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
N4482J Piper
PA-28-140
Fixed-wing, single engine Webe Properties LLC
Toledo, Ohio
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N58294 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Virginia
Restricted 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N66CD American Champion Aircraft
7GCBC
Fixed-wing, single engine Kcsi Aerial Patrol INC
Bakersfield, California
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N737TZ Cessna
172N
Fixed-wing, single engine Co-owned owner
Idaho
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N7604F Cessna
172N
Fixed-wing, single engine Kcsi Aerial Patrol INC
Bakersfield, California
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N79917 Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2024-04-04 ValidFAA registration status code V: Valid registration. All codes
N177VA Cessna
177
Fixed-wing, single engine Aerial Specialties INC
Decatur, Texas
Standard 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N19819 Cessna
172M
Fixed-wing, single engine Northwoods Air LLC
Orono, Maine
Standard 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N4157H Piper
PA-18-150
Fixed-wing, single engine Dhf LLC
Valentine, Nebraska
Standard 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N4703A Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Montana
Multiple 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N4715J Cessna
172N
Fixed-wing, single engine Individual owner
New York
Standard 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N5200H Cessna
172M
Fixed-wing, single engine Iowa Lakes Community College
Estherville, Iowa
Standard 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N80535 Cessna
172M
Fixed-wing, single engine Aerial Specailties INC
Decatur, Texas
Standard 2024-04-03 ValidFAA registration status code V: Valid registration. All codes
N172WT Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N3095Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N3637Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Florida
Standard 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N5502W Piper
PA-28-160
Fixed-wing, single engine West Kentucky Wings and Toons LLC
Benton, Kentucky
Standard 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N62SM Cessna
172M
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N9425H Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N9637Q Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2024-04-02 ValidFAA registration status code V: Valid registration. All codes
N3126E Cessna
172N
Fixed-wing, single engine N3126E LLC
Columbus, Ohio
Standard 2024-04-01 ValidFAA registration status code V: Valid registration. All codes
N6942Y Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
California
Standard 2024-04-01 ValidFAA registration status code V: Valid registration. All codes
N729FL Piper
PA-28-140
Fixed-wing, single engine Flight Adventures LLP
Pleasant Grove, Utah
Standard 2024-04-01 ValidFAA registration status code V: Valid registration. All codes
N737XU Cessna
172N
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-04-01 ValidFAA registration status code V: Valid registration. All codes
N8005D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2024-04-01 ValidFAA registration status code V: Valid registration. All codes
N185NS Lafayette Foundation Inc
F1 CAMEL
Fixed-wing, single engine Lafayette Foundation INC
Fort Lupton, Colorado
Experimental 2024-03-31 ValidFAA registration status code V: Valid registration. All codes
N20600 Cessna
172M
Fixed-wing, single engine Occupational Health Services
Green Bay, Wisconsin
Standard 2024-03-31 ValidFAA registration status code V: Valid registration. All codes
N7524D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2024-03-31 ValidFAA registration status code V: Valid registration. All codes
N12215 Cessna
172M
Fixed-wing, single engine Cm3 LLC
North Las Vegas, Nevada
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N19804 Cessna
172M
Fixed-wing, single engine Cm3 LLC
North Las Vegas, Nevada
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N2338Y Robinson Helicopter
R22 BETA
Helicopter Cm3 LLC
North Las Vegas, Nevada
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N2716Z Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N32588 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N35815 Cessna
172I
Fixed-wing, single engine Cm3 LLC
North Las Vegas, Nevada
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N493FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N6877W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N737UL Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N8245N Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Florida
