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
N241GW Wheeler Gregory R
GLASAIR FT SUPER IIS
Fixed-wing, single engine Individual owner
Texas
Experimental 2016-05-06 ValidFAA registration status code V: Valid registration. All codes
N7013Q Cessna
172L
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2016-05-06 ValidFAA registration status code V: Valid registration. All codes
N9582H Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2016-05-06 ValidFAA registration status code V: Valid registration. All codes
N1019F Cessna
172N
Fixed-wing, single engine Fly By Aviation LLC
Sun Valley, California
Standard 2016-05-05 ValidFAA registration status code V: Valid registration. All codes
N6831H Cessna
172M
Fixed-wing, single engine Individual owner
Tennessee
Standard 2016-05-05 ValidFAA registration status code V: Valid registration. All codes
N113KR Piper
PA-28-151
Fixed-wing, single engine Ial CORP
Lewes, Delaware
Standard 2016-05-04 ValidFAA registration status code V: Valid registration. All codes
N303RF Piper
PA-28-161
Fixed-wing, single engine Region Flyers LLC
Valparaiso, Indiana
Standard 2016-05-04 ValidFAA registration status code V: Valid registration. All codes
N3159Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-05-04 ValidFAA registration status code V: Valid registration. All codes
N64575 Cessna
172P
Fixed-wing, single engine N64575 LLC
Cheyenne, Wyoming
Standard 2016-05-04 ValidFAA registration status code V: Valid registration. All codes
N7795D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2016-05-04 ValidFAA registration status code V: Valid registration. All codes
N789E Eaton Aviation Company
RV-4
Fixed-wing, single engine Unlimited Visibility LLC
Wilmington, Delaware
Experimental 2016-05-04 ValidFAA registration status code V: Valid registration. All codes
N4424A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2016-05-03 ValidFAA registration status code V: Valid registration. All codes
N6176D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Utah
Standard 2016-05-03 ValidFAA registration status code V: Valid registration. All codes
N50996 Cessna
150J
Fixed-wing, single engine Individual owner
Texas
Restricted 2016-05-02 ValidFAA registration status code V: Valid registration. All codes
N35673 Cessna
172I
Fixed-wing, single engine Individual owner
Washington
Standard 2016-04-27 ValidFAA registration status code V: Valid registration. All codes
N54972 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2016-04-27 ValidFAA registration status code V: Valid registration. All codes
N7268D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2016-04-27 ValidFAA registration status code V: Valid registration. All codes
N80105 Cessna
172M
Fixed-wing, single engine Individual owner
West Virginia
Standard 2016-04-27 ValidFAA registration status code V: Valid registration. All codes
N2465E Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2016-04-26 ValidFAA registration status code V: Valid registration. All codes
N385SC Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Montana
Standard 2016-04-26 ValidFAA registration status code V: Valid registration. All codes
N41801 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2016-04-26 ValidFAA registration status code V: Valid registration. All codes
N5345W Piper
PA-28
Fixed-wing, single engine Individual owner
Montana
Standard 2016-04-26 ValidFAA registration status code V: Valid registration. All codes
N7676Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Montana
Standard 2016-04-26 ValidFAA registration status code V: Valid registration. All codes
N28AG Globe
GC-1B
Fixed-wing, single engine Individual owner
Minnesota
Standard 2016-04-25 ValidFAA registration status code V: Valid registration. All codes
N46288 Cessna
172I
Fixed-wing, single engine Individual owner
Utah
Standard 2016-04-25 ValidFAA registration status code V: Valid registration. All codes
N9413H Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2016-04-25 ValidFAA registration status code V: Valid registration. All codes
N20071 Cessna
172M
Fixed-wing, single engine Limaoscar LLC
Boca Raton, Florida
Standard 2016-04-22 ValidFAA registration status code V: Valid registration. All codes
N7160L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
California
Standard 2016-04-22 ValidFAA registration status code V: Valid registration. All codes
N739ZZ Cessna
172N
Fixed-wing, single engine R & R Aero Services LLC
Eden Prairie, Minnesota
Standard 2016-04-21 ValidFAA registration status code V: Valid registration. All codes
N12261 Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2016-04-20 ValidFAA registration status code V: Valid registration. All codes
N24653 Beech
B19
Fixed-wing, single engine Individual owner
Oregon
Standard 2016-04-20 ValidFAA registration status code V: Valid registration. All codes
N518CA Cessna
172N
Fixed-wing, single engine Compass Aviation INC
Shelby, North Carolina
Standard 2016-04-20 ValidFAA registration status code V: Valid registration. All codes
N79991 Piper
PA-18-150
Fixed-wing, single engine Dykstra Robert P
Sioux Falls, South Dakota
Standard 2016-04-20 ValidFAA registration status code V: Valid registration. All codes
N9990V Cessna
172M
Fixed-wing, single engine Compass Aviation INC
Shelby, North Carolina
