The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 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
N5263W Piper
PA-28
Fixed-wing, single engine Cjco Holdings LLC
Venus, Texas
Standard 2025-01-16 ValidFAA registration status code V: Valid registration. All codes
N7013G Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2025-01-16 ValidFAA registration status code V: Valid registration. All codes
N8252N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2025-01-16 ValidFAA registration status code V: Valid registration. All codes
N1251U Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N1270U Cessna
172M
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N156MT Taylor Merwyn
MARQUART MA5 CHARGER
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N236RV Larash Richard C
RV6A
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N24978 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Washington
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N2860Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N32574 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Texas
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N46521 Cessna
172K
Fixed-wing, single engine Shadow Yacht LLC
Reno, Nevada
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N5463W Piper
PA-28-160
Fixed-wing, single engine Angels Envy Aviation LLC
Denison, Texas
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N555RS Beech
23
Fixed-wing, single engine R&M Aviation LLC
Austell, Georgia
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N56828 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N5819U Piper
PA-28-140
Fixed-wing, single engine On Final Aviation LLC
Brookland, Arkansas
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N6027D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N61577 Cessna
172M
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N739JE Cessna
172N
Fixed-wing, single engine Mountain South Aviation LLC
Telford, Tennessee
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N7679G Cessna
172L
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N12919 Cessna
172M
Fixed-wing, single engine Gibson Aviation Services LLC
Menomonie, Wisconsin
Standard 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N1637G Champion
7KCAB
Fixed-wing, single engine Individual owner
Louisiana
Standard 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N19956 Cessna
172M
Fixed-wing, single engine Gulfstream Boats INC
Cortez, Florida
Standard 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N205DT Atzenhoffer Billy W
RV-4
Fixed-wing, single engine Co-owned owner
Wisconsin
Experimental 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N250CH Payne/Foster
GLASAIR
Fixed-wing, single engine Individual owner
Florida
Experimental 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N259RP American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N3897Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N3972P Piper
PA-18-150
Fixed-wing, single engine Sc Super Cub LLC
Rosharon, Texas
Multiple 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N40810 Piper
PA-28-151
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Standard 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N804BL Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N8102S Piper
PA-28-161
Fixed-wing, single engine Jl Holdings Ntx LLC
Flower Mound, Texas
Standard 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N92026 Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N116CR Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2025-01-13 ValidFAA registration status code V: Valid registration. All codes
N144PJ Cammons James G
RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-01-13 ValidFAA registration status code V: Valid registration. All codes
N4390J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-01-13 ValidFAA registration status code V: Valid registration. All codes
N6296W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-01-13 ValidFAA registration status code V: Valid registration. All codes
N739TT Cessna
172N
Fixed-wing, single engine Tongass Flyers LLC
Ward Cove, Alaska
Standard 2025-01-13 ValidFAA registration status code V: Valid registration. All codes
N82005 Piper
PA-28-161
Fixed-wing, single engine S&H Leasing LLC
Sarasota, Florida
Standard 2025-01-13 ValidFAA registration status code V: Valid registration. All codes
N8847F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-01-13 ValidFAA registration status code V: Valid registration. All codes
N30145 Cessna
177
Fixed-wing, single engine Keno Aviation LLC
Marshfield, Massachusetts
Standard 2025-01-10 ValidFAA registration status code V: Valid registration. All codes
N756AW Cessna
172N
Fixed-wing, single engine Lincoln Skyways INC
Lincoln, California
Standard 2025-01-10 ValidFAA registration status code V: Valid registration. All codes
N1041U Bucker Jungmann
C.A.S.A. 1.131
Fixed-wing, single engine Withheld at owner's request
Experimental 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N13BW Walbeck William M
RV-6
Fixed-wing, single engine Individual owner
Virginia
Experimental 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N2192W Piper
PA-22-150
Fixed-wing, single engine Withheld at owner's request
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N2355Y Cessna
177
Fixed-wing, single engine Schwarz Enterprises LLC
Huntington Beach, California
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N253A Piper
PA-23
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N2972C Piper
PA-28-161
Fixed-wing, single engine Hoosier Aviation LLC
Terre Haute, Indiana
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N4472F Piper
PA-28-151
Fixed-wing, single engine A&J Aircraft Leasing INC
Burlington, Colorado
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N4969G Cessna
172N
Fixed-wing, single engine Sanford Aircraft LLC
Winter Springs, Florida
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N5677U Piper
PA-28-140
Fixed-wing, single engine Golden Age Aviation LLC
Naperville, Illinois
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N7503R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Puerto Rico
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N82504 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N8278E Cessna
172N
Fixed-wing, single engine Equinoxx Flight Systems LLC
Lawrenceville, Georgia
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N98021 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N12474 Cessna
172M
Fixed-wing, single engine Tail No N12474 LLC
Brewton, Alabama
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N24LT Cessna
172P
Fixed-wing, single engine Pinestate Aviation LLC
Glenburn, Maine
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N285JS Cessna
172N
Fixed-wing, single engine Flytruckeetahoe INC
