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
N1919B Beech
B19
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-12-31 ValidFAA registration status code V: Valid registration. All codes
N20A Piper
PA-23
Fixed-wing, multi-engine Lilbit Industries LLC
Oklahoma City, Oklahoma
Standard 2022-12-31 ValidFAA registration status code V: Valid registration. All codes
N331W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2022-12-31 ValidFAA registration status code V: Valid registration. All codes
N79283 Cessna
172K
Fixed-wing, single engine Bradley Flying Association
Peoria, Illinois
Standard 2022-12-31 ValidFAA registration status code V: Valid registration. All codes
N237CS Piper
PA-28-140
Fixed-wing, single engine Horizon Flyers LLC
Kingsford, Michigan
Standard 2022-12-30 ValidFAA registration status code V: Valid registration. All codes
N64915 Cessna
172P
Fixed-wing, single engine Northwoods Air LLC
Orono, Maine
Standard 2022-12-30 ValidFAA registration status code V: Valid registration. All codes
N6618W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2022-12-30 ValidFAA registration status code V: Valid registration. All codes
N888LH Fogerson Richard D
RV-6A
Fixed-wing, single engine Individual owner
Florida
Experimental 2022-12-30 ValidFAA registration status code V: Valid registration. All codes
N9679W Piper
PA-28-140
Fixed-wing, single engine Dnr Solutions LLC
Idaho Falls, Idaho
Standard 2022-12-30 ValidFAA registration status code V: Valid registration. All codes
N995RV Richard C Rhoden
VANS RV-9A
Fixed-wing, single engine Individual owner
Texas
Experimental 2022-12-29 ValidFAA registration status code V: Valid registration. All codes
N1321R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
South Carolina
Standard 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N20355 Cessna
172M
Fixed-wing, single engine N20355 LLC
Ypsilanti, Michigan
Standard 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N239EV South Florida Ultralights Inc
RV-6
Fixed-wing, single engine Three Ninety Eighth LLC
Waco, Texas
Experimental 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N2937N Piper
PA-28-161
Fixed-wing, single engine Delaware State University Aviation Program
Dover, Delaware
Standard 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N3316P Piper
PA-23-160
Fixed-wing, multi-engine Crew Sourcing INC
Wilmington, Delaware
Standard 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N41306 Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N437PH Cessna
172N
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N6930W Piper
PA-28-140
Fixed-wing, single engine Flat Out Aviation LLC
Mercer, Missouri
Standard 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N776MC Piper
PA-23
Fixed-wing, multi-engine Crew Sourcing INC
Wilmington, Delaware
Standard 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N9841W Piper
PA-28-140
Fixed-wing, single engine Dubois Aviation INC
Chino, California
Standard 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N9993E Cessna
172N
Fixed-wing, single engine Cruise Flight Academy INC
Dalton, Georgia
Standard 2022-12-28 ValidFAA registration status code V: Valid registration. All codes
N2568J Piper
PA-18-150
Fixed-wing, single engine State of Utah
Salt Lake City, Utah
Standard 2022-12-27 ValidFAA registration status code V: Valid registration. All codes
N4345J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2022-12-27 ValidFAA registration status code V: Valid registration. All codes
N46631 Cessna
172K
Fixed-wing, single engine Individual owner
Florida
Standard 2022-12-27 ValidFAA registration status code V: Valid registration. All codes
N5220W Piper
PA-28
Fixed-wing, single engine Individual owner
Florida
Standard 2022-12-27 ValidFAA registration status code V: Valid registration. All codes
N5765U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2022-12-27 ValidFAA registration status code V: Valid registration. All codes
N12745 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N19720 Cessna
172L
Fixed-wing, single engine Gooney Bird LLC
Chandler, Arizona
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N200PF Cessna
172P
Fixed-wing, single engine Primary Flight Control LLC
Fleming Island, Florida
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N21725 Cessna
172M
Fixed-wing, single engine Optic Air LLC
Sioux Center, Iowa
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N2815P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N4179F Piper
PA-28-151
Fixed-wing, single engine Jupiter Flight Service and Investing LLC
Lithonia, Georgia
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N4203Z Piper
