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
N9609W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-10-05 ValidFAA registration status code V: Valid registration. All codes
N117MT Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-10-04 ValidFAA registration status code V: Valid registration. All codes
N5732U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Nebraska
Standard 2024-10-04 ValidFAA registration status code V: Valid registration. All codes
N5831L American
AA-5
Fixed-wing, single engine Cooks Aviation LLC
Conover, North Carolina
Standard 2024-10-04 ValidFAA registration status code V: Valid registration. All codes
N81RB Bentley Richard L
RV-4
Fixed-wing, single engine Individual owner
Washington
Experimental 2024-10-04 ValidFAA registration status code V: Valid registration. All codes
N125JS Snyder John W Iii
RV-4
Fixed-wing, single engine Individual owner
Arizona
Experimental 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N2875X Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N2AX Ackerman Philip T
RV-4
Fixed-wing, single engine Individual owner
Oregon
Experimental 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N3303Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N6231E Cessna
172N
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N738YP Cessna
172N
Fixed-wing, single engine Individual owner
Louisiana
Standard 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N7413J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N7607F Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N41387 Piper
PA-28-140
Fixed-wing, single engine Horizon Aviation LLC
Brooks, Georgia
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N4158Y Piper
PA-18-150
Fixed-wing, single engine Alliance Aircraft Sales INC
Pierre, South Dakota
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N4613Q Cessna
172M
Fixed-wing, single engine South Seattle College
Seattle, Washington
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N6901H Cessna
172M
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N7035G Lebaugh Chris
RV6
Fixed-wing, single engine Individual owner
California
Experimental 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N7367L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Withheld at owner's request
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N7902S Bellanca
7GCAA
Fixed-wing, single engine N7902S Wings LLC
Forest City, Pennsylvania
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N90704 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N9544H Cessna
172M
Fixed-wing, single engine Southern Aero LLC
Homestead, Florida
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N196AR Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-10-01 ValidFAA registration status code V: Valid registration. All codes
N2080V Piper
PA-28-161
Fixed-wing, single engine Mcguire Rental Properties LLC
Prescott, Arkansas
Standard 2024-10-01 ValidFAA registration status code V: Valid registration. All codes
N3479T Cessna
177
Fixed-wing, single engine Individual owner
Florida
Standard 2024-10-01 ValidFAA registration status code V: Valid registration. All codes
N130ER Socata
TB 9 TAMPICO
Fixed-wing, single engine Individual owner
New York
Standard 2024-09-30 ValidFAA registration status code V: Valid registration. All codes
N1946H Piper
PA-28-161
Fixed-wing, single engine Macair Aviation LLC
Xenia, Ohio
Standard 2024-09-30 ValidFAA registration status code V: Valid registration. All codes
N2628Z Robinson Helicopter
R22 BETA
Helicopter Individual owner
Texas
Standard 2024-09-30 ValidFAA registration status code V: Valid registration. All codes
N6454W Piper
PA-28-140
Fixed-wing, single engine Sm Aviation LLC
Clermont, Florida
Standard 2024-09-30 ValidFAA registration status code V: Valid registration. All codes
N78183 Cessna
172K
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-09-30 ValidFAA registration status code V: Valid registration. All codes
N862TC Piper
PA-28-161
Fixed-wing, single engine Airmax Aviation LLC
Lake Worth, Florida
Standard 2024-09-30 ValidFAA registration status code V: Valid registration. All codes
N5773M Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-09-28 ValidFAA registration status code V: Valid registration. All codes
N5974U Piper
PA-28-140
Fixed-wing, single engine W8S Enterprises LLC
Stillwater, Oklahoma
Standard 2024-09-28 ValidFAA registration status code V: Valid registration. All codes
N75149 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-09-28 ValidFAA registration status code V: Valid registration. All codes