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N84186 Cessna
172K
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N84662 Cessna
172K
Fixed-wing, single engine Caverns Consulting LLC
Purcellville, Virginia
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N9659H Cessna
172M
Fixed-wing, single engine Jd Griffin LLC
Wilmington, Delaware
Standard 2024-03-30 ValidFAA registration status code V: Valid registration. All codes
N195MR Emmanuel N Vargas
RV-6A
Fixed-wing, single engine Individual owner
California
Experimental 2024-03-29 ValidFAA registration status code V: Valid registration. All codes
N78808 Cessna
172K
Fixed-wing, single engine Co-owned owner
Maryland
Standard 2024-03-29 ValidFAA registration status code V: Valid registration. All codes
N3595Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Multiple 2024-03-28 ValidFAA registration status code V: Valid registration. All codes
N41522 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-03-28 ValidFAA registration status code V: Valid registration. All codes
N4593F Piper
PA-28-151
Fixed-wing, single engine Sterling Flight Training LLC
Jacksonville, Florida
Standard 2024-03-28 ValidFAA registration status code V: Valid registration. All codes
N4639R Piper
PA-28-140
Fixed-wing, single engine Sterling Flight Training LLC
Jacksonville, Florida
Standard 2024-03-28 ValidFAA registration status code V: Valid registration. All codes
N9998D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wyoming
Standard 2024-03-28 ValidFAA registration status code V: Valid registration. All codes
N19881 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-27 ValidFAA registration status code V: Valid registration. All codes
N25PL Piper
PA-28-140
Fixed-wing, single engine Waterboy Aviation LLC
Richlandtown, Pennsylvania
Standard 2024-03-27 ValidFAA registration status code V: Valid registration. All codes
N3074S Cessna
150G
Fixed-wing, single engine Tail Aero CORP
Wilmington, Delaware
Standard 2024-03-27 ValidFAA registration status code V: Valid registration. All codes
N4080Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
California
Standard 2024-03-27 ValidFAA registration status code V: Valid registration. All codes
N5147R Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-27 ValidFAA registration status code V: Valid registration. All codes
N7071Q Cessna
172L
Fixed-wing, single engine Sun Country Aero Club
The Villages, Florida
Standard 2024-03-27 ValidFAA registration status code V: Valid registration. All codes
N7586R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-27 ValidFAA registration status code V: Valid registration. All codes
N8260N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Montana
Standard 2024-03-27 ValidFAA registration status code V: Valid registration. All codes
N7355G Cessna
172K
Fixed-wing, single engine Aerolanding LLC
Enterprise, Alabama
Standard 2024-03-26 ValidFAA registration status code V: Valid registration. All codes
N9668C Piper
PA-28-161
Fixed-wing, single engine Brandywine Flight School INC
West Chester, Pennsylvania
Standard 2024-03-26 ValidFAA registration status code V: Valid registration. All codes
N12189 Cessna
172M
Fixed-wing, single engine Ozark Aviation LLC
Fayetteville, Arkansas
Standard 2024-03-25 ValidFAA registration status code V: Valid registration. All codes
N5378W Piper
PA-28-160
Fixed-wing, single engine Hargis Bookman LLC
Justin, Texas
Standard 2024-03-25 ValidFAA registration status code V: Valid registration. All codes
N64095 Cessna
172M
Fixed-wing, single engine Righthand 2004 LLC
Charlotte, North Carolina
Standard 2024-03-25 ValidFAA registration status code V: Valid registration. All codes
N739YM Cessna
172N
Fixed-wing, single engine Heritage Aviation LLC
Ankeny, Iowa
Standard 2024-03-25 ValidFAA registration status code V: Valid registration. All codes
N2885Q Cessna
172L
Fixed-wing, single engine Fisher Global LLC
Conway, Arkansas
Standard 2024-03-24 ValidFAA registration status code V: Valid registration. All codes
N33640 Piper
PA-28-151
Fixed-wing, single engine Red Rooster Rentals LLC
Alto, Georgia
Standard 2024-03-24 ValidFAA registration status code V: Valid registration. All codes
N7190R Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2024-03-24 ValidFAA registration status code V: Valid registration. All codes
N8051N Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Jersey
Standard 2024-03-24 ValidFAA registration status code V: Valid registration. All codes
N8486C Piper
PA-28-140
Fixed-wing, single engine Down To Fly! LLC
Ocean Springs, Mississippi
Standard 2024-03-24 ValidFAA registration status code V: Valid registration. All codes
N3364T Cessna
177
Fixed-wing, single engine High Mesa Aviation LLC
Naturita, Colorado
