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
N4404J Piper
PA-28-140
Fixed-wing, single engine Fly Like A Girl LLC
Friday Harbor, Washington
Standard 2017-01-12 ValidFAA registration status code V: Valid registration. All codes
N54CS Sanderson C E
STARDUSTER II SA300
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2017-01-12 ValidFAA registration status code V: Valid registration. All codes
N739CZ Cessna
172N
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2017-01-12 ValidFAA registration status code V: Valid registration. All codes
N7775G Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2017-01-12 ValidFAA registration status code V: Valid registration. All codes
N827WT American Champion Aircraft
7GCBC
Fixed-wing, single engine Csu Aviation LLC
Plainfield, Indiana
Standard 2017-01-12 ValidFAA registration status code V: Valid registration. All codes
N8842D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2017-01-12 ValidFAA registration status code V: Valid registration. All codes
N98371 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2017-01-12 ValidFAA registration status code V: Valid registration. All codes
N102LS Smith Louis Elton Jr
RV-4
Fixed-wing, single engine Individual owner
Florida
Experimental 2017-01-11 ValidFAA registration status code V: Valid registration. All codes
N40549 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2017-01-11 ValidFAA registration status code V: Valid registration. All codes
N49RZ Cessna
172N
Fixed-wing, single engine Happy Airplanes LLC
San Antonio, Texas
Standard 2017-01-11 ValidFAA registration status code V: Valid registration. All codes
N6796E Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2017-01-11 ValidFAA registration status code V: Valid registration. All codes
N78341 Cessna
172K
Fixed-wing, single engine Individual owner
California
Standard 2017-01-11 ValidFAA registration status code V: Valid registration. All codes
N841JA Cessna
172I
Fixed-wing, single engine Individual owner
New Jersey
Standard 2017-01-11 ValidFAA registration status code V: Valid registration. All codes
N98167 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2017-01-11 ValidFAA registration status code V: Valid registration. All codes
N15484 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2017-01-10 ValidFAA registration status code V: Valid registration. All codes
N4384J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2017-01-10 ValidFAA registration status code V: Valid registration. All codes
N481DM American Champion Aircraft
7GCBC
Fixed-wing, single engine Edgewood Capital LLC
Joplin, Missouri
Standard 2017-01-10 ValidFAA registration status code V: Valid registration. All codes
N7173B Piper
PA-18A 150
Fixed-wing, single engine Individual owner
California
Standard 2017-01-10 ValidFAA registration status code V: Valid registration. All codes
N1013E Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Montana
Standard 2017-01-09 ValidFAA registration status code V: Valid registration. All codes
N7075R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2017-01-09 ValidFAA registration status code V: Valid registration. All codes
N805JS Beegles
BREEZY EB
Fixed-wing, single engine Individual owner
Ohio
Experimental 2017-01-09 ValidFAA registration status code V: Valid registration. All codes
N95R Oas Harry
PITTS S1C
Fixed-wing, single engine Individual owner
Tennessee
Experimental 2017-01-09 ValidFAA registration status code V: Valid registration. All codes
N966HS Haener Henry F
VANS RV9A
Fixed-wing, single engine Individual owner
Illinois
Experimental 2017-01-09 ValidFAA registration status code V: Valid registration. All codes
N20123 Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2017-01-05 ValidFAA registration status code V: Valid registration. All codes
N26298 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2017-01-05 ValidFAA registration status code V: Valid registration. All codes
N4359X Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2017-01-05 ValidFAA registration status code V: Valid registration. All codes
N5416L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2017-01-05 ValidFAA registration status code V: Valid registration. All codes
N5541M Aero Commander
100
Fixed-wing, single engine District School Board of Pasco County
Land O Lakes, Florida
Standard 2017-01-05 ValidFAA registration status code V: Valid registration. All codes
N7051G Cessna
172K
Fixed-wing, single engine Individual owner
Ohio
Standard 2017-01-05 ValidFAA registration status code V: Valid registration. All codes
N734TW Cessna
172N
Fixed-wing, single engine Fly Zone LLC
Wilmington, Delaware
Standard 2017-01-05 ValidFAA registration status code V: Valid registration. All codes
N9970W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2017-01-05 ValidFAA registration status code V: Valid registration. All codes
N19657 Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2017-01-04 ValidFAA registration status code V: Valid registration. All codes
N29481 Cessna
177
Fixed-wing, single engine Co-owned owner
California
Standard 2017-01-04 ValidFAA registration status code V: Valid registration. All codes
N35629 Cessna
172I
Fixed-wing, single engine N35629 LLC
Brunswick, Georgia
