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
N35714 Cessna
172I
Fixed-wing, single engine Skyhawk Rising LLC
Manchester, Iowa
Standard 2020-04-10 ValidFAA registration status code V: Valid registration. All codes
N56958 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Missouri
Standard 2020-04-10 ValidFAA registration status code V: Valid registration. All codes
N3914P Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2020-04-09 ValidFAA registration status code V: Valid registration. All codes
N6383F Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2020-04-09 ValidFAA registration status code V: Valid registration. All codes
N6577W Piper
PA-28-140
Fixed-wing, single engine Adventist World Aviation
Wilson, North Carolina
Standard 2020-04-09 ValidFAA registration status code V: Valid registration. All codes
N7125G Cessna
172K
Fixed-wing, single engine Individual owner
Kansas
Standard 2020-04-09 ValidFAA registration status code V: Valid registration. All codes
N774GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Aircraft Resource Center INC
Lakeville, Minnesota
Standard 2020-04-09 ValidFAA registration status code V: Valid registration. All codes
N799RQ Quinn Rollie C
RV6A
Fixed-wing, single engine Individual owner
Texas
Experimental 2020-04-09 ValidFAA registration status code V: Valid registration. All codes
N3307P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Massachusetts
Standard 2020-04-08 ValidFAA registration status code V: Valid registration. All codes
N3702P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kansas
Standard 2020-04-08 ValidFAA registration status code V: Valid registration. All codes
N41223 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2020-04-08 ValidFAA registration status code V: Valid registration. All codes
N4464J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kansas
Standard 2020-04-08 ValidFAA registration status code V: Valid registration. All codes
N7705D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Mississippi
Standard 2020-04-08 ValidFAA registration status code V: Valid registration. All codes
N9045D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Georgia
Standard 2020-04-08 ValidFAA registration status code V: Valid registration. All codes
N9740D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-04-08 ValidFAA registration status code V: Valid registration. All codes
N1079M Cessna
172L
Fixed-wing, single engine General Aviation LLC
Henderson, Nevada
Standard 2020-04-07 ValidFAA registration status code V: Valid registration. All codes
N20742 Cessna
172M
Fixed-wing, single engine Iowa Lakes Community College
Estherville, Iowa
Standard 2020-04-07 ValidFAA registration status code V: Valid registration. All codes
N2884D Piper
PA-28-161
Fixed-wing, single engine Three Wing Flight School LLC
Stratford, Connecticut
Standard 2020-04-07 ValidFAA registration status code V: Valid registration. All codes
N4332N Piper
PA-28-161
Fixed-wing, single engine Three Wing Flight School LLC
Stratford, Connecticut
Standard 2020-04-07 ValidFAA registration status code V: Valid registration. All codes
N5967W Piper
PA-28-150
Fixed-wing, single engine Zillah Heights Cherry Growers LLC
Zillah, Washington
Standard 2020-04-07 ValidFAA registration status code V: Valid registration. All codes
N7022Q Cessna
172L
Fixed-wing, single engine Individual owner
Wyoming
Standard 2020-04-07 ValidFAA registration status code V: Valid registration. All codes
N7354G Cessna
172K
Fixed-wing, single engine Right Rudder LLC
Rexburg, Idaho
Standard 2020-04-07 ValidFAA registration status code V: Valid registration. All codes
N751BK Cessna
172N
Fixed-wing, single engine General Aviation LLC
Henderson, Nevada
Standard 2020-04-07 ValidFAA registration status code V: Valid registration. All codes
N9572H Cessna
172M
Fixed-wing, single engine General Aviation LLC
Henderson, Nevada
Standard 2020-04-07 ValidFAA registration status code V: Valid registration. All codes
N5787U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2020-04-06 ValidFAA registration status code V: Valid registration. All codes
N8131X Piper
PA-28-161
Fixed-wing, single engine C&W Leasing
Cedar Rapids, Iowa
Standard 2020-04-06 ValidFAA registration status code V: Valid registration. All codes
N8279J Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
Texas
Standard 2020-04-06 ValidFAA registration status code V: Valid registration. All codes
N2889X Cessna
177
Fixed-wing, single engine Individual owner
Montana
Standard 2020-04-03 ValidFAA registration status code V: Valid registration. All codes
N136JM Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N1905V Cessna
172M
Fixed-wing, single engine New Horizons Aviation INC
Goshen, Indiana
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N277SA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Standard 2020-04-02 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N3222Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
