The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 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
N12872 Cessna
172M
Fixed-wing, single engine Advanced Aviation and Aircraft Rental LLC
Lawrenceville, Georgia
Standard 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N13203 Cessna
172M
Fixed-wing, single engine Iowa Lakes Community College
Estherville, Iowa
Standard 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N1602B Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N20579 Helmkamp Eugene E
RV6A
Fixed-wing, single engine Individual owner
Idaho
Experimental 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N5947W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Texas
Standard 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N7214J Piper
PA-28-140
Fixed-wing, single engine Falcon Flyers LLC
Hamilton, Montana
Standard 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N7565R Piper
PA-28-140
Fixed-wing, single engine Knox County Flying Club
Owls Head, Maine
Standard 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N8466B Piper
PA-28-161
Fixed-wing, single engine Paphos Airways LLC
Farmingdale, New York
Standard 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N9800W Piper
PA-28-140
Fixed-wing, single engine Piper Solutions LLC
Lakewood, New Jersey
Standard 2024-07-29 ValidFAA registration status code V: Valid registration. All codes
N36393 Piper
PA-28-161
Fixed-wing, single engine Meriden Aviation Center LLC
Meriden, Connecticut
Standard 2024-07-28 ValidFAA registration status code V: Valid registration. All codes
N55169 Cessna
172P
Fixed-wing, single engine Jin Jin Aviation LLC
Anchorage, Alaska
Standard 2024-07-28 ValidFAA registration status code V: Valid registration. All codes
N5581W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-07-28 ValidFAA registration status code V: Valid registration. All codes
N7523R Piper
PA-28-140
Fixed-wing, single engine Florida Flyers Aviation LLC
Deltona, Florida
Standard 2024-07-28 ValidFAA registration status code V: Valid registration. All codes
N7595R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-07-28 ValidFAA registration status code V: Valid registration. All codes
N7747G Cessna
172L
Fixed-wing, single engine Kelley Aircraft LLC
Weyers Cave, Virginia
Standard 2024-07-28 ValidFAA registration status code V: Valid registration. All codes
N98354 Cessna
172P
Fixed-wing, single engine Jin Jin Aviation LLC
Anchorage, Alaska
Standard 2024-07-28 ValidFAA registration status code V: Valid registration. All codes
N20158 Cessna
172M
Fixed-wing, single engine Vbp Services LLC
Wainscott, New York
Standard 2024-07-27 ValidFAA registration status code V: Valid registration. All codes
N26424 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-07-27 ValidFAA registration status code V: Valid registration. All codes
N489P Piper
PA-28-140
Fixed-wing, single engine Wsi Southwest INC
Cliff, New Mexico
Standard 2024-07-27 ValidFAA registration status code V: Valid registration. All codes
N5498H Cessna
172M
Fixed-wing, single engine Gulf Atlantic Airways INC
Gainesville, Florida
Standard 2024-07-27 ValidFAA registration status code V: Valid registration. All codes
N64508 Cessna
172M
Fixed-wing, single engine Roseville Aviation LLC
Roxboro, North Carolina
Standard 2024-07-27 ValidFAA registration status code V: Valid registration. All codes
N8336G Piper
PA-28-181
Fixed-wing, single engine Golden Age N8336G LLC
Norwalk, Iowa
Standard 2024-07-27 ValidFAA registration status code V: Valid registration. All codes
N9213K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2024-07-27 ValidFAA registration status code V: Valid registration. All codes
N23490 Robinson Helicopter
R22 BETA
Helicopter Lg Mcdonald Enterprises INC
Rose Bud, Arkansas
Standard 2024-07-26 ValidFAA registration status code V: Valid registration. All codes
N2777E Cessna
172M
Fixed-wing, single engine Top Flight Aviation INC
Corona, California
Standard 2024-07-26 ValidFAA registration status code V: Valid registration. All codes
N3864Q Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2024-07-26 ValidFAA registration status code V: Valid registration. All codes
N4116Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-07-26 ValidFAA registration status code V: Valid registration. All codes
N4121J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-07-26 ValidFAA registration status code V: Valid registration. All codes
N6983D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Texas
Multiple 2024-07-26 ValidFAA registration status code V: Valid registration. All codes
N8085E Cessna
172N
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2024-07-26 ValidFAA registration status code V: Valid registration. All codes
