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
N3956M Piper
PA-28-161
Fixed-wing, single engine New England Aviation LLC
Plainville, Connecticut
Standard 2019-06-24 ValidFAA registration status code V: Valid registration. All codes
N727GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Co-owned owner
New Mexico
Standard 2019-06-24 ValidFAA registration status code V: Valid registration. All codes
N9622H Cessna
172M
Fixed-wing, single engine Sanders Flight Training Center LLC
Jasper, Alabama
Standard 2019-06-21 ValidFAA registration status code V: Valid registration. All codes
N158SB American Champion Aircraft
7GCBC
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2019-06-20 ValidFAA registration status code V: Valid registration. All codes
N1095U Cessna
172M
Fixed-wing, single engine Individual owner
Louisiana
Standard 2019-06-19 ValidFAA registration status code V: Valid registration. All codes
N1108E Bellanca
7GCBC
Fixed-wing, single engine Scissortail Aviation LLC
Enid, Oklahoma
Standard 2019-06-19 ValidFAA registration status code V: Valid registration. All codes
N3915K Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2019-06-19 ValidFAA registration status code V: Valid registration. All codes
N405RV Barks David E
RV 4
Fixed-wing, single engine Individual owner
Nevada
Experimental 2019-06-19 ValidFAA registration status code V: Valid registration. All codes
N4645R Piper
PA-28-140
Fixed-wing, single engine Kunz Consulting INC
Sun Prairie, Wisconsin
Standard 2019-06-19 ValidFAA registration status code V: Valid registration. All codes
N479CN Cessna
172M
Fixed-wing, single engine Flight World INC
San Juan, Puerto Rico
Standard 2019-06-19 ValidFAA registration status code V: Valid registration. All codes
N739VE Cessna
172N
Fixed-wing, single engine Redstone Arsenal Flying Activity
Redstone Arsenal, Alabama
Standard 2019-06-19 ValidFAA registration status code V: Valid registration. All codes
N97BS Cessna
172M
Fixed-wing, single engine Sidewinder Services LLC
Genoa, Nevada
Standard 2019-06-19 ValidFAA registration status code V: Valid registration. All codes
N21779 Everett Elmo
RV-4
Fixed-wing, single engine Individual owner
California
Experimental 2019-06-18 ValidFAA registration status code V: Valid registration. All codes
N40798 Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2019-06-18 ValidFAA registration status code V: Valid registration. All codes
N4465Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-06-18 ValidFAA registration status code V: Valid registration. All codes
N54728 Cessna
172P
Fixed-wing, single engine Individual owner
South Dakota
Standard 2019-06-18 ValidFAA registration status code V: Valid registration. All codes
N9119D Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2019-06-18 ValidFAA registration status code V: Valid registration. All codes
N9608W Piper
PA-28-140
Fixed-wing, single engine Bright Skies Sales & Leasing LLC
Hendersonville, Tennessee
Standard 2019-06-18 ValidFAA registration status code V: Valid registration. All codes
N20823 Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2019-06-17 ValidFAA registration status code V: Valid registration. All codes
N2137J Piper
PA-28-161
Fixed-wing, single engine Adverse Yaw LLC
Milford, Connecticut
Standard 2019-06-17 ValidFAA registration status code V: Valid registration. All codes
N55780 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2019-06-17 ValidFAA registration status code V: Valid registration. All codes
N737JX Cessna
172N
Fixed-wing, single engine R&R Aero Services LLC
Eden Prairie, Minnesota
Standard 2019-06-17 ValidFAA registration status code V: Valid registration. All codes
N320AG Gallant Arthur
LANCAIR 320
Fixed-wing, single engine Individual owner
Florida
Experimental 2019-06-14 ValidFAA registration status code V: Valid registration. All codes
N6057W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2019-06-14 ValidFAA registration status code V: Valid registration. All codes
N6714L Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2019-06-14 ValidFAA registration status code V: Valid registration. All codes
N983RB Baker Gene Ray
BAKER-T
Fixed-wing, single engine Individual owner
Texas
Experimental 2019-06-14 ValidFAA registration status code V: Valid registration. All codes
N179RA American Champion Aircraft
7GCBC
Fixed-wing, single engine Morter Roger P
Hermiston, Oregon
Standard 2019-06-13 ValidFAA registration status code V: Valid registration. All codes
N5116J Cessna
172N
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2019-06-13 ValidFAA registration status code V: Valid registration. All codes
N5208J Cessna
172N
Fixed-wing, single engine Fly Dreams Aircraft Group INC
Fort Lauderdale, Florida
Standard 2019-06-13 ValidFAA registration status code V: Valid registration. All codes
N6781G Galeazzi Remo
MARQUART MA-5
Fixed-wing, single engine Individual owner
Texas
Experimental 2019-06-13 ValidFAA registration status code V: Valid registration. All codes
N75726 Cessna
172N
Fixed-wing, single engine Don Davis Aviation INC
Henderson, Kentucky
