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
N467AT Cessna
177
Fixed-wing, single engine 467At LLC
Frankfort, Illinois
Standard 2023-11-05 ValidFAA registration status code V: Valid registration. All codes
N8643D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-11-05 ValidFAA registration status code V: Valid registration. All codes
N9674D Piper
PA-28-161
Fixed-wing, single engine Space Coast Aircraft CO
Merritt Island, Florida
Standard 2023-11-05 ValidFAA registration status code V: Valid registration. All codes
N97662 Cessna
172P
Fixed-wing, single engine Northwest Alabama Holdings LLC
Spruce Pine, Alabama
Standard 2023-11-05 ValidFAA registration status code V: Valid registration. All codes
N9844S Piper
PA-28-161
Fixed-wing, single engine Space Coast Aircraft CO
Merritt Island, Florida
Standard 2023-11-05 ValidFAA registration status code V: Valid registration. All codes
N12613 Cessna
172M
Fixed-wing, single engine Nashville Flight School LLC
Nashville, Tennessee
Standard 2023-11-04 ValidFAA registration status code V: Valid registration. All codes
N3413K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-11-04 ValidFAA registration status code V: Valid registration. All codes
N35802 Cessna
172I
Fixed-wing, single engine Boeing Employees Flying Association INC
Ridley Park, Pennsylvania
Standard 2023-11-04 ValidFAA registration status code V: Valid registration. All codes
N6086G Cessna
172N
Fixed-wing, single engine Abovestandard LLC
Denison, Texas
Standard 2023-11-04 ValidFAA registration status code V: Valid registration. All codes
N8035D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-04 ValidFAA registration status code V: Valid registration. All codes
N8049D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-11-04 ValidFAA registration status code V: Valid registration. All codes
N8390L Cessna
172I
Fixed-wing, single engine Bliss Marketing Communications INC
Phoenix, Arizona
Standard 2023-11-04 ValidFAA registration status code V: Valid registration. All codes
N98152 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-11-04 ValidFAA registration status code V: Valid registration. All codes
N1597J Piper
PA-28-140
Fixed-wing, single engine Ls Aviation LLC
Searcy, Arkansas
Standard 2023-11-03 ValidFAA registration status code V: Valid registration. All codes
N44530 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-03 ValidFAA registration status code V: Valid registration. All codes
N4460A Piper
PA-22-150
Fixed-wing, single engine Individual owner
West Virginia
Standard 2023-11-03 ValidFAA registration status code V: Valid registration. All codes
N5927W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-03 ValidFAA registration status code V: Valid registration. All codes
N886SA Omf
OMF-100-160
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-11-03 ValidFAA registration status code V: Valid registration. All codes
N9592L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-11-03 ValidFAA registration status code V: Valid registration. All codes
N98135 Piper
PA-28-140
Fixed-wing, single engine Tropical Island Aircraft LLC
Clearwater, Florida
Standard 2023-11-03 ValidFAA registration status code V: Valid registration. All codes
N110BX Cessna
172M
Fixed-wing, single engine Ck Leasing Services LLC
Wilmington, Delaware
Standard 2023-11-02 ValidFAA registration status code V: Valid registration. All codes
N259RD Maurer Roger M
RV-4
Fixed-wing, single engine Individual owner
Iowa
Experimental 2023-11-02 ValidFAA registration status code V: Valid registration. All codes
N4062P Piper
PA-23-160
Fixed-wing, multi-engine Lgop LLC
Maple Grove, Minnesota
Standard 2023-11-02 ValidFAA registration status code V: Valid registration. All codes
N7010B Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2023-11-02 ValidFAA registration status code V: Valid registration. All codes
N78525 Cessna
172K
Fixed-wing, single engine Aero II INC
Spartanburg, South Carolina
Standard 2023-11-02 ValidFAA registration status code V: Valid registration. All codes
N80159 Cessna
172M
Fixed-wing, single engine Iowa Lakes Community College
Estherville, Iowa
Standard 2023-11-02 ValidFAA registration status code V: Valid registration. All codes
N1242U Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N172SS Cessna
172L
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N20095 Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N2380T Piper
PA-28-140
Fixed-wing, single engine
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N33636 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N4397Q Cessna