Truckee, California
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N312TS American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N4096Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
California
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N4893G Cessna
172N
Fixed-wing, single engine Boldflight LLC
Greenwood, Indiana
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N4998G Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Dakota
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N7489G Cessna
172K
Fixed-wing, single engine Cloud Fleet Aviation LLC
Fort Lauderdale, Florida
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N7702D Piper
PA-22-150
Fixed-wing, single engine Indian Creek Farms LLC
Eureka, Montana
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N79133 Cessna
172K
Fixed-wing, single engine Rotate LLC
Eden Prairie, Minnesota
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N8352R Piper
PA-28-140
Fixed-wing, single engine Quantum Aviation LLC
Wauna, Washington
Standard 2025-01-07 ValidFAA registration status code V: Valid registration. All codes
N1696G Champion
7GCAA
Fixed-wing, single engine Co-owned owner
Florida
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N46552 Cessna
172K
Fixed-wing, single engine Cache Rentals 401K P S P LLC
Greeley, Colorado
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N55166 Piper
PA-28-140
Fixed-wing, single engine Volando LLC
Columbia, Missouri
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N74990 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Florida
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N82718 Piper
PA-18-150
Fixed-wing, single engine Hanley Company LLC
Littleton, Colorado
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N8493F Piper
PA-28-151
Fixed-wing, single engine Charles City Aeronautics INC
Charles City, Iowa
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N4867D Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2025-01-04 ValidFAA registration status code V: Valid registration. All codes
N13182 Cessna
172M
Fixed-wing, single engine Spillman Aviation LLC
Colorado Springs, Colorado
Standard 2025-01-03 ValidFAA registration status code V: Valid registration. All codes
N1728J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-01-03 ValidFAA registration status code V: Valid registration. All codes
N24153 Cessna
172P
Fixed-wing, single engine Mt Vernon Airport Authority
Mount Vernon, Illinois
Standard 2025-01-03 ValidFAA registration status code V: Valid registration. All codes
N3329M Mcduffie Wade H
VANS RV4
Fixed-wing, single engine Individual owner
Florida
Experimental 2025-01-03 ValidFAA registration status code V: Valid registration. All codes
N4422R Cessna
172M
Fixed-wing, single engine N4422R LLC
Miami, Florida
Standard 2025-01-03 ValidFAA registration status code V: Valid registration. All codes
N5GN Nelson
RV-3
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-01-03 ValidFAA registration status code V: Valid registration. All codes
N8491F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-01-03 ValidFAA registration status code V: Valid registration. All codes
N4677R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-01-02 ValidFAA registration status code V: Valid registration. All codes
N5934V Piper
PA-28-161
Fixed-wing, single engine Luvsflying Flight Training LLC
Staten Island, New York
Standard 2025-01-02 ValidFAA registration status code V: Valid registration. All codes
N6926W Piper
PA-28-140
Fixed-wing, single engine Cola Air LLC
Irmo, South Carolina
Standard 2025-01-02 ValidFAA registration status code V: Valid registration. All codes
N7395J Piper
PA-28-140
Fixed-wing, single engine Ohm Aviation LLC
Wmca, Nevada
Standard 2025-01-02 ValidFAA registration status code V: Valid registration. All codes
N97HP Aviat Aircraft Inc
A-1B
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2025-01-02 ValidFAA registration status code V: Valid registration. All codes
N361WE Piper
PA-28-140
Fixed-wing, single engine On da Way Exotic Car Rentals LLC
Fort Lauderdale, Florida
Standard 2024-12-31 ValidFAA registration status code V: Valid registration. All codes
N55842 Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2024-12-31 ValidFAA registration status code V: Valid registration. All codes
N7520R Piper
PA-28-140
Fixed-wing, single engine N7396W LLC
Coeymans Hollow, New York
Standard 2024-12-31 ValidFAA registration status code V: Valid registration. All codes
N3688M Piper
PA-12
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2024-12-30 ValidFAA registration status code V: Valid registration. All codes
N738BE Cessna
172N
Fixed-wing, single engine Seraphim Aviation LLC
Gretna, Nebraska
Standard 2024-12-30 ValidFAA registration status code V: Valid registration. All codes
N7989G Cessna
172L
Fixed-wing, single engine Individual owner
New York
Standard 2024-12-30 ValidFAA registration status code V: Valid registration. All codes
N7715G Cessna
172L
Fixed-wing, single engine Airborne LLC
Wilmington, Delaware
Standard 2024-12-28 ValidFAA registration status code V: Valid registration. All codes
N144MC Piper
PA-28-140
Fixed-wing, single engine 450 Dancer LLC
Benton Harbor, Michigan
Standard 2024-12-27 ValidFAA registration status code V: Valid registration. All codes
N333PK Kormylo Philip C
RV6-A
Fixed-wing, single engine Individual owner
Idaho
Experimental 2024-12-27 ValidFAA registration status code V: Valid registration. All codes
N503MA Cessna
172M
Fixed-wing, single engine Hobart Aviation INC
Akron, Ohio
Standard 2024-12-27 ValidFAA registration status code V: Valid registration. All codes
N8453D Piper
PA-22-160
Fixed-wing, single engine Individual owner
South Dakota
Standard 2024-12-27 ValidFAA registration status code V: Valid registration. All codes
N6676J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2024-12-26 ValidFAA registration status code V: Valid registration. All codes
N136DK Noel Simmons
VANS RV-6A
Fixed-wing, single engine Individual owner
Kansas
Experimental 2024-12-23 ValidFAA registration status code V: Valid registration. All codes
N2329L Beech
23
Fixed-wing, single engine Co-owned owner
New York
Standard 2024-12-23 ValidFAA registration status code V: Valid registration. All codes
N172PK Cessna
172N
Fixed-wing, single engine Kcsi Aerial Patrol INC
Bakersfield, California
Standard 2024-12-21 ValidFAA registration status code V: Valid registration. All codes
N329P Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Nebraska
Standard 2024-12-21 ValidFAA registration status code V: Valid registration. All codes
N41327 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2024-12-21 ValidFAA registration status code V: Valid registration. All codes
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Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.