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
N9635V Cessna
172M
Fixed-wing, single engine 35 Victor LLC
Decatur, Georgia
Standard 2022-07-21 ValidFAA registration status code V: Valid registration. All codes
N9785W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Louisiana
Standard 2022-07-21 ValidFAA registration status code V: Valid registration. All codes
N9799W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-07-21 ValidFAA registration status code V: Valid registration. All codes
N12336 Cessna
172M
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Standard 2022-07-20 ValidFAA registration status code V: Valid registration. All codes
N730LB Cessna
172M
Fixed-wing, single engine Early Bird Aviation LLC
Rillito, Arizona
Standard 2022-07-20 ValidFAA registration status code V: Valid registration. All codes
N97919 Cessna
172P
Fixed-wing, single engine Christiansen Aviation LLC
Wilmington, Delaware
Standard 2022-07-20 ValidFAA registration status code V: Valid registration. All codes
N3503Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2022-07-19 ValidFAA registration status code V: Valid registration. All codes
N3565P Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
New Mexico
Restricted 2022-07-19 ValidFAA registration status code V: Valid registration. All codes
N40246 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Restricted 2022-07-19 ValidFAA registration status code V: Valid registration. All codes
N5758F Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2022-07-19 ValidFAA registration status code V: Valid registration. All codes
N5805D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kansas
Standard 2022-07-19 ValidFAA registration status code V: Valid registration. All codes
N9543L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine 10 Skies LLC
Rockport, Texas
Standard 2022-07-19 ValidFAA registration status code V: Valid registration. All codes
N6774B Piper
PA-18-150
Fixed-wing, single engine Legacy Aviation and Sales LLC
Ririe, Idaho
Standard 2022-07-18 ValidFAA registration status code V: Valid registration. All codes
N6869J Piper
PA-28-151
Fixed-wing, single engine Na Aviation LLC
Mount Vernon, Ohio
Standard 2022-07-18 ValidFAA registration status code V: Valid registration. All codes
N1339C Piper
PA-22S-135
Fixed-wing, single engine Walt'S Kustom Kreations INC
Palatka, Florida
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N216RK Avions Pierre Robin
PIERRE ROBIN R2160
Fixed-wing, single engine Individual owner
California
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N3794K Piper
PA-28-140
Fixed-wing, single engine 10 Skies LLC
Rockport, Texas
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N46638 Cessna
172K
Fixed-wing, single engine Pro Aviation LLC
Sanger, Texas
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N68JC Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N737GK Cessna
172N
Fixed-wing, single engine General Aviation LLC
Henderson, Nevada
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N739LK Cessna
172N
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N8096Q Piper
PA-28-161
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N8727N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N9866G Cessna
172L
Fixed-wing, single engine 198 Main Street Aviation LLC
Sullivan, Wisconsin
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N2114P Piper
PA-23-150
Fixed-wing, multi-engine Riggin Flight Service INC
Madison, South Dakota
Standard 2022-07-15 ValidFAA registration status code V: Valid registration. All codes
N2305P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2022-07-15 ValidFAA registration status code V: Valid registration. All codes
N428JS Stuart James L
THORP T-18
Fixed-wing, single engine Individual owner
Missouri
Experimental 2022-07-15 ValidFAA registration status code V: Valid registration. All codes
N7011B Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Oregon
Special flight permit 2022-07-15 ValidFAA registration status code V: Valid registration. All codes
N8452D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Washington
Standard 2022-07-15 ValidFAA registration status code V: Valid registration. All codes
N9954D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Michigan
Standard 2022-07-15 ValidFAA registration status code V: Valid registration. All codes
N10XC Cessna
172L
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-07-14 ValidFAA registration status code V: Valid registration. All codes
N321VT Maurer
STARDUSTER TOO SA-30
Fixed-wing, single engine Individual owner
Vermont
Experimental 2022-07-14 ValidFAA registration status code V: Valid registration. All codes
N88DE Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Kansas
Standard 2022-07-14 ValidFAA registration status code V: Valid registration. All codes
N921LC Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-07-14 ValidFAA registration status code V: Valid registration. All codes
N1737T Piper
PA-28-140
Fixed-wing, single engine N1737T LLC
West Palm Beach, Florida
Standard 2022-07-13 ValidFAA registration status code V: Valid registration. All codes
