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
N2233B Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
California
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N282L Beech
B19
Fixed-wing, single engine Buccaneer LLC
Naperville, Illinois
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N2981P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N46418 Cessna
172K
Fixed-wing, single engine Batesquire LLC
Clanton, Alabama
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N51221 Cessna
172M
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N7010Q Cessna
172L
Fixed-wing, single engine Individual owner
Idaho
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N734TS Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N82063 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N9027H Cessna
172M
Fixed-wing, single engine Adriatic Holdings LLC
Cheyenne, Wyoming
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N9218R Piper
PA-28-161
Fixed-wing, single engine Fishe Flying CORP
Vero Beach, Florida
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N9269H Cessna
172M
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N1529J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2022-04-19 ValidFAA registration status code V: Valid registration. All codes
N1852P Piper
PA-18A
Fixed-wing, single engine Individual owner
Texas
Multiple 2022-04-19 ValidFAA registration status code V: Valid registration. All codes
N33318 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-04-19 ValidFAA registration status code V: Valid registration. All codes
N4303J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2022-04-19 ValidFAA registration status code V: Valid registration. All codes
N4695R Piper
PA-28-140
Fixed-wing, single engine Destination Flyer LLC
Memphis, Tennessee
Standard 2022-04-19 ValidFAA registration status code V: Valid registration. All codes
N96911 Cessna
172P
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-04-19 ValidFAA registration status code V: Valid registration. All codes
N154ER Piper
PA-28-161
Fixed-wing, single engine N154Er LLC
Kissimmee, Florida
Standard 2022-04-18 ValidFAA registration status code V: Valid registration. All codes
N2277D Piper
PA-28-140
Fixed-wing, single engine Taking Flight LLC
Saint Augustine, Florida
Standard 2022-04-18 ValidFAA registration status code V: Valid registration. All codes
N439DJ Schneider David J Jr
PAZMANY PL-2
Fixed-wing, single engine Individual owner
Washington
Experimental 2022-04-18 ValidFAA registration status code V: Valid registration. All codes
N6079W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-04-18 ValidFAA registration status code V: Valid registration. All codes
N78253 Cessna
172K
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2022-04-18 ValidFAA registration status code V: Valid registration. All codes
N42787 Piper
PA-28-151
Fixed-wing, single engine Macair Aviation LLC
Xenia, Ohio
Standard 2022-04-16 ValidFAA registration status code V: Valid registration. All codes
N5682W Piper
PA-28-160
Fixed-wing, single engine Riggin Flight Service INC
Madison, South Dakota
Standard 2022-04-16 ValidFAA registration status code V: Valid registration. All codes
N5733U Piper
PA-28-140
Fixed-wing, single engine Berkshire Aviation Enterprises LLC
Great Barrington, Massachusetts
Standard 2022-04-16 ValidFAA registration status code V: Valid registration. All codes
N9358E Cessna
172N
Fixed-wing, single engine Individual owner
New York
Standard 2022-04-16 ValidFAA registration status code V: Valid registration. All codes
N12477 Cessna
172M
Fixed-wing, single engine South Mountain Flying Club INC
Pittsfield, Massachusetts
Standard 2022-04-15 ValidFAA registration status code V: Valid registration. All codes
N44669 Piper
PA-28-151
Fixed-wing, single engine Plane Training LLC
Rapid City, South Dakota
Standard 2022-04-15 ValidFAA registration status code V: Valid registration. All codes
N79529 Cessna
172K
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-04-15 ValidFAA registration status code V: Valid registration. All codes
N9573L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
California
Standard 2022-04-15 ValidFAA registration status code V: Valid registration. All codes
N159DW Wilcoxon Duane E
S1C PITTS
Fixed-wing, single engine Individual owner
Washington
Experimental 2022-04-14 ValidFAA registration status code V: Valid registration. All codes
N32838 Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2022-04-14 ValidFAA registration status code V: Valid registration. All codes
N5278D Cessna
172N
Fixed-wing, single engine N5278D LLC
Dover, Delaware
Standard 2022-04-14 ValidFAA registration status code V: Valid registration. All codes
