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
N8694D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Maryland
Standard 2015-06-24 ValidFAA registration status code V: Valid registration. All codes
N115SG American Champion Aircraft
7GCBC
Fixed-wing, single engine Aileron Aviation LLC
Knoxville, Tennessee
Standard 2015-06-23 ValidFAA registration status code V: Valid registration. All codes
N530WB Cessna
172M
Fixed-wing, single engine Dmb Aircraft INC
Wilmington, Delaware
Standard 2015-06-23 ValidFAA registration status code V: Valid registration. All codes
N894AL Lancaster Arthur E
RV-4
Fixed-wing, single engine Individual owner
Florida
Experimental 2015-06-23 ValidFAA registration status code V: Valid registration. All codes
N4961G Cessna
172N
Fixed-wing, single engine Individual owner
Utah
Standard 2015-06-22 ValidFAA registration status code V: Valid registration. All codes
N737ZK Cessna
172N
Fixed-wing, single engine Ak Fly INC
Kasilof, Alaska
Standard 2015-06-22 ValidFAA registration status code V: Valid registration. All codes
N5917W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Michigan
Standard 2015-06-19 ValidFAA registration status code V: Valid registration. All codes
N1716P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2015-06-18 ValidFAA registration status code V: Valid registration. All codes
N3394T Cessna
177
Fixed-wing, single engine Individual owner
Michigan
Standard 2015-06-18 ValidFAA registration status code V: Valid registration. All codes
N36768 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Kansas
Standard 2015-06-18 ValidFAA registration status code V: Valid registration. All codes
N3883X Aero Commander
100
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2015-06-18 ValidFAA registration status code V: Valid registration. All codes
N4309Q Cessna
172L
Fixed-wing, single engine Individual owner
Louisiana
Standard 2015-06-18 ValidFAA registration status code V: Valid registration. All codes
N5148H Cessna
172M
Fixed-wing, single engine Malad Aviation LLC
Bliss, Idaho
Standard 2015-06-18 ValidFAA registration status code V: Valid registration. All codes
N7643D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Virginia
Standard 2015-06-18 ValidFAA registration status code V: Valid registration. All codes
N88BE Eskesen Byron H
LONG EZ
Fixed-wing, single engine Individual owner
Texas
Experimental 2015-06-18 ValidFAA registration status code V: Valid registration. All codes
N85HM Marvin Howard
LONG-EZE
Fixed-wing, single engine Individual owner
California
Experimental 2015-06-17 ValidFAA registration status code V: Valid registration. All codes
N96GW White Gerald R
RV-3
Fixed-wing, single engine Individual owner
Illinois
Experimental 2015-06-17 ValidFAA registration status code V: Valid registration. All codes
N2386T Piper
PA-28-140
Fixed-wing, single engine Hub City Aviation Academy LLC
Lubbock, Texas
Standard 2015-06-16 ValidFAA registration status code V: Valid registration. All codes
N27176 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Alabama
Standard 2015-06-16 ValidFAA registration status code V: Valid registration. All codes
N8000M Piper
PA-22-150
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2015-06-16 ValidFAA registration status code V: Valid registration. All codes
N9092H Cessna
172M
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2015-06-16 ValidFAA registration status code V: Valid registration. All codes
N33459 Piper
PA-28-151
Fixed-wing, single engine A-Z Leasing LLC
Kenosha, Wisconsin
Standard 2015-06-15 ValidFAA registration status code V: Valid registration. All codes
N4587A Piper
PA-18A 150
Fixed-wing, single engine Chasing Alaska CORP
Anchorage, Alaska
Restricted 2015-06-15 ValidFAA registration status code V: Valid registration. All codes
N6295D Cessna
172N
Fixed-wing, single engine Candace A Larned Enterprises INC
Long Beach, California
Standard 2015-06-15 ValidFAA registration status code V: Valid registration. All codes
N7160D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Montana
