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
N8048D Piper
PA-18-150
Fixed-wing, single engine Barnstormers Aerial Advertising LLC
North Myrtle Beach, South Carolina
Restricted 2014-05-02 ValidFAA registration status code V: Valid registration. All codes
N2317M Piper
PA-28-161
Fixed-wing, single engine Hilton Head Flyers LLC
Liberty, South Carolina
Standard 2014-05-01 ValidFAA registration status code V: Valid registration. All codes
N26915 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2014-05-01 ValidFAA registration status code V: Valid registration. All codes
N33304 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2014-05-01 ValidFAA registration status code V: Valid registration. All codes
N5127R Cessna
172M
Fixed-wing, single engine American Industrial Laundry
Lander, Wyoming
Standard 2014-05-01 ValidFAA registration status code V: Valid registration. All codes
N746TW Cessna
172N
Fixed-wing, single engine Tumbleweed Leasing CO INC
Salt Lake City, Utah
Standard 2014-05-01 ValidFAA registration status code V: Valid registration. All codes
N9042Q Cessna
172N
Fixed-wing, single engine Tumbleweed Leasing CO INC
Salt Lake City, Utah
Standard 2014-05-01 ValidFAA registration status code V: Valid registration. All codes
N4136E Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2014-04-30 ValidFAA registration status code V: Valid registration. All codes
N48652 Interstate
S-1B1
Fixed-wing, single engine Individual owner
New Mexico
Standard 2014-04-30 ValidFAA registration status code V: Valid registration. All codes
N7813D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Oregon
Standard 2014-04-30 ValidFAA registration status code V: Valid registration. All codes
N1376R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Georgia
Standard 2014-04-29 ValidFAA registration status code V: Valid registration. All codes
N6090B Heller Werner H
RV-4
Fixed-wing, single engine Plane Fun INC Tr Trustee
Snellville, Georgia
Experimental 2014-04-29 ValidFAA registration status code V: Valid registration. All codes
N7182B Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2014-04-29 ValidFAA registration status code V: Valid registration. All codes
N7204G Cessna
172K
Fixed-wing, single engine Individual owner
Washington
Standard 2014-04-29 ValidFAA registration status code V: Valid registration. All codes
N734DA Cessna
172N
Fixed-wing, single engine California In Nice INC
San Jose, California
Standard 2014-04-29 ValidFAA registration status code V: Valid registration. All codes
N320MT Transtrum Wallace Mckay Jr
VANS RV-4
Fixed-wing, single engine Individual owner
Arizona
Experimental 2014-04-28 ValidFAA registration status code V: Valid registration. All codes
N4174J Piper
PA-28-140
Fixed-wing, single engine North Creek Flying Club INC
Continental, Ohio
Standard 2014-04-28 ValidFAA registration status code V: Valid registration. All codes
N46107 Cessna
172I
Fixed-wing, single engine Individual owner
Maine
Standard 2014-04-28 ValidFAA registration status code V: Valid registration. All codes
N597LE Robinson Helicopter
R22
Helicopter Leading Edge Aviation INC
Bend, Oregon
Multiple 2014-04-28 ValidFAA registration status code V: Valid registration. All codes
N6492E Cessna
172N
Fixed-wing, single engine Individual owner
Maryland
Standard 2014-04-28 ValidFAA registration status code V: Valid registration. All codes
N7549R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2014-04-28 ValidFAA registration status code V: Valid registration. All codes
N219BJ Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2014-04-25 ValidFAA registration status code V: Valid registration. All codes
N3428T Cessna
177
Fixed-wing, single engine Broken Arrow Crop Insurance INC
Perryton, Texas
Standard 2014-04-25 ValidFAA registration status code V: Valid registration. All codes
N7139Q Cessna
172L
Fixed-wing, single engine Individual owner
Alabama
Standard 2014-04-25 ValidFAA registration status code V: Valid registration. All codes
N727PM Cessna
172P
Fixed-wing, single engine Individual owner
New York
Standard 2014-04-25 ValidFAA registration status code V: Valid registration. All codes
N917GK Cessna
172N
Fixed-wing, single engine Amdel Holding LLC
Houston, Texas
Standard 2014-04-25 ValidFAA registration status code V: Valid registration. All codes
N9631Q Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2014-04-25 ValidFAA registration status code V: Valid registration. All codes
N1822G Champion
7GCAA
Fixed-wing, single engine Whr Sales LLC
Riviera Beach, Florida
Standard 2014-04-24 ValidFAA registration status code V: Valid registration. All codes
N27226 Swanson
NIEUPORT 28
Fixed-wing, single engine Owls Head Transportation Museum
Owls Head, Maine
Experimental 2014-04-24 ValidFAA registration status code V: Valid registration. All codes
N144BF Cessna
172M
Fixed-wing, single engine Hyldburg Aviation INC
Plymouth, Massachusetts
Standard 2014-04-23 ValidFAA registration status code V: Valid registration. All codes
N21329 Cessna
172M
Fixed-wing, single engine Propeller Enterprises LLC
Gilbert, Arizona
Standard 2014-04-23 ValidFAA registration status code V: Valid registration. All codes
N44710 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Iowa
Standard 2014-04-23 ValidFAA registration status code V: Valid registration. All codes
