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
N3883Q Cessna
172L
Fixed-wing, single engine Air Williams LLC
Arlington, Texas
Standard 2021-01-06 ValidFAA registration status code V: Valid registration. All codes
N5201W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Colorado
Standard 2021-01-06 ValidFAA registration status code V: Valid registration. All codes
N52993 Cessna
172P
Fixed-wing, single engine Journeys Aviation INC
Boulder, Colorado
Standard 2021-01-06 ValidFAA registration status code V: Valid registration. All codes
N88LW Wernli Leroy F
GLASAIR 1 TD
Fixed-wing, single engine Rkj Enterprises
Bay City, Texas
Experimental 2021-01-06 ValidFAA registration status code V: Valid registration. All codes
N9031L Champion
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-01-06 ValidFAA registration status code V: Valid registration. All codes
N301ND Cessna
172M
Fixed-wing, single engine Individual owner
Minnesota
Standard 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N4153M Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Montana
Standard 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N456D Mosher Rick
VANS RV-6A
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N46TJ Burch Terry
VANS ACFT RV-6
Fixed-wing, single engine Individual owner
Texas
Experimental 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N6024D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N73FR Cessna
172N
Fixed-wing, single engine Wayman Luy LLC
Weston, Florida
Standard 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N78681 Cessna
172K
Fixed-wing, single engine Airflyte LLC
Granby, Connecticut
Standard 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N8063N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Maine
Standard 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N9484H Cessna
172M
Fixed-wing, single engine N9484H LLC
Wheeling, Illinois
Standard 2021-01-05 ValidFAA registration status code V: Valid registration. All codes
N140HC Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Maryland
Standard 2021-01-04 ValidFAA registration status code V: Valid registration. All codes
N143EY Piper
PA-28-140
Fixed-wing, single engine Triple D Aviation LLC
Merritt Island, Florida
Standard 2021-01-04 ValidFAA registration status code V: Valid registration. All codes
N5626L American
AA-5
Fixed-wing, single engine Mw Aviators LLC
Olathe, Kansas
Standard 2021-01-04 ValidFAA registration status code V: Valid registration. All codes
N1380U Cessna
172M
Fixed-wing, single engine Sky Clear LLC
Chicago, Illinois
Standard 2020-12-31 ValidFAA registration status code V: Valid registration. All codes
N1914V Cessna
172M
Fixed-wing, single engine Individual owner
Ohio
Standard 2020-12-31 ValidFAA registration status code V: Valid registration. All codes
N7316G Cessna
172K
Fixed-wing, single engine Cox Capital LLC
Rushville, Missouri
Standard 2020-12-31 ValidFAA registration status code V: Valid registration. All codes
N24GV Cessna
172M
Fixed-wing, single engine Boyd Aviation LLC
Nashville, Tennessee
Standard 2020-12-30 ValidFAA registration status code V: Valid registration. All codes
N113JY Young Jm/Rockwell Ce
GLASAIR SH2R
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-12-29 ValidFAA registration status code V: Valid registration. All codes
N25EH Horgan Edmund C Iii
VANS RV-6A
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-12-29 ValidFAA registration status code V: Valid registration. All codes
N61973 Cessna
172M
Fixed-wing, single engine School Data Solutions INC
Spokane, Washington
Standard 2020-12-29 ValidFAA registration status code V: Valid registration. All codes
N9737D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Montana
Standard 2020-12-29 ValidFAA registration status code V: Valid registration. All codes
N4821A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kansas
Standard 2020-12-28 ValidFAA registration status code V: Valid registration. All codes
N6848B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-12-28 ValidFAA registration status code V: Valid registration. All codes
N7526G Cessna
172L
Fixed-wing, single engine Foothill Aircraft Sales & Service INC
Upland, California
Standard 2020-12-28 ValidFAA registration status code V: Valid registration. All codes
N33EL Lawrence Linwood R
RV-6A
Fixed-wing, single engine Advancing Blade LLC
Glenwood, Minnesota
Experimental 2020-12-23 ValidFAA registration status code V: Valid registration. All codes
N706DE Cessna
172N
Fixed-wing, single engine Bradley Aircraft Company LLC
Columbus, Indiana
Standard 2020-12-23 ValidFAA registration status code V: Valid registration. All codes
N41808 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Connecticut
Standard 2020-12-22 ValidFAA registration status code V: Valid registration. All codes
N968HC Cessna
172L
Fixed-wing, single engine Marsh Flying Services LLC
El Dorado, Kansas
Standard 2020-12-22 ValidFAA registration status code V: Valid registration. All codes
N1474X Piper
PA-28-151
Fixed-wing, single engine Individual owner
New York
