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
N1115J Piper
PA-23-150
Fixed-wing, multi-engine Individual owner
Idaho
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N224V Piper
PA-28-161
Fixed-wing, single engine Up and Up Aviation LLC
Magnolia, Texas
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N23GD Cessna
172N
Fixed-wing, single engine Phoenix Composite Solutions LLC
Oscoda, Michigan
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N2961X Cessna
177
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N311AW Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N3574C Piper
PA-28-161
Fixed-wing, single engine Atd Pilot Training LLC
Kansas City, Missouri
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N4464Z Piper
PA-18-150
Fixed-wing, single engine Mcinelly Leon
Fairbanks, Alaska
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N4664R Piper
PA-28-140
Fixed-wing, single engine Rd Aire LLC
Opelika, Alabama
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N5091E Cessna
172N
Fixed-wing, single engine American Asset Leasing LLC
Aurora, Oregon
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N5897L American
AA-5
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N59EA Piper
PA-28-140
Fixed-wing, single engine Horizon Aviation LLC
Brooks, Georgia
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N61943 Cessna
172M
Fixed-wing, single engine Phoenix Composite Solutions LLC
Oscoda, Michigan
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N6589R Beech
B19
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N86574 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N191SH Cessna
172K
Fixed-wing, single engine Individual owner
Mississippi
Standard 2024-11-05 ValidFAA registration status code V: Valid registration. All codes
N269BJ Cessna
172N
Fixed-wing, single engine N2893E LLC
Reno, Nevada
Standard 2024-11-05 ValidFAA registration status code V: Valid registration. All codes
N55606 Piper
PA-28-140
Fixed-wing, single engine Falcon Aviation Academy CORP
Chino, California
Standard 2024-11-05 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N7134C Piper
PA-28-140
Fixed-wing, single engine US Flight Academy International INC
Post, Texas
Standard 2024-11-05 ValidFAA registration status code V: Valid registration. All codes
N907M John M Patterson
MIKE'S SPECIAL #1
Fixed-wing, single engine Individual owner
Alaska
Experimental 2024-11-05 ValidFAA registration status code V: Valid registration. All codes
N3113P Piper
PA-23-150
Fixed-wing, multi-engine Individual owner
Illinois
Standard 2024-11-04 ValidFAA registration status code V: Valid registration. All codes
N32318 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2024-11-04 ValidFAA registration status code V: Valid registration. All codes
N32700 Piper
PA-28-140
Fixed-wing, single engine Mob Aviation USA LLC
Auburndale, Florida
Standard 2024-11-04 ValidFAA registration status code V: Valid registration. All codes
N3559Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-11-04 ValidFAA registration status code V: Valid registration. All codes
N9392H Cessna
172M
Fixed-wing, single engine Vc Flights LLC
Miami, Florida
Standard 2024-11-04 ValidFAA registration status code V: Valid registration. All codes
N5167E Cessna
172N
Fixed-wing, single engine Jkg LLC
Murfreesboro, Tennessee
Standard 2024-11-02 ValidFAA registration status code V: Valid registration. All codes
N6654H Cessna
172M
Fixed-wing, single engine Individual owner
Kansas
Standard 2024-11-02 ValidFAA registration status code V: Valid registration. All codes
N1693T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kansas
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N26988 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N31581 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Kentucky
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N4159X Aero Commander
100
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N5331D Cessna
172N
Fixed-wing, single engine Purdue Aviation LLC
West Lafayette, Indiana
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N548MW Wonder Michael S
RV-6
Fixed-wing, single engine Individual owner
Florida
Experimental 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N7395G Cessna
172K
Fixed-wing, single engine Individual owner
Florida
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N84271 Cessna
172K
Fixed-wing, single engine Anderson Operations LLC
Fallon, Nevada
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N95244 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N2720E Cessna
172N
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N3481T Cessna
177
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N5985W Piper
PA-28-140
Fixed-wing, single engine Sterling West CORP
Camden, Delaware
Standard 2024-10-31 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N71PK Cessna
172M
Fixed-wing, single engine Bob Hoover Academy
Salinas, California
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N71PM Piper
PA-28-140
Fixed-wing, single engine Anderson Aviation LLC
Bulverde, Texas
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N733PD Cessna
172N
Fixed-wing, single engine Three Tree Aviation LLC
Natchez, Mississippi
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N100LD Cessna
177
Fixed-wing, single engine Individual owner
Iowa
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N13741 Cessna
172M
Fixed-wing, single engine Co-owned owner
Iowa
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N15962 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N2350E Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N3361T Cessna
177
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N3831Z Piper
PA-18-150
Fixed-wing, single engine Floats N Hoes LLC
Umatilla, Florida
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N4242Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N6263G Cessna
172N
Fixed-wing, single engine Perfect Aircraft LLC
Ocala, Florida
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N636CX Cessna
172N
Fixed-wing, single engine Newton Property Leasing LLC
Greene, Iowa
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N6443R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N68567 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Washington
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N84001 Piper