N13320 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2022-04-12 ValidFAA registration status code V: Valid registration. All codes
N2356Y Robinson Helicopter
R22 BETA
Helicopter Individual owner
Alabama
Standard 2022-04-12 ValidFAA registration status code V: Valid registration. All codes
N1251T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
New Jersey
Standard 2022-04-11 ValidFAA registration status code V: Valid registration. All codes
N126KP Shiner Burton S
RV-3
Fixed-wing, single engine Individual owner
Oregon
Experimental 2022-04-11 ValidFAA registration status code V: Valid registration. All codes
N1E Cessna
172M
Fixed-wing, single engine Handschiegel Robert J
Hampshire, Illinois
Standard 2022-04-09 ValidFAA registration status code V: Valid registration. All codes
N2226Y Cessna
177
Fixed-wing, single engine Individual owner
Louisiana
Standard 2022-04-09 ValidFAA registration status code V: Valid registration. All codes
N3060Y Piper
PA-28-161
Fixed-wing, single engine B&D Flight Club LLC
Portage, Indiana
Standard 2022-04-09 ValidFAA registration status code V: Valid registration. All codes
N3647K Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Dakota
Standard 2022-04-09 ValidFAA registration status code V: Valid registration. All codes
N4355Q Cessna
172L
Fixed-wing, single engine Individual owner
Idaho
Standard 2022-04-09 ValidFAA registration status code V: Valid registration. All codes
N48PK Quenzler P W/Frey K H
GLASTAR
Fixed-wing, single engine Individual owner
Utah
Experimental 2022-04-09 ValidFAA registration status code V: Valid registration. All codes
N6551L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
New Mexico
Standard 2022-04-09 ValidFAA registration status code V: Valid registration. All codes
N66038 Cessna
172P
Fixed-wing, single engine Individual owner
Texas
Standard 2022-04-09 ValidFAA registration status code V: Valid registration. All codes
N1801J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Colorado
Standard 2022-04-08 ValidFAA registration status code V: Valid registration. All codes
N6727J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2022-04-08 ValidFAA registration status code V: Valid registration. All codes
N7213D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-04-08 ValidFAA registration status code V: Valid registration. All codes
N22HT Robinson Helicopter
R22 BETA
Helicopter Individual owner
Alaska
Standard 2022-04-07 ValidFAA registration status code V: Valid registration. All codes
N5365W Piper
PA-28
Fixed-wing, single engine Individual owner
Florida
Standard 2022-04-07 ValidFAA registration status code V: Valid registration. All codes
N70BZ Gardner William R
THORP T-18
Fixed-wing, single engine Co-owned owner
Illinois
Experimental 2022-04-07 ValidFAA registration status code V: Valid registration. All codes
N738NC Cessna
172N
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2022-04-07 ValidFAA registration status code V: Valid registration. All codes
N83177 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Washington
Standard 2022-04-07 ValidFAA registration status code V: Valid registration. All codes
N13902 Cessna
172M
Fixed-wing, single engine Individual owner
South Carolina
Standard 2022-04-06 ValidFAA registration status code V: Valid registration. All codes
N3958K Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-04-06 ValidFAA registration status code V: Valid registration. All codes
N6076D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Connecticut
Standard 2022-04-06 ValidFAA registration status code V: Valid registration. All codes
N2273F Piper
PA-28-140
Fixed-wing, single engine Cascade Aviation LLC
Burlington, Washington
Standard 2022-04-05 ValidFAA registration status code V: Valid registration. All codes
N3177P Piper
PA-23-150
Fixed-wing, multi-engine Qualitair LLC Trustee
Michelstadt,
Standard 2022-04-05 ValidFAA registration status code V: Valid registration. All codes
N5093S Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-04-05 ValidFAA registration status code V: Valid registration. All codes
N733DZ Cessna
172N
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2022-04-05 ValidFAA registration status code V: Valid registration. All codes
N8436T Piper
PA-28-161
Fixed-wing, single engine Elias Akal Aviation LLC
Deering, New Hampshire
Standard 2022-04-05 ValidFAA registration status code V: Valid registration. All codes
N5700W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Alabama
Standard 2022-04-04 ValidFAA registration status code V: Valid registration. All codes
N8283J Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2022-04-04 ValidFAA registration status code V: Valid registration. All codes
