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
N61656 Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-12-05 ValidFAA registration status code V: Valid registration. All codes
N64232 Cessna
172M
Fixed-wing, single engine Laurel Highlands Aeronautical Academy
Latrobe, Pennsylvania
Standard 2023-12-05 ValidFAA registration status code V: Valid registration. All codes
N7320J Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2023-12-05 ValidFAA registration status code V: Valid registration. All codes
N7815G Cessna
172L
Fixed-wing, single engine Co-owned owner
California
Standard 2023-12-05 ValidFAA registration status code V: Valid registration. All codes
N979LW American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2023-12-05 ValidFAA registration status code V: Valid registration. All codes
N1358A Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-12-04 ValidFAA registration status code V: Valid registration. All codes
N4310P Piper
PA-23-160
Fixed-wing, multi-engine Chimera Air INC
Maumee, Ohio
Standard 2023-12-04 ValidFAA registration status code V: Valid registration. All codes
N43593 Piper
PA-28-140
Fixed-wing, single engine Goodnuz Aviation LLC
Wooster, Ohio
Standard 2023-12-04 ValidFAA registration status code V: Valid registration. All codes
N737YP Cessna
172N
Fixed-wing, single engine Yankee Papa LLC
Wilmington, Delaware
Standard 2023-12-04 ValidFAA registration status code V: Valid registration. All codes
N7517R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2023-12-04 ValidFAA registration status code V: Valid registration. All codes
N80472 Cessna
172M
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2023-12-04 ValidFAA registration status code V: Valid registration. All codes
N80762 Globe
GC-1B
Fixed-wing, single engine Moving Tails Aviation LLC
Woodbridge, Virginia
Standard 2023-12-04 ValidFAA registration status code V: Valid registration. All codes
N8217S Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-12-04 ValidFAA registration status code V: Valid registration. All codes
N961W Piper
PA-28-160
Fixed-wing, single engine Loma Aviation LLC
San Diego, California
Standard 2023-12-04 ValidFAA registration status code V: Valid registration. All codes
N5067H Cessna
172M
Fixed-wing, single engine Sanders Flight Training Center INC
Jasper, Alabama
Standard 2023-12-03 ValidFAA registration status code V: Valid registration. All codes
N7545R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-12-03 ValidFAA registration status code V: Valid registration. All codes
N2275S Hewitt L/House D
RV-4
Fixed-wing, single engine Individual owner
Arizona
Experimental 2023-12-02 ValidFAA registration status code V: Valid registration. All codes
N3128Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-12-02 ValidFAA registration status code V: Valid registration. All codes
N417PR Rose Paul Q
RV-9A
Fixed-wing, single engine Co-owned owner
Alabama
Experimental 2023-12-02 ValidFAA registration status code V: Valid registration. All codes
N6109J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-12-02 ValidFAA registration status code V: Valid registration. All codes
N8221N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-12-02 ValidFAA registration status code V: Valid registration. All codes
N880CB Cessna
172M
Fixed-wing, single engine J-Airco LLC
Nashville, Tennessee
Standard 2023-12-02 ValidFAA registration status code V: Valid registration. All codes
N888GH Horizon Ultra Light Acft Inc
MUSTANG II
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2023-12-02 ValidFAA registration status code V: Valid registration. All codes
N9652U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-12-02 ValidFAA registration status code V: Valid registration. All codes
N14NF Cessna
172I
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-12-01 ValidFAA registration status code V: Valid registration. All codes
N56957 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-12-01 ValidFAA registration status code V: Valid registration. All codes
N600BH Casler Scott E
RV-4
Fixed-wing, single engine Individual owner
Nevada
Experimental 2023-12-01 ValidFAA registration status code V: Valid registration. All codes
N734KT Cessna
172N
Fixed-wing, single engine Foster Aviation LLC
Germantown, Tennessee
Standard 2023-12-01 ValidFAA registration status code V: Valid registration. All codes
N9953D Piper
PA-22-160
Fixed-wing, single engine Niner Niner Five Three Delta LLC
Marshall, Wisconsin
Standard 2023-12-01 ValidFAA registration status code V: Valid registration. All codes
N9962W Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-12-01 ValidFAA registration status code V: Valid registration. All codes
N2332Y Cessna
177
Fixed-wing, single engine Albi Aero LLC
Denver, Colorado
Standard 2023-11-30 ValidFAA registration status code V: Valid registration. All codes
