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
N1987W Beech
B19
Fixed-wing, single engine Co-owned owner
Florida
Standard 2021-06-11 ValidFAA registration status code V: Valid registration. All codes
N3643M Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-06-11 ValidFAA registration status code V: Valid registration. All codes
N5192X Champion
7GCBC
Fixed-wing, single engine Individual owner
Rhode Island
Restricted 2021-06-11 ValidFAA registration status code V: Valid registration. All codes
N7210D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2021-06-11 ValidFAA registration status code V: Valid registration. All codes
N1989E Cessna
172N
Fixed-wing, single engine Interiaires LLC
Redwood Falls, Minnesota
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N2399Y Cessna
177
Fixed-wing, single engine Individual owner
New York
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N32813 Piper
PA-28-151
Fixed-wing, single engine Clear Sky Investments LLC
Martinsville, Indiana
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N38478 Piper
PA-28-140
Fixed-wing, single engine Pa28 LLC
Sebastian, Florida
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N43232 Piper
PA-28-151
Fixed-wing, single engine N43232 LLC
Orange, Texas
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N63512 Cessna
172P
Fixed-wing, single engine New England Aviation LLC
Plainville, Connecticut
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N73487 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N739NC Cessna
172N
Fixed-wing, single engine Fairmont State University
Fairmont, West Virginia
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N79089 Cessna
172K
Fixed-wing, single engine Individual owner
Florida
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N797RT Hine T L/Johnson R
BUSH WACKER
Fixed-wing, single engine Individual owner
Nebraska
Experimental 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N8116J Piper
PA-28-161
Fixed-wing, single engine Chapel Hill Flying Club INC DBA
Sanford, North Carolina
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N89JM Ross Herbert W
VANS RV-4
Fixed-wing, single engine Individual owner
California
Experimental 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N95133 Piper
PA-28-140
Fixed-wing, single engine Rd Aire LLC
Opelika, Alabama
Standard 2021-06-10 ValidFAA registration status code V: Valid registration. All codes
N130BZ Bolander Robert G
RV6A
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2021-06-09 ValidFAA registration status code V: Valid registration. All codes
N1673J Piper
PA-28-140
Fixed-wing, single engine Southern Colorado Flight Professionals LLC
Pueblo, Colorado
Standard 2021-06-09 ValidFAA registration status code V: Valid registration. All codes
N2973W Piper
PA-28-161
Fixed-wing, single engine Warrior Aircraft CORP
Sturgis, Michigan
Standard 2021-06-09 ValidFAA registration status code V: Valid registration. All codes
N35623 Cessna
172I
Fixed-wing, single engine Rtd Aviation LLC
Hillsborough, New Jersey
Standard 2021-06-09 ValidFAA registration status code V: Valid registration. All codes
N370S Cessna
177
Fixed-wing, single engine Co-owned owner
Texas
Standard 2021-06-09 ValidFAA registration status code V: Valid registration. All codes
N4480J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2021-06-09 ValidFAA registration status code V: Valid registration. All codes
N44886 Piper
PA-28-161
Fixed-wing, single engine Personal Aviation INC
Poway, California
Standard 2021-06-08 ValidFAA registration status code V: Valid registration. All codes
N4758F Piper
PA-28-140
Fixed-wing, single engine Phastar CORP
Cleveland, Ohio
Standard 2021-06-08 ValidFAA registration status code V: Valid registration. All codes
N6TV Cessna
172P
Fixed-wing, single engine Travelaire Service INC
Wilmington, Delaware
Standard 2021-06-08 ValidFAA registration status code V: Valid registration. All codes
N8383H Piper
PA-28-161
Fixed-wing, single engine Individual owner
Nebraska
Standard 2021-06-08 ValidFAA registration status code V: Valid registration. All codes
N8528C Piper
PA-28-151
Fixed-wing, single engine Individual owner
New Jersey
Standard 2021-06-08 ValidFAA registration status code V: Valid registration. All codes
N881RW Piper
PA-18A 150
Fixed-wing, single engine Williams Summit LLC
Salmon, Idaho
Multiple 2021-06-08 ValidFAA registration status code V: Valid registration. All codes
N9605Q Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2021-06-08 ValidFAA registration status code V: Valid registration. All codes
N98954 Cessna
172P
Fixed-wing, single engine Emerson Solutions LLC
Bellingham, Washington
Standard 2021-06-08 ValidFAA registration status code V: Valid registration. All codes
N151SF Piper
PA-28-151
Fixed-wing, single engine Romeo-3 Aviation LLC
Marietta, Georgia
Standard 2021-06-07 ValidFAA registration status code V: Valid registration. All codes
N249NY Cessna
172N
Fixed-wing, single engine Individual owner
