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
N84577 Piper
PA-28-161
Fixed-wing, single engine Acadian Aviation Pilot Training Centre INC
Lafayette, Louisiana
Standard 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N8491D Piper
PA-22-160
Fixed-wing, single engine Dirty Side Down LLC
Downers Grove, Illinois
Standard 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N907BP Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N9605D Piper
PA-22-160
Fixed-wing, single engine Dirty Side Down LLC
Downers Grove, Illinois
Standard 2018-09-04 ValidFAA registration status code V: Valid registration. All codes
N19733 Cessna
172L
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2018-08-31 ValidFAA registration status code V: Valid registration. All codes
N2649P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Colorado
Standard 2018-08-31 ValidFAA registration status code V: Valid registration. All codes
N73001 Cessna
172M
Fixed-wing, single engine Spooter Air LLC
Obion, Tennessee
Standard 2018-08-31 ValidFAA registration status code V: Valid registration. All codes
N7300D Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2018-08-31 ValidFAA registration status code V: Valid registration. All codes
N1234P Piper
PA-23
Fixed-wing, multi-engine Co-owned owner
Illinois
Standard 2018-08-30 ValidFAA registration status code V: Valid registration. All codes
N54832 Cessna
172P
Fixed-wing, single engine Maskityj LLC
Hagerstown, Maryland
Standard 2018-08-30 ValidFAA registration status code V: Valid registration. All codes
N7429D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2018-08-30 ValidFAA registration status code V: Valid registration. All codes
N79199 Cessna
172K
Fixed-wing, single engine Robbins Aviation LLC
Scottsbluff, Nebraska
Standard 2018-08-29 ValidFAA registration status code V: Valid registration. All codes
N9806G Cessna
172L
Fixed-wing, single engine Individual owner
New Jersey
Standard 2018-08-29 ValidFAA registration status code V: Valid registration. All codes
N737UF Cessna
172N
Fixed-wing, single engine Heart of Texas Aviation LLC
Troy, Texas
Standard 2018-08-28 ValidFAA registration status code V: Valid registration. All codes
N75177 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Washington
Standard 2018-08-28 ValidFAA registration status code V: Valid registration. All codes
N1936A Piper
PA-18A RESTRICTED
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-08-27 ValidFAA registration status code V: Valid registration. All codes
N32518 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Iowa
Standard 2018-08-27 ValidFAA registration status code V: Valid registration. All codes
N7613D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2018-08-27 ValidFAA registration status code V: Valid registration. All codes
N264CT Cessna
172N
Fixed-wing, single engine Individual owner
Virginia
Standard 2018-08-25 ValidFAA registration status code V: Valid registration. All codes
N5505H Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Minnesota
Standard 2018-08-25 ValidFAA registration status code V: Valid registration. All codes
N656MF Cessna
172P
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2018-08-25 ValidFAA registration status code V: Valid registration. All codes
N73516 Cessna
172M
Fixed-wing, single engine Aviation Captial Management LLC
San Jose, California
Standard 2018-08-25 ValidFAA registration status code V: Valid registration. All codes
N84195 Cessna
172K
Fixed-wing, single engine Norcal Flight Center LLC
Lincoln, California
Standard 2018-08-25 ValidFAA registration status code V: Valid registration. All codes
N9666D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-08-25 ValidFAA registration status code V: Valid registration. All codes
N999WB Cessna
172N
Fixed-wing, single engine Eastern Kentucky University
Richmond, Kentucky
Standard 2018-08-25 ValidFAA registration status code V: Valid registration. All codes
N14HM Miller
MIDGET MUSTANG 1
Fixed-wing, single engine Individual owner
Idaho
Experimental 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N151PM Mazzagatte Peter A
BUSHBY MMII
Fixed-wing, single engine Historical Aeroplane Foundation INC
Villa Park, California
Experimental 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N395LA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Colorado
Standard 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N59086 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Idaho
Standard 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N6036W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N747SP Lindros Eddie
RUTAN
Fixed-wing, single engine Individual owner
California
Experimental 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N781FM Cessna
172P
Fixed-wing, single engine Fmfa INC
Wilmington, Delaware
Standard 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N782FM Cessna
172P
Fixed-wing, single engine Fmfa INC
Wilmington, Delaware
Standard 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N783FM Cessna
172P
Fixed-wing, single engine Fmfa INC
Wilmington, Delaware
Standard 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N986FA Cessna
172M
Fixed-wing, single engine Freedom Aviation INC
Lynchburg, Virginia
Standard 2018-08-24 ValidFAA registration status code V: Valid registration. All codes
N180HY Aviat Aircraft Inc
A-1B
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2018-08-23 ValidFAA registration status code V: Valid registration. All codes
N7554F Champion
7GCAA
Fixed-wing, single engine Individual owner
Texas
Standard 2018-08-23 ValidFAA registration status code V: Valid registration. All codes
N89MC Cunningham Alan
COZY 3
