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
N2555B Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2017-08-02 ValidFAA registration status code V: Valid registration. All codes
N66PT Avions Pierre Robin
PIERRE ROBIN R2160
Fixed-wing, single engine Robin194 LLC
Prescott Valley, Arizona
Standard 2017-08-02 ValidFAA registration status code V: Valid registration. All codes
N8459R Piper
PA-28-140
Fixed-wing, single engine Rickenbacker Air LLC
Athens, Georgia
Standard 2017-08-02 ValidFAA registration status code V: Valid registration. All codes
N12343 Cessna
172M
Fixed-wing, single engine Albany Aviation Ny LLC
Nassau, New York
Standard 2017-08-01 ValidFAA registration status code V: Valid registration. All codes
N5444J Cessna
172N
Fixed-wing, single engine Hm Aviation LLC
Cape Fair, Missouri
Standard 2017-08-01 ValidFAA registration status code V: Valid registration. All codes
N6542H Cessna
172M
Fixed-wing, single engine Owens Flight Training LLC
Lafayette, Louisiana
Standard 2017-08-01 ValidFAA registration status code V: Valid registration. All codes
N9920V Cessna
172M
Fixed-wing, single engine Skywarrior Flight Training INC
Pensacola, Florida
Standard 2017-08-01 ValidFAA registration status code V: Valid registration. All codes
N113MS American Champion Aircraft
7GCBC
Fixed-wing, single engine Fly2Walk LLC
Loveland, Colorado
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N3522Q Cessna
172M
Fixed-wing, single engine Individual owner
Arizona
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N4875F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N5400J Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N6140J Piper
PA-28-151
Fixed-wing, single engine Individual owner
Indiana
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N739SH Cessna
172N
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N75950 Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N9935V Cessna
172M
Fixed-wing, single engine D & S Aviation LLC
Wilmington, Delaware
Standard 2017-07-31 ValidFAA registration status code V: Valid registration. All codes
N13076 Cessna
172M
Fixed-wing, single engine Individual owner
Kentucky
Standard 2017-07-28 ValidFAA registration status code V: Valid registration. All codes
N1869T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2017-07-28 ValidFAA registration status code V: Valid registration. All codes
N208AT Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2017-07-28 ValidFAA registration status code V: Valid registration. All codes
N4298L Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2017-07-28 ValidFAA registration status code V: Valid registration. All codes
N78463 Piper
PA-12
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2017-07-28 ValidFAA registration status code V: Valid registration. All codes
N96575 Cessna
172P
Fixed-wing, single engine Individual owner
California
Standard 2017-07-28 ValidFAA registration status code V: Valid registration. All codes
N172CJ Cessna
172K
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-07-27 ValidFAA registration status code V: Valid registration. All codes
N3898Q Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2017-07-27 ValidFAA registration status code V: Valid registration. All codes
N41ME Cessna
172N
Fixed-wing, single engine Flydreams Aircraft Group INC
Fort Lauderdale, Florida
Standard 2017-07-27 ValidFAA registration status code V: Valid registration. All codes
N593A Pitts Special
S-1C
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2017-07-27 ValidFAA registration status code V: Valid registration. All codes
N6717W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-07-27 ValidFAA registration status code V: Valid registration. All codes
N83447 Piper
PA-18-150
Fixed-wing, single engine Chandler Air Service INC
Chandler, Arizona
Standard 2017-07-27 ValidFAA registration status code V: Valid registration. All codes
N3568Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Iowa
Standard 2017-07-26 ValidFAA registration status code V: Valid registration. All codes
N3892Q Cessna
172L
Fixed-wing, single engine Kcn Aero Club INC
Overland Park, Kansas
Standard 2017-07-25 ValidFAA registration status code V: Valid registration. All codes
N5297Y Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2017-07-25 ValidFAA registration status code V: Valid registration. All codes
N8029N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2017-07-25 ValidFAA registration status code V: Valid registration. All codes
N2735P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2017-07-24 ValidFAA registration status code V: Valid registration. All codes
N3666T Taylorcraft Aviation Corp
F19
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-07-24 ValidFAA registration status code V: Valid registration. All codes
N44FD Piper
PA-23
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2017-07-24 ValidFAA registration status code V: Valid registration. All codes
N5032T Piper
PA-28-140
Fixed-wing, single engine Free Lutheran Association of Pilot Supporters INC
Plymouth, Minnesota
Standard 2017-07-24 ValidFAA registration status code V: Valid registration. All codes