N411X Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2023-11-30 ValidFAA registration status code V: Valid registration. All codes
N4156X Aero Commander
100
Fixed-wing, single engine Individual owner
Florida
Standard 2023-11-30 ValidFAA registration status code V: Valid registration. All codes
N41RV Condon Philip
VANS RV-4
Fixed-wing, single engine Individual owner
Experimental 2023-11-30 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N5362H Cessna
172M
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-11-30 ValidFAA registration status code V: Valid registration. All codes
N5968D Piper
PA-22-150
Fixed-wing, single engine Grand Lake Air Ventures LLC
Celina, Ohio
Standard 2023-11-30 ValidFAA registration status code V: Valid registration. All codes
N7573R Piper
PA-28-140
Fixed-wing, single engine Monadnock Choppers LLC
North Swanzey, New Hampshire
Standard 2023-11-30 ValidFAA registration status code V: Valid registration. All codes
N8280N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2023-11-30 ValidFAA registration status code V: Valid registration. All codes
N88181 Bellanca
7GCBC
Fixed-wing, single engine Oglesby Holdings LLC
Henrico, Virginia
Standard 2023-11-30 ValidFAA registration status code V: Valid registration. All codes
N9314D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-30 ValidFAA registration status code V: Valid registration. All codes
N184BW Piper
PA-28-161
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N2607P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N40VX Sibley Alfred E
GLASTAR
Fixed-wing, single engine Co-owned owner
California
Experimental 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N5538K Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Restricted 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N6236W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N6784W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N7198R Piper
PA-28-140
Fixed-wing, single engine West Michigan Flying Club INC
Norton Shores, Michigan
Standard 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N7263J Piper
PA-28-140
Fixed-wing, single engine Kl Aviation LLC
Catawba, North Carolina
Standard 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N7424D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N84386 Cessna
172K
Fixed-wing, single engine Individual owner
Montana
Multiple 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N864J Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N94HJ Cessna
172M
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2023-11-29 ValidFAA registration status code V: Valid registration. All codes
N2708L Cessna
172H
Fixed-wing, single engine Rafter Jm Enterprises LLC
Swink, Oklahoma
Standard 2023-11-28 ValidFAA registration status code V: Valid registration. All codes
N31BT Piper
PA-22-150
Fixed-wing, single engine Middle Georgia Aviation INC
Cochran, Georgia
Standard 2023-11-28 ValidFAA registration status code V: Valid registration. All codes
N369X Skinner Robert J
RV-6
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-11-28 ValidFAA registration status code V: Valid registration. All codes
N3878Z Piper
PA-18
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2023-11-28 ValidFAA registration status code V: Valid registration. All codes
N55203 Piper
PA-28-140
Fixed-wing, single engine Mil2Atp INC
Pikeville, North Carolina
Standard 2023-11-28 ValidFAA registration status code V: Valid registration. All codes
N5826U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-11-28 ValidFAA registration status code V: Valid registration. All codes
N60AT Diehl William A
S4
Fixed-wing, single engine Individual owner
Alaska
Experimental 2023-11-28 ValidFAA registration status code V: Valid registration. All codes
N9166T Piper
PA-18-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2023-11-28 ValidFAA registration status code V: Valid registration. All codes
N13238 Cessna
172M
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2023-11-27 ValidFAA registration status code V: Valid registration. All codes
N296CA Piper
PA-28-151
Fixed-wing, single engine Alice Aviation LLC
Atlanta, Georgia
Standard 2023-11-27 ValidFAA registration status code V: Valid registration. All codes
N3177T Cessna
177
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2023-11-27 ValidFAA registration status code V: Valid registration. All codes
N355JD Oneal Edwin G
REBEL
Fixed-wing, single engine Crop Duster Steve INC
Sheridan, Wyoming
Experimental 2023-11-27 ValidFAA registration status code V: Valid registration. All codes
N5122R Cessna
172M
Fixed-wing, single engine 1St Clev-Mar LLC
Lakeview, Arkansas
Standard 2023-11-27 ValidFAA registration status code V: Valid registration. All codes
N529LF Cessna
172N
Fixed-wing, single engine Enterprise Aviation Services LLC
Albuquerque, New Mexico
Standard 2023-11-27 ValidFAA registration status code V: Valid registration. All codes