South Dakota
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N36249 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Arizona
Multiple 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N44203 Piper
PA-28-151
Fixed-wing, single engine Skyline Solutions INC
Deland, Florida
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N55942 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N6325R Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N6454Z Piper
PA-25
Fixed-wing, single engine Simmons Aviation Services LLC
Pawcatuck, Connecticut
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N656SF Cessna
172N
Fixed-wing, single engine Skyfusion II LLC
Atlanta, Georgia
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N6706B Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N7402R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N7701D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Colorado
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N87WH Walters George E
LONG EZ
Fixed-wing, single engine Individual owner
Virginia
Experimental 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N9679U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-04-02 ValidFAA registration status code V: Valid registration. All codes
N2PX Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2020-04-01 ValidFAA registration status code V: Valid registration. All codes
N5464L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Utah
Standard 2020-04-01 ValidFAA registration status code V: Valid registration. All codes
N716RL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2020-04-01 ValidFAA registration status code V: Valid registration. All codes
N738RL Cessna
172N
Fixed-wing, single engine Flying Dreams 2 LLC
Louisville, Kentucky
Standard 2020-04-01 ValidFAA registration status code V: Valid registration. All codes
N87109 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Montana
Standard 2020-04-01 ValidFAA registration status code V: Valid registration. All codes
N99048 Cessna
172N
Fixed-wing, single engine Bradley Aircraft CO
Columbus, Indiana
Standard 2020-04-01 ValidFAA registration status code V: Valid registration. All codes
N26831 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2020-03-31 ValidFAA registration status code V: Valid registration. All codes
N3453Q Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2020-03-31 ValidFAA registration status code V: Valid registration. All codes
N4454A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-03-31 ValidFAA registration status code V: Valid registration. All codes
N4617R Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2020-03-31 ValidFAA registration status code V: Valid registration. All codes
N5272A Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Wisconsin
Standard 2020-03-31 ValidFAA registration status code V: Valid registration. All codes
N738JD Cessna
172N
Fixed-wing, single engine Clover Management Systems INC
Sanford, Florida
Standard 2020-03-31 ValidFAA registration status code V: Valid registration. All codes
N75535 Cessna
172N
Fixed-wing, single engine Skyhawk Cowboys LLC
Port Angeles, Washington
Standard 2020-03-31 ValidFAA registration status code V: Valid registration. All codes
N137ER Socata
TB 9 TAMPICO
Fixed-wing, single engine Tn Tfc LLC
Nashville, Tennessee
Standard 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N1842J Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Jersey
Standard 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N3161P Piper
PA-23
Fixed-wing, multi-engine Ega Aero Specialty Services LLC
Beaufort, South Carolina
Standard 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N33CR Piper
PA-28-140
Fixed-wing, single engine Constitutional Defense Arizona LLC
Scottsdale, Arizona
Standard 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N3905F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N418RL Greener Robert
RG-3B
Fixed-wing, single engine Individual owner
California
Experimental 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N6212F Cessna
172N
Fixed-wing, single engine Parker Helicopter LLC
Watsonville, California
Standard 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N64EF Cessna
172M
Fixed-wing, single engine Hampton Flying Services LLC
Portsmouth, New Hampshire
Standard 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N7084Q Cessna
172L
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N888TB Cessna
172K
Fixed-wing, single engine Individual owner
Arizona
Multiple 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N99341 Cessna
172P
Fixed-wing, single engine Jlinn Aviation INC
Quinlan, Texas
Standard 2020-03-30 ValidFAA registration status code V: Valid registration. All codes
N172JJ Cessna
172M
Fixed-wing, single engine Fort Leavenworth Flying Activity
Fort Leavenworth, Kansas
