N2860Q Cessna
172L
Fixed-wing, single engine Lawton Metropolitan Area Airport Authority
Lawton, Oklahoma
Standard 2016-11-10 ValidFAA registration status code V: Valid registration. All codes
N471JR Cessna
172M
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2016-11-10 ValidFAA registration status code V: Valid registration. All codes
N8986R Champion
7GCB
Fixed-wing, single engine Individual owner
Michigan
Experimental 2016-11-10 ValidFAA registration status code V: Valid registration. All codes
N11DU Piper
PA-22
Fixed-wing, single engine Individual owner
Arizona
Standard 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N208PL Lutz Paul A
VANS RV6
Fixed-wing, single engine Co-owned owner
Ohio
Experimental 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N31669 Piper
PA-28-161
Fixed-wing, single engine Navy Annapolis Flight Center INC
Edgewater, Maryland
Standard 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N41MS Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N505FL Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N5085K Cessna
172N
Fixed-wing, single engine Martin Bach Aviation LLC
Cornelius, North Carolina
Standard 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N5866D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N73848 Cessna
172N
Fixed-wing, single engine Individual owner
Minnesota
Standard 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N7574F Champion
7GCAA
Fixed-wing, single engine Individual owner
Texas
Standard 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N8947V Cessna
172M
Fixed-wing, single engine Individual owner
Alabama
Standard 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N9270D Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-11-09 ValidFAA registration status code V: Valid registration. All codes
N4347G Piper
PA-28-161
Fixed-wing, single engine Purdue Pilots INC
West Lafayette, Indiana
Standard 2016-11-08 ValidFAA registration status code V: Valid registration. All codes
N733AV Cessna
172N
Fixed-wing, single engine Pdm Aviation LLC
Greencastle, Indiana
Standard 2016-11-08 ValidFAA registration status code V: Valid registration. All codes
N847LD Macarthur Cormia A
GLASAIR SH 2
Fixed-wing, single engine Kreigh INC
Mojave, California
Experimental 2016-11-08 ValidFAA registration status code V: Valid registration. All codes
N204DK Kirkwood Dennis H
RV-6A
Fixed-wing, single engine Individual owner
Wyoming
Experimental 2016-11-07 ValidFAA registration status code V: Valid registration. All codes
N2876G Champion
7ECA
Fixed-wing, single engine Co-owned owner
California
Standard 2016-11-07 ValidFAA registration status code V: Valid registration. All codes
N46255 Cessna
172I
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2016-11-07 ValidFAA registration status code V: Valid registration. All codes
N51EG Eric Gromala
VANS RV 6A
Fixed-wing, single engine Individual owner
California
Experimental 2016-11-07 ValidFAA registration status code V: Valid registration. All codes
N71444 Cessna
172M
Fixed-wing, single engine Rushville Flying Club INC
Rushville, Illinois
Standard 2016-11-07 ValidFAA registration status code V: Valid registration. All codes
N75146 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2016-11-07 ValidFAA registration status code V: Valid registration. All codes
N9452E Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2016-11-05 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.