Standard 2016-04-20 ValidFAA registration status code V: Valid registration. All codes
N216AB Robinson Helicopter
R22 BETA
Helicopter Aarow Aircraft Leasing LLC
Dallas, Texas
Standard 2016-04-19 ValidFAA registration status code V: Valid registration. All codes
N3292Z Piper
PA-18
Fixed-wing, single engine Individual owner
Florida
Standard 2016-04-19 ValidFAA registration status code V: Valid registration. All codes
N83993 Piper
PA-28-161
Fixed-wing, single engine Brandywine Flight School
West Chester, Pennsylvania
Standard 2016-04-19 ValidFAA registration status code V: Valid registration. All codes
N9365H Cessna
172M
Fixed-wing, single engine Augusta Aviation INC
Agusta, Georgia
Standard 2016-04-19 ValidFAA registration status code V: Valid registration. All codes
N7561E Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2016-04-18 ValidFAA registration status code V: Valid registration. All codes
N9350D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-04-18 ValidFAA registration status code V: Valid registration. All codes
N3716P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-04-15 ValidFAA registration status code V: Valid registration. All codes
N4434J Piper
PA-28-140
Fixed-wing, single engine Carney Allen G
Weaubleau, Missouri
Standard 2016-04-15 ValidFAA registration status code V: Valid registration. All codes
N19614 Cessna
172L
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2016-04-14 ValidFAA registration status code V: Valid registration. All codes
N6632G Robert E Grayson
HOLLMANN HA-2-M
Rotorcraft Individual owner
Montana
Experimental 2016-04-14 ValidFAA registration status code V: Valid registration. All codes
N8718D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2016-04-14 ValidFAA registration status code V: Valid registration. All codes
N5039H Cessna
172M
Fixed-wing, single engine Big Mountain Aviation INC
Whitefish, Montana
Standard 2016-04-13 ValidFAA registration status code V: Valid registration. All codes
N5479R Cessna
172M
Fixed-wing, single engine Individual owner
Missouri
Standard 2016-04-13 ValidFAA registration status code V: Valid registration. All codes
N2814Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2016-04-12 ValidFAA registration status code V: Valid registration. All codes
N6552F Cessna
172N
Fixed-wing, single engine Air Planes LLC
Soddy Daisy, Tennessee
Standard 2016-04-12 ValidFAA registration status code V: Valid registration. All codes
N3010E Piper
PA-28-161
Fixed-wing, single engine Individual owner
Illinois
Standard 2016-04-11 ValidFAA registration status code V: Valid registration. All codes
N64254 Cessna
172M
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2016-04-11 ValidFAA registration status code V: Valid registration. All codes
N744 Piper
PA-18-150
Fixed-wing, single engine United States Dept of Agriculture Aviation
Cedar City, Utah
Standard 2016-04-11 ValidFAA registration status code V: Valid registration. All codes
N6018D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Michigan
Standard 2016-04-08 ValidFAA registration status code V: Valid registration. All codes
N715R Crupper Roger L
SUPER LONG EZ
Fixed-wing, single engine Withheld at owner's request
Experimental 2016-04-08 ValidFAA registration status code V: Valid registration. All codes
N13973 Piper
PA-18-150
Fixed-wing, single engine Rs Specialties LLC
Anchorage, Alaska
Standard 2016-04-07 ValidFAA registration status code V: Valid registration. All codes
N3471M Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2016-04-07 ValidFAA registration status code V: Valid registration. All codes
N41550 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Montana
Standard 2016-04-05 ValidFAA registration status code V: Valid registration. All codes
N5133T Champion
7GCAA
Fixed-wing, single engine Individual owner
Texas
Standard 2016-04-04 ValidFAA registration status code V: Valid registration. All codes
N733BE Cessna
172N
Fixed-wing, single engine Flying Particles INC
Livermore, California
Standard 2016-04-04 ValidFAA registration status code V: Valid registration. All codes
N6350D Cessna
172N
Fixed-wing, single engine Individual owner
New Jersey
Standard 2016-03-30 ValidFAA registration status code V: Valid registration. All codes
N46309 Cessna
172K
Fixed-wing, single engine Bell 47 Helicopters INC
Middletown, Delaware
Standard 2016-03-28 ValidFAA registration status code V: Valid registration. All codes
N6053D Piper
PA-20-150
Fixed-wing, single engine Individual owner
Washington
Standard 2016-03-28 ValidFAA registration status code V: Valid registration. All codes
N3573Z Piper
PA-18-150
Fixed-wing, single engine Blue Ice Aviation INC
Wasilla, Alaska
Standard 2016-03-23 ValidFAA registration status code V: Valid registration. All codes
N7251Q Cessna
172L
Fixed-wing, single engine Individual owner
Oregon
Standard 2016-03-23 ValidFAA registration status code V: Valid registration. All codes
N5995W Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Dakota
Standard 2016-03-22 ValidFAA registration status code V: Valid registration. All codes
N6984B Piper
PA-18-150
Fixed-wing, single engine Big Q Aviation CORP
Helena, Montana
Standard 2016-03-22 ValidFAA registration status code V: Valid registration. All codes
N9761P Piper
PA-18-150
Fixed-wing, single engine Big Q Aviation Corporation
Helena, Montana
