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
N43325 Piper
PA-28-140
Fixed-wing, single engine Air Ventures Flying School LLC
Smithfield, Rhode Island
Standard 2024-01-05 ValidFAA registration status code V: Valid registration. All codes
N78095 Cessna
172K
Fixed-wing, single engine Individual owner
California
Standard 2024-01-05 ValidFAA registration status code V: Valid registration. All codes
N80LS Piper
PA-18-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-01-05 ValidFAA registration status code V: Valid registration. All codes
N1765T Piper
PA-28-140
Fixed-wing, single engine Flyhome Aviation LLC
Miami, Oklahoma
Standard 2024-01-04 ValidFAA registration status code V: Valid registration. All codes
N270Z Love Leslie G Jr
ZENITH
Fixed-wing, single engine Individual owner
Alabama
Experimental 2024-01-04 ValidFAA registration status code V: Valid registration. All codes
N2959X Cessna
177
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-01-04 ValidFAA registration status code V: Valid registration. All codes
N4364A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-01-04 ValidFAA registration status code V: Valid registration. All codes
N7721J Martin Richard J
VANS RV-7A
Fixed-wing, single engine Jgm Aviation LLC
Spring, Texas
Experimental 2024-01-04 ValidFAA registration status code V: Valid registration. All codes
N9971D Piper
PA-22-160
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-01-04 ValidFAA registration status code V: Valid registration. All codes
N1039X Piper
PA-28-140
Fixed-wing, single engine Silvered Wings LLC
Howell, Michigan
Standard 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N15851 Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N1663P Piper
PA-22
Fixed-wing, single engine Individual owner
California
Standard 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N1951P Piper
PA-18A 150
Fixed-wing, single engine Beck Aviation LLC
Fort Myers, Florida
Restricted 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N311RA S.O.C.A.T.A.
RALLYE 150 ST
Fixed-wing, single engine Flight Tech INC
Arlington, Washington
Standard 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N456DP Petrosino David V
COZY
Fixed-wing, single engine Co-owned owner
Oregon
Experimental 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N7309K Piper
PA-20
Fixed-wing, single engine Stanley Bryan D
Paso Robles, California
Standard 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N8620D Piper
PA-22-160
Fixed-wing, single engine Mid Atlantic Air Museum
Reading, Pennsylvania
Standard 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N885SA Omf
OMF-100-160
Fixed-wing, single engine Individual owner
Louisiana
Standard 2024-01-03 ValidFAA registration status code V: Valid registration. All codes
N289SR Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2024-01-02 ValidFAA registration status code V: Valid registration. All codes
N7576D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2024-01-02 ValidFAA registration status code V: Valid registration. All codes
N1833P Piper
PA-22
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2024-01-01 ValidFAA registration status code V: Valid registration. All codes
N55790 Piper
PA-28-140
Fixed-wing, single engine Buzzard Aviation LLC
Pace, Florida
Standard 2024-01-01 ValidFAA registration status code V: Valid registration. All codes
N63456 Cessna
172P
Fixed-wing, single engine Ace of Spades Aviation LLC
Las Vegas, Nevada
Standard 2024-01-01 ValidFAA registration status code V: Valid registration. All codes
N9192D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2024-01-01 ValidFAA registration status code V: Valid registration. All codes
N3202S Bieber Barry E
GLASAIR II-S RG
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2023-12-31 ValidFAA registration status code V: Valid registration. All codes
N4261C Bucker Jungmann
C.A.S.A. 1.131
Fixed-wing, single engine Individual owner
Florida
Experimental 2023-12-31 ValidFAA registration status code V: Valid registration. All codes
N5176T Champion
7GCAA
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-12-31 ValidFAA registration status code V: Valid registration. All codes
N5601G Varga Aircraft Corp.
