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
N10GH Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2020-08-19 ValidFAA registration status code V: Valid registration. All codes
N11115 Cessna
172M
Fixed-wing, single engine Individual owner
Nevada
Standard 2020-08-19 ValidFAA registration status code V: Valid registration. All codes
N173YA Cessna
172P
Fixed-wing, single engine Individual owner
Arkansas
Standard 2020-08-19 ValidFAA registration status code V: Valid registration. All codes
N62RW Labelle
SKYBOLT
Fixed-wing, single engine Individual owner
Ohio
Experimental 2020-08-19 ValidFAA registration status code V: Valid registration. All codes
N6909B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Iowa
Standard 2020-08-19 ValidFAA registration status code V: Valid registration. All codes
N692S Sherman Albert
HATZ CB-1
Fixed-wing, single engine Individual owner
Washington
Experimental 2020-08-19 ValidFAA registration status code V: Valid registration. All codes
N7253G Cessna
172K
Fixed-wing, single engine One Mile LLC
Canton, Georgia
Standard 2020-08-19 ValidFAA registration status code V: Valid registration. All codes
N73464 Cessna
172M
Fixed-wing, single engine Individual owner
Indiana
Standard 2020-08-19 ValidFAA registration status code V: Valid registration. All codes
N134SF Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N1731J Piper
PA-28-140
Fixed-wing, single engine Riverside Exteriors INC
Post Falls, Idaho
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N2345Z Cessna
172N
Fixed-wing, single engine
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N44500 Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N51865 Cessna
172P
Fixed-wing, single engine Co-owned owner
California
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N61748 Cessna
172M
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N7099Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N7860W Piper
PA-28-180
Fixed-wing, single engine Red Rock Flying School LLC
Mesa, Arizona
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N8089E Cessna
172N
Fixed-wing, single engine Skywarrior Flight Training INC
Pensacola, Florida
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N8488L Cessna
172I
Fixed-wing, single engine Harrier Aviation LLC
South Saint Paul, Minnesota
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N91256 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N9615D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2020-08-18 ValidFAA registration status code V: Valid registration. All codes
N102TC Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-08-17 ValidFAA registration status code V: Valid registration. All codes
N20033 Cessna
172M
Fixed-wing, single engine Coddiwomple LLC
Newberg, Oregon
Standard 2020-08-17 ValidFAA registration status code V: Valid registration. All codes
N32805 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kentucky
Standard 2020-08-17 ValidFAA registration status code V: Valid registration. All codes
N32QX Dyer Larry A
LANCAIR 320
Fixed-wing, single engine Spacewalker 2 LLC
Ocala, Florida
Experimental 2020-08-17 ValidFAA registration status code V: Valid registration. All codes
N9265D Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2020-08-17 ValidFAA registration status code V: Valid registration. All codes
N3989Q Cessna
172L
Fixed-wing, single engine Dms Leasing CO LLC
Las Vegas, Nevada
Standard 2020-08-15 ValidFAA registration status code V: Valid registration. All codes
N523DP Ahrens David Lee
RV-6A
Fixed-wing, single engine Withheld at owner's request
Experimental 2020-08-15 ValidFAA registration status code V: Valid registration. All codes
N5696W Piper
PA-28
Fixed-wing, single engine Individual owner
Virginia
Standard 2020-08-15 ValidFAA registration status code V: Valid registration. All codes
N694AR Piper
PA-12
Fixed-wing, single engine Individual owner
Oregon
Standard 2020-08-15 ValidFAA registration status code V: Valid registration. All codes
N737YT Cessna
172M
Fixed-wing, single engine 80075 Aircraft Corporation LLC
Wilmington, Delaware
Standard 2020-08-15 ValidFAA registration status code V: Valid registration. All codes
N9309K Piper
PA-28-151
Fixed-wing, single engine Individual owner
New Mexico
Standard 2020-08-15 ValidFAA registration status code V: Valid registration. All codes
N1476X Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2020-08-14 ValidFAA registration status code V: Valid registration. All codes
N3127Z Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2020-08-14 ValidFAA registration status code V: Valid registration. All codes
N5106R Beech
B19
Fixed-wing, single engine Individual owner
Texas
Standard 2020-08-14 ValidFAA registration status code V: Valid registration. All codes
N5409L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2020-08-14 ValidFAA registration status code V: Valid registration. All codes
N73837 Cessna
172N
Fixed-wing, single engine Bloomex Aviation LLC
Montvale, New Jersey
Standard 2020-08-14 ValidFAA registration status code V: Valid registration. All codes
N20AL Harrington Albert A
MUSTANG M II