N56988 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2022-07-13 ValidFAA registration status code V: Valid registration. All codes
N56LJ Cessna
172N
Fixed-wing, single engine L & J Aviation INC
Atwater, California
Standard 2022-07-13 ValidFAA registration status code V: Valid registration. All codes
N86957 Bellanca
7GCBC
Fixed-wing, single engine Swan Creek Flying Club
Ayr, North Dakota
Standard 2022-07-13 ValidFAA registration status code V: Valid registration. All codes
N9554D Piper
PA-22-160
Fixed-wing, single engine Chase 13 LLC
Wilmington, Delaware
Standard 2022-07-13 ValidFAA registration status code V: Valid registration. All codes
N992SB Klein Robert E
VANS RV9-A
Fixed-wing, single engine Rv Nine LLC
Florence, Colorado
Experimental 2022-07-13 ValidFAA registration status code V: Valid registration. All codes
N11668 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-07-12 ValidFAA registration status code V: Valid registration. All codes
N5081U Cessna
172L
Fixed-wing, single engine Kiloecho Aeronautics LLC
Tucson, Arizona
Standard 2022-07-12 ValidFAA registration status code V: Valid registration. All codes
N5665U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2022-07-12 ValidFAA registration status code V: Valid registration. All codes
N5756F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-07-12 ValidFAA registration status code V: Valid registration. All codes
N6339R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2022-07-12 ValidFAA registration status code V: Valid registration. All codes
N6512H Cessna
172M
Fixed-wing, single engine Organization of Black Aerospace Professionals INC
Olive Branch, Mississippi
Standard 2022-07-12 ValidFAA registration status code V: Valid registration. All codes
N733WW Cessna
172N
Fixed-wing, single engine Fm Aviation INC
Concord, California
Standard 2022-07-12 ValidFAA registration status code V: Valid registration. All codes
N738DK Cessna
172N
Fixed-wing, single engine Harrison Aviators LLC
Goshen, Indiana
Standard 2022-07-12 ValidFAA registration status code V: Valid registration. All codes
N80578 Cessna
172M
Fixed-wing, single engine First Eclipse LTD
Richmond, Virginia
Standard 2022-07-12 ValidFAA registration status code V: Valid registration. All codes
N1943K Ranta Kenneth J
T-18
Fixed-wing, single engine Individual owner
Missouri
Experimental 2022-07-11 ValidFAA registration status code V: Valid registration. All codes
N43422 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-07-11 ValidFAA registration status code V: Valid registration. All codes
N56282 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-07-11 ValidFAA registration status code V: Valid registration. All codes
N614WT Piper
PA-28-140
Fixed-wing, single engine Jamestown Jet Center INC
Jamestown, North Dakota
Standard 2022-07-11 ValidFAA registration status code V: Valid registration. All codes
N6212W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-07-11 ValidFAA registration status code V: Valid registration. All codes
N739WX Cessna
172N
Fixed-wing, single engine Ace of Spades Aviation LLC
Las Vegas, Nevada
Restricted 2022-07-11 ValidFAA registration status code V: Valid registration. All codes
N9624D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-07-11 ValidFAA registration status code V: Valid registration. All codes
N121WP Palmer Wade
CUB
Fixed-wing, single engine Individual owner
Maine
Experimental 2022-07-09 ValidFAA registration status code V: Valid registration. All codes
N14BS Shickles
BILL'S AIR CASTLE
Fixed-wing, single engine Oklahoma Warbird Aviation LLC
Oklahoma City, Oklahoma
Experimental 2022-07-09 ValidFAA registration status code V: Valid registration. All codes
N174JP Cessna
172L
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-07-09 ValidFAA registration status code V: Valid registration. All codes
N1892T Piper
PA-28-140
Fixed-wing, single engine B&R Aircraft LLC
Wadsworth, Ohio
Standard 2022-07-09 ValidFAA registration status code V: Valid registration. All codes
N7236J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Washington
Standard 2022-07-09 ValidFAA registration status code V: Valid registration. All codes
N7850G Cessna
172L
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-07-09 ValidFAA registration status code V: Valid registration. All codes
N80121 Cessna
172M
Fixed-wing, single engine Sky Gypsies LLC
Lansdale, Pennsylvania
Standard 2022-07-09 ValidFAA registration status code V: Valid registration. All codes
N949MD Cessna
T210L
Fixed-wing, single engine Unruh Leasing LLC
Blossom, Texas
Standard 2022-07-09 ValidFAA registration status code V: Valid registration. All codes
N9884Y Champion
7GCB
Fixed-wing, single engine Individual owner
Utah
Restricted 2022-07-09 ValidFAA registration status code V: Valid registration. All codes
N1567V Cessna
172M
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-07-08 ValidFAA registration status code V: Valid registration. All codes
N35618 Cessna
172I
Fixed-wing, single engine San Juan Flyers LLC
Friday Harbor, Washington
Standard 2022-07-08 ValidFAA registration status code V: Valid registration. All codes
N70004 Cessna
172M
Fixed-wing, single engine Gbl Aviation LLC
Laurel, Mississippi
