The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 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
N61030 Cessna
150J
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-11-20 ValidFAA registration status code V: Valid registration. All codes
N733BC Cessna
172N
Fixed-wing, single engine Ps N733Bc LLC
Green Bay, Wisconsin
Standard 2023-11-20 ValidFAA registration status code V: Valid registration. All codes
N734UW Cessna
172N
Fixed-wing, single engine Individual owner
Arkansas
Standard 2023-11-20 ValidFAA registration status code V: Valid registration. All codes
N98360 Piper
PA-28-140
Fixed-wing, single engine Jts Aircraft LLC
Rock Hill, South Carolina
Standard 2023-11-20 ValidFAA registration status code V: Valid registration. All codes
N154FT Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N1914H Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N2135B Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N2236W Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N43408 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N5437J Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N8097H Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N8135G Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N8137U Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N81981 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N82075 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N8405B Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N8409R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N9062K Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N9358C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N9740W Piper
PA-28-140
Fixed-wing, single engine D14 Flight Club INC
Manteno, Illinois
Standard 2023-11-19 ValidFAA registration status code V: Valid registration. All codes
N3997Q Cessna
172L
Fixed-wing, single engine Co-owned owner
California
Standard 2023-11-18 ValidFAA registration status code V: Valid registration. All codes
N4405Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Colorado
Standard 2023-11-18 ValidFAA registration status code V: Valid registration. All codes
N6319R Piper
PA-28-140
Fixed-wing, single engine Rj Aviation LLC
Hurricane, Utah
Standard 2023-11-18 ValidFAA registration status code V: Valid registration. All codes
N7200J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nebraska
Standard 2023-11-18 ValidFAA registration status code V: Valid registration. All codes
N78354 Cessna
172K
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2023-11-18 ValidFAA registration status code V: Valid registration. All codes
N9481K Piper
PA-28-151
Fixed-wing, single engine Hepp Investments LLC
Warrens, Wisconsin
Standard 2023-11-18 ValidFAA registration status code V: Valid registration. All codes
N2130C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-17 ValidFAA registration status code V: Valid registration. All codes
N36335 Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Mississippi
Standard 2023-11-17 ValidFAA registration status code V: Valid registration. All codes
N813WK American
AA-5
Fixed-wing, single engine Individual owner
Alabama
Standard 2023-11-17 ValidFAA registration status code V: Valid registration. All codes
N8142J Ferriell K E
COZZI III
Fixed-wing, single engine Individual owner
California
Experimental 2023-11-17 ValidFAA registration status code V: Valid registration. All codes
N1872J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2023-11-16 ValidFAA registration status code V: Valid registration. All codes
N30158 Cessna
177
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-11-16 ValidFAA registration status code V: Valid registration. All codes
N1207P Piper
PA-23
Fixed-wing, multi-engine N73481 LLC
Ault, Colorado
Standard 2023-11-15 ValidFAA registration status code V: Valid registration. All codes
N406TP Robert R Gates
AVID MAGNUM
Fixed-wing, single engine Individual owner
Montana
Experimental 2023-11-15 ValidFAA registration status code V: Valid registration. All codes
N425CB Piper
PA-28-151
Fixed-wing, single engine Summit Flight Academy LLC
Peculiar, Missouri
Standard 2023-11-15 ValidFAA registration status code V: Valid registration. All codes
N5025D Bellanca
7GCAA
Fixed-wing, single engine Cal-Aerofab Flight Academy INC
Chino, California
Standard 2023-11-15 ValidFAA registration status code V: Valid registration. All codes
N7123G Cessna
172K
Fixed-wing, single engine Jet & Rotor Aviation LLC
Sacramento, California
Standard 2023-11-15 ValidFAA registration status code V: Valid registration. All codes
N9017H Cessna
172M
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2023-11-15 ValidFAA registration status code V: Valid registration. All codes