Fixed-wing, single engine Individual owner
New Jersey
Experimental 2020-08-13 ValidFAA registration status code V: Valid registration. All codes
N26794 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Seveca Ventures LLC
Arcola, Texas
Standard 2020-08-13 ValidFAA registration status code V: Valid registration. All codes
N46534 Cessna
172K
Fixed-wing, single engine Individual owner
South Carolina
Standard 2020-08-13 ValidFAA registration status code V: Valid registration. All codes
N37MF Freeman Marshall W
SPORT TRAINER
Fixed-wing, single engine Individual owner
Idaho
Experimental 2020-08-12 ValidFAA registration status code V: Valid registration. All codes
N5597F Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2020-08-12 ValidFAA registration status code V: Valid registration. All codes
N705SR Ryan A Newell
NEWELL HATZ CB-1
Fixed-wing, single engine Co-owned owner
Ohio
Experimental 2020-08-12 ValidFAA registration status code V: Valid registration. All codes
N9556W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2020-08-12 ValidFAA registration status code V: Valid registration. All codes
N126TW Cessna
172M
Fixed-wing, single engine Aerial Advertising Services
San Jose, California
Standard 2020-08-11 ValidFAA registration status code V: Valid registration. All codes
N172WS Cessna
172M
Fixed-wing, single engine Woodstock Air LLC
Cincinnati, Ohio
Standard 2020-08-11 ValidFAA registration status code V: Valid registration. All codes
N20305 Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-08-11 ValidFAA registration status code V: Valid registration. All codes
N2169D Quirk Kevin M
RV6A
Fixed-wing, single engine Individual owner
Florida
Experimental 2020-08-11 ValidFAA registration status code V: Valid registration. All codes
N4601G Cessna
172N
Fixed-wing, single engine Resicum International LLC
Gulf Shores, Alabama
Standard 2020-08-11 ValidFAA registration status code V: Valid registration. All codes
N64174 Cessna
172M
Fixed-wing, single engine Sen Air INC
Mckeesport, Pennsylvania
Standard 2020-08-11 ValidFAA registration status code V: Valid registration. All codes
N8514Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
California
Standard 2020-08-11 ValidFAA registration status code V: Valid registration. All codes
N9617W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2020-08-11 ValidFAA registration status code V: Valid registration. All codes
N15808 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2020-08-10 ValidFAA registration status code V: Valid registration. All codes
N24KK Cessna
172M
Fixed-wing, single engine Flying High Again LLC
Mt Juliet, Tennessee
Standard 2020-08-10 ValidFAA registration status code V: Valid registration. All codes
N2850P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Iowa
Standard 2020-08-10 ValidFAA registration status code V: Valid registration. All codes
N5269W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2020-08-10 ValidFAA registration status code V: Valid registration. All codes
N734ZC Cessna
172N
Fixed-wing, single engine Georges Aviation Services INC
Honolulu, Hawaii
Standard 2020-08-10 ValidFAA registration status code V: Valid registration. All codes
N206MC Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2020-08-08 ValidFAA registration status code V: Valid registration. All codes
N802UM Piper
PA-28-140
Fixed-wing, single engine Lawrence Dayle A
Scotia, California
Standard 2020-08-08 ValidFAA registration status code V: Valid registration. All codes
N5860L American
AA-5
Fixed-wing, single engine Individual owner
Ohio
Standard 2020-08-07 ValidFAA registration status code V: Valid registration. All codes
N18956 Beech
B19
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2020-08-06 ValidFAA registration status code V: Valid registration. All codes
N5254D Cessna
172N
Fixed-wing, single engine R&R Aero Services LLC
Eden Prairie, Minnesota
Standard 2020-08-06 ValidFAA registration status code V: Valid registration. All codes
N6133H Bellanca
7GCBC
Fixed-wing, single engine Cbc Aviation LLC
Hayden, Idaho
Standard 2020-08-06 ValidFAA registration status code V: Valid registration. All codes
N91PG Piper
PA-28-140
Fixed-wing, single engine Tri Angle 7
Bonham, Texas
Standard 2020-08-06 ValidFAA registration status code V: Valid registration. All codes
N9554V Cessna
172M
Fixed-wing, single engine Cavu LLC
Fort Collins, Colorado
Standard 2020-08-06 ValidFAA registration status code V: Valid registration. All codes
N1462X Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2020-08-05 ValidFAA registration status code V: Valid registration. All codes
N284ND Davis Donald M
BUSHBY MUSTANG II
Fixed-wing, single engine Co-owned owner
Alaska
Experimental 2020-08-05 ValidFAA registration status code V: Valid registration. All codes
N3478K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-08-05 ValidFAA registration status code V: Valid registration. All codes
N4281Q Cessna
172L
Fixed-wing, single engine Mcdonald Air Services LLC
Saint Johns, Michigan
Standard 2020-08-05 ValidFAA registration status code V: Valid registration. All codes
N57BM Cessna
172M