Standard 2020-12-21 ValidFAA registration status code V: Valid registration. All codes
N1581J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2020-12-21 ValidFAA registration status code V: Valid registration. All codes
N407MN Mccumber-Nickman-Corp
LONG-EZ
Fixed-wing, single engine Individual owner
California
Experimental 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N43138 Piper
PA-28-151
Fixed-wing, single engine Air-Mods Flight Academy INC
Robbinsville, New Jersey
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N4333A Piper
PA-28-161
Fixed-wing, single engine Air-Mods Flight Academy INC
Robbinsville, New Jersey
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N4381L Piper
PA-28-161
Fixed-wing, single engine Air-Mods Flight Academy INC
Robbinsville, New Jersey
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N443AC American Champion Aircraft
7GCAA
Fixed-wing, single engine Sp Sun LLC
Half Moon Bay, California
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N6039A Piper
PA-18-150
Fixed-wing, single engine Nflight Technology LLC
Homer, Alaska
Restricted 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N7166R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N739ER Cessna
172N
Fixed-wing, single engine Smitty 172 LLC
Rockford, Michigan
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N75522 Cessna
172N
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N75571 Cessna
172N
Fixed-wing, single engine Individual owner
Kentucky
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N9836G Cessna
172L
Fixed-wing, single engine Individual owner
Washington
Standard 2020-12-19 ValidFAA registration status code V: Valid registration. All codes
N1772J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2020-12-18 ValidFAA registration status code V: Valid registration. All codes
N2224K Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
New York
Standard 2020-12-18 ValidFAA registration status code V: Valid registration. All codes
N606EA Piper
PA-28-161
Fixed-wing, single engine Oakmere Leasing LLC
Norton Shores, Michigan
Standard 2020-12-18 ValidFAA registration status code V: Valid registration. All codes
N7255J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2020-12-18 ValidFAA registration status code V: Valid registration. All codes
N1787J Piper
PA-28-140
Fixed-wing, single engine Toga Aviation LLC
Glenmont, New York
Standard 2020-12-17 ValidFAA registration status code V: Valid registration. All codes
N192RK Kaveny Robert E
SA300 STARDUSTER TOO
Fixed-wing, single engine Co-owned owner
Missouri
Experimental 2020-12-17 ValidFAA registration status code V: Valid registration. All codes
N457SK Cessna
172M
Fixed-wing, single engine World Marketing Syndicate I
Wilmington, Delaware
Standard 2020-12-17 ValidFAA registration status code V: Valid registration. All codes
N4927D Cessna
172N
Fixed-wing, single engine Greenville Flight LLC
Greer, South Carolina
Standard 2020-12-17 ValidFAA registration status code V: Valid registration. All codes
N5979U Piper
PA-28-140
Fixed-wing, single engine Wings of Grace Ministries INC
Melbourne, Florida
Standard 2020-12-17 ValidFAA registration status code V: Valid registration. All codes
N47687 Piper
PA-28-161
Fixed-wing, single engine Individual owner
New York
Standard 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N5106H Piper
PA-14
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N5251W Piper
PA-28
Fixed-wing, single engine Air Tech Enterprise LLC
Fitzgerald, Georgia
Standard 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N6665G Cessna
172N
Fixed-wing, single engine Purdue Aviation LLC
West Lafayette, Indiana
Standard 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N72ST Cessna
172N
Fixed-wing, single engine Sierra Tango Air LLC
Senoia, Georgia
Standard 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N79938 Cessna
172K
Fixed-wing, single engine Individual owner
Oregon
Standard 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N7994G Cessna
172L
Fixed-wing, single engine Lincoln Skyways INC
Lincoln, California
Standard 2020-12-16 ValidFAA registration status code V: Valid registration. All codes
N1881J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2020-12-15 ValidFAA registration status code V: Valid registration. All codes
N595CM May Christopher H
RV-4
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2020-12-15 ValidFAA registration status code V: Valid registration. All codes
N140JN Piper
PA-28-140
Fixed-wing, single engine Mfd Aviation INC
Middletown, Delaware
Standard 2020-12-14 ValidFAA registration status code V: Valid registration. All codes
N2107E Piper
PA-28-161
Fixed-wing, single engine Fly Kilo Charlie LLC
New Century, Kansas
Standard 2020-12-14 ValidFAA registration status code V: Valid registration. All codes
N3974M Piper
PA-28-161
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-12-14 ValidFAA registration status code V: Valid registration. All codes
N427SD Kelty Steve
KELTY RV6A
Fixed-wing, single engine Co-owned owner
Montana