Standard 2016-03-22 ValidFAA registration status code V: Valid registration. All codes
N12622 Cessna
172M
Fixed-wing, single engine Individual owner
Montana
Standard 2016-03-21 ValidFAA registration status code V: Valid registration. All codes
N264CA Cessna
172M
Fixed-wing, single engine Choice Aviation LLC
Hamilton, Montana
Standard 2016-03-21 ValidFAA registration status code V: Valid registration. All codes
N8091R Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2016-03-21 ValidFAA registration status code V: Valid registration. All codes
N9504W Piper
PA-28-140
Fixed-wing, single engine S&J Aviation LLC
Burlington, Washington
Standard 2016-03-21 ValidFAA registration status code V: Valid registration. All codes
N295BC Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Texas
Standard 2016-03-19 ValidFAA registration status code V: Valid registration. All codes
N5574M Aero Commander
100
Fixed-wing, single engine Co-owned owner
California
Standard 2016-03-19 ValidFAA registration status code V: Valid registration. All codes
N6752J Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2016-03-19 ValidFAA registration status code V: Valid registration. All codes
N7515R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2016-03-19 ValidFAA registration status code V: Valid registration. All codes
N2271T Aero Commander
100
Fixed-wing, single engine Individual owner
Arizona
Standard 2016-03-18 ValidFAA registration status code V: Valid registration. All codes
N75186 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2016-03-18 ValidFAA registration status code V: Valid registration. All codes
N5572U Piper
PA-28-140
Fixed-wing, single engine Poor Farmer Aviation LLC
Saint Marys, Ohio
Standard 2016-03-17 ValidFAA registration status code V: Valid registration. All codes
N6433R Piper
PA-28-140
Fixed-wing, single engine Gary R Kasper Motor Sales
Vassar, Michigan
Standard 2016-03-17 ValidFAA registration status code V: Valid registration. All codes
N5889W Piper
PA-28-150
Fixed-wing, single engine Individual owner
California
Standard 2016-03-16 ValidFAA registration status code V: Valid registration. All codes
N802WH Robinson Helicopter
R22 BETA
Helicopter Mansfield Heliflight
Milton, Vermont
Standard 2016-03-16 ValidFAA registration status code V: Valid registration. All codes
N739TC Cessna
172N
Fixed-wing, single engine Blue Skies Aviation Group LLC
Middleton, Idaho
Standard 2016-03-14 ValidFAA registration status code V: Valid registration. All codes
N20532 Cessna
172M
Fixed-wing, single engine Superhawk INC
Marcell, Minnesota
Standard 2016-03-11 ValidFAA registration status code V: Valid registration. All codes
N4302Z Piper
PA-18-150
Fixed-wing, single engine Sportsmans Air Service INC
Anchorage, Alaska
Standard 2016-03-11 ValidFAA registration status code V: Valid registration. All codes
N7116D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-03-11 ValidFAA registration status code V: Valid registration. All codes
N7798B Piper
PA-18A
Fixed-wing, single engine Individual owner
Colorado
Restricted 2016-03-09 ValidFAA registration status code V: Valid registration. All codes
N4496Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2016-03-07 ValidFAA registration status code V: Valid registration. All codes
N782SN Cessna
172M
Fixed-wing, single engine Kingdom Air Corps
Sutton, Alaska
Standard 2016-03-07 ValidFAA registration status code V: Valid registration. All codes
N8675R Hudson William B
VANS RV-6
Fixed-wing, single engine Individual owner
Arizona
Experimental 2016-03-07 ValidFAA registration status code V: Valid registration. All codes
N8746N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2016-03-07 ValidFAA registration status code V: Valid registration. All codes
N23JT Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2016-03-05 ValidFAA registration status code V: Valid registration. All codes
N2996X Cessna
177
Fixed-wing, single engine Eagle Sky Patrol INC
Deadwood, South Dakota
Standard 2016-03-05 ValidFAA registration status code V: Valid registration. All codes
N7461R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2016-03-05 ValidFAA registration status code V: Valid registration. All codes
N812BS Stephens Bruce
RV4
Fixed-wing, single engine Sb3 Asset Management LLC
Gilbert, Arizona
Experimental 2016-03-05 ValidFAA registration status code V: Valid registration. All codes
N1643P Piper
PA-22-150
Fixed-wing, single engine Pacer Air LLC
Wilmington, Ohio
Standard 2016-03-03 ValidFAA registration status code V: Valid registration. All codes
N209J Piper
PA-28-161
Fixed-wing, single engine Withheld at owner's request
Standard 2016-03-03 ValidFAA registration status code V: Valid registration. All codes
N1870V Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2016-03-02 ValidFAA registration status code V: Valid registration. All codes
N8465D Boyd Bruce
RV-6
Fixed-wing, single engine Co-owned owner
Oregon
Experimental 2016-03-02 ValidFAA registration status code V: Valid registration. All codes
N6397D Cessna
172N
Fixed-wing, single engine Glacier Cascade LLC
Vashon, Washington
Standard 2016-03-01 ValidFAA registration status code V: Valid registration. All codes
N79881 Cessna
172K
Fixed-wing, single engine Kevin Kingsley LLC
Lamar, Missouri
Standard 2016-03-01 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.