N139ER Cessna
172P
Fixed-wing, single engine Rick Aviation INC
Newport News, Virginia
Standard 2022-04-02 ValidFAA registration status code V: Valid registration. All codes
N15388 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-04-02 ValidFAA registration status code V: Valid registration. All codes
N4071E Piper
PA-18-150
Fixed-wing, single engine Legends Airways LLC
Lakeland, Florida
Standard 2022-04-02 ValidFAA registration status code V: Valid registration. All codes
N7375D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-04-02 ValidFAA registration status code V: Valid registration. All codes
N1680A Piper
PA-20
Fixed-wing, single engine Individual owner
Colorado
Standard 2022-04-01 ValidFAA registration status code V: Valid registration. All codes
N1931W Beech
B19
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-04-01 ValidFAA registration status code V: Valid registration. All codes
N9671P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2022-04-01 ValidFAA registration status code V: Valid registration. All codes
N2332E Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N2375M Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N26124 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Minnesota
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N4835G Cessna
172N
Fixed-wing, single engine Fiedler Aviation LLC
Suffolk, Virginia
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N5212K Cessna
172P
Fixed-wing, single engine New England Aviation LLC
Plainville, Connecticut
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N5298D Cessna
172N
Fixed-wing, single engine Morcom Aviation Services INC DBA
Everett, Washington
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N7266D Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N739ZU Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N75938 Cessna
172N
Fixed-wing, single engine Fiedler Aviation LLC
Suffolk, Virginia
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N80874 Cessna
172M
Fixed-wing, single engine Jls Aviation LLC
Fredericksburg, Virginia
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N84093 Cessna
172K
Fixed-wing, single engine Individual owner
Iowa
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N8455L Cessna
172I
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N9512S Champion
7GCBA
Fixed-wing, single engine Black Daniel L
Spicewood, Texas
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N9676P Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Montana
Restricted 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N12749 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N1854V Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N57649 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Colorado
Standard 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N6107D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N626DC Piper
PA-18-150
Fixed-wing, single engine Flying for Conservation LLC
Juda, Wisconsin
Restricted 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N7067G Cessna
172K
Fixed-wing, single engine Individual owner
Louisiana
Standard 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N738HT Cessna
172N
Fixed-wing, single engine Co-owned owner
Florida
Standard 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N75021 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N765R Rivet Richard E
COZY III
Fixed-wing, single engine Individual owner
Ohio
Experimental 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N779LK Piper
PA-28-140
Fixed-wing, single engine Atmospheric Vehicle & Spacecraft Flt Exploration
Rch Palos Vrd, California
Standard 2022-03-30 ValidFAA registration status code V: Valid registration. All codes
N476RB Blaise Richard
THORP T-18
Fixed-wing, single engine Individual owner
New Mexico
Experimental 2022-03-29 ValidFAA registration status code V: Valid registration. All codes
N4881A Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-03-29 ValidFAA registration status code V: Valid registration. All codes
N5272R Cessna
172M
Fixed-wing, single engine Richmond Pilots CORP
Linden, New Jersey
Standard 2022-03-29 ValidFAA registration status code V: Valid registration. All codes
N6372D Cessna
172N
Fixed-wing, single engine Hofmann LLC
Blauvelt, New York
Standard 2022-03-29 ValidFAA registration status code V: Valid registration. All codes
N734FR Cessna
172N
Fixed-wing, single engine Co-owned owner
Florida
Standard 2022-03-29 ValidFAA registration status code V: Valid registration. All codes
N739RG Cessna
172N
Fixed-wing, single engine Prairie Wings LLC
Omaha, Nebraska
Standard 2022-03-29 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.