N80470 Cessna
172M
Fixed-wing, single engine Coddiwomple LLC
Newberg, Oregon
Standard 2017-07-24 ValidFAA registration status code V: Valid registration. All codes
N8157N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2017-07-24 ValidFAA registration status code V: Valid registration. All codes
N3159E Cessna
172N
Fixed-wing, single engine Dinaland Aviation
Vernal, Utah
Standard 2017-07-21 ValidFAA registration status code V: Valid registration. All codes
N739QB Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2017-07-21 ValidFAA registration status code V: Valid registration. All codes
N5270H Cessna
172M
Fixed-wing, single engine R & D Aircraft INC
Jamestown, North Carolina
Standard 2017-07-19 ValidFAA registration status code V: Valid registration. All codes
N7665C Piper
PA-28-151
Fixed-wing, single engine Indian Hills Community College
Ottumwa, Iowa
Standard 2017-07-19 ValidFAA registration status code V: Valid registration. All codes
N106SM Casa Vincent Matthew
VANS RV-4
Fixed-wing, single engine Individual owner
Nevada
Experimental 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N114BC Cabe Robert D
WITTMAN TAILWIND W-8
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N20487 Cessna
172M
Fixed-wing, single engine Point To Point Air LLC
Arlington, Washington
Standard 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N22SD Cessna
177
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N3051W Piper
PA-28-161
Fixed-wing, single engine Wong Direction LLC
Lantana, Texas
Standard 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N3238Q Piper
PA-28-161
Fixed-wing, single engine Attitude and Configuration Indicator LLC
Bedford, Texas
Standard 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N5283J Cessna
172N
Fixed-wing, single engine Marianas Air Transfer INC
Tinian, Northern Mariana Islands
Standard 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N6319N Champion
7GCAA
Fixed-wing, single engine Individual owner
Idaho
Standard 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N673H Hollingworth Dale J
VANS RV-6A
Fixed-wing, single engine Individual owner
California
Experimental 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N776AW Piper
PA-18-150
Fixed-wing, single engine Kustatan Leasing LLC
Nikiski, Alaska
Standard 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N784GT Cessna
172N
Fixed-wing, single engine Marianas Air Transfer INC
Tinian, Northern Mariana Islands
Standard 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N9557W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2017-07-18 ValidFAA registration status code V: Valid registration. All codes
N1123E Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2017-07-17 ValidFAA registration status code V: Valid registration. All codes
N3359M Piper
PA-12
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2017-07-17 ValidFAA registration status code V: Valid registration. All codes
N560CP Passeno C E/Bowman A H
CHRISTAVIA MK 1
Fixed-wing, single engine Individual owner
Florida
Experimental 2017-07-17 ValidFAA registration status code V: Valid registration. All codes
N5990E Cessna
172N
Fixed-wing, single engine Maneuvering Speed INC
Wilmington, Delaware
Standard 2017-07-17 ValidFAA registration status code V: Valid registration. All codes
N7806G Cessna
172L
Fixed-wing, single engine Aircraft Management Services INC
Milton, Florida
Standard 2017-07-17 ValidFAA registration status code V: Valid registration. All codes
N1022B Piper
PA-18-150
Fixed-wing, single engine Kustatan Leasing LLC
Nikiski, Alaska
Restricted 2017-07-14 ValidFAA registration status code V: Valid registration. All codes
N2600Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2017-07-14 ValidFAA registration status code V: Valid registration. All codes
N5670U Piper
PA-28-140
Fixed-wing, single engine Nelson Bros Farms
Hector, Minnesota
Standard 2017-07-14 ValidFAA registration status code V: Valid registration. All codes
N737GE Cessna
172N
Fixed-wing, single engine Flying Neutrons LLC
Lebanon, Ohio
Standard 2017-07-14 ValidFAA registration status code V: Valid registration. All codes
N73934 Cessna
172N
Fixed-wing, single engine Individual owner
Washington
Standard 2017-07-13 ValidFAA registration status code V: Valid registration. All codes
N818VM Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2017-07-13 ValidFAA registration status code V: Valid registration. All codes
N22DD Davis Homer D
VANS RV 4
Fixed-wing, single engine Individual owner
North Dakota
Experimental 2017-07-12 ValidFAA registration status code V: Valid registration. All codes
N5766J Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2017-07-12 ValidFAA registration status code V: Valid registration. All codes
N20058 Cessna
172M
Fixed-wing, single engine Ballou Skies Aviation INC
Bucyrus, Ohio
Standard 2017-07-11 ValidFAA registration status code V: Valid registration. All codes
N5786F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2017-07-11 ValidFAA registration status code V: Valid registration. All codes
N7661F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alabama
