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
N767P Bellanca
7GCAA
Fixed-wing, single engine Aviation Investments INC
Virginia Beach, Virginia
Standard 2021-07-06 ValidFAA registration status code V: Valid registration. All codes
N5283E Cessna
172N
Fixed-wing, single engine Yummy Apple LLC
Mesa, Arizona
Standard 2021-07-02 ValidFAA registration status code V: Valid registration. All codes
N55482 Cessna
172P
Fixed-wing, single engine Individual owner
Georgia
Standard 2021-07-02 ValidFAA registration status code V: Valid registration. All codes
N5608U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2021-07-02 ValidFAA registration status code V: Valid registration. All codes
N737NC Cessna
172N
Fixed-wing, single engine Greenville Flight LLC
Greer, South Carolina
Standard 2021-07-02 ValidFAA registration status code V: Valid registration. All codes
N9261P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-07-02 ValidFAA registration status code V: Valid registration. All codes
N1580E Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2021-07-01 ValidFAA registration status code V: Valid registration. All codes
N33161 Piper
PA-28-140
Fixed-wing, single engine Fca Flight Training LLC
Washington C H, Ohio
Standard 2021-07-01 ValidFAA registration status code V: Valid registration. All codes
N574LB Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2021-07-01 ValidFAA registration status code V: Valid registration. All codes
N7140D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-07-01 ValidFAA registration status code V: Valid registration. All codes
N73926 Cessna
172N
Fixed-wing, single engine Individual owner
Colorado
Standard 2021-07-01 ValidFAA registration status code V: Valid registration. All codes
N739TU Cessna
172N
Fixed-wing, single engine Co-owned owner
Florida
Standard 2021-07-01 ValidFAA registration status code V: Valid registration. All codes
N7874G Cessna
172L
Fixed-wing, single engine Individual owner
Washington
Standard 2021-07-01 ValidFAA registration status code V: Valid registration. All codes
N97MR Martin C W/Kelley W R
REBEL
Fixed-wing, single engine Rebel Back Home LLC
Waterford, Michigan
Experimental 2021-07-01 ValidFAA registration status code V: Valid registration. All codes
N302DB Cessna
177
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2021-06-30 ValidFAA registration status code V: Valid registration. All codes
N5420W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Illinois
Standard 2021-06-30 ValidFAA registration status code V: Valid registration. All codes
N79554 Cessna
172K
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-06-30 ValidFAA registration status code V: Valid registration. All codes
N203MA Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2021-06-29 ValidFAA registration status code V: Valid registration. All codes
N4248Q Cessna
172L
Fixed-wing, single engine Physics Aviation LLC
Jonesboro, Arkansas
Standard 2021-06-29 ValidFAA registration status code V: Valid registration. All codes
N4423Q Cessna
172M
Fixed-wing, single engine Obap
Westchester, Illinois
Standard 2021-06-29 ValidFAA registration status code V: Valid registration. All codes
N4427J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2021-06-29 ValidFAA registration status code V: Valid registration. All codes
N515PU Piper
PA-28-161
Fixed-wing, single engine Aviation Trust CO LLC Trustee
Oklahoma City, Oklahoma
Standard 2021-06-29 ValidFAA registration status code V: Valid registration. All codes
N6071W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2021-06-29 ValidFAA registration status code V: Valid registration. All codes
N6076G Cessna
150K
Fixed-wing, single engine Colbert Farms INC
Davenport, Washington
Standard 2021-06-29 ValidFAA registration status code V: Valid registration. All codes
N6238W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2021-06-29 ValidFAA registration status code V: Valid registration. All codes
N7321F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Vermont
Standard 2021-06-29 ValidFAA registration status code V: Valid registration. All codes
N2478P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2021-06-28 ValidFAA registration status code V: Valid registration. All codes
N26760 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Co-owned owner
California
Standard 2021-06-28 ValidFAA registration status code V: Valid registration. All codes
N3914K Piper
PA-28-140
Fixed-wing, single engine Ermis Aviation LLC
Coleman, Wisconsin
Standard 2021-06-28 ValidFAA registration status code V: Valid registration. All codes
N6182W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2021-06-28 ValidFAA registration status code V: Valid registration. All codes
N737MP Cessna
172N
Fixed-wing, single engine Butte Aviation INC
Butte, Montana
Standard 2021-06-28 ValidFAA registration status code V: Valid registration. All codes
N739KY Cessna
172N
Fixed-wing, single engine Flyright Aviation INC
North Las Vegas, Nevada
Standard 2021-06-28 ValidFAA registration status code V: Valid registration. All codes
N98095 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2021-06-28 ValidFAA registration status code V: Valid registration. All codes
N261FC Piper
PA-28-140
Fixed-wing, single engine Individual owner
Hawaii