N6257D Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-27 ValidFAA registration status code V: Valid registration. All codes
N66GJ Piper
PA-18-150
Fixed-wing, single engine Shamrock Aviation LLC
Seabrook, New Hampshire
Standard 2023-11-27 ValidFAA registration status code V: Valid registration. All codes
N7163D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-27 ValidFAA registration status code V: Valid registration. All codes
N32245 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2023-11-26 ValidFAA registration status code V: Valid registration. All codes
N147DS Lee
THORPE T-18
Fixed-wing, single engine Individual owner
California
Experimental 2023-11-25 ValidFAA registration status code V: Valid registration. All codes
N2623P Piper
PA-22-150
Fixed-wing, single engine Jd Aero LLC
Chester, South Dakota
Standard 2023-11-25 ValidFAA registration status code V: Valid registration. All codes
N521GT Cessna
172M
Fixed-wing, single engine Neptune Skies LLC
Little Elm, Texas
Standard 2023-11-25 ValidFAA registration status code V: Valid registration. All codes
N57350 Piper
PA-28-140
Fixed-wing, single engine G F Aviation INC
Miramar, Florida
Standard 2023-11-25 ValidFAA registration status code V: Valid registration. All codes
N7181L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Naughty Air LLC
Sheridan, Wyoming
Standard 2023-11-25 ValidFAA registration status code V: Valid registration. All codes
N747PC Cessna
172N
Fixed-wing, single engine Umo Fight School LLC
Mount Olive, North Carolina
Standard 2023-11-25 ValidFAA registration status code V: Valid registration. All codes
N20PP Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N3529K Piper
PA-28-140
Fixed-wing, single engine Eagle Sky Patrol INC
Deadwood, South Dakota
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N3584P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N590DC Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N614FL Piper
PA-28-140
Fixed-wing, single engine Eagle Sky Patrol INC
Deadwood, South Dakota
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N6310R Piper
PA-28-140
Fixed-wing, single engine Ccb Warriors LLC
Lawrence, Kansas
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N73010 Cessna
172M
Fixed-wing, single engine Rico Aviation Services INC
Miami, Florida
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N7897W Piper
PA-28-180
Fixed-wing, single engine Individual owner
Delaware
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N9613U Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Florida
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N9654V Cessna
172M
Fixed-wing, single engine N9654V LLC
Lakeland, Florida
Standard 2023-11-24 ValidFAA registration status code V: Valid registration. All codes
N16CR Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Connecticut
Standard 2023-11-23 ValidFAA registration status code V: Valid registration. All codes
N31280 Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2023-11-23 ValidFAA registration status code V: Valid registration. All codes
N353CM Piper
PA-28-140
Fixed-wing, single engine Island Air Taxi LLC
Put In Bay, Ohio
Standard 2023-11-23 ValidFAA registration status code V: Valid registration. All codes
N7366L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Florida
Standard 2023-11-23 ValidFAA registration status code V: Valid registration. All codes
N75147 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2023-11-23 ValidFAA registration status code V: Valid registration. All codes
N8500D Piper
PA-22-160
Fixed-wing, single engine Scootair LLC
Alburgh, Vermont
Standard 2023-11-23 ValidFAA registration status code V: Valid registration. All codes
N3178T Cessna
177
Fixed-wing, single engine Advantage Aviation Services LLC
South Saint Paul, Minnesota
Standard 2023-11-22 ValidFAA registration status code V: Valid registration. All codes
N4459J Piper
PA-28-140
Fixed-wing, single engine Coastal Virginia Aviation LLC
Chesapeake, Virginia
Standard 2023-11-22 ValidFAA registration status code V: Valid registration. All codes
N7072B Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Michigan
Multiple 2023-11-22 ValidFAA registration status code V: Valid registration. All codes
N4120Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-21 ValidFAA registration status code V: Valid registration. All codes
N4280J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2023-11-21 ValidFAA registration status code V: Valid registration. All codes
N172LC Cessna
172M
Fixed-wing, single engine Ifly Aviation LLC
Conway, Arkansas
Standard 2023-11-20 ValidFAA registration status code V: Valid registration. All codes
N228KL Pat-Bar Corp
PITTS SC-1
Fixed-wing, single engine Individual owner
Delaware
Experimental 2023-11-20 ValidFAA registration status code V: Valid registration. All codes
N5770W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2023-11-20 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.