N9889W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2024-07-26 ValidFAA registration status code V: Valid registration. All codes
N2246Y Cessna
177
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2024-07-25 ValidFAA registration status code V: Valid registration. All codes
N41789 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-07-25 ValidFAA registration status code V: Valid registration. All codes
N44442 Piper
PA-28-180
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2024-07-25 ValidFAA registration status code V: Valid registration. All codes
N515KG American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Florida
Standard 2024-07-25 ValidFAA registration status code V: Valid registration. All codes
N5640E Cessna
172N
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2024-07-25 ValidFAA registration status code V: Valid registration. All codes
N717JD Piper
PA-18-150
Fixed-wing, single engine Individual owner
Minnesota
Multiple 2024-07-25 ValidFAA registration status code V: Valid registration. All codes
N9518S Aeronca
7GCB
Fixed-wing, single engine Individual owner
North Dakota
Standard 2024-07-25 ValidFAA registration status code V: Valid registration. All codes
N162K Piper
PA-18-150
Fixed-wing, single engine Merge Mafia LLC
Wall, Texas
Standard 2024-07-24 ValidFAA registration status code V: Valid registration. All codes
N26471 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Kilroy Aviation LLC
Versailles, Kentucky
Standard 2024-07-24 ValidFAA registration status code V: Valid registration. All codes
N3787P Pickrell James Syme Jr
SPEZIO SPORT DAL-1
Fixed-wing, single engine Individual owner
Delaware
Experimental 2024-07-24 ValidFAA registration status code V: Valid registration. All codes
N5505U Piper
PA-28-140
Fixed-wing, single engine Paper Plane Aviation LLC
Avon Park, Florida
Standard 2024-07-24 ValidFAA registration status code V: Valid registration. All codes
N5506U Piper
PA-28-140
Fixed-wing, single engine Paper Plane Aviation LLC
Avon Park, Florida
Standard 2024-07-24 ValidFAA registration status code V: Valid registration. All codes
N7141B Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2024-07-24 ValidFAA registration status code V: Valid registration. All codes
N10GA Mcginnis James L
GLASAIR II FT
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N1779J Piper
PA-28-140
Fixed-wing, single engine Midwest Aviators
Robinson, Illinois
Standard 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N19707 Cessna
172L
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N2723B Piper
PA-28-140
Fixed-wing, single engine Piston Aviation LLC
Saint Charles, Missouri
Standard 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N5394F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N6962J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N70032 Cessna
172M
Fixed-wing, single engine Alpha Wings INC
Willoughby, Ohio
Standard 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N733NP Cessna
172N
Fixed-wing, single engine N733Np LLC
Port Orange, Florida
Standard 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N80456 Cessna
172M
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N86RL Nickle C R
ACRO II
Fixed-wing, single engine Green Aviation LLC
Hedgesville, West Virginia
Experimental 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N9653D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2024-07-23 ValidFAA registration status code V: Valid registration. All codes
N13884 Cessna
172M
Fixed-wing, single engine Triple F Aviation LLC
Scott City, Kansas
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N18ST Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N2295T Piper
PA-28-140
Fixed-wing, single engine Ahs Aero LLC
Leo, Indiana
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N2971P Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N30064 Cessna
177
Fixed-wing, single engine Avarix INC
Cool, California
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N4188P Piper
PA-23-160
Fixed-wing, multi-engine Aero Club Valkaria LLC
Malabar, Florida
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N5080X Champion
7GCBC
Fixed-wing, single engine Individual owner
New York
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N7018D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N7672J Piper
PA-28R-180
Fixed-wing, single engine Individual owner
New York
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N77974 Luscombe
8E
Fixed-wing, single engine Tupelo Aeronautics INC
Tupelo, Mississippi
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N79447 Cessna
172K
Fixed-wing, single engine Aroostook Aviation LLC
Millinocket, Maine
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N9146L Champion
