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
N7676W Piper
PA-28-180
Fixed-wing, single engine Individual owner
Texas
Standard 2023-09-24 ValidFAA registration status code V: Valid registration. All codes
N12751 Cessna
172M
Fixed-wing, single engine Wyatt Trost LLC
Concordia, Kansas
Standard 2023-09-23 ValidFAA registration status code V: Valid registration. All codes
N167GT Socata
TB 9 TAMPICO
Fixed-wing, single engine Preferred Procurement LLC
Sheridan, Wyoming
Standard 2023-09-23 ValidFAA registration status code V: Valid registration. All codes
N1738T Piper
PA-28-140
Fixed-wing, single engine Clinton 83 Aviation LLC
La Place, Louisiana
Standard 2023-09-23 ValidFAA registration status code V: Valid registration. All codes
N4087P Piper
PA-23-160
Fixed-wing, multi-engine Co-owned owner
Pennsylvania
Standard 2023-09-23 ValidFAA registration status code V: Valid registration. All codes
N500BS Cessna
172L
Fixed-wing, single engine Central Aircraft Sales and Leasing LLC
Columbia, Missouri
Standard 2023-09-23 ValidFAA registration status code V: Valid registration. All codes
N68500 Bellanca
7GCBC
Fixed-wing, single engine Air Dakota Flite INC
Hettinger, North Dakota
Standard 2023-09-23 ValidFAA registration status code V: Valid registration. All codes
N102GW Galloway/Ward
RV-4
Fixed-wing, single engine Individual owner
Oregon
Experimental 2023-09-22 ValidFAA registration status code V: Valid registration. All codes
N5953W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-09-22 ValidFAA registration status code V: Valid registration. All codes
N3326T Cessna
177
Fixed-wing, single engine Individual owner
Florida
Standard 2023-09-21 ValidFAA registration status code V: Valid registration. All codes
N54184 Cessna
172P
Fixed-wing, single engine Individual owner
Texas
Standard 2023-09-21 ValidFAA registration status code V: Valid registration. All codes
N54478 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2023-09-21 ValidFAA registration status code V: Valid registration. All codes
N7049Q Cessna
172L
Fixed-wing, single engine Vortex Aero LLC
Lakeland, Florida
Standard 2023-09-21 ValidFAA registration status code V: Valid registration. All codes
N1645G Champion
7GCAA
Fixed-wing, single engine Nashua Aerial Advertising LLC
Nashua, New Hampshire
Standard 2023-09-20 ValidFAA registration status code V: Valid registration. All codes
N442TC Crawford Thomas A
RV9A
Fixed-wing, single engine Individual owner
Florida
Experimental 2023-09-20 ValidFAA registration status code V: Valid registration. All codes
N5062V Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
Florida
Standard 2023-09-20 ValidFAA registration status code V: Valid registration. All codes
N5346E Cessna
172N
Fixed-wing, single engine Osprey Holding Company LLC
Foley, Alabama
Standard 2023-09-20 ValidFAA registration status code V: Valid registration. All codes
N5730W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-09-20 ValidFAA registration status code V: Valid registration. All codes
N692MA Cessna
177
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-09-20 ValidFAA registration status code V: Valid registration. All codes
N80896 Cessna
172M
Fixed-wing, single engine Dsr-Cherokee 180 LLC
Dallas, Texas
Standard 2023-09-20 ValidFAA registration status code V: Valid registration. All codes
N16410 Piper
PA-28-140
Fixed-wing, single engine Cherokee Five LLC
Bakersfield, California
Standard 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N2227Z Piper
PA-28-161
Fixed-wing, single engine Two Brothers Acquisitions LLC DBA
Perris, California
Standard 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N32486 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Texas
Standard 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N4237J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N5029E Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N6399F Yarnell Robert L
REBEL
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N65730 Cessna
172P
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N7043Q Cessna
172L
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N739UN Cessna
172N
Fixed-wing, single engine Fly White Cloud LLC
Lake Havasu City, Arizona
Standard 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N75187 Piper
PA-28-151
Fixed-wing, single engine N75187 LLC
Fulton, Missouri
Standard 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N9671V Cessna
172M
Fixed-wing, single engine Skywarrior Flight Training LLC
Pensacola, Florida
Standard 2023-09-19 ValidFAA registration status code V: Valid registration. All codes
N211MH Robinson Helicopter
R22 BETA
Helicopter Wings Over Texas Holdings LLC
Denton, Texas
Standard 2023-09-18 ValidFAA registration status code V: Valid registration. All codes
N35719 Cessna
172I
Fixed-wing, single engine Individual owner
Nebraska
Standard 2023-09-18 ValidFAA registration status code V: Valid registration. All codes
N4907Z Piper
PA-22-108
Fixed-wing, single engine Individual owner