N3327Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2014-04-22 ValidFAA registration status code V: Valid registration. All codes
N64267 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2014-04-22 ValidFAA registration status code V: Valid registration. All codes
N739AF Cessna
172N
Fixed-wing, single engine Co-owned owner
Florida
Standard 2014-04-22 ValidFAA registration status code V: Valid registration. All codes
N1627A Piper
PA-18-125
Fixed-wing, single engine Individual owner
Nebraska
Restricted 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N1692P Piper
PA-22-150
Fixed-wing, single engine Individual owner
South Dakota
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N19676 Cessna
172L
Fixed-wing, single engine Individual owner
Virginia
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N4473J Piper
PA-28-140
Fixed-wing, single engine Aj Aviation LLC
Gwinner, North Dakota
Standard 2014-04-21 ValidFAA registration status code V: Valid registration. All codes
N2240T Piper
PA-28-140
Fixed-wing, single engine Judie Bear Air LLC
Bend, Oregon
Standard 2014-04-18 ValidFAA registration status code V: Valid registration. All codes
N3211P Piper
PA-23
Fixed-wing, multi-engine Judie Bear Air LLC
Bend, Oregon
Standard 2014-04-18 ValidFAA registration status code V: Valid registration. All codes
N6778W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nebraska
Standard 2014-04-18 ValidFAA registration status code V: Valid registration. All codes
N75056 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Tennessee
Standard 2014-04-18 ValidFAA registration status code V: Valid registration. All codes
N9906Y Champion
7GCB
Fixed-wing, single engine Mac
Wichita, Kansas
Multiple 2014-04-18 ValidFAA registration status code V: Valid registration. All codes
N7582G Cessna
172L
Fixed-wing, single engine Individual owner
Alaska
Standard 2014-04-17 ValidFAA registration status code V: Valid registration. All codes
N6549D Cessna
172N
Fixed-wing, single engine Bbjs Investments LLC
Waukesha, Wisconsin
Standard 2014-04-16 ValidFAA registration status code V: Valid registration. All codes
N745TW Cessna
172N
Fixed-wing, single engine Tumbleweed Leasing CO INC
Salt Lake City, Utah
Standard 2014-04-16 ValidFAA registration status code V: Valid registration. All codes
N8333L Cessna
172I
Fixed-wing, single engine Individual owner
Texas
Standard 2014-04-16 ValidFAA registration status code V: Valid registration. All codes
N46601 Cessna
172K
Fixed-wing, single engine Skywarrior Flight Training INC
Pensacola, Florida
Multiple 2014-04-15 ValidFAA registration status code V: Valid registration. All codes
N9822V Cessna
172M
Fixed-wing, single engine Co-owned owner
Florida
Standard 2014-04-15 ValidFAA registration status code V: Valid registration. All codes
N20360 Cessna
172M
Fixed-wing, single engine Jaynair CORP DBA
Middlebury, Connecticut
Standard 2014-04-14 ValidFAA registration status code V: Valid registration. All codes
N9608U Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine North Shore Aviation LLC
Honolulu, Hawaii
Standard 2014-04-14 ValidFAA registration status code V: Valid registration. All codes
N55975 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2014-04-11 ValidFAA registration status code V: Valid registration. All codes
N7171R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2014-04-11 ValidFAA registration status code V: Valid registration. All codes
N71RE Eigsti Rodney E
RV-4
Fixed-wing, single engine Co-owned owner
Nebraska
Experimental 2014-04-11 ValidFAA registration status code V: Valid registration. All codes
N734EA Cessna
172N
Fixed-wing, single engine Tschacher Farms INC
Manville, Wyoming
Standard 2014-04-11 ValidFAA registration status code V: Valid registration. All codes
N7311F Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2014-04-10 ValidFAA registration status code V: Valid registration. All codes
N7786G Cessna
172L
Fixed-wing, single engine Rcm Aviation LLC
North Clarendon, Vermont
Standard 2014-04-10 ValidFAA registration status code V: Valid registration. All codes
N85JW Cessna
172K
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2014-04-10 ValidFAA registration status code V: Valid registration. All codes
N5287E Cessna
172N
Fixed-wing, single engine Lin LLC
Dunn, North Carolina
Standard 2014-04-09 ValidFAA registration status code V: Valid registration. All codes
N54744 Cessna
172P
Fixed-wing, single engine Suncoast Aviation of Swfl LLC
Fort Myers, Florida
Standard 2014-04-09 ValidFAA registration status code V: Valid registration. All codes
N6488W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2014-04-09 ValidFAA registration status code V: Valid registration. All codes
N98485 Cessna
172P
Fixed-wing, single engine Amelia Reid Aviation LLC
San Jose, California
Standard 2014-04-09 ValidFAA registration status code V: Valid registration. All codes
N21RK King
PITTS S-1-S
Fixed-wing, single engine Individual owner
Louisiana
Experimental 2014-04-08 ValidFAA registration status code V: Valid registration. All codes
N5779D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2014-04-08 ValidFAA registration status code V: Valid registration. All codes
N75825 Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2014-04-08 ValidFAA registration status code V: Valid registration. All codes