Standard 2017-07-11 ValidFAA registration status code V: Valid registration. All codes
N2845Y Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2017-07-10 ValidFAA registration status code V: Valid registration. All codes
N5721W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2017-07-10 ValidFAA registration status code V: Valid registration. All codes
N1934H Piper
PA-28-161
Fixed-wing, single engine Individual owner
Missouri
Standard 2017-07-07 ValidFAA registration status code V: Valid registration. All codes
N7594F Champion
7GCBC
Fixed-wing, single engine Individual owner
Washington
Standard 2017-07-06 ValidFAA registration status code V: Valid registration. All codes
N62862 Cessna
172P
Fixed-wing, single engine Freeflight Aviation LLC
Allentown, New Jersey
Standard 2017-07-05 ValidFAA registration status code V: Valid registration. All codes
N36031 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Washington
Standard 2017-07-03 ValidFAA registration status code V: Valid registration. All codes
N4158D Piper
PA-18-150
Fixed-wing, single engine Boho LLC
Lewes, Delaware
Standard 2017-07-03 ValidFAA registration status code V: Valid registration. All codes
N9444H Cessna
172M
Fixed-wing, single engine Prestige Worldwide Aerospace LLC
Panama City, Florida
Standard 2017-07-03 ValidFAA registration status code V: Valid registration. All codes
N9698S Champion
7GCBC
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2017-07-03 ValidFAA registration status code V: Valid registration. All codes
N5946U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2017-06-30 ValidFAA registration status code V: Valid registration. All codes
N9493D Piper
PA-18-150
Fixed-wing, single engine Jack Browns Seaplane Base INC
Winter Haven, Florida
Standard 2017-06-30 ValidFAA registration status code V: Valid registration. All codes
N1020D Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-06-29 ValidFAA registration status code V: Valid registration. All codes
N1880G Champion
7GCBC
Fixed-wing, single engine School of Missionary Aviation Technology
Ionia, Michigan
Standard 2017-06-29 ValidFAA registration status code V: Valid registration. All codes
N35449 Cessna
172I
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2017-06-29 ValidFAA registration status code V: Valid registration. All codes
N78193 Globe
GC-1B
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2017-06-29 ValidFAA registration status code V: Valid registration. All codes
N9568V Cessna
172M
Fixed-wing, single engine Individual owner
Montana
Standard 2017-06-29 ValidFAA registration status code V: Valid registration. All codes
N999VL Piper
PA-22-160
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-06-29 ValidFAA registration status code V: Valid registration. All codes
N1717 Beausoleil Barry R
ACRO SPORT-1
Fixed-wing, single engine Individual owner
Indiana
Experimental 2017-06-28 ValidFAA registration status code V: Valid registration. All codes
N19797 Cessna
172M
Fixed-wing, single engine Individual owner
Arizona
Standard 2017-06-27 ValidFAA registration status code V: Valid registration. All codes
N61699 Cessna
172M
Fixed-wing, single engine Individual owner
Minnesota
Standard 2017-06-27 ValidFAA registration status code V: Valid registration. All codes
N9926Y Champion
7GCB
Fixed-wing, single engine Co-owned owner
Maine
Multiple 2017-06-27 ValidFAA registration status code V: Valid registration. All codes
N3858Z Piper
PA-18-150
Fixed-wing, single engine Great Basin Aviation LLC
Eagle River, Alaska
Standard 2017-06-26 ValidFAA registration status code V: Valid registration. All codes
N60JK Hiner K J/Hiner J S
HINER MURPHY REBEL
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2017-06-26 ValidFAA registration status code V: Valid registration. All codes
N6175G Cessna
172N
Fixed-wing, single engine Kimber 123 Holdings LLC
Morgantown, West Virginia
Standard 2017-06-26 ValidFAA registration status code V: Valid registration. All codes
N73535 Cessna
172M
Fixed-wing, single engine Co-owned owner
New York
Standard 2017-06-26 ValidFAA registration status code V: Valid registration. All codes
N9694V Cessna
172M
Fixed-wing, single engine Individual owner
South Carolina
Standard 2017-06-26 ValidFAA registration status code V: Valid registration. All codes
N7856G Cessna
172L
Fixed-wing, single engine Individual owner
South Carolina
Standard 2017-06-23 ValidFAA registration status code V: Valid registration. All codes
N34JT Tison
PITTS S-1C
Fixed-wing, single engine Co-owned owner
Illinois
Experimental 2017-06-22 ValidFAA registration status code V: Valid registration. All codes
N4566R Piper
PA-28-140
Fixed-wing, single engine Media Stew LLC
Carson City, Nevada
Standard 2017-06-22 ValidFAA registration status code V: Valid registration. All codes
N611EA Cessna
172N
Fixed-wing, single engine Endeavour Flight Training INC
Opa Locka, Florida
Standard 2017-06-22 ValidFAA registration status code V: Valid registration. All codes
N8412L Cessna
172I
Fixed-wing, single engine Addison Flying LLC
Addison, New York
Standard 2017-06-22 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.