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
N3967U Utterback Harry L
ACCIPITER 200
Fixed-wing, single engine Individual owner
Texas
Experimental 2021-02-11 ValidFAA registration status code V: Valid registration. All codes
N4037E Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2021-02-11 ValidFAA registration status code V: Valid registration. All codes
N420LP Prichard Lynn
RV4
Fixed-wing, single engine Individual owner
Colorado
Experimental 2021-02-11 ValidFAA registration status code V: Valid registration. All codes
N9038K Piper
PA-28-161
Fixed-wing, single engine Northwest Aviation LLC
Gig Harbor, Washington
Standard 2021-02-11 ValidFAA registration status code V: Valid registration. All codes
N9401H Cessna
172M
Fixed-wing, single engine Individual owner
Connecticut
Standard 2021-02-11 ValidFAA registration status code V: Valid registration. All codes
N220MF Omf
OMF-100-160
Fixed-wing, single engine Montana Motor Cars LLC
Kalispell, Montana
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N2346Q Beech
23
Fixed-wing, single engine Individual owner
Oregon
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N32500 Piper
PA-28-140
Fixed-wing, single engine Fairfield Flying Service INC
Fairfield, Iowa
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N65716 Cessna
172P
Fixed-wing, single engine Rtd Aviation LLC
Hillsborough, New Jersey
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N6712J Piper
PA-28-140
Fixed-wing, single engine F & F Flying Service INC
Springfield, Virginia
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N738ZT Cessna
172N
Fixed-wing, single engine Sp Airparts LLC
Moscow, Idaho
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N79012 Cessna
172K
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-02-10 ValidFAA registration status code V: Valid registration. All codes
N1233U Cessna
172M
Fixed-wing, single engine Magnum Air LLC
Camp Hill, Pennsylvania
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N128EP Cessna
172P
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N2862X Cessna
177
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N382JN Cessna
172M
Fixed-wing, single engine Silver Sky Air LLC
Fresno, California
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N444LM Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Vermont
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N46378 Cessna
172K
Fixed-wing, single engine Northwoods Air LLC
Levant, Maine
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N56280 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N5853L American
AA-5
Fixed-wing, single engine Individual owner
California
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N5893L American
AA-5
Fixed-wing, single engine Individual owner
Mississippi
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N6373R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N738ZG Cessna
172N
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N9131D Piper
PA-18A
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N91925 Cessna
172M
Fixed-wing, single engine Rl Aviation LLC
Miami, Florida
Standard 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N97JE Ely John M
VANS ACFT RV-6
Fixed-wing, single engine Co-owned owner
Mississippi
Experimental 2021-02-09 ValidFAA registration status code V: Valid registration. All codes
N20HT Cessna
172K
Fixed-wing, single engine Red Arrow Aviation LLC
Santa Teresa, New Mexico
Standard 2021-02-08 ValidFAA registration status code V: Valid registration. All codes
N216MS Avions Pierre Robin
PIERRE ROBIN R2160
Fixed-wing, single engine General Aviation Consulting LLC
Long Beach, California
Standard 2021-02-08 ValidFAA registration status code V: Valid registration. All codes
N2322P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-02-08 ValidFAA registration status code V: Valid registration. All codes
N3980K Piper
PA-28-140
Fixed-wing, single engine Stephen Reinhart Air LLC
Depew, New York
Standard 2021-02-08 ValidFAA registration status code V: Valid registration. All codes
N7535R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-02-08 ValidFAA registration status code V: Valid registration. All codes
N8387J Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-02-08 ValidFAA registration status code V: Valid registration. All codes
N905KS Cessna
172P
Fixed-wing, single engine Individual owner
Florida
Standard 2021-02-08 ValidFAA registration status code V: Valid registration. All codes
N3409M Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-02-06 ValidFAA registration status code V: Valid registration. All codes
N629MB Belleau Thomas Roy
SA-300
Fixed-wing, single engine Individual owner
Alaska
Experimental 2021-02-06 ValidFAA registration status code V: Valid registration. All codes