2150A
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2023-12-31 ValidFAA registration status code V: Valid registration. All codes
N6076W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-12-31 ValidFAA registration status code V: Valid registration. All codes
N607EA Piper
PA-28-161
Fixed-wing, single engine Blue Horizons Flying Club INC
Perrysburg, Ohio
Standard 2023-12-31 ValidFAA registration status code V: Valid registration. All codes
N9950Y Champion
7GCB
Fixed-wing, single engine Individual owner
South Dakota
Standard 2023-12-31 ValidFAA registration status code V: Valid registration. All codes
N301ST Piper
PA-28-140
Fixed-wing, single engine Technical Education Services INC
Virginia Beach, Virginia
Standard 2023-12-30 ValidFAA registration status code V: Valid registration. All codes
N800FW Piper
PA-28-161
Fixed-wing, single engine Paphos Airways LLC
Farmingdale, New York
Standard 2023-12-30 ValidFAA registration status code V: Valid registration. All codes
N84809 Cessna
172K
Fixed-wing, single engine Dsr-Cherokee 180 LLC
Dallas, Texas
Standard 2023-12-30 ValidFAA registration status code V: Valid registration. All codes
N9501D Piper
PA-22-160
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-12-30 ValidFAA registration status code V: Valid registration. All codes
N20208 Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2023-12-29 ValidFAA registration status code V: Valid registration. All codes
N734CS Cessna
172N
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-12-29 ValidFAA registration status code V: Valid registration. All codes
N1691G Champion
7GCBC
Fixed-wing, single engine Individual owner
California
Standard 2023-12-28 ValidFAA registration status code V: Valid registration. All codes
N345KR Cessna
172M
Fixed-wing, single engine Blue Sky Aviation Cayman INC
Wilmington, Delaware
Standard 2023-12-28 ValidFAA registration status code V: Valid registration. All codes
N5190T Champion
7GCAA
Fixed-wing, single engine Mhe Aviation LLC
Las Vegas, Nevada
Standard 2023-12-28 ValidFAA registration status code V: Valid registration. All codes
N6098W Piper
PA-28-140
Fixed-wing, single engine Fall Line Aviation LLC
Augusta, Georgia
Standard 2023-12-28 ValidFAA registration status code V: Valid registration. All codes
N6962W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Experimental 2023-12-28 ValidFAA registration status code V: Valid registration. All codes
N1219A Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Restricted 2023-12-27 ValidFAA registration status code V: Valid registration. All codes
N12935 Cessna
172M
Fixed-wing, single engine Ray Aviation LLC
Burkett, Texas
Standard 2023-12-27 ValidFAA registration status code V: Valid registration. All codes
N1872T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-12-27 ValidFAA registration status code V: Valid registration. All codes
N2410E Cessna
172N
Fixed-wing, single engine Kingsky Flight Academy LLC
Lakeland, Florida
Standard 2023-12-27 ValidFAA registration status code V: Valid registration. All codes
N6798H Cessna
172M
Fixed-wing, single engine Wnk Leasing LLC
Lewes, Delaware
Standard 2023-12-27 ValidFAA registration status code V: Valid registration. All codes
N717FT Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-12-27 ValidFAA registration status code V: Valid registration. All codes
N1040X Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
West Virginia
Standard 2023-12-26 ValidFAA registration status code V: Valid registration. All codes
N5216W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Wyoming
Standard 2023-12-26 ValidFAA registration status code V: Valid registration. All codes
N7333F Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2023-12-26 ValidFAA registration status code V: Valid registration. All codes
N7353G Cessna
172K
Fixed-wing, single engine Individual owner
North Dakota
Standard 2023-12-26 ValidFAA registration status code V: Valid registration. All codes
N8490R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Washington
Standard 2023-12-26 ValidFAA registration status code V: Valid registration. All codes
N21535 Cessna
172M
Fixed-wing, single engine Individual owner
Arkansas
Standard 2023-12-24 ValidFAA registration status code V: Valid registration. All codes
N26845 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-12-24 ValidFAA registration status code V: Valid registration. All codes
N82213 Piper
PA-18-150
Fixed-wing, single engine Individual owner
California
Standard 2023-12-24 ValidFAA registration status code V: Valid registration. All codes
N2366Z Beech
23
Fixed-wing, single engine Aerotyne International LLC
Prattville, Alabama
Standard 2023-12-23 ValidFAA registration status code V: Valid registration. All codes
N51616 Cessna
172P
Fixed-wing, single engine Stardust Aviation LLC
Farmingdale, New York
Standard 2023-12-23 ValidFAA registration status code V: Valid registration. All codes
N7551D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2023-12-23 ValidFAA registration status code V: Valid registration. All codes
N82EP Cessna
172N
Fixed-wing, single engine Posav Holdings LLC
Zephyrhills, Florida
Standard 2023-12-23 ValidFAA registration status code V: Valid registration. All codes
N5737W Piper
PA-28-150
Fixed-wing, single engine Ultimate Airparts LLC
Strasburg, Virginia
Standard 2023-12-22 ValidFAA registration status code V: Valid registration. All codes
N738YR Cessna
172N
Fixed-wing, single engine Yankee Romeo LLC
Wilmington, Delaware
Standard 2023-12-22 ValidFAA registration status code V: Valid registration. All codes
N739JW Cessna
172N
Fixed-wing, single engine Juliet Whiskey LLC
Wilmington, Delaware
Standard 2023-12-22 ValidFAA registration status code V: Valid registration. All codes
N138SF Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2023-12-21 ValidFAA registration status code V: Valid registration. All codes
N6728W Piper
PA-28-140
Fixed-wing, single engine Fifteen Hundred Hours LLC
Broken Arrow, Oklahoma
Standard 2023-12-21 ValidFAA registration status code V: Valid registration. All codes
N733ZK Cessna
172N
Fixed-wing, single engine Stone Aviation LLC
Sacramento, California
Standard 2023-12-21 ValidFAA registration status code V: Valid registration. All codes
N9488D Piper
PA-18A 150
Fixed-wing, single engine Clear Prop Aviation LLC
Sioux City, Iowa
Multiple 2023-12-21 ValidFAA registration status code V: Valid registration. All codes
N104FG Piper
PA-28-161
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-12-20 ValidFAA registration status code V: Valid registration. All codes
N216DR Drost John E
GLASAIR R.G.
