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
N9407D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2023-08-26 ValidFAA registration status code V: Valid registration. All codes
N9950W Piper
PA-28-140
Fixed-wing, single engine Plane Jane Aviation LLC
Lincoln, Nebraska
Standard 2023-08-26 ValidFAA registration status code V: Valid registration. All codes
N268BH Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N28PG Piper
PA-28-161
Fixed-wing, single engine Lane Community Colleg
Eugene, Oregon
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N41AP Cessna
172N
Fixed-wing, single engine Rising Wings Aviation INC
Casper, Wyoming
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N500LH Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N5244R Cessna
172M
Fixed-wing, single engine Individual owner
Rhode Island
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N6491R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N7483L Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N8251N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N9632H Cessna
172M
Fixed-wing, single engine Sweitz-Air INC
Stewartstown, Pennsylvania
Standard 2023-08-25 ValidFAA registration status code V: Valid registration. All codes
N1345R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Grumman N1345R LLC
Benton Harbor, Michigan
Standard 2023-08-24 ValidFAA registration status code V: Valid registration. All codes
N1458V Cessna
172M
Fixed-wing, single engine Miles Aviation LLC
Thedford, Nebraska
Standard 2023-08-24 ValidFAA registration status code V: Valid registration. All codes
N209JV Messerschmitt-Bolkow-Blohm
BO 209 MONSUN
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-08-24 ValidFAA registration status code V: Valid registration. All codes
N4460X Piper
PA-28-151
Fixed-wing, single engine Stingray LLC
Pensacola, Florida
Standard 2023-08-24 ValidFAA registration status code V: Valid registration. All codes
N456RB Boone Warren
GLASAIR
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-08-24 ValidFAA registration status code V: Valid registration. All codes
N6560Z Piper
PA-25
Fixed-wing, single engine Piper Aviation Museum Foundation
Lock Haven, Pennsylvania
Restricted 2023-08-24 ValidFAA registration status code V: Valid registration. All codes
N737GS Cessna
172N
Fixed-wing, single engine Rising Wings Aviation INC
Casper, Wyoming
Standard 2023-08-24 ValidFAA registration status code V: Valid registration. All codes
N93DS Taylor Vance A
EAA ACRO SPORT
Fixed-wing, single engine Individual owner
Ohio
Experimental 2023-08-24 ValidFAA registration status code V: Valid registration. All codes
N1652G Champion
7GCBC
Fixed-wing, single engine Runway 5 LLC
Wurtsboro, New York
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N1695H Piper
PA-28-140
Fixed-wing, single engine Vista Air INC
Pacoima, California
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N223WD Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N2846A Piper
PA-28-161
Fixed-wing, single engine Up and Up Aviation LLC
Magnolia, Texas
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N3215Z Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N3961M Piper
PA-28-161
Fixed-wing, single engine Bluebird Aviation LLC
Bismarck, North Dakota
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N52272 Cessna
172P
Fixed-wing, single engine Above the Haze LLC
San Lorenzo, California
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N54468 Piper
PA-28-140
Fixed-wing, single engine Legacy Training Group
Oklahoma City, Oklahoma
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N6020D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N6574G Cessna
172N
Fixed-wing, single engine Pplforu LLC
Fort Worth, Texas
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N787ST American Champion Aircraft
7GCAA
Fixed-wing, single engine Citabria N787St LLC
Reno, Nevada
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N8222J Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N84518 Cessna
172K
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N88365 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
South Dakota
Standard 2023-08-23 ValidFAA registration status code V: Valid registration. All codes
N11XX Bellanca
7GCAA
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2023-08-22 ValidFAA registration status code V: Valid registration. All codes
N1420U Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-08-22 ValidFAA registration status code V: Valid registration. All codes
N1733J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-08-22 ValidFAA registration status code V: Valid registration. All codes
N2150Y Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2023-08-22 ValidFAA registration status code V: Valid registration. All codes
N5280M Cessna
172N
Fixed-wing, single engine N5280M LLC
Elizabeth, Colorado
Standard 2023-08-22 ValidFAA registration status code V: Valid registration. All codes
N6950B Piper
PA-22-150
Fixed-wing, single engine Ludwig Henry H
Fort Worth, Texas
Standard 2023-08-22 ValidFAA registration status code V: Valid registration. All codes
N967AA Cessna
172L
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2023-08-22 ValidFAA registration status code V: Valid registration. All codes
N1888A Piper
PA-18-125
Fixed-wing, single engine Alaska Tailwheel LLC
Fairbanks, Alaska
Standard 2023-08-21 ValidFAA registration status code V: Valid registration. All codes
N26976 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2023-08-21 ValidFAA registration status code V: Valid registration. All codes
N334RV Doty Danial J
RV-4
Fixed-wing, single engine Flyrs Field INC
Anchorage, Alaska
Experimental 2023-08-21 ValidFAA registration status code V: Valid registration. All codes
N6154D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-08-21 ValidFAA registration status code V: Valid registration. All codes
N79159 Cessna
172K
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-08-21 ValidFAA registration status code V: Valid registration. All codes
N8461U Piper
PA-28-161
Fixed-wing, single engine Sfb Aviation Services LLC
Edmond, Oklahoma
Standard 2023-08-21 ValidFAA registration status code V: Valid registration. All codes
N9619D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-08-21 ValidFAA registration status code V: Valid registration. All codes
N9800U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-08-21 ValidFAA registration status code V: Valid registration. All codes
N2074A Cessna
172I
Fixed-wing, single engine N2074A Aviation LLC
Sheridan, Wyoming
Standard 2023-08-20 ValidFAA registration status code V: Valid registration. All codes
N5450W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-08-20 ValidFAA registration status code V: Valid registration. All codes
N73MD Beech
A23-19
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-08-20 ValidFAA registration status code V: Valid registration. All codes