Standard 2015-06-15 ValidFAA registration status code V: Valid registration. All codes
N7163R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2015-06-15 ValidFAA registration status code V: Valid registration. All codes
N78785 Cessna
172K
Fixed-wing, single engine Individual owner
Montana
Standard 2015-06-12 ValidFAA registration status code V: Valid registration. All codes
N8733V Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Florida
Standard 2015-06-12 ValidFAA registration status code V: Valid registration. All codes
N13156 Cessna
172M
Fixed-wing, single engine Mph Aviation LLC
Eastanollee, Georgia
Standard 2015-06-11 ValidFAA registration status code V: Valid registration. All codes
N176DB Bell
EAA ACROSPORT-I
Fixed-wing, single engine Individual owner
Michigan
Experimental 2015-06-11 ValidFAA registration status code V: Valid registration. All codes
N4158W Piper
PA-18-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2015-06-11 ValidFAA registration status code V: Valid registration. All codes
N4922D Cessna
172N
Fixed-wing, single engine D Gordon Aviation INC
La Jolla, California
Standard 2015-06-11 ValidFAA registration status code V: Valid registration. All codes
N75709 Cessna
172N
Fixed-wing, single engine Individual owner
North Carolina
Standard 2015-06-10 ValidFAA registration status code V: Valid registration. All codes
N35401 Cessna
172I
Fixed-wing, single engine American Aviation Training LLC
Fort Scott, Kansas
Standard 2015-06-09 ValidFAA registration status code V: Valid registration. All codes
N5400W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Idaho
Standard 2015-06-09 ValidFAA registration status code V: Valid registration. All codes
N7563R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Missouri
Standard 2015-06-09 ValidFAA registration status code V: Valid registration. All codes
N9242D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2015-06-09 ValidFAA registration status code V: Valid registration. All codes
N1378M Cessna
172L
Fixed-wing, single engine Cavok LLC
La Vergne, Tennessee
Standard 2015-06-08 ValidFAA registration status code V: Valid registration. All codes
N500GD Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2015-06-08 ValidFAA registration status code V: Valid registration. All codes
N5033R Cessna
172M
Fixed-wing, single engine Eastern Cincinnati Aviation INC
Batavia, Ohio
Standard 2015-06-08 ValidFAA registration status code V: Valid registration. All codes
N80118 Cessna
172M
Fixed-wing, single engine Skylens LLC
Hammond, Louisiana
Standard 2015-06-08 ValidFAA registration status code V: Valid registration. All codes
N80764 Cessna
172M
Fixed-wing, single engine Individual owner
Kansas
Standard 2015-06-08 ValidFAA registration status code V: Valid registration. All codes
N20057 Cessna
172M
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2015-06-05 ValidFAA registration status code V: Valid registration. All codes
N513DN Nowakowski Donald K
RV-6
Fixed-wing, single engine Co-owned owner
South Carolina
Experimental 2015-06-05 ValidFAA registration status code V: Valid registration. All codes
N73420 Cessna
172M
Fixed-wing, single engine Globemaster Services LLC
Saint Jacob, Illinois
Standard 2015-06-05 ValidFAA registration status code V: Valid registration. All codes
N82057 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2015-06-04 ValidFAA registration status code V: Valid registration. All codes
N8357V Champion
7GCAA
Fixed-wing, single engine Individual owner
California
Standard 2015-06-04 ValidFAA registration status code V: Valid registration. All codes
N8590Y Piper
PA-30
Fixed-wing, multi-engine Northern Aviation LLC
Palmer, Alaska
Special flight permit 2015-06-04 ValidFAA registration status code V: Valid registration. All codes
N89811 Cessna
172P
Fixed-wing, single engine Sky Warrior Flight Training INC
Pensacola, Florida
Standard 2015-06-04 ValidFAA registration status code V: Valid registration. All codes
N977MA Piper
PA-28-161
Fixed-wing, single engine Individual owner
