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
N3359T Cessna
177
Fixed-wing, single engine Individual owner
Arizona
Standard 2018-11-07 ValidFAA registration status code V: Valid registration. All codes
N7326F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-11-07 ValidFAA registration status code V: Valid registration. All codes
N31KF Mcfee Don
ELITE
Fixed-wing, single engine Co-owned owner
Washington
Experimental 2018-11-06 ValidFAA registration status code V: Valid registration. All codes
N41548 Piper
PA-28-151
Fixed-wing, single engine Ravotti Air LLC
Leechburg, Pennsylvania
Standard 2018-11-06 ValidFAA registration status code V: Valid registration. All codes
N5435H Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2018-11-06 ValidFAA registration status code V: Valid registration. All codes
N5816U Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2018-11-06 ValidFAA registration status code V: Valid registration. All codes
N65021 Cessna
172P
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2018-11-06 ValidFAA registration status code V: Valid registration. All codes
N75925 Cessna
172N
Fixed-wing, single engine A&A Aviation LLC
Edinburgh, Indiana
Standard 2018-11-06 ValidFAA registration status code V: Valid registration. All codes
N785RM Piper
PA-28-161
Fixed-wing, single engine Jesnet Aviation LLC
Sanford, Florida
Standard 2018-11-06 ValidFAA registration status code V: Valid registration. All codes
N13753 Cessna
172M
Fixed-wing, single engine Individual owner
North Carolina
Standard 2018-11-05 ValidFAA registration status code V: Valid registration. All codes
N55811 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2018-11-05 ValidFAA registration status code V: Valid registration. All codes
N83672 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2018-11-05 ValidFAA registration status code V: Valid registration. All codes
N85MD Delano Mark
RV6A
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2018-11-05 ValidFAA registration status code V: Valid registration. All codes
N3391E Cessna
172N
Fixed-wing, single engine Ocala Aviation Services INC
Ocala, Florida
Standard 2018-11-03 ValidFAA registration status code V: Valid registration. All codes
N4699R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wyoming
Standard 2018-11-03 ValidFAA registration status code V: Valid registration. All codes
N687SS Beech
B19
Fixed-wing, single engine Individual owner
Texas
Standard 2018-11-03 ValidFAA registration status code V: Valid registration. All codes
N733GT Cessna
172N
Fixed-wing, single engine Sanchez Demolition INC
Bosque, New Mexico
Standard 2018-11-03 ValidFAA registration status code V: Valid registration. All codes
N8196N Piper
PA-28-140
Fixed-wing, single engine Jensen Aviation LLC
Zephyrhills, Florida
Standard 2018-11-03 ValidFAA registration status code V: Valid registration. All codes
N84176 Piper
PA-28-161
Fixed-wing, single engine Brandywine Flight School
West Chester, Pennsylvania
Standard 2018-11-03 ValidFAA registration status code V: Valid registration. All codes
N8499L Cessna
172I
Fixed-wing, single engine Individual owner
Illinois
Standard 2018-11-03 ValidFAA registration status code V: Valid registration. All codes
N91823 Cessna
172M
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2018-11-03 ValidFAA registration status code V: Valid registration. All codes
N19687 Cessna
172L
Fixed-wing, single engine Dg Aviation LLC
Mechanicville, New York
Standard 2018-11-02 ValidFAA registration status code V: Valid registration. All codes
N3241T Cessna
177
Fixed-wing, single engine Individual owner
Illinois
Standard 2018-11-02 ValidFAA registration status code V: Valid registration. All codes
N40CM Van Grunsen Richard
RV-4
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2018-11-02 ValidFAA registration status code V: Valid registration. All codes
N5114T Champion
7GCBC
Fixed-wing, single engine Co-owned owner
Wyoming
Standard 2018-11-02 ValidFAA registration status code V: Valid registration. All codes
N81632 Mackey Alan T
RV4
Fixed-wing, single engine Individual owner
Florida
Experimental 2018-11-02 ValidFAA registration status code V: Valid registration. All codes
N9683P Piper
PA-18-150
Fixed-wing, single engine Warthog Flying Service INC
Stuttgart, Arkansas
Standard 2018-11-02 ValidFAA registration status code V: Valid registration. All codes
N9MY Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2018-11-02 ValidFAA registration status code V: Valid registration. All codes
N31AG Giorgi
PITTS S-1C
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2018-11-01 ValidFAA registration status code V: Valid registration. All codes
N3621K Kaercher James L
LONG-EZ
Fixed-wing, single engine Individual owner
Arizona
Experimental 2018-11-01 ValidFAA registration status code V: Valid registration. All codes
N8207N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2018-11-01 ValidFAA registration status code V: Valid registration. All codes
N9859W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2018-11-01 ValidFAA registration status code V: Valid registration. All codes
N363GC Comfort Gordon
RV-4
Fixed-wing, single engine Individual owner
Ohio
Experimental 2018-10-31 ValidFAA registration status code V: Valid registration. All codes
N1975F Cessna
172N
Fixed-wing, single engine Ward Gary T
Cincinnati, Ohio
Standard 2018-10-30 ValidFAA registration status code V: Valid registration. All codes
N4364P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2018-10-30 ValidFAA registration status code V: Valid registration. All codes
N47PG Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2018-10-30 ValidFAA registration status code V: Valid registration. All codes
N5085W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Texas
Standard 2018-10-30 ValidFAA registration status code V: Valid registration. All codes
N9895Q Cessna
172M
Fixed-wing, single engine Ck Leasing Services LLC
Wilmington, Delaware
Standard 2018-10-30 ValidFAA registration status code V: Valid registration. All codes