N223HW Champion
7GCB
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-11-14 ValidFAA registration status code V: Valid registration. All codes
N2255E Cessna
172P
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-14 ValidFAA registration status code V: Valid registration. All codes
N5113Q Cessna
172M
Fixed-wing, single engine Tri-County Aviation LLC
Lawrenceburg, Tennessee
Standard 2023-11-14 ValidFAA registration status code V: Valid registration. All codes
N666RB Cessna
177
Fixed-wing, single engine Olam Holdings LLC
Honolulu, Hawaii
Standard 2023-11-14 ValidFAA registration status code V: Valid registration. All codes
N2694P Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-13 ValidFAA registration status code V: Valid registration. All codes
N32490 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Kentucky
Multiple 2023-11-13 ValidFAA registration status code V: Valid registration. All codes
N5123W Piper
PA-28
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2023-11-13 ValidFAA registration status code V: Valid registration. All codes
N5439W Piper
PA-28-160
Fixed-wing, single engine Individual owner
South Dakota
Standard 2023-11-13 ValidFAA registration status code V: Valid registration. All codes
N664FL Piper
PA-28-140
Fixed-wing, single engine Elon Aviation LLC
Burlington, North Carolina
Standard 2023-11-13 ValidFAA registration status code V: Valid registration. All codes
N826B Newhall George
VANS RV-6
Fixed-wing, single engine Individual owner
California
Experimental 2023-11-13 ValidFAA registration status code V: Valid registration. All codes
N9226H Cessna
172M
Fixed-wing, single engine Debt LLC
Yuma, Arizona
Standard 2023-11-13 ValidFAA registration status code V: Valid registration. All codes
N3088Z Piper
PA-18A 150
Fixed-wing, single engine Ravens Rebuilders INC
Ellenboro, West Virginia
Standard 2023-11-12 ValidFAA registration status code V: Valid registration. All codes
N46616 Cessna
172K
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2023-11-12 ValidFAA registration status code V: Valid registration. All codes
N47653 Piper
PA-28-161
Fixed-wing, single engine Fat Chance Airlines LLC
Hillsville, Virginia
Standard 2023-11-12 ValidFAA registration status code V: Valid registration. All codes
N5733F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2023-11-12 ValidFAA registration status code V: Valid registration. All codes
N9223H Cessna
172M
Fixed-wing, single engine Individual owner
New York
Standard 2023-11-12 ValidFAA registration status code V: Valid registration. All codes
N9687S Champion
7GCAA
Fixed-wing, single engine Individual owner
Florida
Standard 2023-11-12 ValidFAA registration status code V: Valid registration. All codes
N151RS Mattson Ronald N
S.H. GLASAIR RG I
Fixed-wing, single engine Sonoma Valley Aircraft INC
Vineburg, California
Experimental 2023-11-11 ValidFAA registration status code V: Valid registration. All codes
N8578D Piper
PA-18
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-11 ValidFAA registration status code V: Valid registration. All codes
N860PA Cessna
172P
Fixed-wing, single engine Re Elite Aviation LLC
Hialeah, Florida
Standard 2023-11-11 ValidFAA registration status code V: Valid registration. All codes
N9824U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Purpose Flight International LLC
Wilmington, Delaware
Standard 2023-11-11 ValidFAA registration status code V: Valid registration. All codes
N15556 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2023-11-10 ValidFAA registration status code V: Valid registration. All codes
N1848J Piper
PA-28-140
Fixed-wing, single engine Frozen Aero Enteprises LLC
Grand Forks, North Dakota
Standard 2023-11-10 ValidFAA registration status code V: Valid registration. All codes
N300JL Beech
A23-19
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-11-10 ValidFAA registration status code V: Valid registration. All codes
N3504Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-11-10 ValidFAA registration status code V: Valid registration. All codes
N4180J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2023-11-10 ValidFAA registration status code V: Valid registration. All codes
N63WT American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-11-10 ValidFAA registration status code V: Valid registration. All codes
N819MW Weber Mark S
RV-8
Fixed-wing, single engine Pussy Galore Aviation LLC
Kalispell, Montana
Experimental 2023-11-10 ValidFAA registration status code V: Valid registration. All codes
N83579 Piper
PA-18-150
Fixed-wing, single engine Mak Air Ventures LLC
Smithfield, North Carolina