Standard 2019-06-13 ValidFAA registration status code V: Valid registration. All codes
N75838 Cessna
172N
Fixed-wing, single engine Individual owner
North Carolina
Standard 2019-06-13 ValidFAA registration status code V: Valid registration. All codes
N8254J Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2019-06-13 ValidFAA registration status code V: Valid registration. All codes
N3636K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2019-06-12 ValidFAA registration status code V: Valid registration. All codes
N83FD Dougherty Joseph Leo
GLAS STAR
Fixed-wing, single engine Individual owner
California
Experimental 2019-06-12 ValidFAA registration status code V: Valid registration. All codes
N9594H Cessna
172M
Fixed-wing, single engine Eagle Sky Patrol INC
Deadwood, South Dakota
Standard 2019-06-12 ValidFAA registration status code V: Valid registration. All codes
N9672K Piper
PA-28-151
Fixed-wing, single engine Everglades Aviation Academy LLC
Weston, Florida
Standard 2019-06-12 ValidFAA registration status code V: Valid registration. All codes
N13778 Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2019-06-11 ValidFAA registration status code V: Valid registration. All codes
N3197Z Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Texas
Restricted 2019-06-11 ValidFAA registration status code V: Valid registration. All codes
N3920K Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2019-06-11 ValidFAA registration status code V: Valid registration. All codes
N5183R Cessna
172M
Fixed-wing, single engine Thompson Aerial Service INC
Wyndmere, North Dakota
Standard 2019-06-11 ValidFAA registration status code V: Valid registration. All codes
N54933 Piper
PA-18-150
Fixed-wing, single engine Sammy Supercub LLC Series B
Reno, Nevada
Standard 2019-06-11 ValidFAA registration status code V: Valid registration. All codes
N6711W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-06-11 ValidFAA registration status code V: Valid registration. All codes
N74C Cessna
172N
Fixed-wing, single engine Personal Aviation INC
Poway, California
Standard 2019-06-11 ValidFAA registration status code V: Valid registration. All codes
N9100H Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-06-11 ValidFAA registration status code V: Valid registration. All codes
N1391R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
California
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N172CA Cessna
172N
Fixed-wing, single engine California Airways LLC
Hayward, California
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N214RB Robinson Helicopter
R22 BETA
Helicopter S and S 1165 Investments LLC
Wimberley, Texas
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N2417E Cessna
172N
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N329RP Raines R/Pettis L
PETTIS RV6A
Fixed-wing, single engine Co-owned owner
Georgia
Experimental 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N35760 Cessna
172I
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N42292 Cessna
172M
Fixed-wing, single engine Co-owned owner
Washington
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N52275 Cessna
172P
Fixed-wing, single engine California Airways LLC
Hayward, California
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N5229R Cessna
172M
Fixed-wing, single engine Ocala Aviation Services INC
Ocala, Florida
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N64087 Cessna
172P
Fixed-wing, single engine California Airways LLC
Hayward, California
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N769RA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N9986S American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Florida
Standard 2019-06-10 ValidFAA registration status code V: Valid registration. All codes
N35302 Cessna
172I
Fixed-wing, single engine William Benjamin LLC
Orono, Minnesota
Standard 2019-06-07 ValidFAA registration status code V: Valid registration. All codes
N4006Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2019-06-07 ValidFAA registration status code V: Valid registration. All codes
N5174E Cessna
172N
Fixed-wing, single engine Blue Sky Pilots INC
Salem, Oregon
Standard 2019-06-07 ValidFAA registration status code V: Valid registration. All codes
N90957 Piper
PA-18-150
Fixed-wing, single engine Cubcrawlers LLC
Cocoa, Florida
Standard 2019-06-07 ValidFAA registration status code V: Valid registration. All codes
N3523M Piper
PA-12
Fixed-wing, single engine Michigan Seaplane LLC
White Lake, Michigan
Standard 2019-06-06 ValidFAA registration status code V: Valid registration. All codes
N5202E Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2019-06-06 ValidFAA registration status code V: Valid registration. All codes
N6490D Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2019-06-06 ValidFAA registration status code V: Valid registration. All codes
N737CV Cessna
172N
Fixed-wing, single engine Deland Aviation LLC
Deland, Florida
Standard 2019-06-06 ValidFAA registration status code V: Valid registration. All codes
N73819 Cessna
172N
Fixed-wing, single engine Individual owner