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2018-08-23 ValidFAA registration status code V: Valid registration. All codes
N218LK Kowalski Leo J
VANS RV6
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2018-08-22 ValidFAA registration status code V: Valid registration. All codes
N8105Y Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-08-21 ValidFAA registration status code V: Valid registration. All codes
N21360 Cessna
172M
Fixed-wing, single engine Individual owner
Wyoming
Standard 2018-08-20 ValidFAA registration status code V: Valid registration. All codes
N6005U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2018-08-20 ValidFAA registration status code V: Valid registration. All codes
N700FM Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2018-08-20 ValidFAA registration status code V: Valid registration. All codes
N2833D Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2018-08-18 ValidFAA registration status code V: Valid registration. All codes
N35337 Cessna
172I
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2018-08-18 ValidFAA registration status code V: Valid registration. All codes
N734LP Cessna
172N
Fixed-wing, single engine Skys the Limit N734Lp LLC
Port Saint Lucie, Florida
Standard 2018-08-18 ValidFAA registration status code V: Valid registration. All codes
N7469L Piper
PA-18-150
Fixed-wing, single engine Individual owner
West Virginia
Standard 2018-08-18 ValidFAA registration status code V: Valid registration. All codes
N8625D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2018-08-18 ValidFAA registration status code V: Valid registration. All codes
N4667T Stits Skycoupe
SA7D
Fixed-wing, single engine Individual owner
Illinois
Experimental 2018-08-17 ValidFAA registration status code V: Valid registration. All codes
N73CM Moore Charles P
RV-6
Fixed-wing, single engine Individual owner
Florida
Experimental 2018-08-17 ValidFAA registration status code V: Valid registration. All codes
N95080 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2018-08-17 ValidFAA registration status code V: Valid registration. All codes
N13263 Cessna
172M
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2018-08-16 ValidFAA registration status code V: Valid registration. All codes
N43352 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Kentucky
Standard 2018-08-16 ValidFAA registration status code V: Valid registration. All codes
N4379R Cessna
172M
Fixed-wing, single engine Slipstream Aviation LLC
Calera, Alabama
Standard 2018-08-16 ValidFAA registration status code V: Valid registration. All codes
N5439H Cessna
172M
Fixed-wing, single engine Meyer Aviation Group LLC
Grand Island, Nebraska
Standard 2018-08-16 ValidFAA registration status code V: Valid registration. All codes
N616VT Piper
PA-28-161
Fixed-wing, single engine Individual owner
New York
Standard 2018-08-16 ValidFAA registration status code V: Valid registration. All codes
N75731 Cessna
172N
Fixed-wing, single engine Individual owner
Minnesota
Standard 2018-08-16 ValidFAA registration status code V: Valid registration. All codes
N7776G Cessna
172L
Fixed-wing, single engine Gulf Atlantic Airways INC
Gainesville, Florida
Standard 2018-08-16 ValidFAA registration status code V: Valid registration. All codes
N1191M Cessna
172K
Fixed-wing, single engine Individual owner
California
Standard 2018-08-15 ValidFAA registration status code V: Valid registration. All codes
N312SM Cessna
172N
Fixed-wing, single engine Shelbyville Flight Academy LLC
Smyrna, Tennessee
Standard 2018-08-15 ValidFAA registration status code V: Valid registration. All codes
N4265H Piper
PA-14
Fixed-wing, single engine Angel Aviation INC
Peoria, Arizona
Standard 2018-08-15 ValidFAA registration status code V: Valid registration. All codes
N468TC Cole Terry E
RV6A
Fixed-wing, single engine Individual owner
Texas
Experimental 2018-08-15 ValidFAA registration status code V: Valid registration. All codes
N68521 Bellanca
7GCAA
Fixed-wing, single engine Bowman Eagles INC
Louisville, Kentucky
Standard 2018-08-15 ValidFAA registration status code V: Valid registration. All codes
N7804G Cessna
172L
Fixed-wing, single engine Individual owner
Ohio
Standard 2018-08-15 ValidFAA registration status code V: Valid registration. All codes
N9105 Cessna
172N
Fixed-wing, single engine Individual owner
New Jersey
Restricted 2018-08-15 ValidFAA registration status code V: Valid registration. All codes
N985FA Cessna
172M
Fixed-wing, single engine Freedom Aviation INC
Lynchburg, Virginia
Standard 2018-08-15 ValidFAA registration status code V: Valid registration. All codes
N1793V Cessna
172M
Fixed-wing, single engine Aviation Capital Management LLC
San Jose, California
Standard 2018-08-14 ValidFAA registration status code V: Valid registration. All codes
N401DK Robinson Helicopter
R22 BETA
Helicopter Buford Copter CO LLC
Colorado City, Texas
Standard 2018-08-14 ValidFAA registration status code V: Valid registration. All codes
N707GK Ausburn Franklin E
GLASAIR SH2
Fixed-wing, single engine Individual owner
Washington
Experimental 2018-08-14 ValidFAA registration status code V: Valid registration. All codes
N9205D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-08-14 ValidFAA registration status code V: Valid registration. All codes
N3799X Aero Commander
100
Fixed-wing, single engine Individual owner
New Mexico
Standard 2018-08-13 ValidFAA registration status code V: Valid registration. All codes
N61657 Cessna
172M
Fixed-wing, single engine Bell Ornithopters Flying Club INC
Eastlake, Colorado
Standard 2018-08-13 ValidFAA registration status code V: Valid registration. All codes
N9562U Grumman American Avn. Corp.