Fixed-wing, single engine Huerta Holdings INC
Santa Ana, California
Standard 2020-08-05 ValidFAA registration status code V: Valid registration. All codes
N8334Z Piper
PA-28-161
Fixed-wing, single engine Ufly Vi LLC
St Thomas, U.S. Virgin Islands
Standard 2020-08-05 ValidFAA registration status code V: Valid registration. All codes
N172AR Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2020-08-04 ValidFAA registration status code V: Valid registration. All codes
N26985 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
New Jersey
Standard 2020-08-04 ValidFAA registration status code V: Valid registration. All codes
N3BN Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Montana
Standard 2020-08-04 ValidFAA registration status code V: Valid registration. All codes
N478P Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2020-08-04 ValidFAA registration status code V: Valid registration. All codes
N5504K Bellanca
7GCBC
Fixed-wing, single engine Individual owner
New Jersey
Standard 2020-08-04 ValidFAA registration status code V: Valid registration. All codes
N6467R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-08-04 ValidFAA registration status code V: Valid registration. All codes
N718FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2020-08-04 ValidFAA registration status code V: Valid registration. All codes
N739RY Cessna
172N
Fixed-wing, single engine American Aircraft Sales CO
Livermore, California
Standard 2020-08-04 ValidFAA registration status code V: Valid registration. All codes
N9106Y Piper
PA-28-161
Fixed-wing, single engine Region Flyers LLC
Valparaiso, Indiana
Standard 2020-08-04 ValidFAA registration status code V: Valid registration. All codes
N92006 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2020-08-04 ValidFAA registration status code V: Valid registration. All codes
N32990 Piper
PA-28-151
Fixed-wing, single engine Trident Aircraft Leasing LLC
Easton, Maryland
Standard 2020-08-03 ValidFAA registration status code V: Valid registration. All codes
N7116Q Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2020-08-03 ValidFAA registration status code V: Valid registration. All codes
N8075W Piper
PA-28-180
Fixed-wing, single engine Pale Horse Imports INC
Shingletown, California
Standard 2020-08-03 ValidFAA registration status code V: Valid registration. All codes
N12176 Cessna
172M
Fixed-wing, single engine Cardinal Wings Aviation LLC
Buckner, Kentucky
Standard 2020-08-01 ValidFAA registration status code V: Valid registration. All codes
N15132 Piper
PA-28-140
Fixed-wing, single engine Lewis University
Romeoville, Illinois
Standard 2020-08-01 ValidFAA registration status code V: Valid registration. All codes
N222MJ Piper
PA-12
Fixed-wing, single engine Honore Breen Aviation LLC
Allegan, Michigan
Standard 2020-08-01 ValidFAA registration status code V: Valid registration. All codes
N2953T Aero Commander
100
Fixed-wing, single engine Zavalney Carl G
Pollocksville, North Carolina
Standard 2020-08-01 ValidFAA registration status code V: Valid registration. All codes
N32WT Robinson Helicopter
R22 BETA
Helicopter Individual owner
California
Standard 2020-08-01 ValidFAA registration status code V: Valid registration. All codes
N3967Q Cessna
172L
Fixed-wing, single engine Individual owner
Minnesota
Standard 2020-08-01 ValidFAA registration status code V: Valid registration. All codes
N61544 Cessna
172M
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2020-08-01 ValidFAA registration status code V: Valid registration. All codes
N8223N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-08-01 ValidFAA registration status code V: Valid registration. All codes
N9096H Cessna
172M
Fixed-wing, single engine Individual owner
Idaho
Standard 2020-08-01 ValidFAA registration status code V: Valid registration. All codes
N119FR Cessna
172P
Fixed-wing, single engine Jeffery & Weiss Holdings LLC
Long Beach, California
Standard 2020-07-31 ValidFAA registration status code V: Valid registration. All codes
N2961W Piper
PA-28-161
Fixed-wing, single engine Krauss Solutions LLC
Debary, Florida
Standard 2020-07-31 ValidFAA registration status code V: Valid registration. All codes
N46030 Cessna
172I
Fixed-wing, single engine Constance Air LLC
Luthersville, Georgia
Standard 2020-07-31 ValidFAA registration status code V: Valid registration. All codes
N8391Q Piper
PA-28-161
Fixed-wing, single engine Individual owner
Tennessee
Standard 2020-07-31 ValidFAA registration status code V: Valid registration. All codes
N151M Mccallum Michael G
COZY 3
Fixed-wing, single engine Individual owner
Massachusetts
Experimental 2020-07-30 ValidFAA registration status code V: Valid registration. All codes
N33542 Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2020-07-30 ValidFAA registration status code V: Valid registration. All codes
N4160P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Missouri
Standard 2020-07-30 ValidFAA registration status code V: Valid registration. All codes
N44872 Piper
PA-28-161
Fixed-wing, single engine Allmond Aviation LLC
Peoria, Illinois
Standard 2020-07-30 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.