Ohio
Standard 2015-06-04 ValidFAA registration status code V: Valid registration. All codes
N9940W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2015-06-04 ValidFAA registration status code V: Valid registration. All codes
N2161E Cessna
172N
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2015-06-03 ValidFAA registration status code V: Valid registration. All codes
N95151 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2015-06-03 ValidFAA registration status code V: Valid registration. All codes
N9691D Piper
PA-18-150
Fixed-wing, single engine Smith Daryl W
Winifred, Montana
Standard 2015-06-03 ValidFAA registration status code V: Valid registration. All codes
N1997E Cessna
172N
Fixed-wing, single engine Olsen Grain & Livestock INC
Whitewater, Montana
Standard 2015-06-02 ValidFAA registration status code V: Valid registration. All codes
N6148W Piper
PA-28-140
Fixed-wing, single engine Air Ventures Flying School LLC
Smithfield, Rhode Island
Standard 2015-06-02 ValidFAA registration status code V: Valid registration. All codes
N64377 Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2015-06-01 ValidFAA registration status code V: Valid registration. All codes
N64541 Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2015-06-01 ValidFAA registration status code V: Valid registration. All codes
N20218 Cessna
172M
Fixed-wing, single engine Emporia Flying Club INC
Emporia, Kansas
Standard 2015-05-29 ValidFAA registration status code V: Valid registration. All codes
N86883 Bellanca
7GCBC
Fixed-wing, single engine High Exposure INC
Wilmington, Delaware
Standard 2015-05-28 ValidFAA registration status code V: Valid registration. All codes
N202BZ Piper
PA-18-150
Fixed-wing, single engine Individual owner
Oregon
Standard 2015-05-27 ValidFAA registration status code V: Valid registration. All codes
N4640J Cessna
172N
Fixed-wing, single engine 4 Flyers INC
Norwood, New York
Standard 2015-05-27 ValidFAA registration status code V: Valid registration. All codes
N8296E Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2015-05-27 ValidFAA registration status code V: Valid registration. All codes
N8396R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2015-05-27 ValidFAA registration status code V: Valid registration. All codes
N1294F Cessna
172N
Fixed-wing, single engine Clover Park Technical College
Lakewood, Washington
Standard 2015-05-26 ValidFAA registration status code V: Valid registration. All codes
N13692 Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2015-05-26 ValidFAA registration status code V: Valid registration. All codes
N3986Q Cessna
172L
Fixed-wing, single engine Mfv-N5498Q Owners Association INC
New Church, Virginia
Standard 2015-05-26 ValidFAA registration status code V: Valid registration. All codes
N4389F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2015-05-26 ValidFAA registration status code V: Valid registration. All codes
N739BN Cessna
172N
Fixed-wing, single engine R&R Aero Services LLC
Eden Prairie, Minnesota
Standard 2015-05-26 ValidFAA registration status code V: Valid registration. All codes
N8062U Robinson Helicopter
R22 BETA
Helicopter Cullman Rotocraft INC
Vinemont, Alabama
Standard 2015-05-26 ValidFAA registration status code V: Valid registration. All codes
N2886T Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2015-05-21 ValidFAA registration status code V: Valid registration. All codes
N3940K Piper
PA-28-140
Fixed-wing, single engine Air Ventures Flying School LLC
Smithfield, Rhode Island
Standard 2015-05-21 ValidFAA registration status code V: Valid registration. All codes
N762PJ James Talcott
WANNA BEE
Fixed-wing, single engine Individual owner
Alaska
Experimental 2015-05-21 ValidFAA registration status code V: Valid registration. All codes
N222RV Martens S / Martens E
RV-4
Fixed-wing, single engine Individual owner
Nebraska
Experimental 2015-05-20 ValidFAA registration status code V: Valid registration. All codes
N5512V Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2015-05-20 ValidFAA registration status code V: Valid registration. All codes