Standard 2021-06-26 ValidFAA registration status code V: Valid registration. All codes
N6767J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2021-06-26 ValidFAA registration status code V: Valid registration. All codes
N906WF Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2021-06-26 ValidFAA registration status code V: Valid registration. All codes
N9389E Cessna
172N
Fixed-wing, single engine Landr One LLC
Bozeman, Montana
Standard 2021-06-26 ValidFAA registration status code V: Valid registration. All codes
N117AB Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2021-06-25 ValidFAA registration status code V: Valid registration. All codes
N149JC Cessna
172P
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2021-06-25 ValidFAA registration status code V: Valid registration. All codes
N3049M Piper
PA-28-161
Fixed-wing, single engine Individual owner
New Jersey
Standard 2021-06-25 ValidFAA registration status code V: Valid registration. All codes
N5171W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Kansas
Standard 2021-06-25 ValidFAA registration status code V: Valid registration. All codes
N6944C Piper
PA-28-161
Fixed-wing, single engine Updraft Leasing LLC
Tea, South Dakota
Standard 2021-06-25 ValidFAA registration status code V: Valid registration. All codes
N75633 Cessna
172N
Fixed-wing, single engine Individual owner
Maine
Standard 2021-06-25 ValidFAA registration status code V: Valid registration. All codes
N8438R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2021-06-25 ValidFAA registration status code V: Valid registration. All codes
N127FR Cessna
172P
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-06-24 ValidFAA registration status code V: Valid registration. All codes
N17BW Beech
19A
Fixed-wing, single engine Individual owner
New York
Standard 2021-06-24 ValidFAA registration status code V: Valid registration. All codes
N5033F Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2021-06-24 ValidFAA registration status code V: Valid registration. All codes
N5465K Cessna
172P
Fixed-wing, single engine Monroe Pilots Association LLC
Monroe, North Carolina
Standard 2021-06-24 ValidFAA registration status code V: Valid registration. All codes
N5723W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Utah
Standard 2021-06-24 ValidFAA registration status code V: Valid registration. All codes
N767FT Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Florida
Standard 2021-06-24 ValidFAA registration status code V: Valid registration. All codes
N805EZ Bruce Smith
LONG-EZ
Fixed-wing, single engine Individual owner
California
Experimental 2021-06-24 ValidFAA registration status code V: Valid registration. All codes
N13668 Cessna
172M
Fixed-wing, single engine Red-Tailed Hawks Aviation Academy
Mukilteo, Washington
Standard 2021-06-23 ValidFAA registration status code V: Valid registration. All codes
N2558L Cessna
172H
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-06-23 ValidFAA registration status code V: Valid registration. All codes
N3086Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-06-23 ValidFAA registration status code V: Valid registration. All codes
N454C Piper
PA-28-140
Fixed-wing, single engine Florida Coastal Flying Club LLC
Titusville, Florida
Standard 2021-06-23 ValidFAA registration status code V: Valid registration. All codes
N5790D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New Mexico
Standard 2021-06-23 ValidFAA registration status code V: Valid registration. All codes
N733FN Cessna
172N
Fixed-wing, single engine Jls Aviation LLC DBA
Fredericksburg, Virginia
Standard 2021-06-23 ValidFAA registration status code V: Valid registration. All codes
N75602 Cessna
172N
Fixed-wing, single engine Jkg LLC
Murfreesboro, Tennessee
Standard 2021-06-23 ValidFAA registration status code V: Valid registration. All codes
N78747 Cessna
172K
Fixed-wing, single engine Individual owner
California
Standard 2021-06-23 ValidFAA registration status code V: Valid registration. All codes
N80961 Cessna
172M
Fixed-wing, single engine A S Air LLC
Lantana, Florida
Standard 2021-06-23 ValidFAA registration status code V: Valid registration. All codes
N87031 Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-06-23 ValidFAA registration status code V: Valid registration. All codes
N1493V Cessna
172M
Fixed-wing, single engine My Flight LLC
Cypress, Texas
Standard 2021-06-22 ValidFAA registration status code V: Valid registration. All codes
N2869P Piper
PA-18A
Fixed-wing, single engine Alaska Aviation Museum
Anchorage, Alaska
Restricted 2021-06-22 ValidFAA registration status code V: Valid registration. All codes
N9118D Piper
PA-18-150
Fixed-wing, single engine Yaggie Equipment LLC
Breckenridge, Minnesota
Restricted 2021-06-22 ValidFAA registration status code V: Valid registration. All codes
N98241 Piper
PA-28-140
Fixed-wing, single engine Lh Investments INC
Albany, Oregon
Standard 2021-06-22 ValidFAA registration status code V: Valid registration. All codes
N344CR Piper
PA-28
Fixed-wing, single engine Pattern Altitude Aviation Standards LLC
Sandy, Utah
Standard 2021-06-19 ValidFAA registration status code V: Valid registration. All codes
N5841W Piper
PA-28-160
Fixed-wing, single engine Destination Flyer LLC
Memphis, Tennessee