Standard 2024-03-23 ValidFAA registration status code V: Valid registration. All codes
N702G Cessna
172I
Fixed-wing, single engine Tsiouklas Aviation INC
Dunedin, Florida
Standard 2024-03-22 ValidFAA registration status code V: Valid registration. All codes
N12716 Cessna
172M
Fixed-wing, single engine Individual owner
Montana
Standard 2024-03-21 ValidFAA registration status code V: Valid registration. All codes
N33079 Piper
PA-28-140
Fixed-wing, single engine Devaney Aviation INC
Palm City, Florida
Standard 2024-03-21 ValidFAA registration status code V: Valid registration. All codes
N53730 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-21 ValidFAA registration status code V: Valid registration. All codes
N882F Gulfstream American Corp
AA-5A
Fixed-wing, single engine Drb Helicopters LLC
Klamath Falls, Oregon
Standard 2024-03-21 ValidFAA registration status code V: Valid registration. All codes
N4263J Piper
PA-28-140
Fixed-wing, single engine Bmf Wings LLC
Corinth, Mississippi
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N43MP Peck Melvin H
VANS RV-4
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N4756J Beech
A23-19
Fixed-wing, single engine Individual owner
Washington
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N555ZH Cessna
172N
Fixed-wing, single engine Individual owner
New York
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N5815U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N63DG Gehle D C / Gehle P D
VANS RV-4
Fixed-wing, single engine Individual owner
Washington
Experimental 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N733CS Cessna
172N
Fixed-wing, single engine Fly Aviation CORP
Wilmington, Delaware
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N8013D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Maryland
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N92014 Cessna
172M
Fixed-wing, single engine Shotwell Land Management CO LLC
Jackson, Mississippi
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N9975W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-03-20 ValidFAA registration status code V: Valid registration. All codes
N120ZZ Piper
PA-18-150
Fixed-wing, single engine Cumulus Holdings LLC
Wilmington, Delaware
Standard 2024-03-19 ValidFAA registration status code V: Valid registration. All codes
N234PA Piper
PA-28-161
Fixed-wing, single engine Juliet Two LLC
Ocean Ridge, Florida
Standard 2024-03-19 ValidFAA registration status code V: Valid registration. All codes
N30617 Cessna
172M
Fixed-wing, single engine Executive Flight Training & Services LLC
Sanford, North Carolina
Standard 2024-03-19 ValidFAA registration status code V: Valid registration. All codes
N4396T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-03-19 ValidFAA registration status code V: Valid registration. All codes
N64255 Cessna
172M
Fixed-wing, single engine Gulf Coast Helicopters INC
Pearland, Texas
Standard 2024-03-19 ValidFAA registration status code V: Valid registration. All codes
N9555C Piper
PA-28-161
Fixed-wing, single engine Vimana LLC
Chandler, Arizona
Standard 2024-03-19 ValidFAA registration status code V: Valid registration. All codes
N33673 Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2024-03-18 ValidFAA registration status code V: Valid registration. All codes
N7506R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2024-03-18 ValidFAA registration status code V: Valid registration. All codes
N9623V Cessna
172M
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-03-18 ValidFAA registration status code V: Valid registration. All codes
N46256 Cessna
172I
Fixed-wing, single engine Hartford Air LLC
Gahanna, Ohio
Standard 2024-03-17 ValidFAA registration status code V: Valid registration. All codes
N7597R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2024-03-17 ValidFAA registration status code V: Valid registration. All codes
N1683J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2024-03-16 ValidFAA registration status code V: Valid registration. All codes
N4300T Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2024-03-16 ValidFAA registration status code V: Valid registration. All codes
N46100 Cessna
172I
Fixed-wing, single engine Aerflow INC
Jersey City, New Jersey
Standard 2024-03-16 ValidFAA registration status code V: Valid registration. All codes
N499TG Piper
PA-28-140
Fixed-wing, single engine Crest Aviation LLC
Broomfield, Colorado
Standard 2024-03-16 ValidFAA registration status code V: Valid registration. All codes
N7861D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-03-16 ValidFAA registration status code V: Valid registration. All codes
N9594S Champion
7GCAA
Fixed-wing, single engine Co-owned owner
Florida
Standard 2024-03-16 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.