The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 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

These connections as data: /graph/engine/lycoming-o-320-series.json · about the eFlight graph.

Aircraft newest certificates first · 27,315

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N4557T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2025-03-08 ValidFAA registration status code V: Valid registration. All codes
N5245K Cessna
172P
Fixed-wing, single engine Perun Av LLC
Cliffside Park, New Jersey
Standard 2025-03-08 ValidFAA registration status code V: Valid registration. All codes
N716DC Francis J Kolo
VANS RV4
Fixed-wing, single engine Individual owner
Illinois
Experimental 2025-03-08 ValidFAA registration status code V: Valid registration. All codes
N7446R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-03-08 ValidFAA registration status code V: Valid registration. All codes
N187HD Dewall Henry J
RV4
Fixed-wing, single engine Individual owner
Oregon
Experimental 2025-03-07 ValidFAA registration status code V: Valid registration. All codes
N3922P Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2025-03-07 ValidFAA registration status code V: Valid registration. All codes
N40RG Cessna
172M
Fixed-wing, single engine Dovy Aviation LLC
Houston, Texas
Standard 2025-03-07 ValidFAA registration status code V: Valid registration. All codes
N7854P Piper
PA-18-150
Fixed-wing, single engine Sarpy Aviation LLC
Hysham, Montana
Standard 2025-03-07 ValidFAA registration status code V: Valid registration. All codes
N84642 Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2025-03-07 ValidFAA registration status code V: Valid registration. All codes
N13185 Cessna
172M
Fixed-wing, single engine Good Flight LLC
Colchester, Connecticut
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N131SC Piper
PA-18-150
Fixed-wing, single engine Sum Livestock LLC
Ekalaka, Montana
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N2334Q Beech
23
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N2377L Beech
23
Fixed-wing, single engine Individual owner
Texas
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N2808U Socata
TAMPICO TB 9C
Fixed-wing, single engine Coastal Flight INC
Half Moon Bay, California
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N3065E Cessna
172N
Fixed-wing, single engine 3065E LLC
Westfield, Pennsylvania
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N40806 Piper
PA-28-140
Fixed-wing, single engine Sky Dream Flight School LLC
Dallas, Georgia
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N6516W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N7114B Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
California
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N734FD Cessna
172N
Fixed-wing, single engine Jays Aircraft Maintenance INC
Costa Mesa, California
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N734PW Cessna
172N
Fixed-wing, single engine Individual owner
Colorado
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N7616F Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N8129F Cessna
150F
Fixed-wing, single engine High Exposure INC
Wilmington, Delaware
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N8248N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N8490L Cessna
172I
Fixed-wing, single engine Mgg Aviation 2025 LLC
Annandale, Minnesota
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N1041Q Piper
PA-28-161
Fixed-wing, single engine Swaz Aviation LLC
Mesa, Arizona
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N1684J Piper
PA-28-140
Fixed-wing, single engine Jarriel Investments INC
Register, Georgia
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N2315T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N2442E Cessna
172N
Fixed-wing, single engine Executive Flyers INC
Sacramento, California
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N5843L American
AA-5
Fixed-wing, single engine Maschek Scott
Harker Heights, Texas
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N6446D Cessna
172N
Fixed-wing, single engine N2893E LLC
Reno, Nevada
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N738SH Cessna
172N
Fixed-wing, single engine Raider Aviation LLC
Lubbock, Texas
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N74JP Cessna
172M
Fixed-wing, single engine Gulf Coast Helicopters INC
Pearland, Texas
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N75799 Cessna
172N
Fixed-wing, single engine Ocean Breeze Aviation INC
Hollywood, Florida
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N78123 Cessna
172K
Fixed-wing, single engine Rrr3 LLC
Midway, Florida
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N8156R Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N8941D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N399AK Koelling Arlen W
VAN RV-9A