N16289 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2014-04-07 ValidFAA registration status code V: Valid registration. All codes
N3565Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Tennessee
Standard 2014-04-07 ValidFAA registration status code V: Valid registration. All codes
N60HF Cessna
172N
Fixed-wing, single engine Texas Flying Club INC
Bryan, Texas
Standard 2014-04-07 ValidFAA registration status code V: Valid registration. All codes
N822GB Brown Gerald P
GLASAIR RG-1
Fixed-wing, single engine Individual owner
Georgia
Experimental 2014-04-07 ValidFAA registration status code V: Valid registration. All codes
N8677V Bellanca
7GCAA
Fixed-wing, single engine Albij3 LLC
Milton, Florida
Standard 2014-04-07 ValidFAA registration status code V: Valid registration. All codes
N94X Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2014-04-07 ValidFAA registration status code V: Valid registration. All codes
N1231P Piper
PA-23
Fixed-wing, multi-engine Twin Oaks Airpark INC
Hillsboro, Oregon
Standard 2014-04-04 ValidFAA registration status code V: Valid registration. All codes
N1687G Champion
7GCAA
Fixed-wing, single engine Individual owner
New Jersey
Standard 2014-04-04 ValidFAA registration status code V: Valid registration. All codes
N7476L Piper
PA-18-150
Fixed-wing, single engine Grabofsky Livestock & Grain INC
Hogeland, Montana
Standard 2014-04-04 ValidFAA registration status code V: Valid registration. All codes
N1095E Bellanca
7GCBC
Fixed-wing, single engine Independent Dusting Service INC
El Campo, Texas
Standard 2014-04-03 ValidFAA registration status code V: Valid registration. All codes
N20804 Cessna
172M
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2014-04-03 ValidFAA registration status code V: Valid registration. All codes
N239CP Powers
BD-4
Fixed-wing, single engine Individual owner
Oregon
Experimental 2014-04-03 ValidFAA registration status code V: Valid registration. All codes
N9272H Cessna
172M
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2014-04-03 ValidFAA registration status code V: Valid registration. All codes
N5754E Cessna
172N
Fixed-wing, single engine Individual owner
Oregon
Standard 2014-04-02 ValidFAA registration status code V: Valid registration. All codes
N97154 Cessna
172P
Fixed-wing, single engine Co-owned owner
California
Restricted 2014-04-02 ValidFAA registration status code V: Valid registration. All codes
N192AR Cessna
172N
Fixed-wing, single engine Dj Whelan CORP
Sag Harbor, New York
Standard 2014-04-01 ValidFAA registration status code V: Valid registration. All codes
N3217Z Piper
PA-22-150
Fixed-wing, single engine Quality Aviation INC
Marana, Arizona
Standard 2014-04-01 ValidFAA registration status code V: Valid registration. All codes
N3965P Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Carolina
Standard 2014-04-01 ValidFAA registration status code V: Valid registration. All codes
N5297R Cessna
172M
Fixed-wing, single engine Individual owner
North Dakota
Standard 2014-04-01 ValidFAA registration status code V: Valid registration. All codes
N6206D Cessna
172N
Fixed-wing, single engine P & W Investments INC
Wilmington, Delaware
Standard 2014-03-31 ValidFAA registration status code V: Valid registration. All codes
N6955D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2014-03-31 ValidFAA registration status code V: Valid registration. All codes
N98239 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2014-03-31 ValidFAA registration status code V: Valid registration. All codes
N1552J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2014-03-28 ValidFAA registration status code V: Valid registration. All codes
N42DG Havard Gregory Hughes
RV 4
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2014-03-28 ValidFAA registration status code V: Valid registration. All codes
N5514F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2014-03-26 ValidFAA registration status code V: Valid registration. All codes
N7776D Piper
PA-18-150
Fixed-wing, single engine Second Delaware CORP
Moorestown, New Jersey
Standard 2014-03-26 ValidFAA registration status code V: Valid registration. All codes
N8222H Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2014-03-26 ValidFAA registration status code V: Valid registration. All codes
N13529 Cessna
172M
Fixed-wing, single engine Individual owner
Iowa
Standard 2014-03-25 ValidFAA registration status code V: Valid registration. All codes
N5816L American
AA-5
Fixed-wing, single engine Sparrowhawk Aviation LLC
Moraine, Ohio
Standard 2014-03-25 ValidFAA registration status code V: Valid registration. All codes
N6706H Cessna
172M
Fixed-wing, single engine Dairy Air INC
Wyoming, Pennsylvania
Standard 2014-03-25 ValidFAA registration status code V: Valid registration. All codes
N80864 Cessna
172M
Fixed-wing, single engine Co-owned owner
West Virginia
Standard 2014-03-25 ValidFAA registration status code V: Valid registration. All codes
N83346 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Texas
Standard 2014-03-25 ValidFAA registration status code V: Valid registration. All codes
N6731J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2014-03-24 ValidFAA registration status code V: Valid registration. All codes
N6976W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2014-03-24 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.