Nebraska
Standard 2021-06-07 ValidFAA registration status code V: Valid registration. All codes
N53023 Cessna
172P
Fixed-wing, single engine N53023 Aloha LLC
Palm City, Florida
Standard 2021-06-07 ValidFAA registration status code V: Valid registration. All codes
N686J Piper
PA-28-161
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-06-07 ValidFAA registration status code V: Valid registration. All codes
N72QT Bellanca
7GCBC
Fixed-wing, single engine Withheld at owner's request
Standard 2021-06-07 ValidFAA registration status code V: Valid registration. All codes
N8870N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Maine
Standard 2021-06-07 ValidFAA registration status code V: Valid registration. All codes
N61663 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2021-06-05 ValidFAA registration status code V: Valid registration. All codes
N6798J Piper
PA-28-140
Fixed-wing, single engine Dead Frog LLC
Miles City, Montana
Standard 2021-06-05 ValidFAA registration status code V: Valid registration. All codes
N7163C Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2021-06-05 ValidFAA registration status code V: Valid registration. All codes
N73462 Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2021-06-05 ValidFAA registration status code V: Valid registration. All codes
N1691J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2021-06-04 ValidFAA registration status code V: Valid registration. All codes
N32367 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Washington
Standard 2021-06-03 ValidFAA registration status code V: Valid registration. All codes
N32691 Piper
PA-28-151
Fixed-wing, single engine Mid-American Pilot Association INC
Lawrenceville, Illinois
Standard 2021-06-03 ValidFAA registration status code V: Valid registration. All codes
N3865Q Cessna
172L
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2021-06-03 ValidFAA registration status code V: Valid registration. All codes
N5509W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Texas
Standard 2021-06-03 ValidFAA registration status code V: Valid registration. All codes
N5898V Piper
PA-28-161
Fixed-wing, single engine Maxair INC
Coxs Creek, Kentucky
Standard 2021-06-03 ValidFAA registration status code V: Valid registration. All codes
N6725B Piper
PA-22
Fixed-wing, single engine Individual owner
Idaho
Standard 2021-06-03 ValidFAA registration status code V: Valid registration. All codes
N7260F Piper
PA-28-140
Fixed-wing, single engine Randy'S Rodz LLC
Missoula, Montana
Standard 2021-06-03 ValidFAA registration status code V: Valid registration. All codes
N9770U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Texas
Standard 2021-06-03 ValidFAA registration status code V: Valid registration. All codes
N1172P Piper
PA-23
Fixed-wing, multi-engine Individual owner
South Carolina
Standard 2021-06-02 ValidFAA registration status code V: Valid registration. All codes
N177EB Cessna
177
Fixed-wing, single engine Individual owner
Idaho
Standard 2021-06-02 ValidFAA registration status code V: Valid registration. All codes
N221CF Pickens M/Hicks L
VANS RV-9A
Fixed-wing, single engine Individual owner
Missouri
Experimental 2021-06-02 ValidFAA registration status code V: Valid registration. All codes
N5585F Piper
PA-28-140
Fixed-wing, single engine South Texas Air Force LLC
Mission, Texas
Standard 2021-06-02 ValidFAA registration status code V: Valid registration. All codes
N21757 Cessna
172M
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2021-06-01 ValidFAA registration status code V: Valid registration. All codes
N4952G Cessna
172N
Fixed-wing, single engine Highland Rim Aviation LLC
Springfield, Tennessee
Standard 2021-06-01 ValidFAA registration status code V: Valid registration. All codes
N61687 Cessna
172M
Fixed-wing, single engine Advanced Rehab Specialties Pa
Leesburg, Florida
Standard 2021-06-01 ValidFAA registration status code V: Valid registration. All codes
N6277D Cessna
172N
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2021-06-01 ValidFAA registration status code V: Valid registration. All codes
N64228 Cessna
172M
Fixed-wing, single engine Co-owned owner
Maine
Standard 2021-06-01 ValidFAA registration status code V: Valid registration. All codes
N7581L Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Texas
Standard 2021-06-01 ValidFAA registration status code V: Valid registration. All codes
N88AB Cessna
172M
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-06-01 ValidFAA registration status code V: Valid registration. All codes
N9158Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
California
Standard 2021-06-01 ValidFAA registration status code V: Valid registration. All codes
N1455P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Texas
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N19679 Cessna
172L
Fixed-wing, single engine N19679 LLC
Opa Locka, Florida
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N2613P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Oregon