Colorado
Standard 2023-09-18 ValidFAA registration status code V: Valid registration. All codes
N5115T Champion
7GCAA
Fixed-wing, single engine Turkey Creek Aviation and Helicopter Service LLC
Uvalde, Texas
Standard 2023-09-18 ValidFAA registration status code V: Valid registration. All codes
N9870G Cessna
172L
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-09-18 ValidFAA registration status code V: Valid registration. All codes
N101FD Beech
19A
Fixed-wing, single engine Lakala Aviation INC
Vicksburg, Michigan
Standard 2023-09-17 ValidFAA registration status code V: Valid registration. All codes
N63907 Piper
PA-18-150
Fixed-wing, single engine Brad & Jill Janecke LLC
Pierre, South Dakota
Standard 2023-09-17 ValidFAA registration status code V: Valid registration. All codes
N94KD Dannenberg Kenneth H
CAVALIER 102.5
Fixed-wing, single engine Individual owner
Michigan
Experimental 2023-09-17 ValidFAA registration status code V: Valid registration. All codes
N1068F Cessna
172N
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2023-09-16 ValidFAA registration status code V: Valid registration. All codes
N2289M Piper
PA-28-161
Fixed-wing, single engine Nationwide Aviation LLC
Hudson Oaks, Texas
Standard 2023-09-16 ValidFAA registration status code V: Valid registration. All codes
N33575 Piper
PA-28-151
Fixed-wing, single engine Nationwide Aviation LLC
Hudson Oaks, Texas
Standard 2023-09-16 ValidFAA registration status code V: Valid registration. All codes
N6952W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-09-16 ValidFAA registration status code V: Valid registration. All codes
N8891V Cessna
172M
Fixed-wing, single engine Propel Air LLC
Pottstown, Pennsylvania
Standard 2023-09-16 ValidFAA registration status code V: Valid registration. All codes
N1745T Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2023-09-15 ValidFAA registration status code V: Valid registration. All codes
N2383P Piper
PA-22-150
Fixed-wing, single engine Jkr7 LLC
The Dalles, Oregon
Standard 2023-09-15 ValidFAA registration status code V: Valid registration. All codes
N26071 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2023-09-15 ValidFAA registration status code V: Valid registration. All codes
N5065X Champion
7KCAB
Fixed-wing, single engine Wallace Aviation INC
Wallace, Nebraska
Standard 2023-09-15 ValidFAA registration status code V: Valid registration. All codes
N64TZ Piper
PA-28-161
Fixed-wing, single engine Chapel Hill Flying Club DBA
Sanford, North Carolina
Standard 2023-09-15 ValidFAA registration status code V: Valid registration. All codes
N733LP Cessna
172N
Fixed-wing, single engine Dg Aviation Services INC
Merritt Island, Florida
Standard 2023-09-15 ValidFAA registration status code V: Valid registration. All codes
N26353 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Florida
Standard 2023-09-14 ValidFAA registration status code V: Valid registration. All codes
N5944W Piper
PA-28-160
Fixed-wing, single engine Ferguson Robert C
Cornelia, Georgia
Standard 2023-09-14 ValidFAA registration status code V: Valid registration. All codes
N65758 Cessna
172P
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2023-09-14 ValidFAA registration status code V: Valid registration. All codes
N1137U Cessna
172M
Fixed-wing, single engine Foscap Air LLC
Las Vegas, Nevada
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N1388R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Trybe LLC
Frisco, Texas
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N15360 Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N1977F Cessna
172N
Fixed-wing, single engine Jeffery & Weiss Holdings LLC
Long Beach, California
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N19910 Cessna
172M
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N3319M Piper
PA-12
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N3404Z Piper
PA-22-160
Fixed-wing, single engine Devils Lake Aero Repair INC
Devils Lake, North Dakota
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N3961P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Utah
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N431SM Mccoy John D
RV-9A
Fixed-wing, single engine Individual owner
California
Experimental 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N456WM Mustaikis S/Wright A
WRIGHT MUSTAIKISRV6A
Fixed-wing, single engine Individual owner
Alabama
Experimental 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N4739D Cessna
172N
Fixed-wing, single engine Muddy Creek Aviation LLC
Dayton, Virginia
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N5688W Piper
PA-28-160
Fixed-wing, single engine Serendipity Rentals LLC
Denver, Colorado
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N5806L American
AA-5
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N5839L American
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N6175Z Piper
PA-25
Fixed-wing, single engine Spot-Air LLC
Burlington, Texas