PA-18-150
Fixed-wing, single engine Longboat Key Aviation LLC
Wooster, Ohio
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N5149E Cessna
172N
Fixed-wing, single engine Ace of Spades Aviation LLC
Las Vegas, Nevada
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N5238K Cessna
172P
Fixed-wing, single engine Optic Air LLC
Sioux Center, Iowa
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N52KK Cessna
177
Fixed-wing, single engine Individual owner
California
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N586S Cessna
172P
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N734UE Cessna
172N
Fixed-wing, single engine Jupiter Flight Service and Investing LLC
Lithonia, Georgia
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N8459F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N9236H Cessna
172M
Fixed-wing, single engine Optic Air LLC
Sioux Center, Iowa
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N9486B Cessna
172RG
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N9500D Piper
PA-22-160
Fixed-wing, single engine Flight Club LLC
Anchorage, Alaska
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N9540D Piper
PA-22-160
Fixed-wing, single engine Gibsons Gas INC
Holland, New York
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N9893W Piper
PA-28-140
Fixed-wing, single engine Sky High Aviation LLC
Streamwood, Illinois
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N204RJ American Champion Aircraft
7GCBC
Fixed-wing, single engine Flying Hoosier Js LLC
Carmel, Indiana
Standard 2022-12-24 ValidFAA registration status code V: Valid registration. All codes
N4182T Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2022-12-24 ValidFAA registration status code V: Valid registration. All codes
N4214H Piper
PA-14
Fixed-wing, single engine Individual owner
Colorado
Standard 2022-12-24 ValidFAA registration status code V: Valid registration. All codes
N550DE Eidal Peter M
RV 4
Fixed-wing, single engine Individual owner
Virginia
Experimental 2022-12-24 ValidFAA registration status code V: Valid registration. All codes
N55182 Cessna
172P
Fixed-wing, single engine Sofla Sky Solutions LLC
Deerfield Beach, Florida
Standard 2022-12-24 ValidFAA registration status code V: Valid registration. All codes
N639MR Piper
PA-28-151
Fixed-wing, single engine Individual owner
South Carolina
Standard 2022-12-24 ValidFAA registration status code V: Valid registration. All codes
N7623H Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-12-24 ValidFAA registration status code V: Valid registration. All codes
N1229U Cessna
172M
Fixed-wing, single engine Mcdonald Air Services LLC
Saint Johns, Michigan
Standard 2022-12-23 ValidFAA registration status code V: Valid registration. All codes
N4376T Piper
PA-28-140
Fixed-wing, single engine Zara Aviation CORP
Chatsworth, California
Standard 2022-12-23 ValidFAA registration status code V: Valid registration. All codes
N5244E Cessna
172N
Fixed-wing, single engine Opal Aviation LLC
Athens, Georgia
Standard 2022-12-23 ValidFAA registration status code V: Valid registration. All codes
N5649W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Arkansas
Standard 2022-12-23 ValidFAA registration status code V: Valid registration. All codes
N13154 Cessna
172M
Fixed-wing, single engine Individual owner
Idaho
Standard 2022-12-22 ValidFAA registration status code V: Valid registration. All codes
N1830J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-12-22 ValidFAA registration status code V: Valid registration. All codes
N381J Cessna
172P
Fixed-wing, single engine US Aviation Group LLC
Denton, Texas
Standard 2022-12-22 ValidFAA registration status code V: Valid registration. All codes
N83349 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-12-22 ValidFAA registration status code V: Valid registration. All codes
N84243 Cessna
172K
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2022-12-21 ValidFAA registration status code V: Valid registration. All codes
N4321Q Cessna
172L
Fixed-wing, single engine W H Flying Club INC
Kingston, Michigan
Standard 2022-12-20 ValidFAA registration status code V: Valid registration. All codes
N6355W Piper
PA-28-140
Fixed-wing, single engine Crosswind Aviation INC
Oakley, Kansas
Standard 2022-12-20 ValidFAA registration status code V: Valid registration. All codes
N757CS Cessna
152
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2022-12-19 ValidFAA registration status code V: Valid registration. All codes
N7626F Piper
PA-28-151
Fixed-wing, single engine Jamestown Jet Center INC
Jamestown, North Dakota