172L
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N5744U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N6389R Piper
PA-28-140
Fixed-wing, single engine Shockwave Flight LLC
Keedysville, Maryland
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N6880B Piper
PA-18A 150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N7329D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N7669G Cessna
172L
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N812TM Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Connecticut
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N84275 Cessna
172K
Fixed-wing, single engine Individual owner
New York
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N9622Q Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-11-01 ValidFAA registration status code V: Valid registration. All codes
N12442 Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N12657 Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N13715 Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N1590V Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N19650 Cessna
172L
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N20437 Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N2359Q Beech
23
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N2PF Deforrest
MARQUART MA-5
Fixed-wing, single engine Flying Cow Farm LLC
Mount Pleasant, Arkansas
Experimental 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N3601P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N5367H Cessna
172M
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N817AC Piper
PA-28-161
Fixed-wing, single engine Cannon Air Force Base - Aero Club
Clovis, New Mexico
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N8398L Cessna
172I
Fixed-wing, single engine Wingsleasing LLC
Wichita, Kansas
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N8454A Piper
PA-28-161
Fixed-wing, single engine Cannon Air Force Base Aero Club
Clovis, New Mexico
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N9612U Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-31 ValidFAA registration status code V: Valid registration. All codes
N40JK Joseph R Bryant
VANS RV-3
Fixed-wing, single engine Individual owner
Washington
Experimental 2023-10-30 ValidFAA registration status code V: Valid registration. All codes
N5809L American
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-30 ValidFAA registration status code V: Valid registration. All codes
N64383 Cessna
172M
Fixed-wing, single engine Mission Aviation Training Academy
Arlington, Washington
Standard 2023-10-30 ValidFAA registration status code V: Valid registration. All codes
N65742 Cessna
172P
Fixed-wing, single engine Mustang Sally Aviation LLC
Camden, South Carolina
Multiple 2023-10-30 ValidFAA registration status code V: Valid registration. All codes
N738QF Cessna
172N
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-10-30 ValidFAA registration status code V: Valid registration. All codes
N8440H Piper
PA-28-161
Fixed-wing, single engine Individual owner
Iowa
Standard 2023-10-30 ValidFAA registration status code V: Valid registration. All codes
N2315P Piper
PA-22-150
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-10-29 ValidFAA registration status code V: Valid registration. All codes
N446AC American Champion Aircraft
7GCAA
Fixed-wing, single engine
Standard 2023-10-29 ValidFAA registration status code V: Valid registration. All codes
N572FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-10-29 ValidFAA registration status code V: Valid registration. All codes
N65614 Cessna
172P
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2023-10-29 ValidFAA registration status code V: Valid registration. All codes
N7609D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2023-10-29 ValidFAA registration status code V: Valid registration. All codes
N8216S Piper
PA-28-161
Fixed-wing, single engine Nulton Enterprises LLC
Johnstown, Pennsylvania
Standard 2023-10-29 ValidFAA registration status code V: Valid registration. All codes
N88E Cessna
172M
Fixed-wing, single engine Starlite Aviation Technologies LLC
Las Vegas, Nevada
Standard 2023-10-29 ValidFAA registration status code V: Valid registration. All codes
N6097W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Florida
Standard 2023-10-28 ValidFAA registration status code V: Valid registration. All codes
N738CY Cessna
172N
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2023-10-28 ValidFAA registration status code V: Valid registration. All codes