Standard 2017-01-04 ValidFAA registration status code V: Valid registration. All codes
N4066E Piper
PA-18-150
Fixed-wing, single engine Nelson Flyers INC
Louise, Texas
Standard 2017-01-04 ValidFAA registration status code V: Valid registration. All codes
N5386F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alabama
Standard 2017-01-04 ValidFAA registration status code V: Valid registration. All codes
N666TT Burns Gerald A
BII
Fixed-wing, single engine Individual owner
California
Experimental 2017-01-04 ValidFAA registration status code V: Valid registration. All codes
N9460D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
California
Standard 2017-01-04 ValidFAA registration status code V: Valid registration. All codes
N9567D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Montana
Standard 2017-01-04 ValidFAA registration status code V: Valid registration. All codes
N99PG Cessna
172N
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2017-01-04 ValidFAA registration status code V: Valid registration. All codes
N1179M Cessna
172K
Fixed-wing, single engine Co-owned owner
Washington
Standard 2017-01-03 ValidFAA registration status code V: Valid registration. All codes
N3356T Cessna
177
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2017-01-03 ValidFAA registration status code V: Valid registration. All codes
N5767F Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2017-01-03 ValidFAA registration status code V: Valid registration. All codes
N739NN Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2017-01-03 ValidFAA registration status code V: Valid registration. All codes
N75724 Cessna
172N
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2017-01-03 ValidFAA registration status code V: Valid registration. All codes
N791L Piper
PA-28-140
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2017-01-03 ValidFAA registration status code V: Valid registration. All codes
N127VA Schindler M M/Schindler B L
RV9A
Fixed-wing, single engine Individual owner
South Dakota
Experimental 2016-12-30 ValidFAA registration status code V: Valid registration. All codes
N47953 Piper
PA-28-161
Fixed-wing, single engine Mountain Aviation Associates LLC
Midland, Texas
Standard 2016-12-30 ValidFAA registration status code V: Valid registration. All codes
N5114H Piper
PA-14
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-12-30 ValidFAA registration status code V: Valid registration. All codes
N6203W Piper
PA-28-140
Fixed-wing, single engine Coastal Valley Aviation INC
Santa Maria, California
Standard 2016-12-30 ValidFAA registration status code V: Valid registration. All codes
N7044R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
North Dakota
Standard 2016-12-30 ValidFAA registration status code V: Valid registration. All codes
N901TG Cessna
172K
Fixed-wing, single engine Westland Aviation LLC
Lake Havasu City, Arizona
Standard 2016-12-30 ValidFAA registration status code V: Valid registration. All codes
N9280M Cessna
172L
Fixed-wing, single engine Individual owner
Washington
Standard 2016-12-30 ValidFAA registration status code V: Valid registration. All codes
N20233 Cessna
172M
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2016-12-29 ValidFAA registration status code V: Valid registration. All codes
N264SA Piper
PA-28-140
Fixed-wing, single engine Sundance Airport LLC
Yukon, Oklahoma
Standard 2016-12-28 ValidFAA registration status code V: Valid registration. All codes
N35441 Cessna
172I
Fixed-wing, single engine Individual owner
Colorado
Standard 2016-12-28 ValidFAA registration status code V: Valid registration. All codes
N6109W Piper
PA-28-140
Fixed-wing, single engine City of Westfield
Westfield, Massachusetts
Standard 2016-12-28 ValidFAA registration status code V: Valid registration. All codes
N6928W Piper
PA-28-140
Fixed-wing, single engine Hammons Daniel G
Vadnais Heights, Minnesota
Standard 2016-12-28 ValidFAA registration status code V: Valid registration. All codes
N79054 Cessna
172K
Fixed-wing, single engine N18228 INC
Williamsburg, Virginia
Standard 2016-12-28 ValidFAA registration status code V: Valid registration. All codes
N8293E Cessna
172N
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2016-12-28 ValidFAA registration status code V: Valid registration. All codes
N262SA Piper
PA-28-150
Fixed-wing, single engine Sundance Airport LLC
Yukon, Oklahoma
Standard 2016-12-27 ValidFAA registration status code V: Valid registration. All codes
N29220 Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2016-12-27 ValidFAA registration status code V: Valid registration. All codes
N98208 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2016-12-27 ValidFAA registration status code V: Valid registration. All codes
N13447 Cessna
172M
Fixed-wing, single engine Individual owner
Virginia
Standard 2016-12-23 ValidFAA registration status code V: Valid registration. All codes
N300PS Cessna
172K
Fixed-wing, single engine Right Coast Ventures LLC
Royse City, Texas
Standard 2016-12-23 ValidFAA registration status code V: Valid registration. All codes
N5092E Cessna
172N
Fixed-wing, single engine Individual owner
Connecticut
Standard 2016-12-23 ValidFAA registration status code V: Valid registration. All codes