N1526V Cessna
172M
Fixed-wing, single engine Rl Aviation LLC
Miami, Florida
Standard 2023-08-19 ValidFAA registration status code V: Valid registration. All codes
N3484M Piper
PA-12
Fixed-wing, single engine Niner One Aviation LLC
Hillsboro, Oregon
Standard 2023-08-19 ValidFAA registration status code V: Valid registration. All codes
N4420R Cessna
172M
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-08-19 ValidFAA registration status code V: Valid registration. All codes
N4717A Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Minnesota
Restricted 2023-08-19 ValidFAA registration status code V: Valid registration. All codes
N7092R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2023-08-19 ValidFAA registration status code V: Valid registration. All codes
N8821E Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alabama
Standard 2023-08-19 ValidFAA registration status code V: Valid registration. All codes
N1611R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Fi Fi Flyers LLC
Littleton, Massachusetts
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N1837J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N20571 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N41949 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N5473W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N7075G Cessna
172K
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N9630W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Louisiana
Standard 2023-08-18 ValidFAA registration status code V: Valid registration. All codes
N4332A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-08-17 ValidFAA registration status code V: Valid registration. All codes
N53890 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-08-17 ValidFAA registration status code V: Valid registration. All codes
N8008N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-08-17 ValidFAA registration status code V: Valid registration. All codes
N1266U Cessna
172M
Fixed-wing, single engine Ralstontc LLC
Trophy Club, Texas
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N169EZ Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N19SJ Piper
PA-22-135
Fixed-wing, single engine Individual owner
Washington
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N3265E Cessna
172N
Fixed-wing, single engine Ta Brand LLC
Middletown, Delaware
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N46423 Cessna
172K
Fixed-wing, single engine Parrish Aviation Flight Academy LLC
Southlake, Texas
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N5054C Bellanca
7GCBC
Fixed-wing, single engine Aero Box Four LLC
Hammond, Louisiana
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N521DH Piper
PA-28-140
Fixed-wing, single engine Penner Ford Aviation LLC
Lebanon, Missouri
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N6075W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N9509D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2023-08-16 ValidFAA registration status code V: Valid registration. All codes
N3001L Fotheringham Delose Grant
LANCAIR 235
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-08-15 ValidFAA registration status code V: Valid registration. All codes
N4216Y Bellanca
7GCAA
Fixed-wing, single engine Tusquittee Flyers Aero Club LLC
Hayesville, North Carolina
Standard 2023-08-15 ValidFAA registration status code V: Valid registration. All codes
N5755D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Maryland
Standard 2023-08-15 ValidFAA registration status code V: Valid registration. All codes
N80088 Cessna
172M
Fixed-wing, single engine Wolgat Alexander
White Lake, Michigan
Standard 2023-08-15 ValidFAA registration status code V: Valid registration. All codes
N8942V Cessna
172M
Fixed-wing, single engine Pilots Flying School LLC
Englishtown, New Jersey
Standard 2023-08-15 ValidFAA registration status code V: Valid registration. All codes
N13732 Cessna
172M
Fixed-wing, single engine Bay Lux Ventures LLC
Tampa, Florida
Standard 2023-08-14 ValidFAA registration status code V: Valid registration. All codes
N1439U Cessna
172M
Fixed-wing, single engine Cass Aviation LLC
Henderson, Nevada
Standard 2023-08-14 ValidFAA registration status code V: Valid registration. All codes
N323WB Cleeves Scott R
BOBCAT
Fixed-wing, single engine Individual owner
Alaska
Experimental 2023-08-14 ValidFAA registration status code V: Valid registration. All codes
N3269M Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Multiple 2023-08-14 ValidFAA registration status code V: Valid registration. All codes
N4803G Cessna
172N
Fixed-wing, single engine Aarow Aircraft Leasing LLC
Mcminnville, Oregon
Standard 2023-08-14 ValidFAA registration status code V: Valid registration. All codes
N5833D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-08-14 ValidFAA registration status code V: Valid registration. All codes
N5876W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2023-08-14 ValidFAA registration status code V: Valid registration. All codes
N82371 Piper
PA-18-150
Fixed-wing, single engine Texas Bar Triangle LLC Plane Series
Mason, Texas
Standard 2023-08-14 ValidFAA registration status code V: Valid registration. All codes
N1258C Piper
PA-18-135
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-08-13 ValidFAA registration status code V: Valid registration. All codes
N4603R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2023-08-13 ValidFAA registration status code V: Valid registration. All codes
N5068L Bellanca
7GCBC
Fixed-wing, single engine Individual owner
West Virginia
Restricted 2023-08-13 ValidFAA registration status code V: Valid registration. All codes
N7199R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2023-08-13 ValidFAA registration status code V: Valid registration. All codes
N80797 Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Restricted 2023-08-13 ValidFAA registration status code V: Valid registration. All codes
N84072 Cessna
172K
Fixed-wing, single engine Co-owned owner
Washington
Standard 2023-08-13 ValidFAA registration status code V: Valid registration. All codes
N8778M Beech
23
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-08-13 ValidFAA registration status code V: Valid registration. All codes
N14226 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Texas
Standard 2023-08-12 ValidFAA registration status code V: Valid registration. All codes
N433FL Piper
PA-28-140
Fixed-wing, single engine True North Aviation LLC
Cooperstown, North Dakota
Standard 2023-08-12 ValidFAA registration status code V: Valid registration. All codes
N7236F Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2023-08-12 ValidFAA registration status code V: Valid registration. All codes
N8779N Piper
PA-28-140
Fixed-wing, single engine North Little Rock Air INC
North Little Rock, Arkansas
Standard 2023-08-12 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 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.