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
N9934Q Cessna
172M
Fixed-wing, single engine Doupe Services LLC
Fort Myers, Florida
Standard 2019-04-30 ValidFAA registration status code V: Valid registration. All codes
N26888 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2019-04-29 ValidFAA registration status code V: Valid registration. All codes
N3108Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Indiana
Standard 2019-04-29 ValidFAA registration status code V: Valid registration. All codes
N4518A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Utah
Standard 2019-04-29 ValidFAA registration status code V: Valid registration. All codes
N4630J Cessna
172N
Fixed-wing, single engine Southrail Aviation LLC
North Charleston, South Carolina
Standard 2019-04-29 ValidFAA registration status code V: Valid registration. All codes
N5221W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-04-29 ValidFAA registration status code V: Valid registration. All codes
N8149T Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2019-04-29 ValidFAA registration status code V: Valid registration. All codes
N9500L American
AA-5
Fixed-wing, single engine Atlantic Aero Club INC
Newark, Delaware
Standard 2019-04-29 ValidFAA registration status code V: Valid registration. All codes
N98059 Piper
PA-28-140
Fixed-wing, single engine Airplane LLC
Fort Collins, Colorado
Standard 2019-04-29 ValidFAA registration status code V: Valid registration. All codes
N3143D Melby David G
CAVALIER
Fixed-wing, single engine Individual owner
California
Experimental 2019-04-26 ValidFAA registration status code V: Valid registration. All codes
N420T Tolman
BUSHBY MUSTANG M-II
Fixed-wing, single engine Individual owner
California
Experimental 2019-04-26 ValidFAA registration status code V: Valid registration. All codes
N53009 Cessna
172P
Fixed-wing, single engine Triple V Aviation LLC
Long Valley, New Jersey
Standard 2019-04-26 ValidFAA registration status code V: Valid registration. All codes
N6659R Beech
B19
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-04-26 ValidFAA registration status code V: Valid registration. All codes
N79228 Cessna
172K
Fixed-wing, single engine Lowcountry Flying Club
Moncks Corner, South Carolina
Standard 2019-04-26 ValidFAA registration status code V: Valid registration. All codes
N8567Y Piper
PA-30
Fixed-wing, multi-engine Co-owned owner
Massachusetts
Standard 2019-04-26 ValidFAA registration status code V: Valid registration. All codes
N1048A Piper
PA-18-125
Fixed-wing, single engine Co-owned owner
Montana
Restricted 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N212AJ Pearse Arnold J
RV-3
Fixed-wing, single engine Individual owner
Kansas
Experimental 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N218EA Cessna
172L
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N3345K Universal
GLOBE GC-1B
Fixed-wing, single engine Individual owner
Florida
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N38513 Piper
PA-28-140
Fixed-wing, single engine J&L Aviation LLC
Wilmington, Delaware
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N5054H Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N5991W Piper
PA-28-140
Fixed-wing, single engine Chickasha Wings INC
Chickasha, Oklahoma
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N73455 Cessna
172M
Fixed-wing, single engine 101 Flight LLC
Waterford, Michigan
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N7677F Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N86TU Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N9881G Cessna
172L
Fixed-wing, single engine Individual owner
Mississippi
Standard 2019-04-25 ValidFAA registration status code V: Valid registration. All codes
N172BE Cessna
172L
Fixed-wing, single engine Aero Northwest LLC
Port Angeles, Washington
Standard 2019-04-24 ValidFAA registration status code V: Valid registration. All codes
N31531 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-04-24 ValidFAA registration status code V: Valid registration. All codes
N674FL Piper
PA-28-140
Fixed-wing, single engine Backyard Aero LLC
Rockville, Indiana
Standard 2019-04-24 ValidFAA registration status code V: Valid registration. All codes
N733TS Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2019-04-24 ValidFAA registration status code V: Valid registration. All codes
N755PR Cessna
172M
Fixed-wing, single engine 101 Flight LLC
Waterford, Michigan
Standard 2019-04-24 ValidFAA registration status code V: Valid registration. All codes
N9878Q Cessna
172M
Fixed-wing, single engine Co-owned owner
Washington
Standard 2019-04-24 ValidFAA registration status code V: Valid registration. All codes
N1329P Piper
PA-23-150
Fixed-wing, multi-engine N1705R INC
Cobb, California
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N43488 Piper
PA-28-151
Fixed-wing, single engine Ravotti Air LLC
Leechburg, Pennsylvania
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N4657G Cessna
172N
