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
N8141D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Kansas
Standard 2019-11-08 ValidFAA registration status code V: Valid registration. All codes
N8794G Blake D Barrymore
JUST ACFT SUPERSTOL
Fixed-wing, single engine Individual owner
Idaho
Experimental 2019-11-08 ValidFAA registration status code V: Valid registration. All codes
N1168P Langford Michael J
RV-4
Fixed-wing, single engine Individual owner
Maryland
Experimental 2019-11-07 ValidFAA registration status code V: Valid registration. All codes
N30RH Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2019-11-07 ValidFAA registration status code V: Valid registration. All codes
N5976E Cessna
172N
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2019-11-07 ValidFAA registration status code V: Valid registration. All codes
N61531 Cessna
172M
Fixed-wing, single engine Aero Maintenance INC
Vancouver, Washington
Standard 2019-11-07 ValidFAA registration status code V: Valid registration. All codes
N6354W Piper
PA-28-140
Fixed-wing, single engine Florida Keys Flight Academy LLC
Marathon, Florida
Standard 2019-11-07 ValidFAA registration status code V: Valid registration. All codes
N1189P Piper
PA-23
Fixed-wing, multi-engine Individual owner
North Carolina
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N12202 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N13319 Cessna
172M
Fixed-wing, single engine Individual owner
Montana
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N13874 Cessna
172M
Fixed-wing, single engine Missionair LLC
Livingston, New York
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N18AJ Piper
PA-18-150
Fixed-wing, single engine Wang Feeds INC
Baker, Montana
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N1933H Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N32565 Piper
PA-28-151
Fixed-wing, single engine Cb Aviation INC
Ogden, Utah
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N38577 Piper
PA-28-161
Fixed-wing, single engine Global Aviation Center INC
Farmingdale, New York
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N5058C Bellanca
7GCBC
Fixed-wing, single engine Individual owner
North Carolina
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N5278R Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N6142W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N63805 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N652RH Cessna
172M
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N6987Q Beech
19A
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N75866 Cessna
172N
Fixed-wing, single engine Gibson Aviation Services LLC
Menomonie, Wisconsin
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N7916G Cessna
172L
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N818GR Rainwater Greg
RV-4
Fixed-wing, single engine Angel Aviation LLC
Paradise, Kansas
Experimental 2019-11-06 ValidFAA registration status code V: Valid registration. All codes
N5755W Piper
PA-28-150
Fixed-wing, single engine Individual owner
California
Standard 2019-11-05 ValidFAA registration status code V: Valid registration. All codes
N5SR Smith-Rollins
CAVALIER SA102.5
Fixed-wing, single engine Individual owner
Indiana
Experimental 2019-11-05 ValidFAA registration status code V: Valid registration. All codes
N733SU Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2019-11-05 ValidFAA registration status code V: Valid registration. All codes
N7674H Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-11-05 ValidFAA registration status code V: Valid registration. All codes
N17F Piper
PA-23
Fixed-wing, multi-engine Individual owner
Michigan
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N20811 Cessna
172M
Fixed-wing, single engine Rtd Aviation LLC
Hillsborough, New Jersey
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N32903 Piper
PA-28-151
Fixed-wing, single engine Foxtail Aviation LLC
Orefield, Pennsylvania
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N41349 Piper
PA-28-151
Fixed-wing, single engine Minot Aero Center
Minot, North Dakota
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N4298Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N6207W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Maryland
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N73453 Cessna
172M
Fixed-wing, single engine Mfa LLC
Mount Pleasant, South Carolina
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N75SE American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
California
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N8306R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N94ER Cessna
172P
Fixed-wing, single engine Individual owner
Texas
