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
N80972 Valentine James L
VANS 6A
Fixed-wing, single engine Co-owned owner
Minnesota
Experimental 2022-01-15 ValidFAA registration status code V: Valid registration. All codes
N8508D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Washington
Standard 2022-01-15 ValidFAA registration status code V: Valid registration. All codes
N15637 Piper
PA-28-140
Fixed-wing, single engine Winningham Ronald L
Fairbanks, Alaska
Standard 2022-01-13 ValidFAA registration status code V: Valid registration. All codes
N21893 Cessna
172M
Fixed-wing, single engine Western Territory Flyers LLC
Fairfax, California
Standard 2022-01-13 ValidFAA registration status code V: Valid registration. All codes
N2869Z Piper
PA-22-150
Fixed-wing, single engine Rolling Rock Equipment LLC
Mount Pleasant, Pennsylvania
Standard 2022-01-13 ValidFAA registration status code V: Valid registration. All codes
N482AS Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2022-01-13 ValidFAA registration status code V: Valid registration. All codes
N5117W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Texas
Standard 2022-01-13 ValidFAA registration status code V: Valid registration. All codes
N7EL Luke Ervin G
RV-6
Fixed-wing, single engine Rvbird LLC
Seattle, Washington
Experimental 2022-01-13 ValidFAA registration status code V: Valid registration. All codes
N96628 Cessna
172P
Fixed-wing, single engine Bobby Nelson Aviation LLC
Kettering, Ohio
Standard 2022-01-13 ValidFAA registration status code V: Valid registration. All codes
N12197 Cessna
172M
Fixed-wing, single engine K Airmotive LLC
Saint Helens, Oregon
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N1528J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N19GB Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N20420 Cessna
172M
Fixed-wing, single engine N83993 LLC
Cherry Hill, New Jersey
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N2584S Piper
PA-18-150
Fixed-wing, single engine Individual owner
South Dakota
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N2730E Cessna
172N
Fixed-wing, single engine Oew Aviation LLC
Sumter, South Carolina
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N28MW Waldrop Morris M
RV-4
Fixed-wing, single engine Individual owner
California
Experimental 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N31400 Piper
PA-28-161
Fixed-wing, single engine Druidia Group LLC
Downingtown, Pennsylvania
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N3678P Piper
PA-18A
Fixed-wing, single engine Friemel & Sons LLC
Groom, Texas
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N5255W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Illinois
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N56521 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N6295W Piper
PA-28-140
Fixed-wing, single engine J Delgado Aviation LLC
Tulsa, Oklahoma
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N6570H Cessna
172M
Fixed-wing, single engine Britten Air LLC
Natchitoches, Louisiana
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N86HF Nelson Gene R
RV-3M
Fixed-wing, single engine Individual owner
Texas
Experimental 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N9087D Piper
PA-28-161
Fixed-wing, single engine Bolden Family Farms
Little Rock, Arkansas
Standard 2022-01-12 ValidFAA registration status code V: Valid registration. All codes
N6486J Cessna
172N
Fixed-wing, single engine Individual owner
Idaho
Standard 2022-01-11 ValidFAA registration status code V: Valid registration. All codes
N82946 Piper
PA-18-150
Fixed-wing, single engine Class A Coaches LLC
Missoula, Montana
Standard 2022-01-11 ValidFAA registration status code V: Valid registration. All codes
N1372U Cessna
172M
Fixed-wing, single engine Co-owned owner
West Virginia
Standard 2022-01-10 ValidFAA registration status code V: Valid registration. All codes
N44107 Piper
PA-28-151
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-01-10 ValidFAA registration status code V: Valid registration. All codes
N46715 Cessna
172K
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2022-01-10 ValidFAA registration status code V: Valid registration. All codes
N6766B Piper
PA-18A
Fixed-wing, single engine Individual owner
Alabama
Multiple 2022-01-10 ValidFAA registration status code V: Valid registration. All codes
N909T Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2022-01-10 ValidFAA registration status code V: Valid registration. All codes
N11BP Pitts
S-1C
Fixed-wing, single engine Individual owner
Florida
Experimental 2022-01-08 ValidFAA registration status code V: Valid registration. All codes
N1937P Piper
PA-22-150
Fixed-wing, single engine Pro West Air LLC
West Point, Utah
Standard 2022-01-08 ValidFAA registration status code V: Valid registration. All codes
N200FA Fuji
FA-200-160
Fixed-wing, single engine Individual owner
California
Standard 2022-01-08 ValidFAA registration status code V: Valid registration. All codes
N400L Cessna
177
Fixed-wing, single engine Co-owned owner
Iowa
Standard 2022-01-08 ValidFAA registration status code V: Valid registration. All codes
N6184J Piper
PA-28-151