PA-28-161
Fixed-wing, single engine Darcy Aviation LLC
Danbury, Connecticut
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N8EJ Jankow Edward W
MUSTANG II
Fixed-wing, single engine Individual owner
Oklahoma
Experimental 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N9402K Piper
PA-28-151
Fixed-wing, single engine Cash Management Consulting LLC
Granite Springs, New York
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N96DC Piper
PA-18-150
Fixed-wing, single engine Vertical Horizon Aviation LLC
Sandown, New Hampshire
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N29441 Cessna
177
Fixed-wing, single engine Individual owner
California
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N42404 Piper
PA-28-151
Fixed-wing, single engine Millennium Airways LLC
Valencia, California
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N454Q Piper
PA-18A
Fixed-wing, single engine Twin Buttes Ranch INC
Shawnee, Wyoming
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N739HX Cessna
172N
Fixed-wing, single engine 739Hx LLC
Jackson, Michigan
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N7581G Cessna
172L
Fixed-wing, single engine Manasco INC
Tucson, Arizona
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N7603G Cessna
172L
Fixed-wing, single engine Individual owner
New York
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N15682 Piper
PA-28-140
Fixed-wing, single engine Bold Pipe Dream LLC
Los Angeles, California
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N1828 Champion
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N272AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Flying Radish LLC
Vineyard Haven, Massachusetts
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N32069 Piper
PA-28-151
Fixed-wing, single engine Adb Investments LLC
Duncan, South Carolina
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N3852Q Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N4110X Aero Commander
100
Fixed-wing, single engine Individual owner
New York
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N41507 Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N622KS Smith Emmett E
VANS RV-4
Fixed-wing, single engine Individual owner
West Virginia
Experimental 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N737TF Cessna
172N
Fixed-wing, single engine Thrifty Comercio INC
Austin, Texas
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N7934G Cessna
172L
Fixed-wing, single engine 7550G LLC
Birmingham, Michigan
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N80928 Cessna
172M
Fixed-wing, single engine Bellingham Aviation Services LLC
Bellingham, Washington
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N87RC Cox Rondal R
COX PITTS S1
Fixed-wing, single engine Time To Fly Meseum
Burleson, Texas
Experimental 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N12181 Cessna
172M
Fixed-wing, single engine Great Landings Aircraft LLC
Arlington, Indiana
Standard 2024-10-26 ValidFAA registration status code V: Valid registration. All codes
N2000H Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-10-26 ValidFAA registration status code V: Valid registration. All codes
N7453D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-10-26 ValidFAA registration status code V: Valid registration. All codes
N77222 Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-10-26 ValidFAA registration status code V: Valid registration. All codes
N3842V Cessna
172M
Fixed-wing, single engine N3842V LLC
Wainscott, New York
Standard 2024-10-25 ValidFAA registration status code V: Valid registration. All codes
N61557 Cessna
172M
Fixed-wing, single engine Angle of Attack LLC
Boise, Idaho
Standard 2024-10-25 ValidFAA registration status code V: Valid registration. All codes
N8283N Piper
PA-28-140
Fixed-wing, single engine Ruth Joyce Aviation LLC
Henderson, Texas
Standard 2024-10-25 ValidFAA registration status code V: Valid registration. All codes
N2229E Cessna
172N
Fixed-wing, single engine Six Pack Aviation LLC
Pocono Pines, Pennsylvania
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N222BV Cessna
172M
Fixed-wing, single engine Bb Air LLC
Chesapeake, Virginia
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N257SD Sagaert Ren
MURPHY REBEL
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N4663R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N7347D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N757LE Cessna
172M
Fixed-wing, single engine Lake Elmo Aero LLC
Lake Elmo, Minnesota
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N7736G Cessna
172L
Fixed-wing, single engine Knudson Aviation LLC
Bozeman, Montana
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N80507 Cessna
172M
Fixed-wing, single engine High Flight Academy LLC
Allison Park, Pennsylvania
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N84511 Cessna
172K
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N88306 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N914RR Cessna
172M
Fixed-wing, single engine Individual owner
Montana
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N9819U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N20187 Cessna
172M
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-10-23 ValidFAA registration status code V: Valid registration. All codes
N4159P Piper
PA-23-160
Fixed-wing, multi-engine Individual owner
Oregon
Standard 2024-10-23 ValidFAA registration status code V: Valid registration. All codes
N4399X Piper
PA-28-151
Fixed-wing, single engine Dodson International Parts INC
Rantoul, Kansas
Standard 2024-10-23 ValidFAA registration status code V: Valid registration. All codes
N4953G Cessna
172N
Fixed-wing, single engine Mcfly LLC
Casper, Wyoming
Standard 2024-10-23 ValidFAA registration status code V: Valid registration. All codes
N595K Cessna
172L
Fixed-wing, single engine Harvey Air LLC
Doylestown, Pennsylvania
Standard 2024-10-23 ValidFAA registration status code V: Valid registration. All codes
N78371 Cessna
172K
Fixed-wing, single engine Individual owner
Montana
Standard 2024-10-23 ValidFAA registration status code V: Valid registration. All codes
N12GC Contner Gary E
RV-4
Fixed-wing, single engine Individual owner
Ohio
Experimental 2024-10-22 ValidFAA registration status code V: Valid registration. All codes
Previous Page 39 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.