Washington
Standard 2019-06-06 ValidFAA registration status code V: Valid registration. All codes
N738HX Cessna
172N
Fixed-wing, single engine Rick Aviation INC
Newport News, Virginia
Standard 2019-06-06 ValidFAA registration status code V: Valid registration. All codes
N953BC Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2019-06-06 ValidFAA registration status code V: Valid registration. All codes
N98203 Piper
PA-28-140
Fixed-wing, single engine Rfb Cherokee LLC
Perkinston, Mississippi
Standard 2019-06-06 ValidFAA registration status code V: Valid registration. All codes
N144BC Champion
7GCB
Fixed-wing, single engine Individual owner
Washington
Standard 2019-06-05 ValidFAA registration status code V: Valid registration. All codes
N3708P Piper
PA-22-150
Fixed-wing, single engine Aeromarine Consulting INC
Brandon, Florida
Standard 2019-06-05 ValidFAA registration status code V: Valid registration. All codes
N41359 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Arizona
Standard 2019-06-05 ValidFAA registration status code V: Valid registration. All codes
N48AR Piper
PA-30
Fixed-wing, multi-engine Gacey INC Trustee
Wilmington, Delaware
Standard 2019-06-05 ValidFAA registration status code V: Valid registration. All codes
N5870U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2019-06-05 ValidFAA registration status code V: Valid registration. All codes
N757MK Cessna
172M
Fixed-wing, single engine 101 Flight LLC
Waterford, Michigan
Standard 2019-06-05 ValidFAA registration status code V: Valid registration. All codes
N9955U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-06-05 ValidFAA registration status code V: Valid registration. All codes
N3135E Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2019-06-04 ValidFAA registration status code V: Valid registration. All codes
N4325Q Cessna
172L
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-06-04 ValidFAA registration status code V: Valid registration. All codes
N4877J Cessna
172N
Fixed-wing, single engine R&R Aero Services LLC
Eden Prairie, Minnesota
Standard 2019-06-04 ValidFAA registration status code V: Valid registration. All codes
N504JJ Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-06-04 ValidFAA registration status code V: Valid registration. All codes
N5075V Varga Aircraft Corp.
2150A
Fixed-wing, single engine Co-owned owner
Texas
Standard 2019-06-04 ValidFAA registration status code V: Valid registration. All codes
N120MC Socata
TB 9 TAMPICO
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N12375 Cessna
172M
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N1454P Piper
PA-23
Fixed-wing, multi-engine Lansing Community College
Mason, Michigan
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N1461E Cessna
172N
Fixed-wing, single engine Oracle Aviation LLC
Omaha, Nebraska
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N24AU Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Casa of Sc LLC
Georgetown, South Carolina
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N460AC American Champion Aircraft
7GCAA
Fixed-wing, single engine Arizona Skies Aviation LLC
Scottsdale, Arizona
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N5825W Piper
PA-28-160
Fixed-wing, single engine Indian Trucking Company INC
Destin, Florida
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N8121F Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N8CN Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N9473D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2019-06-03 ValidFAA registration status code V: Valid registration. All codes
N52501 Cessna
172P
Fixed-wing, single engine Freedom Works Consulting LLC
Louisville, Kentucky
Standard 2019-05-30 ValidFAA registration status code V: Valid registration. All codes
N5286W Piper
PA-28
Fixed-wing, single engine Co-owned owner
New Hampshire
Standard 2019-05-30 ValidFAA registration status code V: Valid registration. All codes
N5447F Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Florida
Standard 2019-05-30 ValidFAA registration status code V: Valid registration. All codes
N70413 Cessna
172M
Fixed-wing, single engine Lake Elmo Aero LLC
Lake Elmo, Minnesota
Standard 2019-05-30 ValidFAA registration status code V: Valid registration. All codes
N8872D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-05-30 ValidFAA registration status code V: Valid registration. All codes
N13890 Cessna
172M
Fixed-wing, single engine Brammer Flying LLC
Johnston, South Carolina
Standard 2019-05-29 ValidFAA registration status code V: Valid registration. All codes
N273ND Piper
PA-28-161
Fixed-wing, single engine Purdue Aviation LLC
West Lafayette, Indiana
Standard 2019-05-29 ValidFAA registration status code V: Valid registration. All codes
N5102D Cessna
172N
Fixed-wing, single engine B & R Aircraft LLC
Wadsworth, Ohio
Standard 2019-05-29 ValidFAA registration status code V: Valid registration. All codes
N797VV Van Vooren Claude P
GLASTAR
Fixed-wing, single engine Autopia LLC
Missoula, Montana
Experimental 2019-05-29 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.