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
N273JF Cessna
172M
Fixed-wing, single engine Parrish Aviation Flight Academy LLC
Southlake, Texas
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N4346Q Cessna
172L
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N43647 Piper
PA-28-151
Fixed-wing, single engine Zg Aviation LLC
Alexandria, Minnesota
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N4403R Cessna
172M
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N5177H Cessna
172M
Fixed-wing, single engine Pomeroy Cattle Ranch LLC
Kalispell, Montana
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N52654 Cessna
172P
Fixed-wing, single engine Jin Jin Aviation LLC
Anchorage, Alaska
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N52950 Cessna
172P
Fixed-wing, single engine Jin Jin Aviation LLC
Anchorage, Alaska
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N5344S Piper
PA-28-140
Fixed-wing, single engine Top Flight Aviation Snh LLC
Savannah, Tennessee
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N5495K Cessna
172P
Fixed-wing, single engine I Fly High LLC
Mesa, Arizona
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N5982W Piper
PA-28-150
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N717VT Piper
PA-28-161
Fixed-wing, single engine N717Vt LLC
Wayne, Pennsylvania
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N734UL Cessna
172N
Fixed-wing, single engine 734Ul LLC
Blaine, Minnesota
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N79412 Cessna
172K
Fixed-wing, single engine Individual owner
Missouri
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N8302J Cessna
150
Fixed-wing, single engine Individual owner
Maine
Multiple 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N9596W Piper
PA-28-140
Fixed-wing, single engine Florida Keys Flight Academy LLC
Marathon, Florida
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N9744U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Pilot Farm LLC
Grant, Nebraska
Standard 2024-05-01 ValidFAA registration status code V: Valid registration. All codes
N2370Q Beech
23
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N3059F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
New York
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N46057 Cessna
172I
Fixed-wing, single engine Flight Time Builders INC
Memphis, Tennessee
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N5060L Bellanca
7GCAA
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N5179H Cessna
172M
Fixed-wing, single engine Flight Time Builders INC
Memphis, Tennessee
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N6923B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Oregon
Experimental 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N7078R Piper
PA-28-140
Fixed-wing, single engine Seidel Electrical Services INC
Salinas, California
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N7141Q Cessna
172L
Fixed-wing, single engine Flight Time Builders INC
Memphis, Tennessee
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N8174M Cessna
172L
Fixed-wing, single engine Flight Time Builders INC
Memphis, Tennessee
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N9625V Cessna
172M
Fixed-wing, single engine Flight Time Builders INC
Memphis, Tennessee
Standard 2024-04-30 ValidFAA registration status code V: Valid registration. All codes
N1640G Champion
7KCAB
Fixed-wing, single engine Individual owner
Vermont
Standard 2024-04-29 ValidFAA registration status code V: Valid registration. All codes
N58JS Glass
MIDGET MUSTANG M-1
Fixed-wing, single engine Individual owner
Arizona
Experimental 2024-04-29 ValidFAA registration status code V: Valid registration. All codes
N6906Q Beech
A23-19
Fixed-wing, single engine Florida Keys Flight Academy LLC
Marathon, Florida
Standard 2024-04-29 ValidFAA registration status code V: Valid registration. All codes
N738WN Cessna
172N
Fixed-wing, single engine Skywarrior Flight Training LLC
Pensacola, Florida
Standard 2024-04-29 ValidFAA registration status code V: Valid registration. All codes
N9914E Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-04-29 ValidFAA registration status code V: Valid registration. All codes
N26899 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2024-04-28 ValidFAA registration status code V: Valid registration. All codes
N5402F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-04-28 ValidFAA registration status code V: Valid registration. All codes
N6168W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-04-28 ValidFAA registration status code V: Valid registration. All codes
N7688L Piper
PA-18-150
Fixed-wing, single engine Consag LLC
Ainsworth, Nebraska
Standard 2024-04-28 ValidFAA registration status code V: Valid registration. All codes
N19695 Cessna
172L
Fixed-wing, single engine Saint Aviation INC
Dunnellon, Florida
Standard 2024-04-27 ValidFAA registration status code V: Valid registration. All codes