7GCAA
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N9585V Cessna
172M
Fixed-wing, single engine Harrington Aviation LLC
Scarborough, Maine
Standard 2024-07-22 ValidFAA registration status code V: Valid registration. All codes
N1255P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Oregon
Standard 2024-07-21 ValidFAA registration status code V: Valid registration. All codes
N4217J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-07-21 ValidFAA registration status code V: Valid registration. All codes
N6756J Piper
PA-28-140
Fixed-wing, single engine Amv Aviation LLC
Miami, Florida
Standard 2024-07-21 ValidFAA registration status code V: Valid registration. All codes
N1990W Beech
B19
Fixed-wing, single engine Obsidian Defense LLC
Tampa, Florida
Standard 2024-07-20 ValidFAA registration status code V: Valid registration. All codes
N2737J Cessna
172N
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-07-20 ValidFAA registration status code V: Valid registration. All codes
N4304T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-07-20 ValidFAA registration status code V: Valid registration. All codes
N5495W Piper
PA-28-160
Fixed-wing, single engine Wings Over Lake Norman LLC
Mooresville, North Carolina
Standard 2024-07-20 ValidFAA registration status code V: Valid registration. All codes
N573S Schmid
THORP T-18
Fixed-wing, single engine Individual owner
Oregon
Experimental 2024-07-20 ValidFAA registration status code V: Valid registration. All codes
N8446D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-07-20 ValidFAA registration status code V: Valid registration. All codes
N1373E Cessna
172N
Fixed-wing, single engine Eagle Aviation LLC
Spearfish, South Dakota
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N172MX Cessna
172N
Fixed-wing, single engine Dmac Aircraft LLC
Savannah, Georgia
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N35683 Cessna
172I
Fixed-wing, single engine Dmac Aircraft LLC
Savannah, Georgia
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N3773 Lane Kevin J
RV6A
Fixed-wing, single engine Individual owner
Washington
Experimental 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N44583 Piper
PA-28-151
Fixed-wing, single engine Griffin Avionics INC
Hyannis, Massachusetts
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N5543W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Washington
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N64450 Cessna
172M
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N6870J Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N7167R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N734RF Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N7680R Beech
B19
Fixed-wing, single engine Individual owner
Texas
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N8067D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N9657P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-07-19 ValidFAA registration status code V: Valid registration. All codes
N140ND Piper
PA-28-161
Fixed-wing, single engine Coco Aircraft INC
Merritt Island, Florida
Standard 2024-07-18 ValidFAA registration status code V: Valid registration. All codes
N155DR Reasoner Donald J
RV-6 VANS ACFT INC
Fixed-wing, single engine Individual owner
Ohio
Experimental 2024-07-18 ValidFAA registration status code V: Valid registration. All codes
N7569D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-07-18 ValidFAA registration status code V: Valid registration. All codes
N823EJ Cochran Sam E
SACO II
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2024-07-18 ValidFAA registration status code V: Valid registration. All codes
N9044D Piper
PA-18-150
Fixed-wing, single engine Arctic Backcountry Flying Service LLC
Kotzebue, Alaska
Multiple 2024-07-18 ValidFAA registration status code V: Valid registration. All codes
N2978P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-07-17 ValidFAA registration status code V: Valid registration. All codes
N34WT Piper
PA-28-151
Fixed-wing, single engine T & S Aviation LLC
Lavonia, Georgia
Standard 2024-07-17 ValidFAA registration status code V: Valid registration. All codes
N4218T Piper
PA-28-140
Fixed-wing, single engine Golden Pick LLC
Maple Plain, Minnesota
Standard 2024-07-17 ValidFAA registration status code V: Valid registration. All codes
N649MB Berg George C
VAN RV-6
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2024-07-17 ValidFAA registration status code V: Valid registration. All codes
N861AP Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2024-07-17 ValidFAA registration status code V: Valid registration. All codes
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Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.