N6629W Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2016-12-23 ValidFAA registration status code V: Valid registration. All codes
N13YP Cessna
172I
Fixed-wing, single engine Individual owner
Arizona
Standard 2016-12-22 ValidFAA registration status code V: Valid registration. All codes
N3144Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Washington
Standard 2016-12-22 ValidFAA registration status code V: Valid registration. All codes
N3315T Cessna
177
Fixed-wing, single engine Individual owner
Texas
Standard 2016-12-22 ValidFAA registration status code V: Valid registration. All codes
N16446 Piper
PA-28-140
Fixed-wing, single engine Cash Management Consulting LLC
Granite Springs, New York
Standard 2016-12-21 ValidFAA registration status code V: Valid registration. All codes
N20JD Piper
PA-28
Fixed-wing, single engine Individual owner
Arizona
Standard 2016-12-21 ValidFAA registration status code V: Valid registration. All codes
N57RV Hancock Seth E
RV-6
Fixed-wing, single engine Individual owner
Florida
Experimental 2016-12-21 ValidFAA registration status code V: Valid registration. All codes
N65191 Cessna
172P
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2016-12-21 ValidFAA registration status code V: Valid registration. All codes
N84887 Wade
RV4
Fixed-wing, single engine Individual owner
California
Experimental 2016-12-21 ValidFAA registration status code V: Valid registration. All codes
N9896Y Champion
7GCB
Fixed-wing, single engine Frisby James A
Palmer, Alaska
Standard 2016-12-21 ValidFAA registration status code V: Valid registration. All codes
N9141R Parks Richard A
RV 4
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Experimental 2016-12-20 ValidFAA registration status code V: Valid registration. All codes
N479AC American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
Ohio
Standard 2016-12-19 ValidFAA registration status code V: Valid registration. All codes
N6049Z Piper
PA-25
Fixed-wing, single engine Individual owner
Montana
Restricted 2016-12-19 ValidFAA registration status code V: Valid registration. All codes
N6950D Piper
PA-22-150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2016-12-19 ValidFAA registration status code V: Valid registration. All codes
N733ZZ Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2016-12-19 ValidFAA registration status code V: Valid registration. All codes
N762SS Piper
PA-28-161
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2016-12-19 ValidFAA registration status code V: Valid registration. All codes
N8601D Piper
PA-22-160
Fixed-wing, single engine Individual owner
North Dakota
Standard 2016-12-19 ValidFAA registration status code V: Valid registration. All codes
N12387 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2016-12-16 ValidFAA registration status code V: Valid registration. All codes
N2109B Luscombe
8F
Fixed-wing, single engine Schilling Aviation LLC
Britton, Michigan
Standard 2016-12-15 ValidFAA registration status code V: Valid registration. All codes
N79014 Cessna
172K
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2016-12-15 ValidFAA registration status code V: Valid registration. All codes
N8996Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Multiple 2016-12-15 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N172W Cessna
172L
Fixed-wing, single engine Individual owner
Alaska
Standard 2016-12-14 ValidFAA registration status code V: Valid registration. All codes
N330FT Piper
PA-28-161
Fixed-wing, single engine Suwannee Arrow LLC
Clearwater, Florida
Standard 2016-12-14 ValidFAA registration status code V: Valid registration. All codes
N32542 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Nebraska
Standard 2016-12-13 ValidFAA registration status code V: Valid registration. All codes
N47525 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2016-12-13 ValidFAA registration status code V: Valid registration. All codes
N2DA Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2016-12-12 ValidFAA registration status code V: Valid registration. All codes
N3729M Piper
PA-12
Fixed-wing, single engine Individual owner
Idaho
Standard 2016-12-12 ValidFAA registration status code V: Valid registration. All codes
N6183W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2016-12-12 ValidFAA registration status code V: Valid registration. All codes
N7343D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2016-12-12 ValidFAA registration status code V: Valid registration. All codes
N734DN Cessna
172N
Fixed-wing, single engine Seven 4 Zulu LLC
San Diego, California
Standard 2016-12-12 ValidFAA registration status code V: Valid registration. All codes
N7936G Cessna
172L
Fixed-wing, single engine Individual owner
Kentucky
Standard 2016-12-12 ValidFAA registration status code V: Valid registration. All codes
N8862N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2016-12-12 ValidFAA registration status code V: Valid registration. All codes
N9490H Cessna
172M
Fixed-wing, single engine Individual owner
Minnesota
Standard 2016-12-12 ValidFAA registration status code V: Valid registration. All codes
N5125G Cessna
172I
Fixed-wing, single engine Individual owner
Florida
Standard 2016-12-09 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.