N4454R Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-04-27 ValidFAA registration status code V: Valid registration. All codes
N23281 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2024-04-26 ValidFAA registration status code V: Valid registration. All codes
N7086G Cessna
172K
Fixed-wing, single engine Sniffen Wesley H
Sycamore, Ohio
Standard 2024-04-26 ValidFAA registration status code V: Valid registration. All codes
N733BG Cessna
172N
Fixed-wing, single engine Aviator Air Flight School LLC
Grand Prairie, Texas
Standard 2024-04-26 ValidFAA registration status code V: Valid registration. All codes
N739WF Cessna
172N
Fixed-wing, single engine Skywarrior Flight Training LLC
Pensacola, Florida
Standard 2024-04-26 ValidFAA registration status code V: Valid registration. All codes
N8880N Piper
PA-28-140
Fixed-wing, single engine Anderson Aviation LLC
Bulverde, Texas
Standard 2024-04-26 ValidFAA registration status code V: Valid registration. All codes
N1534E Cessna
172N
Fixed-wing, single engine Co-owned owner
Utah
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N3292T Cessna
177
Fixed-wing, single engine Celestial Kinetics Flight Academy LLC
Waupaca, Wisconsin
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N345JG Piper
PA-23-160
Fixed-wing, multi-engine Go Fly INC
Spring Hill, Florida
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N3653P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Utah
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N5069V Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
Indiana
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N5880E Cessna
172N
Fixed-wing, single engine Nashville Skyscrapers LLC
Old Hickory, Tennessee
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N60DV Stephens Richard W
RV-6
Fixed-wing, single engine Delta Victor LLC
Plano, Texas
Experimental 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N610AC Cessna
172M
Fixed-wing, single engine Hybird INC
Corpus Christi, Texas
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N617E Fredric N Paulsen
STOL CH750
Fixed-wing, single engine Individual owner
Michigan
Experimental 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N734WR Cessna
172N
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N739GH Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N80340 Cessna
172M
Fixed-wing, single engine Tangojuliet Aviation LLC
La Porte, Indiana
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N9029L Champion
7GCBC
Fixed-wing, single engine Marracino Services LLC
Deland, Florida
Standard 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N945VK Kapp Virgil
VANS RV6A
Fixed-wing, single engine Co-owned owner
Indiana
Experimental 2024-04-25 ValidFAA registration status code V: Valid registration. All codes
N1342R Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Washington
Standard 2024-04-24 ValidFAA registration status code V: Valid registration. All codes
N203RV Emmons John
RV-3
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Experimental 2024-04-24 ValidFAA registration status code V: Valid registration. All codes
N33802 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-04-24 ValidFAA registration status code V: Valid registration. All codes
N46246 Cessna
172I
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-04-24 ValidFAA registration status code V: Valid registration. All codes
N739FL Piper
PA-28-140
Fixed-wing, single engine Arrowking INC
Edmond, Oklahoma
Standard 2024-04-24 ValidFAA registration status code V: Valid registration. All codes
N1701A Piper
PA-18
Fixed-wing, single engine Cirri Joseph A
Deming, New Mexico
Standard 2024-04-23 ValidFAA registration status code V: Valid registration. All codes
N2309Q Beech
23
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-04-23 ValidFAA registration status code V: Valid registration. All codes
N3713Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-04-23 ValidFAA registration status code V: Valid registration. All codes
N6052L American
AA-5
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-04-23 ValidFAA registration status code V: Valid registration. All codes
N6200W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-04-23 ValidFAA registration status code V: Valid registration. All codes
N712WH Robinson Helicopter
R22 BETA
Helicopter Whiskey Hotel LLC
Marengo, Illinois
Standard 2024-04-23 ValidFAA registration status code V: Valid registration. All codes
N8265N Piper
PA-28-140
Fixed-wing, single engine Immanuel Baptist Church of Kansas City Kansas
Basehor, Kansas
Standard 2024-04-23 ValidFAA registration status code V: Valid registration. All codes
N8970V Cessna
172M
Fixed-wing, single engine Winding Creek Aviation LLC
Snellville, Georgia
Standard 2024-04-23 ValidFAA registration status code V: Valid registration. All codes
N95347 Piper
PA-28-140
Fixed-wing, single engine Jora Imports LLC
Atlanta, Georgia