N729J American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
North Dakota
Standard 2015-05-20 ValidFAA registration status code V: Valid registration. All codes
N2911G Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2015-05-19 ValidFAA registration status code V: Valid registration. All codes
N3079M Piper
PA-28-161
Fixed-wing, single engine Eagle Flight Academy LLC
Owensboro, Kentucky
Standard 2015-05-18 ValidFAA registration status code V: Valid registration. All codes
N51594 Cessna
172P
Fixed-wing, single engine Candace A Larned Enterprises INC
Long Beach, California
Standard 2015-05-18 ValidFAA registration status code V: Valid registration. All codes
N9053U Robinson Helicopter
R22 BETA
Helicopter Individual owner
Texas
Standard 2015-05-18 ValidFAA registration status code V: Valid registration. All codes
N9792W Piper
PA-28-140
Fixed-wing, single engine Towner Flying Club
Pelican Rapids, Minnesota
Standard 2015-05-18 ValidFAA registration status code V: Valid registration. All codes
N4352A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2015-05-14 ValidFAA registration status code V: Valid registration. All codes
N3031W Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2015-05-12 ValidFAA registration status code V: Valid registration. All codes
N453KB Robinson Helicopter
R22 BETA
Helicopter Individual owner
Arkansas
Standard 2015-05-12 ValidFAA registration status code V: Valid registration. All codes
N54148 Cessna
172P
Fixed-wing, single engine Individual owner
Georgia
Standard 2015-05-12 ValidFAA registration status code V: Valid registration. All codes
N7384E Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2015-05-12 ValidFAA registration status code V: Valid registration. All codes
N7992G Cessna
172L
Fixed-wing, single engine Individual owner
Kentucky
Multiple 2015-05-12 ValidFAA registration status code V: Valid registration. All codes
N33000 Sindlinger
HAWKER HURRICANE
Fixed-wing, single engine Individual owner
Washington
Experimental 2015-05-08 ValidFAA registration status code V: Valid registration. All codes
N12951 Cessna
172M
Fixed-wing, single engine Co-owned owner
Montana
Standard 2015-05-07 ValidFAA registration status code V: Valid registration. All codes
N2102E Cessna
172N
Fixed-wing, single engine Individual owner
North Carolina
Standard 2015-05-07 ValidFAA registration status code V: Valid registration. All codes
N41880 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2015-05-07 ValidFAA registration status code V: Valid registration. All codes
N46385 Cessna
172K
Fixed-wing, single engine R A Marsh Flying Club LLC
Williamson, Georgia
Standard 2015-05-07 ValidFAA registration status code V: Valid registration. All codes
N8214N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2015-05-07 ValidFAA registration status code V: Valid registration. All codes
N30012 Piper
PA-28-161
Fixed-wing, single engine Wfc Aviation INC
Johnstown, Pennsylvania
Standard 2015-05-06 ValidFAA registration status code V: Valid registration. All codes
N3989F Piper
PA-28-151
Fixed-wing, single engine Wfc Aviation INC
Johnstown, Pennsylvania
Standard 2015-05-06 ValidFAA registration status code V: Valid registration. All codes
N3143W Loyd Gerald Wayne
RV-4
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2015-05-05 ValidFAA registration status code V: Valid registration. All codes
N13602 Cessna
172M
Fixed-wing, single engine Individual owner
Illinois
Standard 2015-05-04 ValidFAA registration status code V: Valid registration. All codes
N4017Z Piper
PA-18-150
Fixed-wing, single engine B4B CO
Ridgeview, South Dakota
Restricted 2015-05-04 ValidFAA registration status code V: Valid registration. All codes
N84808 Cessna
172K
Fixed-wing, single engine Johnson Don W
Sage, Arkansas
Standard 2015-05-04 ValidFAA registration status code V: Valid registration. All codes
N35813 Cessna
172I
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2015-04-30 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.