Standard 2020-03-27 ValidFAA registration status code V: Valid registration. All codes
N5783F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Standard 2020-03-27 ValidFAA registration status code V: Valid registration. All codes
N6071D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Washington
Standard 2020-03-27 ValidFAA registration status code V: Valid registration. All codes
N4790J Cessna
172N
Fixed-wing, single engine Amanzi LLC
Brasstown, North Carolina
Standard 2020-03-26 ValidFAA registration status code V: Valid registration. All codes
N549JT Rumney Thomas G
GLASTAR
Fixed-wing, single engine Pas Aviation INC
Modesto, California
Experimental 2020-03-26 ValidFAA registration status code V: Valid registration. All codes
N75972 Cessna
172N
Fixed-wing, single engine Aircraft Resource Center INC
Lakeville, Minnesota
Standard 2020-03-26 ValidFAA registration status code V: Valid registration. All codes
N80184 Cessna
172M
Fixed-wing, single engine Ljmf LLC
Hays, Kansas
Standard 2020-03-26 ValidFAA registration status code V: Valid registration. All codes
N1930V Cessna
172M
Fixed-wing, single engine Dodson International Parts INC
Rantoul, Kansas
Standard 2020-03-25 ValidFAA registration status code V: Valid registration. All codes
N2014C Tony S Long
CANYON CUB
Fixed-wing, single engine Individual owner
Washington
Experimental 2020-03-25 ValidFAA registration status code V: Valid registration. All codes
N21564 Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2020-03-25 ValidFAA registration status code V: Valid registration. All codes
N461TJ Cessna
172K
Fixed-wing, single engine Individual owner
U.S. Virgin Islands
Standard 2020-03-25 ValidFAA registration status code V: Valid registration. All codes
N4844F Cessna
172N
Fixed-wing, single engine Knightair Enterprises LLC
Caro, Michigan
Standard 2020-03-25 ValidFAA registration status code V: Valid registration. All codes
N55968 Cawood John C
STARDUSTER SA-100
Fixed-wing, single engine Individual owner
Michigan
Experimental 2020-03-25 ValidFAA registration status code V: Valid registration. All codes
N79027 Cessna
172K
Fixed-wing, single engine Arrow North LLC
Missoula, Montana
Standard 2020-03-25 ValidFAA registration status code V: Valid registration. All codes
N26122 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Smile Givers
Chico, California
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N3107Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Oregon
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N39FZ Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N4479R Cessna
172M
Fixed-wing, single engine Up and Up Aviation LLC
Magnolia, Texas
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N5735W Piper
PA-28-150
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N6269D Cessna
172N
Fixed-wing, single engine Congressional Flying Club INC
Gaithersburg, Maryland
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N807AP Piper
PA-28-151
Fixed-wing, single engine Texas South Wind Aviation LLC
Kenedy, Texas
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N82076 Piper
PA-18-150
Fixed-wing, single engine Kustatan Leasing LLC
Nikiski, Alaska
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N8734N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N9286M Piper
PA-28-161
Fixed-wing, single engine Wiley Aviation LLC
Murfreesboro, Arkansas
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N9858P Piper
PA-18-150
Fixed-wing, single engine Bentley Aero INC
Wilmington, Delaware
Standard 2020-03-24 ValidFAA registration status code V: Valid registration. All codes
N176L Stimple Gerald L
LANCAIR 235
Fixed-wing, single engine Individual owner
Georgia
Experimental 2020-03-23 ValidFAA registration status code V: Valid registration. All codes
N391KS Sibley Kent V
ACRO SPORT II
Fixed-wing, single engine Individual owner
South Carolina
Experimental 2020-03-23 ValidFAA registration status code V: Valid registration. All codes
N9881U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
South Dakota
Standard 2020-03-23 ValidFAA registration status code V: Valid registration. All codes
N113CK Jacobs Donald
RV6-A
Fixed-wing, single engine Co-owned owner
Oklahoma
Experimental 2020-03-20 ValidFAA registration status code V: Valid registration. All codes
N80476 Cessna
172M
Fixed-wing, single engine Sky Roamers LLC
Columbus, Nebraska
Standard 2020-03-20 ValidFAA registration status code V: Valid registration. All codes
N2369J Beech
23
Fixed-wing, single engine Individual owner
Indiana
Standard 2020-03-19 ValidFAA registration status code V: Valid registration. All codes
N316JD Martinez John F
RV-4
Fixed-wing, single engine Co-owned owner
California
Experimental 2020-03-19 ValidFAA registration status code V: Valid registration. All codes
N62527 Cessna
172P
Fixed-wing, single engine Flybarely LLC
Manitowoc, Wisconsin
Standard 2020-03-19 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.