Standard 2022-07-08 ValidFAA registration status code V: Valid registration. All codes
N7244Q Cessna
172L
Fixed-wing, single engine Individual owner
Idaho
Standard 2022-07-08 ValidFAA registration status code V: Valid registration. All codes
N7583G Cessna
172L
Fixed-wing, single engine Pebworth Properties LLC
Auburn, Washington
Standard 2022-07-08 ValidFAA registration status code V: Valid registration. All codes
N8348L Cessna
172I
Fixed-wing, single engine Individual owner
South Carolina
Standard 2022-07-08 ValidFAA registration status code V: Valid registration. All codes
N5228R Cessna
172M
Fixed-wing, single engine Mtc Leasing LLC
Sandersville, Georgia
Standard 2022-07-07 ValidFAA registration status code V: Valid registration. All codes
N61738 Cessna
172M
Fixed-wing, single engine Finn Development LLC
Kaysville, Utah
Standard 2022-07-07 ValidFAA registration status code V: Valid registration. All codes
N7839D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-07-07 ValidFAA registration status code V: Valid registration. All codes
N9389D Piper
PA-18A 150
Fixed-wing, single engine Airmotive Service LLC
Brigham City, Utah
Standard 2022-07-07 ValidFAA registration status code V: Valid registration. All codes
N4PU Cooper Walden A
PITTS S1S
Fixed-wing, single engine Individual owner
Arizona
Experimental 2022-07-06 ValidFAA registration status code V: Valid registration. All codes
N54446 Piper
PA-28-151
Fixed-wing, single engine Avia Flight Academy LLC
Stratford, Connecticut
Standard 2022-07-06 ValidFAA registration status code V: Valid registration. All codes
N623MP Piper
PA-18
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2022-07-06 ValidFAA registration status code V: Valid registration. All codes
N811RF Frazier Robert L
RV-6A
Fixed-wing, single engine Co-owned owner
Oregon
Experimental 2022-07-06 ValidFAA registration status code V: Valid registration. All codes
N8724D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Washington
Standard 2022-07-06 ValidFAA registration status code V: Valid registration. All codes
N2495 Cessna
172N
Fixed-wing, single engine Individual owner
Illinois
Standard 2022-07-02 ValidFAA registration status code V: Valid registration. All codes
N4345C Piper
PA-28-161
Fixed-wing, single engine Aeroservice Aft CORP
Miami, Florida
Standard 2022-07-02 ValidFAA registration status code V: Valid registration. All codes
N4408J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-07-02 ValidFAA registration status code V: Valid registration. All codes
N4714F Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-07-02 ValidFAA registration status code V: Valid registration. All codes
N737DY Cessna
172N
Fixed-wing, single engine Asset Flight LLC
Beaumont, Texas
Standard 2022-07-01 ValidFAA registration status code V: Valid registration. All codes
N12188 Cessna
172M
Fixed-wing, single engine Co-owned owner
Washington
Standard 2022-06-30 ValidFAA registration status code V: Valid registration. All codes
N4769A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alabama
Standard 2022-06-30 ValidFAA registration status code V: Valid registration. All codes
N11673 Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2022-06-29 ValidFAA registration status code V: Valid registration. All codes
N2892E Cessna
172N
Fixed-wing, single engine Jaars INC
Waxhaw, North Carolina
Standard 2022-06-29 ValidFAA registration status code V: Valid registration. All codes
N4807J Cessna
172N
Fixed-wing, single engine New England Aviation LLC
Plainville, Connecticut
Standard 2022-06-29 ValidFAA registration status code V: Valid registration. All codes
N55621 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2022-06-29 ValidFAA registration status code V: Valid registration. All codes
N5579F Piper
PA-28-140
Fixed-wing, single engine Seaplane Adventures LLC
Cheyenne, Wyoming
Standard 2022-06-29 ValidFAA registration status code V: Valid registration. All codes
N574KR Piper
PA-22-150
Fixed-wing, single engine Phoenix Rising Aviation INC
Bartlesville, Oklahoma
Standard 2022-06-29 ValidFAA registration status code V: Valid registration. All codes
N75GD Durkota
ACRO SPORT
Fixed-wing, single engine Individual owner
Ohio
Experimental 2022-06-29 ValidFAA registration status code V: Valid registration. All codes
N8347D Lewis David I
RV-7A
Fixed-wing, single engine Individual owner
Ohio
Experimental 2022-06-29 ValidFAA registration status code V: Valid registration. All codes
N137FS Cessna
172M
Fixed-wing, single engine T Aviation Services INC
Canovanas, Puerto Rico
Standard 2022-06-28 ValidFAA registration status code V: Valid registration. All codes
N1799P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Montana
Standard 2022-06-28 ValidFAA registration status code V: Valid registration. All codes
N6388W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2022-06-28 ValidFAA registration status code V: Valid registration. All codes
N6874W Piper
PA-28-140
Fixed-wing, single engine Era Aviation LLC
Downers Grove, Illinois
Standard 2022-06-28 ValidFAA registration status code V: Valid registration. All codes
N9634D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wyoming
Standard 2022-06-28 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.