N1097T Piper
PA-28-140
Fixed-wing, single engine Horizon Aviation LLC
Brooks, Georgia
Standard 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N12795 Cessna
172M
Fixed-wing, single engine Rl Aviation LLC
Miami, Florida
Multiple 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N12GL Reeves James I
GREAT LAKES 2T-1A
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N26323 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Peachtree Builders LLC
Waterford, New York
Standard 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N3061Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N3465T Cessna
177
Fixed-wing, single engine Individual owner
Texas
Standard 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N3985P Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Georgia
Restricted 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N56487 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N5914U Piper
PA-28-140
Fixed-wing, single engine Shawver Aviation LLC
Knoxville, Iowa
Standard 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N6760W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N726DF Piper
PA-28-161
Fixed-wing, single engine Tactical Aviation LLC
Brownstown, Michigan
Standard 2024-09-27 ValidFAA registration status code V: Valid registration. All codes
N13283 Cessna
172M
Fixed-wing, single engine N13283 LLC
Greenville, South Carolina
Standard 2024-09-26 ValidFAA registration status code V: Valid registration. All codes
N214SA Piper
PA-28-151
Fixed-wing, single engine Individual owner
Kentucky
Standard 2024-09-26 ValidFAA registration status code V: Valid registration. All codes
N33432 Piper
PA-28-140
Fixed-wing, single engine Atmospheric Vehicle & Spacecraft Flt Exploration
Rch Palos Vrd, California
Standard 2024-09-26 ValidFAA registration status code V: Valid registration. All codes
N379PF Cessna
150J
Fixed-wing, single engine Withheld at owner's request
Standard 2024-09-26 ValidFAA registration status code V: Valid registration. All codes
N43241 Piper
PA-28-140
Fixed-wing, single engine Atmospheric Vehicle & Spacecraft Flight Exploratio
Rch Palos Vrd, California
Standard 2024-09-26 ValidFAA registration status code V: Valid registration. All codes
N8756M Beech
23
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-09-26 ValidFAA registration status code V: Valid registration. All codes
N91248 Piper
PA-18-150
Fixed-wing, single engine Fly8Ma LLC
Big Lake, Alaska
Standard 2024-09-26 ValidFAA registration status code V: Valid registration. All codes
N1778Y Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2024-09-25 ValidFAA registration status code V: Valid registration. All codes
N3681N Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-09-25 ValidFAA registration status code V: Valid registration. All codes
N4946T Piper
PA-28-140
Fixed-wing, single engine Elite Fleet Jacksonville LLC
Jacksonville, Florida
Standard 2024-09-25 ValidFAA registration status code V: Valid registration. All codes
N54346 Cessna
172P
Fixed-wing, single engine Aviation Trust Company LLC Trustee
Oklahoma City, Oklahoma
Standard 2024-09-25 ValidFAA registration status code V: Valid registration. All codes
N6033W Piper
PA-28-140
Fixed-wing, single engine Green Apple Solutions LLC
Durham, North Carolina
Standard 2024-09-25 ValidFAA registration status code V: Valid registration. All codes
N734MW Cessna
172N
Fixed-wing, single engine Flying Holm LLC
Phoenix, Arizona
Standard 2024-09-25 ValidFAA registration status code V: Valid registration. All codes
N79137 Cessna
172K
Fixed-wing, single engine Co-owned owner
California
Standard 2024-09-25 ValidFAA registration status code V: Valid registration. All codes
N9225C Piper
PA-28-161
Fixed-wing, single engine Meriden Aviation Center LLC
Meriden, Connecticut
Standard 2024-09-25 ValidFAA registration status code V: Valid registration. All codes
N951AC Cotyk Andrew L
RV-9A
Fixed-wing, single engine Individual owner
Michigan
Experimental 2024-09-25 ValidFAA registration status code V: Valid registration. All codes
N51BB Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
New York
Standard 2024-09-24 ValidFAA registration status code V: Valid registration. All codes
N722MC Robinson Helicopter
R22 BETA
Helicopter Classic Banjo LLC
Richmond, Kentucky
Standard 2024-09-24 ValidFAA registration status code V: Valid registration. All codes
N734BX Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-09-24 ValidFAA registration status code V: Valid registration. All codes
N79950 Cessna
172K
Fixed-wing, single engine Individual owner