Standard 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N9990C Callair
A-5
Fixed-wing, single engine Individual owner
Alaska
Restricted 2019-11-04 ValidFAA registration status code V: Valid registration. All codes
N15282 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2019-11-01 ValidFAA registration status code V: Valid registration. All codes
N4277Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2019-11-01 ValidFAA registration status code V: Valid registration. All codes
N32769 Piper
PA-28-151
Fixed-wing, single engine Sarasota Aero Club LLC
Venice, Florida
Standard 2019-10-31 ValidFAA registration status code V: Valid registration. All codes
N733WH Cessna
172N
Fixed-wing, single engine Individual owner
Washington
Standard 2019-10-31 ValidFAA registration status code V: Valid registration. All codes
N7427G Cessna
172K
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-10-31 ValidFAA registration status code V: Valid registration. All codes
N747GB Cessna
172L
Fixed-wing, single engine Co-owned owner
Washington
Standard 2019-10-31 ValidFAA registration status code V: Valid registration. All codes
N9866L Cessna
172P
Fixed-wing, single engine No Limits Aviation
Hayden, Idaho
Standard 2019-10-31 ValidFAA registration status code V: Valid registration. All codes
N120PW Piper
PA-28-151
Fixed-wing, single engine Brookhaven Aviation LLC
Brookhaven, Mississippi
Standard 2019-10-30 ValidFAA registration status code V: Valid registration. All codes
N12866 Cessna
172M
Fixed-wing, single engine Individual owner
Iowa
Standard 2019-10-30 ValidFAA registration status code V: Valid registration. All codes
N18JA Cessna
172P
Fixed-wing, single engine Jahawk Leasing LLC
Sugar Grove, Illinois
Standard 2019-10-30 ValidFAA registration status code V: Valid registration. All codes
N20676 Cessna
172M
Fixed-wing, single engine Co-owned owner
Florida
Standard 2019-10-30 ValidFAA registration status code V: Valid registration. All codes
N2900P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Oregon
None on file 2019-10-30 ValidFAA registration status code V: Valid registration. All codes
N6490R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2019-10-30 ValidFAA registration status code V: Valid registration. All codes
N78711 Cessna
172K
Fixed-wing, single engine Individual owner
Washington
Standard 2019-10-30 ValidFAA registration status code V: Valid registration. All codes
N8333T Piper
PA-28-161
Fixed-wing, single engine Ras Aviation LLC
Elyria, Ohio
Standard 2019-10-30 ValidFAA registration status code V: Valid registration. All codes
N1737V Cessna
172M
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2019-10-29 ValidFAA registration status code V: Valid registration. All codes
N46125 Cessna
172I
Fixed-wing, single engine East Carolina Aviation LLC
Camden, North Carolina
Standard 2019-10-29 ValidFAA registration status code V: Valid registration. All codes
N8591D Piper
PA-18A
Fixed-wing, single engine Conservative Three LLC
Taft, California
Multiple 2019-10-29 ValidFAA registration status code V: Valid registration. All codes
N96621 Cessna
172P
Fixed-wing, single engine D Gordon Aviation INC
La Jolla, California
Standard 2019-10-29 ValidFAA registration status code V: Valid registration. All codes
N1940F Cessna
172N
Fixed-wing, single engine American Asset Leasing LLC
Livermore, California
Standard 2019-10-28 ValidFAA registration status code V: Valid registration. All codes
N3388P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Washington
Standard 2019-10-28 ValidFAA registration status code V: Valid registration. All codes
N4499J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2019-10-28 ValidFAA registration status code V: Valid registration. All codes
N5037K Bellanca
7GCBC
Fixed-wing, single engine D & K Aviation INC
Milford, Iowa
Standard 2019-10-28 ValidFAA registration status code V: Valid registration. All codes
N75055 Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2019-10-28 ValidFAA registration status code V: Valid registration. All codes
N900TX Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Florida
Standard 2019-10-28 ValidFAA registration status code V: Valid registration. All codes
N92747 Cessna
172M
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2019-10-28 ValidFAA registration status code V: Valid registration. All codes
N12168 Cessna
172M
Fixed-wing, single engine Individual owner
New York
Standard 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N172DL Cessna
172M
Fixed-wing, single engine Kling Aviation INC
Friendswood, Texas
Standard 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N1964F Cessna
172N
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N21585 Cessna
172M
Fixed-wing, single engine Ck Leasing Services LLC