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N4976L Piper
PA-28-180
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N6181D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
California
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N6749J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N9752C Piper
PA-28-161
Fixed-wing, single engine Aero-Sphere INC
Longmont, Colorado
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N9911Q Cessna
172M
Fixed-wing, single engine Aeronautical Technical Service INC
Collierville, Tennessee
Standard 2021-05-28 ValidFAA registration status code V: Valid registration. All codes
N217JA Cessna
172P
Fixed-wing, single engine Flying Colors Airparts INC
Leesburg, Florida
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N32306 Piper
PA-28-151
Fixed-wing, single engine Legacy Pilot Training LLC
Annandale, Minnesota
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N452CB Bull Charles M Jr
VANS RV-6
Fixed-wing, single engine Individual owner
Maryland
Experimental 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N47595 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N50598 Bellanca
7GCBC
Fixed-wing, single engine Fig Aviation LLC
Boulder, Colorado
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N75515 Cessna
172N
Fixed-wing, single engine N75515 LLC
Palm City, Florida
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N82942 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-27 ValidFAA registration status code V: Valid registration. All codes
N1023K Piper
PA-18-150
Fixed-wing, single engine Bushak Aviation LLC
Frederick, Maryland
Standard 2021-05-26 ValidFAA registration status code V: Valid registration. All codes
N1GB Sisson
PITTS S1S
Fixed-wing, single engine Co-owned owner
Illinois
Experimental 2021-05-26 ValidFAA registration status code V: Valid registration. All codes
N30535 Segerson James M
A
Fixed-wing, single engine Co-owned owner
Texas
Experimental 2021-05-26 ValidFAA registration status code V: Valid registration. All codes
N733JW Cessna
172N
Fixed-wing, single engine Seven 4 Zulu LLC
San Diego, California
Standard 2021-05-26 ValidFAA registration status code V: Valid registration. All codes
N79000 Cessna
172K
Fixed-wing, single engine Individual owner
Illinois
Standard 2021-05-26 ValidFAA registration status code V: Valid registration. All codes
N8383V Piper
PA-28-161
Fixed-wing, single engine H&M Air LLC
Metamora, Michigan
Standard 2021-05-26 ValidFAA registration status code V: Valid registration. All codes
N6769J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2021-05-25 ValidFAA registration status code V: Valid registration. All codes
N84879 Cessna
172K
Fixed-wing, single engine Propwash Aviation LLC
Midland, Michigan
Standard 2021-05-25 ValidFAA registration status code V: Valid registration. All codes
N9587V Cessna
172M
Fixed-wing, single engine Individual owner
Indiana
Standard 2021-05-25 ValidFAA registration status code V: Valid registration. All codes
N43604 Piper
PA-28-151
Fixed-wing, single engine Indian Valley Aero LLC
Telford, Pennsylvania
Standard 2021-05-24 ValidFAA registration status code V: Valid registration. All codes
N4644V Varga Aircraft Corp.
2150A
Fixed-wing, single engine Hendricks Trenton Q
Bow, Washington
Standard 2021-05-24 ValidFAA registration status code V: Valid registration. All codes
N473W Dewitt Richard
DEWITT RV6
Fixed-wing, single engine Smutny Joseph R
Downers Grove, Illinois
Experimental 2021-05-24 ValidFAA registration status code V: Valid registration. All codes
N5680W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-24 ValidFAA registration status code V: Valid registration. All codes
N73357 Cessna
172M
Fixed-wing, single engine Aerospace Trust Management LLC Trustee
Wilmington, Delaware
Standard 2021-05-24 ValidFAA registration status code V: Valid registration. All codes
N738AT Cessna
172N
Fixed-wing, single engine Individual owner
New York
Standard 2021-05-24 ValidFAA registration status code V: Valid registration. All codes
N1080F Cessna
172N
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N206TV Beech
B19
Fixed-wing, single engine Hpfm INC
Vermillion, South Dakota
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N268JG Champion
7GCBC
Fixed-wing, single engine Individual owner
Nevada
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N370XP Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N5908D Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N6123N Beech
19A
Fixed-wing, single engine Pfisters Flying Wahine
Waialua, Hawaii
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N61812 Cessna
172M
Fixed-wing, single engine Individual owner
Kentucky
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N6470Z Piper
PA-25
Fixed-wing, single engine Northern California Soaring Association
Byron, California
Restricted 2021-05-22 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.