Experimental 2020-12-14 ValidFAA registration status code V: Valid registration. All codes
N784R Cessna
172N
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-12-14 ValidFAA registration status code V: Valid registration. All codes
N27036 Piper
PA-18-135
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2020-12-12 ValidFAA registration status code V: Valid registration. All codes
N4425J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2020-12-12 ValidFAA registration status code V: Valid registration. All codes
N5247R Cessna
172M
Fixed-wing, single engine Harbour Aviation LLC
Weatherford, Texas
Standard 2020-12-12 ValidFAA registration status code V: Valid registration. All codes
N60733 Piper
PA-18A-135
Fixed-wing, single engine Co-owned owner
Montana
Standard 2020-12-12 ValidFAA registration status code V: Valid registration. All codes
N61933 Cessna
172M
Fixed-wing, single engine Geebee Ventures LLC
Belgrade, Montana
Standard 2020-12-12 ValidFAA registration status code V: Valid registration. All codes
N6911H Cessna
172M
Fixed-wing, single engine Harbour Aviation LLC
Weatherford, Texas
Standard 2020-12-12 ValidFAA registration status code V: Valid registration. All codes
N738RN Cessna
172N
Fixed-wing, single engine Individual owner
Alabama
Standard 2020-12-12 ValidFAA registration status code V: Valid registration. All codes
N9392C Piper
PA-28-161
Fixed-wing, single engine Thompson Terry
Lake Placid, Florida
Standard 2020-12-12 ValidFAA registration status code V: Valid registration. All codes
N11GF Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
California
Standard 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N12768 Cessna
172M
Fixed-wing, single engine Co-owned owner
Washington
Standard 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N2509P Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N4221Z Piper
PA-18-150
Fixed-wing, single engine Blue River Aviation LLC
Palmer, Alaska
Standard 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N61922 Cessna
172M
Fixed-wing, single engine Individual owner
Maine
Standard 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N6332D Cessna
172N
Fixed-wing, single engine Blue River Aviation LLC
Wasilla, Alaska
Standard 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N656JS Joseph J Strouse
WITTMAN BUTTERCUP
Fixed-wing, single engine Individual owner
New York
Experimental 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N703ES Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Maine
Standard 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N7177D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N7351L American
AA-5
Fixed-wing, single engine Individual owner
Arizona
Standard 2020-12-11 ValidFAA registration status code V: Valid registration. All codes
N5558F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2020-12-10 ValidFAA registration status code V: Valid registration. All codes
N84434 Cessna
172K
Fixed-wing, single engine Russell Aerial Photography INC
Edgewater, Florida
Standard 2020-12-10 ValidFAA registration status code V: Valid registration. All codes
N9262H Cessna
172M
Fixed-wing, single engine Aero Maintenance INC
Vancouver, Washington
Standard 2020-12-10 ValidFAA registration status code V: Valid registration. All codes
N107MS Cessna
172N
Fixed-wing, single engine Jprg Aviation INC
Orlando, Florida
Standard 2020-12-09 ValidFAA registration status code V: Valid registration. All codes
N114FA Cessna
172N
Fixed-wing, single engine Jprg Aviation INC
Orlando, Florida
Standard 2020-12-09 ValidFAA registration status code V: Valid registration. All codes
N61859 Cessna
172M
Fixed-wing, single engine Jprg Aviation INC
Orlando, Florida
Standard 2020-12-09 ValidFAA registration status code V: Valid registration. All codes
N717WK Davis William E
RV-6A
Fixed-wing, single engine Individual owner
Washington
Experimental 2020-12-09 ValidFAA registration status code V: Valid registration. All codes
N806HA Cessna
172M
Fixed-wing, single engine Flywell Aviation LLC
Bowling Green, Kentucky
Standard 2020-12-09 ValidFAA registration status code V: Valid registration. All codes
N4912G Cessna
172N
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-12-08 ValidFAA registration status code V: Valid registration. All codes
N62640 Cessna
172P
Fixed-wing, single engine Condor Aviation LLC
Bethlehem, Pennsylvania
Standard 2020-12-08 ValidFAA registration status code V: Valid registration. All codes
N737NV Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2020-12-08 ValidFAA registration status code V: Valid registration. All codes
N8866N Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Jersey
Standard 2020-12-08 ValidFAA registration status code V: Valid registration. All codes
N9601D Piper
PA-22-160
Fixed-wing, single engine Riffle David T
Woodinville, Washington
Standard 2020-12-08 ValidFAA registration status code V: Valid registration. All codes
N172BR Cessna
172M
Fixed-wing, single engine Oc Flight Lessons LLC
Costa Mesa, California
Standard 2020-12-07 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.