Wilmington, Delaware
Standard 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N3601X Aero Commander
100
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N4660R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N5183X Champion
7GCBC
Fixed-wing, single engine Individual owner
Mississippi
Standard 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N7611D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N963KM Cessna
172M
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2019-10-24 ValidFAA registration status code V: Valid registration. All codes
N1640E Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2019-10-23 ValidFAA registration status code V: Valid registration. All codes
N2113J Cessna
172M
Fixed-wing, single engine Alternate Air INC
Seattle, Washington
Standard 2019-10-23 ValidFAA registration status code V: Valid registration. All codes
N275GT Cessna
172N
Fixed-wing, single engine Ps N275Gt LLC
Green Bay, Wisconsin
Standard 2019-10-23 ValidFAA registration status code V: Valid registration. All codes
N35748 Cessna
172I
Fixed-wing, single engine Individual owner
Texas
Standard 2019-10-23 ValidFAA registration status code V: Valid registration. All codes
N3585 Dunlap Noel
RV-6
Fixed-wing, single engine Individual owner
Oregon
Experimental 2019-10-23 ValidFAA registration status code V: Valid registration. All codes
N5713F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2019-10-23 ValidFAA registration status code V: Valid registration. All codes
N9885D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-10-23 ValidFAA registration status code V: Valid registration. All codes
N221SM Cessna
172M
Fixed-wing, single engine Individual owner
Mississippi
Standard 2019-10-22 ValidFAA registration status code V: Valid registration. All codes
N7362G Cessna
172K
Fixed-wing, single engine Keno Leasing LLC
Monroe, Louisiana
Standard 2019-10-22 ValidFAA registration status code V: Valid registration. All codes
N76JA Cessna
172M
Fixed-wing, single engine Jahawk Leasing LLC
Sugar Grove, Illinois
Standard 2019-10-22 ValidFAA registration status code V: Valid registration. All codes
N8325R Piper
PA-28-140
Fixed-wing, single engine Sy Aviation LLC
Judsonia, Arkansas
Standard 2019-10-22 ValidFAA registration status code V: Valid registration. All codes
N9319H Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-10-22 ValidFAA registration status code V: Valid registration. All codes
N20267 Cessna
172M
Fixed-wing, single engine Knot Grounded Aviation LLC
Napanoch, New York
Standard 2019-10-21 ValidFAA registration status code V: Valid registration. All codes
N2917P Piper
PA-22-150
Fixed-wing, single engine Withheld at owner's request
Standard 2019-10-21 ValidFAA registration status code V: Valid registration. All codes
N4705D Cessna
172N
Fixed-wing, single engine N4705D LLC
Oklahoma City, Oklahoma
Standard 2019-10-21 ValidFAA registration status code V: Valid registration. All codes
N78729 Cessna
172K
Fixed-wing, single engine Copper Country Flyers INC
Oconto, Wisconsin
Standard 2019-10-21 ValidFAA registration status code V: Valid registration. All codes
N1094F Cessna
172N
Fixed-wing, single engine G&M Aircraft INC
Wheat Ridge, Colorado
Standard 2019-10-18 ValidFAA registration status code V: Valid registration. All codes
N20526 Cessna
172M
Fixed-wing, single engine Individual owner
Colorado
Standard 2019-10-18 ValidFAA registration status code V: Valid registration. All codes
N5742U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kansas
Standard 2019-10-18 ValidFAA registration status code V: Valid registration. All codes
N65773 Cessna
172P
Fixed-wing, single engine Ial CORP
Lewes, Delaware
Standard 2019-10-18 ValidFAA registration status code V: Valid registration. All codes
N81916 Piper
PA-28-161
Fixed-wing, single engine Rrg Software LLC
Alpine, California
Standard 2019-10-17 ValidFAA registration status code V: Valid registration. All codes
N2321Q Beech
23
Fixed-wing, single engine Individual owner
Virginia
Standard 2019-10-16 ValidFAA registration status code V: Valid registration. All codes
N489 Vanderzanden Neil A
RV-6
Fixed-wing, single engine Individual owner
Colorado
Experimental 2019-10-16 ValidFAA registration status code V: Valid registration. All codes
N60CE Ennis Charles Hayden Jr
VANS RV-6A
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2019-10-16 ValidFAA registration status code V: Valid registration. All codes
N36209 Piper
PA-28-161
Fixed-wing, single engine Indian Hills Community College
Ottumwa, Iowa
Standard 2019-10-15 ValidFAA registration status code V: Valid registration. All codes
N999EM Beech
23
Fixed-wing, single engine Oombu LLC
Round Rock, Texas
Standard 2019-10-15 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.