N14332 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2021-02-05 ValidFAA registration status code V: Valid registration. All codes
N4426A Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2021-02-05 ValidFAA registration status code V: Valid registration. All codes
N7249J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2021-02-05 ValidFAA registration status code V: Valid registration. All codes
N8982R Champion
AERONCA 7GCB
Fixed-wing, single engine Individual owner
Minnesota
Standard 2021-02-05 ValidFAA registration status code V: Valid registration. All codes
N8999D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-02-05 ValidFAA registration status code V: Valid registration. All codes
N9873U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Cheetah Flyers LLC
Huntersville, North Carolina
Standard 2021-02-05 ValidFAA registration status code V: Valid registration. All codes
N1100U Cessna
172P
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N1371U Cessna
172M
Fixed-wing, single engine Stanton Sport Aviation
Stanton, Minnesota
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N151DS Piper
PA-28-151
Fixed-wing, single engine Individual owner
Texas
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N186SK Krueger Kenneth L
VANS AIRCFT RV-6
Fixed-wing, single engine Individual owner
Washington
Experimental 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N2954Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Oregon
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N419SF Cessna
172M
Fixed-wing, single engine Total Flight Aircraft Leasing LLC
Apex, North Carolina
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N51213 Cessna
172M
Fixed-wing, single engine Individual owner
Kentucky
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N52KB Bell Lyle Gene
MA-5
Fixed-wing, single engine Individual owner
New York
Experimental 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N55392 Piper
PA-28-140
Fixed-wing, single engine Fast Aircraft Aerowork CORP
Fort Lauderdale, Florida
Standard 2021-02-04 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N5948E Cessna
172N
Fixed-wing, single engine Tlt Legacy LLC
Fort Worth, Texas
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N6135W Piper
PA-28-140
Fixed-wing, single engine Whiskey Aviation LLC
Huntsville, Alabama
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N79904 Cessna
172K
Fixed-wing, single engine Skyhawk904 LLC
Ventura, California
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N98244 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2021-02-04 ValidFAA registration status code V: Valid registration. All codes
N13644 Cessna
172M
Fixed-wing, single engine Kelley Aircraft LLC
Weyers Cave, Virginia
Standard 2021-02-03 ValidFAA registration status code V: Valid registration. All codes
N216TS Cessna
172I
Fixed-wing, single engine S&S Aircraft INC
Bennington, Vermont
Standard 2021-02-03 ValidFAA registration status code V: Valid registration. All codes
N6558W Piper
PA-28-140
Fixed-wing, single engine Shirley Hills Aviation LLC
Macon, Georgia
Standard 2021-02-03 ValidFAA registration status code V: Valid registration. All codes
N6854W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Florida
Standard 2021-02-03 ValidFAA registration status code V: Valid registration. All codes
N7721B Liolios Jim
SH-2R
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2021-02-03 ValidFAA registration status code V: Valid registration. All codes
N83665 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Kentucky
Standard 2021-02-03 ValidFAA registration status code V: Valid registration. All codes
N22755 Harrison Peter G
RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2021-02-02 ValidFAA registration status code V: Valid registration. All codes
N2356J Beech
23
Fixed-wing, single engine N2356J LLC
Winchester, Virginia
Standard 2021-02-02 ValidFAA registration status code V: Valid registration. All codes
N5050N Bellanca
7GCBC
Fixed-wing, single engine
Standard 2021-02-02 ValidFAA registration status code V: Valid registration. All codes
N7205G Cessna
172K
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-02-02 ValidFAA registration status code V: Valid registration. All codes
N733JS Cessna
172N
Fixed-wing, single engine School of Missionary Aviation Technology
Ionia, Michigan
Standard 2021-02-02 ValidFAA registration status code V: Valid registration. All codes
N737TC Cessna
172N
Fixed-wing, single engine Flyboys Nevada LLC
Henderson, Nevada
Standard 2021-02-02 ValidFAA registration status code V: Valid registration. All codes
N96180 Cessna
172P
Fixed-wing, single engine Jb Aviation
Bolingbrook, Illinois