Fixed-wing, single engine Florida Flight Training Center INC
Venice, Florida
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N4976G Cessna
172N
Fixed-wing, single engine Oklahoma Airmen Flying Club INC
Jenks, Oklahoma
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N51890 Cessna
172P
Fixed-wing, single engine Hyldburg Aviation INC
Plymouth, Massachusetts
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N53265 Cessna
172P
Fixed-wing, single engine Jeppesen Employees Flying Association
Englewood, Colorado
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N6392G Cessna
172N
Fixed-wing, single engine Jtw Aero Leasing LLC
Frederick, Maryland
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N64303 Cessna
172M
Fixed-wing, single engine Acey Services LLC
Cumming, Georgia
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N6702J Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N75839 Cessna
172N
Fixed-wing, single engine Rocky Mountain Aircraft Services LLC
Broomfield, Colorado
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N8607D Piper
PA-22-160
Fixed-wing, single engine Individual owner
South Dakota
Standard 2019-04-23 ValidFAA registration status code V: Valid registration. All codes
N110T Anderson
PITTS SPECIAL S-1
Fixed-wing, single engine Co-owned owner
Georgia
Experimental 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N1393P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N26973 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Mississippi
Standard 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N32585 Piper
PA-28-151
Fixed-wing, single engine Aero Services Lc
Woods Cross, Utah
Standard 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N39GM Martinson Gene E
PIETENPOL AIRCAMPER
Fixed-wing, single engine Individual owner
Missouri
Experimental 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N4114J Piper
PA-28-140
Fixed-wing, single engine Crader Air LLC
Jackson, Missouri
Standard 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N4149J Piper
PA-28-140
Fixed-wing, single engine Elko Aviation Group LLC
Elko, Nevada
Standard 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N4389Q Cessna
172L
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N73FT Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Florida
Standard 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N79015 Cessna
172K
Fixed-wing, single engine Flying Weaners INC
Jacksonville, Florida
Standard 2019-04-22 ValidFAA registration status code V: Valid registration. All codes
N2823X Cessna
177
Fixed-wing, single engine Spectron Aviation INC
West Boylston, Massachusetts
Standard 2019-04-19 ValidFAA registration status code V: Valid registration. All codes
N3408T Cessna
177
Fixed-wing, single engine Spectron Aviation INC
West Boylston, Massachusetts
Standard 2019-04-19 ValidFAA registration status code V: Valid registration. All codes
N974CA Cessna
172M
Fixed-wing, single engine Individual owner
Missouri
Standard 2019-04-19 ValidFAA registration status code V: Valid registration. All codes
N3761Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2019-04-18 ValidFAA registration status code V: Valid registration. All codes
N5197E Cessna
172N
Fixed-wing, single engine Tspy Services INC
Wilmington, Delaware
Standard 2019-04-18 ValidFAA registration status code V: Valid registration. All codes
N6091D Cessna
172N
Fixed-wing, single engine Mentone Flying Club
Rochester, Indiana
Standard 2019-04-18 ValidFAA registration status code V: Valid registration. All codes
N902AZ Cessna
172P
Fixed-wing, single engine Individual owner
Florida
Standard 2019-04-18 ValidFAA registration status code V: Valid registration. All codes
N9672U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
South Carolina
Standard 2019-04-18 ValidFAA registration status code V: Valid registration. All codes
N124PH Cessna
172N
Fixed-wing, single engine Dk Skyhawk LLC
Park City, Utah
Standard 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N3760P Piper
PA-22-150
Fixed-wing, single engine Altitude Unlimited INC
Lewes, Delaware
Standard 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N3960Q Cessna
172L
Fixed-wing, single engine Lastochka LLC
Kalispell, Montana
Standard 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N4511Y Piper
PA-18-150
Fixed-wing, single engine Wab Air LLC
Boulder, Montana
Standard 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N5047E Bellanca
7GCBC
Fixed-wing, single engine Individual owner
South Carolina
Standard 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N53069 Cessna
172P
Fixed-wing, single engine Northwoods Air LLC
Orono, Maine
Standard 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N5557J Socata
TB 9 TAMPICO
Fixed-wing, single engine Smtm Holdings INC
Wilmington, Delaware
Standard 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N7041Q Cessna
172L
Fixed-wing, single engine Elizabeth City State University
Elizabeth City, North Carolina