Fixed-wing, single engine Individual owner
Idaho
Experimental 2025-03-04 ValidFAA registration status code V: Valid registration. All codes
N4371Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-03-04 ValidFAA registration status code V: Valid registration. All codes
N443DT Todd Darrell M
RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-03-04 ValidFAA registration status code V: Valid registration. All codes
N64617 Cessna
172P
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2025-03-04 ValidFAA registration status code V: Valid registration. All codes
N738XL Cessna
172N
Fixed-wing, single engine M&A Aviation LLC
Vine Grove, Kentucky
Standard 2025-03-04 ValidFAA registration status code V: Valid registration. All codes
N5033W Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-03-03 ValidFAA registration status code V: Valid registration. All codes
N77ST Piper
PA-18-150
Fixed-wing, single engine Jb AG Service LLC
Colstrip, Montana
Standard 2025-03-03 ValidFAA registration status code V: Valid registration. All codes
N78596 Cessna
172K
Fixed-wing, single engine Individual owner
New Jersey
Standard 2025-03-03 ValidFAA registration status code V: Valid registration. All codes
N9505L American
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2025-03-03 ValidFAA registration status code V: Valid registration. All codes
N1646P Piper
PA-22
Fixed-wing, single engine Gerigs Trucking and Leasing INC
Hoagland, Indiana
Standard 2025-03-02 ValidFAA registration status code V: Valid registration. All codes
N19949 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2025-03-02 ValidFAA registration status code V: Valid registration. All codes
N5559F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-03-02 ValidFAA registration status code V: Valid registration. All codes
N56558 Piper
PA-28-140
Fixed-wing, single engine Onlyfly LLC
Deltona, Florida
Standard 2025-03-02 ValidFAA registration status code V: Valid registration. All codes
N739LV Cessna
172N
Fixed-wing, single engine Centennial Aircraft LLC
Boulder, Colorado
Standard 2025-03-02 ValidFAA registration status code V: Valid registration. All codes
N8050E Cessna
172N
Fixed-wing, single engine Perun Av LLC
Cliffside Park, New Jersey
Standard 2025-03-02 ValidFAA registration status code V: Valid registration. All codes
N20259 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2025-03-01 ValidFAA registration status code V: Valid registration. All codes
N41580 Piper
PA-18-150
Fixed-wing, single engine Eagle Racer LLC
Boca Raton, Florida
Standard 2025-03-01 ValidFAA registration status code V: Valid registration. All codes
N4357F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Nevada
Standard 2025-03-01 ValidFAA registration status code V: Valid registration. All codes
N8988V Cessna
172M
Fixed-wing, single engine Co-owned owner
Montana
Standard 2025-03-01 ValidFAA registration status code V: Valid registration. All codes
N94000 Cessna
172K
Fixed-wing, single engine Champion Aircraft LLC
Valdosta, Georgia
Standard 2025-03-01 ValidFAA registration status code V: Valid registration. All codes
N9786L Cessna
172P
Fixed-wing, single engine Perun Av LLC
Cliffside Park, New Jersey
Standard 2025-03-01 ValidFAA registration status code V: Valid registration. All codes
N16434 Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2025-02-28 ValidFAA registration status code V: Valid registration. All codes
N180NY Cessna
172N
Fixed-wing, single engine N180Ny LLC
Wainscott, New York
Standard 2025-02-28 ValidFAA registration status code V: Valid registration. All codes
N2572U Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2025-02-28 ValidFAA registration status code V: Valid registration. All codes
N26713 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine N26713 LLC
Gainesville, Georgia
Standard 2025-02-28 ValidFAA registration status code V: Valid registration. All codes
N38954 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Alabama
Standard 2025-02-28 ValidFAA registration status code V: Valid registration. All codes
N5466L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2025-02-28 ValidFAA registration status code V: Valid registration. All codes
N555AK Kimble James Austin
LANCAIR 320
Fixed-wing, single engine Busy Bee Helicopter LLC
Paulding, Ohio
Experimental 2025-02-28 ValidFAA registration status code V: Valid registration. All codes
N6718J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2025-02-28 ValidFAA registration status code V: Valid registration. All codes
N7324D Piper
PA-22S-150
Fixed-wing, single engine Ruach LLC
Wilmington, Delaware
Standard 2025-02-28 ValidFAA registration status code V: Valid registration. All codes
N80486 Cessna
172M
Fixed-wing, single engine Individual owner
South Carolina
Standard 2025-02-28 ValidFAA registration status code V: Valid registration. All codes
N12452 Cessna
172M