AA-1C
Fixed-wing, single engine Individual owner
New York
Standard 2018-08-13 ValidFAA registration status code V: Valid registration. All codes
N5215W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Washington
Standard 2018-08-10 ValidFAA registration status code V: Valid registration. All codes
N86JJ Charlton John
RV-4
Fixed-wing, single engine Felda Farms LLC
Felda, Florida
Experimental 2018-08-09 ValidFAA registration status code V: Valid registration. All codes
N1951W Beech
B19
Fixed-wing, single engine Individual owner
Iowa
Standard 2018-08-08 ValidFAA registration status code V: Valid registration. All codes
N3563E Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2018-08-08 ValidFAA registration status code V: Valid registration. All codes
N48JA Cessna
172M
Fixed-wing, single engine Jahawk Leasing LLC
Sugar Grove, Illinois
Standard 2018-08-08 ValidFAA registration status code V: Valid registration. All codes
N55135 Piper
PA-28-140
Fixed-wing, single engine Air Ventures Flying School LLC
Smithfield, Rhode Island
Standard 2018-08-08 ValidFAA registration status code V: Valid registration. All codes
N65JA Cessna
172N
Fixed-wing, single engine Jahawk Leasing LLC
Sugar Grove, Illinois
Standard 2018-08-08 ValidFAA registration status code V: Valid registration. All codes
N9168Q Konicek William A
TAILWIND W10
Fixed-wing, single engine Individual owner
California
Experimental 2018-08-08 ValidFAA registration status code V: Valid registration. All codes
N102LY Young Frederick Lawrence
RV-9A
Fixed-wing, single engine Individual owner
Texas
Experimental 2018-08-07 ValidFAA registration status code V: Valid registration. All codes
N1424X Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2018-08-07 ValidFAA registration status code V: Valid registration. All codes
N1900P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Colorado
Standard 2018-08-07 ValidFAA registration status code V: Valid registration. All codes
N229S Scannell Robert M
ZENITH CH-300-TD
Fixed-wing, single engine Individual owner
Florida
Experimental 2018-08-07 ValidFAA registration status code V: Valid registration. All codes
N6990W Piper
PA-28-140
Fixed-wing, single engine Madichar LLC
Lempster, New Hampshire
Standard 2018-08-07 ValidFAA registration status code V: Valid registration. All codes
N733PG Cessna
172N
Fixed-wing, single engine Pn Aero LLC
Caldwell, New Jersey
Standard 2018-08-07 ValidFAA registration status code V: Valid registration. All codes
N8420Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2018-08-07 ValidFAA registration status code V: Valid registration. All codes
N9624W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2018-08-07 ValidFAA registration status code V: Valid registration. All codes
N18641 Filer Raymond W
MUSTANG II
Fixed-wing, single engine Individual owner
Illinois
Experimental 2018-08-06 ValidFAA registration status code V: Valid registration. All codes
N194HC Robinson Helicopter
R22 MARINER
Helicopter California Spyder LLC
Rehoboth Beach, Delaware
Standard 2018-08-06 ValidFAA registration status code V: Valid registration. All codes
N20191 Verdone Frank
ZENITH CH150
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2018-08-06 ValidFAA registration status code V: Valid registration. All codes
N26958 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2018-08-06 ValidFAA registration status code V: Valid registration. All codes
N629HB Piper
PA-23-160
Fixed-wing, multi-engine Battle Creek Powersports LLC
Jasper, Tennessee
Standard 2018-08-06 ValidFAA registration status code V: Valid registration. All codes
N169HC Cessna
172M
Fixed-wing, single engine Butterfly Wings of Miami LLC
Miramar, Florida
Standard 2018-08-03 ValidFAA registration status code V: Valid registration. All codes
N3491Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
New York
Standard 2018-08-03 ValidFAA registration status code V: Valid registration. All codes
N325TR Robertson T E
GLASAIR FT
Fixed-wing, single engine Co-owned owner
Missouri
Experimental 2018-08-02 ValidFAA registration status code V: Valid registration. All codes
N2998P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2018-08-01 ValidFAA registration status code V: Valid registration. All codes
N3452Z Piper
PA-22-160
Fixed-wing, single engine Chief LLC
Du Quoin, Illinois
Standard 2018-08-01 ValidFAA registration status code V: Valid registration. All codes
N19900 Cessna
172M
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2018-07-31 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.