Standard 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N707GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Individual owner
Nevada
Standard 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N8142 Sprong Floyd
RV-3
Fixed-wing, single engine Individual owner
Montana
Experimental 2019-04-17 ValidFAA registration status code V: Valid registration. All codes
N53622 Cessna
172P
Fixed-wing, single engine Mc Air LLC
Miami Beach, Florida
Standard 2019-04-16 ValidFAA registration status code V: Valid registration. All codes
N7157G Cessna
172K
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2019-04-16 ValidFAA registration status code V: Valid registration. All codes
N9933W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2019-04-16 ValidFAA registration status code V: Valid registration. All codes
N1098U Cessna
172M
Fixed-wing, single engine Individual owner
Illinois
Standard 2019-04-15 ValidFAA registration status code V: Valid registration. All codes
N26304 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Cobra Kai INC
Wichita Falls, Texas
Standard 2019-04-15 ValidFAA registration status code V: Valid registration. All codes
N32200 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2019-04-15 ValidFAA registration status code V: Valid registration. All codes
N3458T Cessna
177
Fixed-wing, single engine Individual owner
California
Standard 2019-04-15 ValidFAA registration status code V: Valid registration. All codes
N47906 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-04-15 ValidFAA registration status code V: Valid registration. All codes
N7637G Cessna
172L
Fixed-wing, single engine Everett Flying Service INC
Holly Grove, Arkansas
Standard 2019-04-15 ValidFAA registration status code V: Valid registration. All codes
N50CS Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Montana
Standard 2019-04-12 ValidFAA registration status code V: Valid registration. All codes
N5741D Piper
PA-22-150
Fixed-wing, single engine J&H Sewing & Vacuum INC
Soldotna, Alaska
Standard 2019-04-12 ValidFAA registration status code V: Valid registration. All codes
N325WV Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Michigan
Standard 2019-04-11 ValidFAA registration status code V: Valid registration. All codes
N4378Q Cessna
172L
Fixed-wing, single engine Wings Flying Club INC
South Bend, Indiana
Standard 2019-04-11 ValidFAA registration status code V: Valid registration. All codes
N9059D Gladstone Steve
RV6
Fixed-wing, single engine Individual owner
Arizona
Experimental 2019-04-11 ValidFAA registration status code V: Valid registration. All codes
N171BH Heinitz Brian
COZY
Fixed-wing, single engine Co-owned owner
Nevada
Experimental 2019-04-10 ValidFAA registration status code V: Valid registration. All codes
N522D Douglas L Olson
OLSON SUPER CUB
Fixed-wing, single engine Individual owner
Iowa
Experimental 2019-04-10 ValidFAA registration status code V: Valid registration. All codes
N7568F Champion
7GCBC
Fixed-wing, single engine Individual owner
Kansas
Standard 2019-04-10 ValidFAA registration status code V: Valid registration. All codes
N7658S Bellanca
8KCAB
Fixed-wing, single engine Flytwincos LLC
Las Vegas, Nevada
Standard 2019-04-10 ValidFAA registration status code V: Valid registration. All codes
N13200 Cessna
172M
Fixed-wing, single engine Classic Aircraft Sales LLC
Weyers Cave, Virginia
Standard 2019-04-09 ValidFAA registration status code V: Valid registration. All codes
N3560P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2019-04-09 ValidFAA registration status code V: Valid registration. All codes
N53738 Bellanca
7GCBC
Fixed-wing, single engine G&G Equipment LLC
Wasilla, Alaska
Standard 2019-04-09 ValidFAA registration status code V: Valid registration. All codes
N61586 Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-04-09 ValidFAA registration status code V: Valid registration. All codes
N80282 Cessna
172M
Fixed-wing, single engine Individual owner
Maryland
Standard 2019-04-09 ValidFAA registration status code V: Valid registration. All codes
N9356D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Oregon
Restricted 2019-04-09 ValidFAA registration status code V: Valid registration. All codes
N43291 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2019-04-08 ValidFAA registration status code V: Valid registration. All codes
N6574D Cessna
172N
Fixed-wing, single engine Fly Carolina LLC
Concord, North Carolina
Standard 2019-04-08 ValidFAA registration status code V: Valid registration. All codes
N7156L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Excalibur Aviation LLC
Amelia Court House, Virginia
Standard 2019-04-08 ValidFAA registration status code V: Valid registration. All codes
N9626Q Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2019-04-08 ValidFAA registration status code V: Valid registration. All codes
N2834P Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2019-04-05 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.