Fixed-wing, single engine Inverted Holdings LLC
Newnan, Georgia
Standard 2022-01-08 ValidFAA registration status code V: Valid registration. All codes
N6387R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2022-01-08 ValidFAA registration status code V: Valid registration. All codes
N8494L Cessna
172I
Fixed-wing, single engine Co-owned owner
California
Standard 2022-01-08 ValidFAA registration status code V: Valid registration. All codes
N9549L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2022-01-08 ValidFAA registration status code V: Valid registration. All codes
N6940B Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2022-01-07 ValidFAA registration status code V: Valid registration. All codes
N82169 Piper
PA-18-150
Fixed-wing, single engine Individual owner
New York
Standard 2022-01-07 ValidFAA registration status code V: Valid registration. All codes
N8822D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2022-01-07 ValidFAA registration status code V: Valid registration. All codes
N2971M Piper
PA-12
Fixed-wing, single engine Foothill Aviation LLC
Iliamna, Alaska
Standard 2022-01-06 ValidFAA registration status code V: Valid registration. All codes
N4458Z Piper
PA-18-150
Fixed-wing, single engine Aerial Crop Care CO
Hebron, North Dakota
Standard 2022-01-06 ValidFAA registration status code V: Valid registration. All codes
N47918 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Tennessee
Standard 2022-01-06 ValidFAA registration status code V: Valid registration. All codes
N516DD Piper
PA-18-150
Fixed-wing, single engine Individual owner
New Hampshire
Multiple 2022-01-06 ValidFAA registration status code V: Valid registration. All codes
N221DM Cessna
172L
Fixed-wing, single engine Rush Aviation LLC
Melrose, New Mexico
Standard 2022-01-05 ValidFAA registration status code V: Valid registration. All codes
N3151Z Piper
PA-22-160
Fixed-wing, single engine Old Crow Flyers LLC
Mooresville, North Carolina
Standard 2022-01-05 ValidFAA registration status code V: Valid registration. All codes
N733RU Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2022-01-05 ValidFAA registration status code V: Valid registration. All codes
N296SD Sidney S Haynie
VANS RV 7-A
Fixed-wing, single engine Individual owner
Arizona
Experimental 2022-01-04 ValidFAA registration status code V: Valid registration. All codes
N36233 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Montana
Standard 2022-01-04 ValidFAA registration status code V: Valid registration. All codes
N69AP Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2022-01-04 ValidFAA registration status code V: Valid registration. All codes
N7135R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2022-01-04 ValidFAA registration status code V: Valid registration. All codes
N9143V Piper
PA-18-150
Fixed-wing, single engine Crazy Mountain Cub LLC
Helena, Montana
Standard 2022-01-04 ValidFAA registration status code V: Valid registration. All codes
N12721 Cessna
172M
Fixed-wing, single engine Pray Aviation INC
Augusta, Kansas
Standard 2022-01-03 ValidFAA registration status code V: Valid registration. All codes
N1808P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2022-01-03 ValidFAA registration status code V: Valid registration. All codes
N1CX Fasching John W
RV-6A
Fixed-wing, single engine Pacific Ocean Consulting LLC
Fort Worth, Texas
Experimental 2022-01-03 ValidFAA registration status code V: Valid registration. All codes
N7416C Christopher Palm
FTW
Fixed-wing, single engine N7416C LLC
Anchorage, Alaska
Experimental 2022-01-03 ValidFAA registration status code V: Valid registration. All codes
N4468J Piper
PA-28-140
Fixed-wing, single engine Central Arkansas Flying Club INC
Bryant, Arkansas
Standard 2021-12-30 ValidFAA registration status code V: Valid registration. All codes
N5737U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2021-12-30 ValidFAA registration status code V: Valid registration. All codes
N65ES Anderas Per R
REBEL
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2021-12-30 ValidFAA registration status code V: Valid registration. All codes
N92544 Piper
PA-12
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-12-29 ValidFAA registration status code V: Valid registration. All codes
N93WK Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Washington
Standard 2021-12-29 ValidFAA registration status code V: Valid registration. All codes
N35406 Cessna
172I
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-12-28 ValidFAA registration status code V: Valid registration. All codes
N1963F Beech
23
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2021-12-27 ValidFAA registration status code V: Valid registration. All codes
N4119J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2021-12-27 ValidFAA registration status code V: Valid registration. All codes
N7126R Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2021-12-27 ValidFAA registration status code V: Valid registration. All codes
N73199 Cessna
172M
Fixed-wing, single engine Performance Polymer Technologies LLC
Roscommon, Michigan
Standard 2021-12-27 ValidFAA registration status code V: Valid registration. All codes
N7819G Cessna
172L