Standard 2022-12-19 ValidFAA registration status code V: Valid registration. All codes
N79919 Cessna
172K
Fixed-wing, single engine Dsr Cherokee 180 LLC
Dallas, Texas
Standard 2022-12-19 ValidFAA registration status code V: Valid registration. All codes
N167TC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N3816Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Restricted 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N4418R Cessna
172M
Fixed-wing, single engine Teton Leasing LLC
Pocatello, Idaho
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N5400L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Illinois
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N558FL Piper
PA-28-140
Fixed-wing, single engine Royal Greene Holdings LLC
Spout Spring, Virginia
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N62350 Cessna
172P
Fixed-wing, single engine Flycarolina LLC
Concord, North Carolina
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N6471R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N734NV Cessna
172N
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N907GP Pepperd Greg J
CARIBOU CRUISER
Fixed-wing, single engine Co-owned owner
Alaska
Experimental 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N95053 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N9627H Cessna
172M
Fixed-wing, single engine Superbuyer INC
San Jose, California
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N97766 Cessna
172P
Fixed-wing, single engine Wiggins Air Patrol LLC
Wichita, Kansas
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N41267 Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2022-12-16 ValidFAA registration status code V: Valid registration. All codes
N5192H Piper
PA-14
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-12-16 ValidFAA registration status code V: Valid registration. All codes
N5281S Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2022-12-16 ValidFAA registration status code V: Valid registration. All codes
N84250 Cessna
172K
Fixed-wing, single engine Individual owner
Colorado
Standard 2022-12-16 ValidFAA registration status code V: Valid registration. All codes
N144JM Piper Aircraft Corp
PA-18-150
Fixed-wing, single engine Bavarian Barnstormers 2 INC
North Fort Myers, Florida
Standard 2022-12-15 ValidFAA registration status code V: Valid registration. All codes
N1471T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-12-15 ValidFAA registration status code V: Valid registration. All codes
N1TA Cessna
172L
Fixed-wing, single engine Co-owned owner
Delaware
Standard 2022-12-15 ValidFAA registration status code V: Valid registration. All codes
N27AH Cessna
172M
Fixed-wing, single engine M W T Aviation LLC
Jamestown, New York
Standard 2022-12-15 ValidFAA registration status code V: Valid registration. All codes
N309DM Murphy Daniel L
RV-9A
Fixed-wing, single engine Individual owner
Nevada
Experimental 2022-12-15 ValidFAA registration status code V: Valid registration. All codes
N5020W Piper
PA-28
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-12-15 ValidFAA registration status code V: Valid registration. All codes
N5467W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-12-15 ValidFAA registration status code V: Valid registration. All codes
N6383H Cessna
150L
Fixed-wing, single engine Individual owner
Iowa
Standard 2022-12-15 ValidFAA registration status code V: Valid registration. All codes
N7494Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2022-12-15 ValidFAA registration status code V: Valid registration. All codes
N100YA American
AA-5
Fixed-wing, single engine Individual owner
California
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N3528P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N4104Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N4635D Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N4784E Cessna
172N
Fixed-wing, single engine Individual owner
Alabama
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N5768U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Maine
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N5943E Cessna
172N
Fixed-wing, single engine Plane Zane LLC
Stuart, Florida
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N63716 Cessna
172P
Fixed-wing, single engine Individual owner
Florida
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N64301 Cessna
172M
Fixed-wing, single engine B&R Aircraft LLC
Wadsworth, Ohio
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N73601 Cessna
172M
Fixed-wing, single engine Flex Air Holdings INC
San Diego, California
Standard 2022-12-14 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.