Restricted 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N737EG Cessna
172N
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N79002 Cessna
172K
Fixed-wing, single engine Fremont Aviation INC
Fremont, Nebraska
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N8066N Piper
PA-28-140
Fixed-wing, single engine Southern Air Services LLC
Myakka City, Florida
Standard 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N84569 Cessna
172K
Fixed-wing, single engine Individual owner
Wisconsin
Restricted 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N86KY Young Kenneth D
MA-5 CHARGER
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2023-09-13 ValidFAA registration status code V: Valid registration. All codes
N1004P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Maryland
Standard 2023-09-12 ValidFAA registration status code V: Valid registration. All codes
N40823 Piper
PA-28-140
Fixed-wing, single engine Ashley Aviatrix LLC
Atlanta, Georgia
Standard 2023-09-12 ValidFAA registration status code V: Valid registration. All codes
N5709F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2023-09-12 ValidFAA registration status code V: Valid registration. All codes
N5775E Cessna
150
Fixed-wing, single engine Individual owner
Standard 2023-09-12 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N5997W Piper
PA-28-140
Fixed-wing, single engine Wedgewood Ventures LLC
Missoula, Montana
Standard 2023-09-12 ValidFAA registration status code V: Valid registration. All codes
N763WA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2023-09-12 ValidFAA registration status code V: Valid registration. All codes
N9121D Piper
PA-18A 150
Fixed-wing, single engine Moxieair LLC
Baldwin, Wisconsin
Multiple 2023-09-12 ValidFAA registration status code V: Valid registration. All codes
N9593V Cessna
172M
Fixed-wing, single engine Co-owned owner
West Virginia
Standard 2023-09-12 ValidFAA registration status code V: Valid registration. All codes
N139G Griffith-Thorp
T-18
Fixed-wing, single engine Individual owner
Arizona
Experimental 2023-09-11 ValidFAA registration status code V: Valid registration. All codes
N8234V Piper
PA-28-161
Fixed-wing, single engine Innoutaero LLC
Stockton, California
Standard 2023-09-11 ValidFAA registration status code V: Valid registration. All codes
N2369Y Cessna
177
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-09-10 ValidFAA registration status code V: Valid registration. All codes
N5156J Cessna
172N
Fixed-wing, single engine Wings Over la Aviation LLC
West Hills, California
Standard 2023-09-10 ValidFAA registration status code V: Valid registration. All codes
N5625U Piper
PA-28-140
Fixed-wing, single engine Skorina Air LLC
Walla Walla, Washington
Standard 2023-09-10 ValidFAA registration status code V: Valid registration. All codes
N83516 Piper
PA-18-150
Fixed-wing, single engine Airo LLC
Belmont, Wisconsin
Standard 2023-09-10 ValidFAA registration status code V: Valid registration. All codes
N9TA Piper
PA-28-140
Fixed-wing, single engine Rhynette Airways LLC
Key Largo, Florida
Standard 2023-09-10 ValidFAA registration status code V: Valid registration. All codes
N40856 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-09-09 ValidFAA registration status code V: Valid registration. All codes
N470FS Cessna
172M
Fixed-wing, single engine Custom Air International LLC
Homestead, Florida
Standard 2023-09-09 ValidFAA registration status code V: Valid registration. All codes
N61684 Cessna
172M
Fixed-wing, single engine Odyssey Aircraft LLC
Topeka, Kansas
Standard 2023-09-09 ValidFAA registration status code V: Valid registration. All codes
N9731U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2023-09-09 ValidFAA registration status code V: Valid registration. All codes
N2617Z Buchan James F
LONG-EZ
Fixed-wing, single engine Individual owner
Indiana
Experimental 2023-09-08 ValidFAA registration status code V: Valid registration. All codes
N3925C Scott R Cleeves
BISON 21
Fixed-wing, single engine Individual owner
Alaska
Experimental 2023-09-08 ValidFAA registration status code V: Valid registration. All codes
N5891U Piper
PA-28-140
Fixed-wing, single engine 2Dwh LLC
Katy, Texas
Standard 2023-09-08 ValidFAA registration status code V: Valid registration. All codes
N6162W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2023-09-08 ValidFAA registration status code V: Valid registration. All codes
N112PA Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-09-07 ValidFAA registration status code V: Valid registration. All codes
N19AW Bellanca
7KCAB
Fixed-wing, single engine Fildes Robert D
Saint Charles, Missouri
Standard 2023-09-07 ValidFAA registration status code V: Valid registration. All codes
N2306P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2023-09-07 ValidFAA registration status code V: Valid registration. All codes
N3239Z Piper
PA-22-150
Fixed-wing, single engine Roach Aviation LLC
Longview, Texas
Standard 2023-09-07 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.