N84604 Cessna
172K
Fixed-wing, single engine Sky Aviation CORP
Staten Island, New York
Standard 2023-10-28 ValidFAA registration status code V: Valid registration. All codes
N9579U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-28 ValidFAA registration status code V: Valid registration. All codes
N11MB Cessna
172N
Fixed-wing, single engine Youngstown Warren Development Partners
Youngstown, Ohio
Standard 2023-10-27 ValidFAA registration status code V: Valid registration. All codes
N1465E Cessna
172N
Fixed-wing, single engine Dandelion Wine LLC
Leesburg, Virginia
Standard 2023-10-27 ValidFAA registration status code V: Valid registration. All codes
N177AS Cessna
177
Fixed-wing, single engine Individual owner
Alabama
Standard 2023-10-27 ValidFAA registration status code V: Valid registration. All codes
N240MK Piper
PA-28-140
Fixed-wing, single engine Fly254 LLC
Waco, Texas
Standard 2023-10-27 ValidFAA registration status code V: Valid registration. All codes
N3393Z Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-10-27 ValidFAA registration status code V: Valid registration. All codes
N3874X Aero Commander
100
Fixed-wing, single engine Tr Flying Service LLC
Milan, Minnesota
Standard 2023-10-27 ValidFAA registration status code V: Valid registration. All codes
N46593 Cessna
172K
Fixed-wing, single engine Grupo Cuaahtemoc LLC
Canutillo, Texas
Standard 2023-10-27 ValidFAA registration status code V: Valid registration. All codes
N5041H Cessna
172M
Fixed-wing, single engine Simplifly LLC
Mesa, Arizona
Standard 2023-10-27 ValidFAA registration status code V: Valid registration. All codes
N7433R Piper
PA-28-140
Fixed-wing, single engine Valiair Lc Trustee
Casper, Wyoming
Standard 2023-10-27 ValidFAA registration status code V: Valid registration. All codes
N78842 Cessna
172K
Fixed-wing, single engine Helice Sarcelle LLC
San Antonio, Texas
Standard 2023-10-27 ValidFAA registration status code V: Valid registration. All codes
N11647 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Multiple 2023-10-26 ValidFAA registration status code V: Valid registration. All codes
N2180E Piper
PA-28-161
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2023-10-26 ValidFAA registration status code V: Valid registration. All codes
N2349Q Beech
23
Fixed-wing, single engine Individual owner
South Carolina
Standard 2023-10-26 ValidFAA registration status code V: Valid registration. All codes
N3231Z Piper
PA-22-150
Fixed-wing, single engine Western Skyways INC
Montrose, Colorado
Standard 2023-10-26 ValidFAA registration status code V: Valid registration. All codes
N4153P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Wyoming
Standard 2023-10-26 ValidFAA registration status code V: Valid registration. All codes
N5490W Piper
PA-28-160
Fixed-wing, single engine Individual owner
California
Standard 2023-10-26 ValidFAA registration status code V: Valid registration. All codes
N6856B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-10-26 ValidFAA registration status code V: Valid registration. All codes
N95265 Piper
PA-28-140
Fixed-wing, single engine Red River Aviation Services LLC
Altus, Oklahoma
Standard 2023-10-26 ValidFAA registration status code V: Valid registration. All codes
N9966D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-10-26 ValidFAA registration status code V: Valid registration. All codes
N3083M Piper
PA-12
Fixed-wing, single engine Weakley Companies LLC
Poland, New York
Multiple 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N3877Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N4336A Piper
PA-22
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N51EX James Jonathan K
GLASTAR
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N6225J Piper
PA-28-151
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N7358G Cessna
172K
Fixed-wing, single engine N7358G INC
Las Vegas, Nevada
Standard 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N75SD Cessna
172M
Fixed-wing, single engine Vimco N75Sd LLC
El Paso, Texas
Standard 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N76LC Cessna
172N
Fixed-wing, single engine Hacienda Hills Skyhawk LLC
Laveen, Arizona
Standard 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N79874 Cessna
172K
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-10-25 ValidFAA registration status code V: Valid registration. All codes
N9648V Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2023-10-25 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.