Standard 2021-02-02 ValidFAA registration status code V: Valid registration. All codes
N16EK Cessna
172M
Fixed-wing, single engine Centerline Holdings LLC
Belgrade, Montana
Standard 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N172YA Cessna
172P
Fixed-wing, single engine Cf Images LLC
Fairfield, New Jersey
Standard 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N20496 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N2875G Piper
PA-28-161
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N5406W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Indiana
Standard 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N6514J Cessna
172N
Fixed-wing, single engine Juggernautaviation LLC
Lewes, Delaware
Standard 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N734QV Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N75269 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N7861W Piper
PA-28-180
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N800MD Cessna
172N
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N822WY Mccreery Alvin L
RV-6
Fixed-wing, single engine Individual owner
Washington
Experimental 2021-02-01 ValidFAA registration status code V: Valid registration. All codes
N82962 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2021-01-30 ValidFAA registration status code V: Valid registration. All codes
N18AL Chivers
THORP T-18
Fixed-wing, single engine Sandpoint Aviation LLC
Sandpoint, Idaho
Experimental 2021-01-29 ValidFAA registration status code V: Valid registration. All codes
N44538 Piper
PA-28-151
Fixed-wing, single engine Berkshire Aviation Enterprises LLC
Great Barrington, Massachusetts
Standard 2021-01-29 ValidFAA registration status code V: Valid registration. All codes
N5230W Piper
PA-28
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2021-01-28 ValidFAA registration status code V: Valid registration. All codes
N5543U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2021-01-28 ValidFAA registration status code V: Valid registration. All codes
N12488 Cessna
172M
Fixed-wing, single engine Individual owner
Arkansas
Standard 2021-01-27 ValidFAA registration status code V: Valid registration. All codes
N14W Ward Peter
RV-3
Fixed-wing, single engine Individual owner
Kansas
Experimental 2021-01-27 ValidFAA registration status code V: Valid registration. All codes
N39DU Southern Aero Sports Inc
VANS RV-6
Fixed-wing, single engine Individual owner
California
Experimental 2021-01-27 ValidFAA registration status code V: Valid registration. All codes
N42PB Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2021-01-27 ValidFAA registration status code V: Valid registration. All codes
N4386L Anderson John William
RV-4
Fixed-wing, single engine Individual owner
California
Experimental 2021-01-27 ValidFAA registration status code V: Valid registration. All codes
N6592L Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-01-27 ValidFAA registration status code V: Valid registration. All codes
N8151N Piper
PA-28-140
Fixed-wing, single engine Smitty 172 LLC
Rockford, Michigan
Standard 2021-01-27 ValidFAA registration status code V: Valid registration. All codes
N9614H Cessna
172M
Fixed-wing, single engine C&H Elite Air LLC
Johnstown, Colorado
Standard 2021-01-27 ValidFAA registration status code V: Valid registration. All codes
N1800T Piper
PA-28-140
Fixed-wing, single engine Mission Aviators LLC
Spring, Texas
Standard 2021-01-26 ValidFAA registration status code V: Valid registration. All codes
N46118 Cessna
172I
Fixed-wing, single engine Epiphany Software CO
Wilmington, North Carolina
Standard 2021-01-26 ValidFAA registration status code V: Valid registration. All codes
N5077V Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
Wyoming
Experimental 2021-01-26 ValidFAA registration status code V: Valid registration. All codes
N73846 Cessna
172N
Fixed-wing, single engine Individual owner
South Carolina
Standard 2021-01-26 ValidFAA registration status code V: Valid registration. All codes
N79941 Cessna
172K
Fixed-wing, single engine Individual owner
Missouri
Standard 2021-01-26 ValidFAA registration status code V: Valid registration. All codes
N8322V Champion
7GCAA
Fixed-wing, single engine 11 Point Aviation LLC
Alton, Missouri
Standard 2021-01-26 ValidFAA registration status code V: Valid registration. All codes
N19AV Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2021-01-25 ValidFAA registration status code V: Valid registration. All codes
N26684 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-01-25 ValidFAA registration status code V: Valid registration. All codes
N2819Q Cessna
172L
Fixed-wing, single engine Airborne LLC
Wilmington, Delaware
Standard 2021-01-25 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.