Missouri
Standard 2024-09-24 ValidFAA registration status code V: Valid registration. All codes
N905DW Wert Donald L
RV6A
Fixed-wing, single engine Due South LLC
Wilmington, Delaware
Experimental 2024-09-24 ValidFAA registration status code V: Valid registration. All codes
N1098M Cessna
172L
Fixed-wing, single engine Individual owner
Kansas
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N20365 Cessna
172M
Fixed-wing, single engine Atlas Aero Training LLC
Casper, Wyoming
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N2546U Piper
PA-28-161
Fixed-wing, single engine L00 Fliers LLC
Lewes, Delaware
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N3924Q Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N5536W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Nebraska
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N554FL Piper
PA-28-140
Fixed-wing, single engine Tomenyaero INC
Florence, Oregon
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N6161V Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N642SB Burwell Stephen R
BURWELL RV6
Fixed-wing, single engine Individual owner
Massachusetts
Experimental 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N6827W Piper
PA-28-140
Fixed-wing, single engine Short Final Aviation LLC
Branson, Missouri
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N8297N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N4815C Cessna
172P
Fixed-wing, single engine St Pete Aviation Services LLC
Saint Petersburg, Florida
Standard 2024-09-21 ValidFAA registration status code V: Valid registration. All codes
N5408R Cessna
172M
Fixed-wing, single engine 08R Leasing LLC
Englewood, Colorado
Standard 2024-09-21 ValidFAA registration status code V: Valid registration. All codes
N55656 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nebraska
Standard 2024-09-21 ValidFAA registration status code V: Valid registration. All codes
N78760 Cessna
172K
Fixed-wing, single engine Co-owned owner
Utah
Standard 2024-09-21 ValidFAA registration status code V: Valid registration. All codes
N8789D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alabama
Multiple 2024-09-21 ValidFAA registration status code V: Valid registration. All codes
N92447 Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2024-09-21 ValidFAA registration status code V: Valid registration. All codes
N98769 Cessna
172P
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2024-09-21 ValidFAA registration status code V: Valid registration. All codes
N99RU Brandt
PITTS SPECIAL S1C
Fixed-wing, single engine Bold Group LTD
Englewood, Colorado
Experimental 2024-09-21 ValidFAA registration status code V: Valid registration. All codes
N106TU Dakota Columbia Rentals Llc
RV-6A
Fixed-wing, single engine Individual owner
Arkansas
Experimental 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N2116F Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N2665Z Bellanca
7GCAA
Fixed-wing, single engine Withheld at owner's request
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N40230 Robinson Helicopter
R22 BETA
Helicopter Individual owner
Tennessee
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N44702 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N7019B Piper
PA-22-150
Fixed-wing, single engine Red Baron LLC
Middletown, Delaware
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N70411 Cessna
172M
Fixed-wing, single engine Charlie Lima 1 LLC
Jacksonville, Florida
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N8342H Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N92318 Cessna
172M
Fixed-wing, single engine Flitepro INC
Murrieta, California
Standard 2024-09-20 ValidFAA registration status code V: Valid registration. All codes
N2335P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N2421P Piper
PA-22
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N4292J Piper
PA-28-140
Fixed-wing, single engine Reds Aircraft LLC
Edinburg, Texas
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N429DR Rupp Dale O
RUPP/VANS RV-6
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N4978G Cessna
172N
Fixed-wing, single engine Jin Jin Aviation LLC
Anchorage, Alaska
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N54983 Cessna
172P
Fixed-wing, single engine Jin Jin Aviation LLC
Anchorage, Alaska
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
N6117W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2024-09-19 ValidFAA registration status code V: Valid registration. All codes
Previous Page 41 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.