Fixed-wing, single engine Cj Aviation LLC
Sonoma, California
Standard 2025-02-27 ValidFAA registration status code V: Valid registration. All codes
N1690T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2025-02-27 ValidFAA registration status code V: Valid registration. All codes
N3293B Piper
PA-18A
Fixed-wing, single engine Co-owned owner
Alaska
Restricted 2025-02-27 ValidFAA registration status code V: Valid registration. All codes
N62486 Cessna
172P
Fixed-wing, single engine 486 Aviation LLC
Worthington, Ohio
Standard 2025-02-27 ValidFAA registration status code V: Valid registration. All codes
N738VV Cessna
172N
Fixed-wing, single engine Pureflight Aviation Training LLC
Newberg, Oregon
Standard 2025-02-27 ValidFAA registration status code V: Valid registration. All codes
N8993V Cessna
172M
Fixed-wing, single engine Bmg Aviation Leasing LLC
Bloomington, Indiana
Standard 2025-02-27 ValidFAA registration status code V: Valid registration. All codes
N9774W Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2025-02-27 ValidFAA registration status code V: Valid registration. All codes
N9917W Piper
PA-28-140
Fixed-wing, single engine Flydunn.Com INC
Jacksonville, Florida
Standard 2025-02-27 ValidFAA registration status code V: Valid registration. All codes
N2247P Piper
PA-23-150
Fixed-wing, multi-engine Co-owned owner
Kentucky
Standard 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N2320W Beech
A23-19
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N3453T Cessna
177
Fixed-wing, single engine Aircraft Evolution LLC
Miami, Florida
Standard 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N4163J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N4302T Piper
PA-28-161
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N55744 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N6034W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N794BK Piper
PA-28-161
Fixed-wing, single engine Maxlines LLC
Fairfax, California
Standard 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N79562 Cessna
172K
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N854CA Piper
PA-28-151
Fixed-wing, single engine Junie the Flying Dog LLC
Atlanta, Georgia
Standard 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N98AW Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Multiple 2025-02-26 ValidFAA registration status code V: Valid registration. All codes
N4601X Cessna
150G
Fixed-wing, single engine Mast Aviation LLC
South Boston, Virginia
Standard 2025-02-25 ValidFAA registration status code V: Valid registration. All codes
N612HP Cessna
172P
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2025-02-25 ValidFAA registration status code V: Valid registration. All codes
N717FL Piper
PA-28-140
Fixed-wing, single engine North Texas Aeronautics LLC
Burleson, Texas
Standard 2025-02-25 ValidFAA registration status code V: Valid registration. All codes
N172PG Cessna
172M
Fixed-wing, single engine Aviation Career Enrichment INC
Atlanta, Georgia
Standard 2025-02-24 ValidFAA registration status code V: Valid registration. All codes
N53996 Cessna
172P
Fixed-wing, single engine Pea-Wayman Flight LLC
Daytona Beach, Florida
Standard 2025-02-24 ValidFAA registration status code V: Valid registration. All codes
N65645 Cessna
172P
Fixed-wing, single engine Pea-Wayman Flight LLC
Daytona Beach, Florida
Standard 2025-02-24 ValidFAA registration status code V: Valid registration. All codes
N739UA Cessna
172N
Fixed-wing, single engine Pea-Wayman Flight LLC
Daytona Beach, Florida
Standard 2025-02-24 ValidFAA registration status code V: Valid registration. All codes
N906WA Cessna
172N
Fixed-wing, single engine Pea-Wayman Flight LLC
Daytona Beach, Florida
Standard 2025-02-24 ValidFAA registration status code V: Valid registration. All codes
N907WA Cessna
172N
Fixed-wing, single engine Pea-Wayman Flight LLC
Daytona Beach, Florida
Standard 2025-02-24 ValidFAA registration status code V: Valid registration. All codes
N92324 Cessna
172M
Fixed-wing, single engine Pea-Wayman Flight LLC
Daytona Beach, Florida
Standard 2025-02-24 ValidFAA registration status code V: Valid registration. All codes
N12529 Cessna
172M
Fixed-wing, single engine Blue Goose Aviation INC
Polson, Montana
Standard 2025-02-22 ValidFAA registration status code V: Valid registration. All codes
N7200G Cessna
172K
Fixed-wing, single engine We Fly High LLC
Helena, Montana
Standard 2025-02-22 ValidFAA registration status code V: Valid registration. All codes
N7547G Cessna
172L
Fixed-wing, single engine Mutter William D
Chelan, Washington
Standard 2025-02-22 ValidFAA registration status code V: Valid registration. All codes
N8320V Champion
7GCAA
Fixed-wing, single engine Individual owner
Oregon
Standard 2025-02-22 ValidFAA registration status code V: Valid registration. All codes
Previous Page 33 of 200 Next

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.