Standard 2021-06-19 ValidFAA registration status code V: Valid registration. All codes
N676Q Jackson Glen E
RV4
Fixed-wing, single engine Individual owner
Florida
Experimental 2021-06-19 ValidFAA registration status code V: Valid registration. All codes
N6969H Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-06-19 ValidFAA registration status code V: Valid registration. All codes
N7113R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-06-19 ValidFAA registration status code V: Valid registration. All codes
N88FN Piper
PA-28-140
Fixed-wing, single engine Saline County Flyers Association LLC
Little Rock, Arkansas
Standard 2021-06-19 ValidFAA registration status code V: Valid registration. All codes
N9914S Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-06-19 ValidFAA registration status code V: Valid registration. All codes
N134RS Shick Robert L Jr
RV-4
Fixed-wing, single engine Individual owner
Oregon
Experimental 2021-06-17 ValidFAA registration status code V: Valid registration. All codes
N5193H Cessna
172M
Fixed-wing, single engine Clear Skies Avionics INC
Clearwater, Florida
Standard 2021-06-17 ValidFAA registration status code V: Valid registration. All codes
N5656Y Piper
PA-18-150
Fixed-wing, single engine D & D Airpark LLC
Anchorage, Alaska
Standard 2021-06-17 ValidFAA registration status code V: Valid registration. All codes
N739LJ Cessna
172N
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2021-06-17 ValidFAA registration status code V: Valid registration. All codes
N7432R Piper
PA-28-140
Fixed-wing, single engine Heil Dan M
Hooker, Oklahoma
Standard 2021-06-17 ValidFAA registration status code V: Valid registration. All codes
N78487 Cessna
172K
Fixed-wing, single engine Individual owner
Kentucky
Standard 2021-06-17 ValidFAA registration status code V: Valid registration. All codes
N15319 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2021-06-16 ValidFAA registration status code V: Valid registration. All codes
N26337 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Washington
Standard 2021-06-16 ValidFAA registration status code V: Valid registration. All codes
N676FL Piper
PA-28-140
Fixed-wing, single engine Edwards William J
Big Rapids, Michigan
Standard 2021-06-16 ValidFAA registration status code V: Valid registration. All codes
N7525R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2021-06-16 ValidFAA registration status code V: Valid registration. All codes
N7652F Piper
PA-28-151
Fixed-wing, single engine Professional Aviation Aircraft Services LTD
New Philadelphia, Ohio
Standard 2021-06-16 ValidFAA registration status code V: Valid registration. All codes
N777SX Salmi Neil M
RV 4
Fixed-wing, single engine Individual owner
Iowa
Experimental 2021-06-16 ValidFAA registration status code V: Valid registration. All codes
N8460R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2021-06-16 ValidFAA registration status code V: Valid registration. All codes
N26414 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
California
Standard 2021-06-15 ValidFAA registration status code V: Valid registration. All codes
N6805E Cessna
175A
Fixed-wing, single engine Individual owner
California
Standard 2021-06-15 ValidFAA registration status code V: Valid registration. All codes
N7128L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Urocopters INC
Lancaster, California
Standard 2021-06-15 ValidFAA registration status code V: Valid registration. All codes
N7304F Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2021-06-15 ValidFAA registration status code V: Valid registration. All codes
N7415K Cessna
172K
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-06-15 ValidFAA registration status code V: Valid registration. All codes
N8354R Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Jersey
Standard 2021-06-15 ValidFAA registration status code V: Valid registration. All codes
N8M Teach Ted L
PITTS S1-D
Fixed-wing, single engine Individual owner
Ohio
Experimental 2021-06-15 ValidFAA registration status code V: Valid registration. All codes
N141JS Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Kentucky
Standard 2021-06-14 ValidFAA registration status code V: Valid registration. All codes
N1786T Piper
PA-28-140
Fixed-wing, single engine Eg Aviation LLC
White Lake, Michigan
Standard 2021-06-14 ValidFAA registration status code V: Valid registration. All codes
N4409Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-06-14 ValidFAA registration status code V: Valid registration. All codes
N737GA Cessna
172N
Fixed-wing, single engine N737Ga LLC
Jupiter, Florida
Standard 2021-06-14 ValidFAA registration status code V: Valid registration. All codes
N97489 Cessna
172P
Fixed-wing, single engine Neron II LLC
Lewes, Delaware
Standard 2021-06-14 ValidFAA registration status code V: Valid registration. All codes
N83283 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2021-06-12 ValidFAA registration status code V: Valid registration. All codes
N164LT Tarantola Leonard
RV-6A
Fixed-wing, single engine Individual owner
Iowa
Experimental 2021-06-11 ValidFAA registration status code V: Valid registration. All codes
N17MP Prochaska
PITTS SPECIAL S-1C
Fixed-wing, single engine Individual owner
Texas
Experimental 2021-06-11 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.