Fixed-wing, single engine Individual owner
South Carolina
Experimental 2023-12-20 ValidFAA registration status code V: Valid registration. All codes
N3736K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2023-12-20 ValidFAA registration status code V: Valid registration. All codes
N64001 Cessna
172M
Fixed-wing, single engine Alpha One Aviation LLC
Corona, New York
Standard 2023-12-20 ValidFAA registration status code V: Valid registration. All codes
N6750W Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-12-20 ValidFAA registration status code V: Valid registration. All codes
N78NP Palumbo Nathan M
THORP T-18
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-12-20 ValidFAA registration status code V: Valid registration. All codes
N20159 Cessna
172M
Fixed-wing, single engine Western Edge Aviation LLC
Dickinson, North Dakota
Standard 2023-12-19 ValidFAA registration status code V: Valid registration. All codes
N4405X Piper
PA-28-151
Fixed-wing, single engine W Air LLC
Wheeling, Illinois
Standard 2023-12-19 ValidFAA registration status code V: Valid registration. All codes
N5051R Cessna
172M
Fixed-wing, single engine Skywarrior Flight Training LLC
Pensacola, Florida
Standard 2023-12-19 ValidFAA registration status code V: Valid registration. All codes
N8483L Cessna
172I
Fixed-wing, single engine Chickasha Wings INC
Chickasha, Oklahoma
Standard 2023-12-19 ValidFAA registration status code V: Valid registration. All codes
N15559 Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N20637 Cessna
172M
Fixed-wing, single engine Dbj Aviation LLC
Venetia, Pennsylvania
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N230XH Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N3861Q Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N5162R Cessna
172M
Fixed-wing, single engine Ellis Harvey Airport INC
Guthrie, Oklahoma
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N5213W Piper
PA-28-160
Fixed-wing, single engine N5213W LLC
Clarksville, Tennessee
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N6083J Cessna
172N
Fixed-wing, single engine B&R Aircraft LLC
Wadsworth, Ohio
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N6350R Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N6777T Cessna
177
Fixed-wing, single engine Individual owner
California
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N75270 Piper
PA-28-151
Fixed-wing, single engine Long Island Aviators LLC
Seaford, New York
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N8350R Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N9336D Piper
PA-22-160
Fixed-wing, single engine Individual owner
New Mexico
Standard 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N9746D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Idaho
Experimental 2023-12-18 ValidFAA registration status code V: Valid registration. All codes
N1895J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-12-17 ValidFAA registration status code V: Valid registration. All codes
N196DJ Jacobs Donald
RV6-A
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-12-17 ValidFAA registration status code V: Valid registration. All codes
N280TC Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-12-17 ValidFAA registration status code V: Valid registration. All codes
N36187 Piper
PA-28-161
Fixed-wing, single engine Swaz Aviation LLC
Mesa, Arizona
Standard 2023-12-17 ValidFAA registration status code V: Valid registration. All codes
N3701K Piper
PA-28-140
Fixed-wing, single engine Cdm Atlanta INC
Tyrone, Georgia
Standard 2023-12-17 ValidFAA registration status code V: Valid registration. All codes
N4168H Kurt John J
RV4
Fixed-wing, single engine Individual owner
Florida
Experimental 2023-12-17 ValidFAA registration status code V: Valid registration. All codes
N44858 Piper
PA-28-161
Fixed-wing, single engine Swaz Aviation LLC
Mesa, Arizona
Standard 2023-12-17 ValidFAA registration status code V: Valid registration. All codes
N5266D Cessna
172N
Fixed-wing, single engine Colemanation Investments LLC
Naperville, Illinois
Standard 2023-12-17 ValidFAA registration status code V: Valid registration. All codes
N5399K Cessna
172P
Fixed-wing, single engine Colemanation Investments LLC
Naperville, Illinois
Standard 2023-12-17 ValidFAA registration status code V: Valid registration. All codes
N653W White John D
RV6
Fixed-wing, single engine Individual owner
Arizona
Experimental 2023-12-17 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.