Standard 2024-04-23 ValidFAA registration status code V: Valid registration. All codes
N13806 Cessna
172M
Fixed-wing, single engine Mpr Aviation LLC
Mcpherson, Kansas
Standard 2024-04-22 ValidFAA registration status code V: Valid registration. All codes
N140KW Piper
PA-28-140
Fixed-wing, single engine 47 North Aviation LLC DBA
Wenatchee, Washington
Standard 2024-04-22 ValidFAA registration status code V: Valid registration. All codes
N15000 Cessna
172K
Fixed-wing, single engine Central District Aviation LLC
Seattle, Washington
Standard 2024-04-22 ValidFAA registration status code V: Valid registration. All codes
N6539H Cessna
172M
Fixed-wing, single engine Above the Haze LLC
San Lorenzo, California
Standard 2024-04-22 ValidFAA registration status code V: Valid registration. All codes
N738WM Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2024-04-22 ValidFAA registration status code V: Valid registration. All codes
N80436 Cessna
172M
Fixed-wing, single engine N80436 LLC
Columbia, Mississippi
Standard 2024-04-22 ValidFAA registration status code V: Valid registration. All codes
N20520 Cessna
172M
Fixed-wing, single engine Treats Aviation INC
Enumclaw, Washington
Standard 2024-04-21 ValidFAA registration status code V: Valid registration. All codes
N9216D Piper
PA-22-160
Fixed-wing, single engine Blackbird Aviation LLC
Bedford, Pennsylvania
Standard 2024-04-21 ValidFAA registration status code V: Valid registration. All codes
N9554L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2024-04-21 ValidFAA registration status code V: Valid registration. All codes
N5145K Cessna
172N
Fixed-wing, single engine Zulu Jets LLC
Boerne, Texas
Standard 2024-04-20 ValidFAA registration status code V: Valid registration. All codes
N54357 Cessna
172P
Fixed-wing, single engine Rick Aviation INC
Newport News, Virginia
Standard 2024-04-20 ValidFAA registration status code V: Valid registration. All codes
N7720G Cessna
172L
Fixed-wing, single engine Zulu Jets LLC
Boerne, Texas
Standard 2024-04-20 ValidFAA registration status code V: Valid registration. All codes
N1431D Piper
PA-18-150
Fixed-wing, single engine Pa-18 LLC
Hood River, Oregon
Standard 2024-04-19 ValidFAA registration status code V: Valid registration. All codes
N21249 Cessna
172M
Fixed-wing, single engine Western Kentucky Petroleum INC
Osage Beach, Missouri
Standard 2024-04-19 ValidFAA registration status code V: Valid registration. All codes
N3273Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-04-19 ValidFAA registration status code V: Valid registration. All codes
N4690R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Utah
Standard 2024-04-19 ValidFAA registration status code V: Valid registration. All codes
N680X Piper
PA-28-161
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-04-19 ValidFAA registration status code V: Valid registration. All codes
N1976F Cessna
172N
Fixed-wing, single engine Raritan Valley Flying School
Princeton, New Jersey
Standard 2024-04-18 ValidFAA registration status code V: Valid registration. All codes
N2359Y Cessna
177
Fixed-wing, single engine Individual owner
Florida
Standard 2024-04-18 ValidFAA registration status code V: Valid registration. All codes
N3579Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2024-04-18 ValidFAA registration status code V: Valid registration. All codes
N3915P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-04-18 ValidFAA registration status code V: Valid registration. All codes
N433AG Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-04-18 ValidFAA registration status code V: Valid registration. All codes
N501RD Robinson Helicopter
R22 BETA
Helicopter Backcountry Endeavours LLC
Dassel, Minnesota
Multiple 2024-04-18 ValidFAA registration status code V: Valid registration. All codes
N5714U Piper
PA-28-140
Fixed-wing, single engine Txl Consulting LLC
Hurst, Texas
Standard 2024-04-18 ValidFAA registration status code V: Valid registration. All codes
N6385N Champion
7GCAA
Fixed-wing, single engine Individual owner
Michigan
Restricted 2024-04-18 ValidFAA registration status code V: Valid registration. All codes
N19674 Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2024-04-17 ValidFAA registration status code V: Valid registration. All codes
N2365L Beech
23
Fixed-wing, single engine Individual owner
Colorado
Standard 2024-04-17 ValidFAA registration status code V: Valid registration. All codes
N26840 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Maryland
Standard 2024-04-17 ValidFAA registration status code V: Valid registration. All codes
N33672 Piper
PA-28-151
Fixed-wing, single engine Nulton Enterprises LLC
Johnstown, Pennsylvania
Standard 2024-04-17 ValidFAA registration status code V: Valid registration. All codes
N4373J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2024-04-17 ValidFAA registration status code V: Valid registration. All codes
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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.