Standard 2023-11-10 ValidFAA registration status code V: Valid registration. All codes
N8930M Beech
23
Fixed-wing, single engine Individual owner
Texas
Standard 2023-11-10 ValidFAA registration status code V: Valid registration. All codes
N1008X Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-09 ValidFAA registration status code V: Valid registration. All codes
N3339T Cessna
177
Fixed-wing, single engine Britt and Ashley Kieffer Farms
Weiner, Arkansas
Standard 2023-11-09 ValidFAA registration status code V: Valid registration. All codes
N733ZN Cessna
172N
Fixed-wing, single engine Atmospheric Vehicle & Spacecraft Flt Exploration
Rch Palos Vrd, California
Standard 2023-11-09 ValidFAA registration status code V: Valid registration. All codes
N131HS Slinker Al
RV-4#230
Fixed-wing, single engine Individual owner
Georgia
Experimental 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N1777J Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N2417P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Multiple 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N32767 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N35446 Cessna
172I
Fixed-wing, single engine Individual owner
Maine
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N3759P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Indiana
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N4387A Piper
PA-18S-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N5656E Cessna
172N
Fixed-wing, single engine N2893E LLC
Reno, Nevada
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N6208L Bellanca
7GCBC
Fixed-wing, single engine Individual owner
North Dakota
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N6433W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N7121P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N75788 Cessna
172N
Fixed-wing, single engine Hawk Air LLC
Parma, Ohio
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N7665D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N82332 Piper
PA-28-161
Fixed-wing, single engine Euroair Consultants LLC
Vero Beach, Florida
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N9419D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Oregon
Standard 2023-11-08 ValidFAA registration status code V: Valid registration. All codes
N64442 Cessna
172M
Fixed-wing, single engine Goodspeed Air Services LLC
Oxford, Connecticut
Standard 2023-11-07 ValidFAA registration status code V: Valid registration. All codes
N6464D Cessna
172N
Fixed-wing, single engine Honey B LLC
Hillsboro, Oregon
Standard 2023-11-07 ValidFAA registration status code V: Valid registration. All codes
N6739J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2023-11-07 ValidFAA registration status code V: Valid registration. All codes
N7164R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Multiple 2023-11-07 ValidFAA registration status code V: Valid registration. All codes
N76019 Cessna
172N
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-11-07 ValidFAA registration status code V: Valid registration. All codes
N9881V Cessna
172M
Fixed-wing, single engine Shackleford Developments of Sc LLC
Mount Pleasant, South Carolina
Standard 2023-11-07 ValidFAA registration status code V: Valid registration. All codes
N125S Cessna
172M
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2023-11-06 ValidFAA registration status code V: Valid registration. All codes
N1712J Piper
PA-28-140
Fixed-wing, single engine Twelvejuliet LLC
Moberly, Missouri
Standard 2023-11-06 ValidFAA registration status code V: Valid registration. All codes
N2765Q Piper
PA-28-161
Fixed-wing, single engine Honey B LLC
Hillsboro, Oregon
Standard 2023-11-06 ValidFAA registration status code V: Valid registration. All codes
N5067G Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Arkansas
Standard 2023-11-06 ValidFAA registration status code V: Valid registration. All codes
N5889R Cessna
172G
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-11-06 ValidFAA registration status code V: Valid registration. All codes
N157TA Piper
PA-28-161
Fixed-wing, single engine Space Coast Aircraft CO
Meritt Island, Florida
Standard 2023-11-05 ValidFAA registration status code V: Valid registration. All codes
N217LM Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2023-11-05 ValidFAA registration status code V: Valid registration. All codes
N35609 Cessna
172I
Fixed-wing, single engine Unruly Passengers LLC
Piedmont, South Carolina
Standard 2023-11-05 ValidFAA registration status code V: Valid registration. All codes
Previous Page 62 of 200 Next

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 8, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.