Fixed-wing, single engine Cre Aviation Holdings LLC
Ramona, California
Standard 2021-12-27 ValidFAA registration status code V: Valid registration. All codes
N79ZT Dennis T Kirby/Michael B Kirby
MURPHY REBEL
Fixed-wing, single engine Co-owned owner
New Mexico
Experimental 2021-12-27 ValidFAA registration status code V: Valid registration. All codes
N97883 Cessna
172P
Fixed-wing, single engine Rick Aviation INC
Newport News, Virginia
Standard 2021-12-27 ValidFAA registration status code V: Valid registration. All codes
N4421J Piper
PA-28-140
Fixed-wing, single engine First Flight LLC
Caledonia, Michigan
Standard 2021-12-22 ValidFAA registration status code V: Valid registration. All codes
N5876D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2021-12-22 ValidFAA registration status code V: Valid registration. All codes
N10990 Bellanca
7GCBC
Fixed-wing, single engine Speed and Angels LLC
Dover, Delaware
Standard 2021-12-21 ValidFAA registration status code V: Valid registration. All codes
N64355 Cessna
172M
Fixed-wing, single engine N64355 LLC
Boulder, Colorado
Standard 2021-12-20 ValidFAA registration status code V: Valid registration. All codes
N150PP Piper
PA-25
Fixed-wing, single engine Burghduff Aviation LLC
Ludlow, South Dakota
Restricted 2021-12-18 ValidFAA registration status code V: Valid registration. All codes
N38777 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Missouri
Standard 2021-12-18 ValidFAA registration status code V: Valid registration. All codes
N47920 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-12-18 ValidFAA registration status code V: Valid registration. All codes
N6235J Piper
PA-28-151
Fixed-wing, single engine Frost Aviation Services INC
Las Cruces, New Mexico
Standard 2021-12-18 ValidFAA registration status code V: Valid registration. All codes
N8526 Bellanca
7GCBC
Fixed-wing, single engine Core Tech Services & Supply LLC
Odessa, Florida
Standard 2021-12-18 ValidFAA registration status code V: Valid registration. All codes
N734NM Cessna
172N
Fixed-wing, single engine Tin Cup Investments INC
Panama City Beach, Florida
Standard 2021-12-17 ValidFAA registration status code V: Valid registration. All codes
N2914P Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2021-12-16 ValidFAA registration status code V: Valid registration. All codes
N35AK Christopher M Piatt
X-CUB
Fixed-wing, single engine Individual owner
Alaska
Experimental 2021-12-16 ValidFAA registration status code V: Valid registration. All codes
N5194W Piper
PA-28
Fixed-wing, single engine Individual owner
Florida
Standard 2021-12-15 ValidFAA registration status code V: Valid registration. All codes
N56771 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Connecticut
Standard 2021-12-15 ValidFAA registration status code V: Valid registration. All codes
N7114Q Cessna
172L
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-12-15 ValidFAA registration status code V: Valid registration. All codes
N76TA Cessna
172P
Fixed-wing, single engine Individual owner
Texas
Standard 2021-12-15 ValidFAA registration status code V: Valid registration. All codes
N80475 Cessna
172M
Fixed-wing, single engine Texas Southern University
Houston, Texas
Standard 2021-12-15 ValidFAA registration status code V: Valid registration. All codes
N8932Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2021-12-15 ValidFAA registration status code V: Valid registration. All codes
N9880Y Champion
7GCB
Fixed-wing, single engine Individual owner
Wisconsin
Multiple 2021-12-15 ValidFAA registration status code V: Valid registration. All codes
N114TV Socata
TB 9 TAMPICO
Fixed-wing, single engine Co-owned owner
Texas
Standard 2021-12-14 ValidFAA registration status code V: Valid registration. All codes
N916PY Cessna
172I
Fixed-wing, single engine Individual owner
Maine
Standard 2021-12-14 ValidFAA registration status code V: Valid registration. All codes
N13243 Cessna
172M
Fixed-wing, single engine Sch Aviation INC Trustee
Sporle Kings Lynn,
Standard 2021-12-13 ValidFAA registration status code V: Valid registration. All codes
N1335P Piper
PA-23
Fixed-wing, multi-engine Riggin Flight Service INC
Madison, South Dakota
Standard 2021-12-13 ValidFAA registration status code V: Valid registration. All codes
N1804G Champion
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-12-13 ValidFAA registration status code V: Valid registration. All codes
N582M Bender Robert M
VANS RV-4
Fixed-wing, single engine Huffman Prairie LLC
Claymont, Delaware
Experimental 2021-12-13 ValidFAA registration status code V: Valid registration. All codes
N7040Q Cessna
172L
Fixed-wing, single engine Orlandi Properties LLC
Blairstown, New Jersey
Standard 2021-12-13 ValidFAA registration status code V: Valid registration. All codes
N9991D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Missouri
Standard 2021-12-13 ValidFAA registration status code V: Valid registration. All codes
N1967W Beech
B19
Fixed-wing, single engine Individual owner
California
Standard 2021-12-11 ValidFAA registration status code V: Valid registration. All codes
N20363 Cessna
172M
Fixed-wing, single engine Individual owner
Kansas
Standard 2021-12-11 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.