N13254 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2018-10-29 ValidFAA registration status code V: Valid registration. All codes
N3063P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Indiana
Standard 2018-10-29 ValidFAA registration status code V: Valid registration. All codes
N412FX Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Cougar Aircraft CORP
Cheyenne, Wyoming
Standard 2018-10-29 ValidFAA registration status code V: Valid registration. All codes
N5454K Cessna
172P
Fixed-wing, single engine Individual owner
Rhode Island
Standard 2018-10-29 ValidFAA registration status code V: Valid registration. All codes
N55256 Cessna
172P
Fixed-wing, single engine Notam Aviation LLC
Portage Des Sioux, Missouri
Standard 2018-10-29 ValidFAA registration status code V: Valid registration. All codes
N789RA Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2018-10-29 ValidFAA registration status code V: Valid registration. All codes
N9535W Piper
PA-28-140
Fixed-wing, single engine East Carolina Aviation LLC
Camden, North Carolina
Standard 2018-10-29 ValidFAA registration status code V: Valid registration. All codes
N1747J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2018-10-27 ValidFAA registration status code V: Valid registration. All codes
N20KB Bourkland-Basalay
MUSTANG II
Fixed-wing, single engine Individual owner
Illinois
Experimental 2018-10-27 ValidFAA registration status code V: Valid registration. All codes
N3715P Piper
PA-22-150
Fixed-wing, single engine Individual owner
New Mexico
Standard 2018-10-27 ValidFAA registration status code V: Valid registration. All codes
N3741Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2018-10-27 ValidFAA registration status code V: Valid registration. All codes
N41243 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alabama
Standard 2018-10-27 ValidFAA registration status code V: Valid registration. All codes
N63279 Cessna
172P
Fixed-wing, single engine P & H Air INC
Overland Park, Kansas
Standard 2018-10-27 ValidFAA registration status code V: Valid registration. All codes
N7563G Cessna
172L
Fixed-wing, single engine Oso Air LLC
Missoula, Montana
Standard 2018-10-26 ValidFAA registration status code V: Valid registration. All codes
N92236 Robinson Helicopter
R22
Helicopter Individual owner
Wisconsin
Restricted 2018-10-26 ValidFAA registration status code V: Valid registration. All codes
N143AM Holmes Gary Don
RUTAN LONG-EZ
Fixed-wing, single engine Individual owner
Nevada
Experimental 2018-10-25 ValidFAA registration status code V: Valid registration. All codes
N2991X Cessna
177
Fixed-wing, single engine Individual owner
Indiana
Standard 2018-10-25 ValidFAA registration status code V: Valid registration. All codes
N424AK Cushman David W
WAG-AERO SPRT TRNR
Fixed-wing, single engine Co-owned owner
Alaska
Experimental 2018-10-25 ValidFAA registration status code V: Valid registration. All codes
N1692G Champion
7GCBC
Fixed-wing, single engine Individual owner
Maine
Standard 2018-10-24 ValidFAA registration status code V: Valid registration. All codes
N20190 Cessna
172M
Fixed-wing, single engine Individual owner
Tennessee
Standard 2018-10-24 ValidFAA registration status code V: Valid registration. All codes
N2623B Blanc Donald R
GLASTAR KIT STD HMLT
Fixed-wing, single engine Individual owner
Alaska
Experimental 2018-10-24 ValidFAA registration status code V: Valid registration. All codes
N3569Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2018-10-24 ValidFAA registration status code V: Valid registration. All codes
N7183D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
South Dakota
Multiple 2018-10-24 ValidFAA registration status code V: Valid registration. All codes
N739ZH Cessna
172N
Fixed-wing, single engine Freeflight Aviation LLC
Allentown, New Jersey
Standard 2018-10-24 ValidFAA registration status code V: Valid registration. All codes
N26247 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Oregon
Standard 2018-10-22 ValidFAA registration status code V: Valid registration. All codes
N4328A Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2018-10-22 ValidFAA registration status code V: Valid registration. All codes
N4398A Piper
PA-18-150
Fixed-wing, single engine Iberlin Ranch
Gillette, Wyoming
Multiple 2018-10-22 ValidFAA registration status code V: Valid registration. All codes
N6017W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2018-10-22 ValidFAA registration status code V: Valid registration. All codes
N2612Z Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Minnesota
Standard 2018-10-19 ValidFAA registration status code V: Valid registration. All codes
N79310 Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2018-10-19 ValidFAA registration status code V: Valid registration. All codes
N8427R Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2018-10-19 ValidFAA registration status code V: Valid registration. All codes
N14LD Piper
PA-18-150
Fixed-wing, single engine Copper Mountain Aviation LLC
Port Alsworth, Alaska
Standard 2018-10-18 ValidFAA registration status code V: Valid registration. All codes
N61701 Cessna
172M
Fixed-wing, single engine Jls Aviation LLC DBA
Fredericksburg, Virginia
Standard 2018-10-18 ValidFAA registration status code V: Valid registration. All codes
N7391K Piper
PA-20
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-10-18 ValidFAA registration status code V: Valid registration. All codes
N1710T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2018-10-17 ValidFAA registration status code V: Valid registration. All codes
N2337Q Beech
23
Fixed-wing, single engine Individual owner
Texas
Standard 2018-10-17 ValidFAA registration status code V: Valid registration. All codes
N92888 Cessna
172M
Fixed-wing, single engine Individual owner
Nebraska
Standard 2018-10-17 ValidFAA registration status code V: Valid registration. All codes
N14167 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2018-10-16 ValidFAA registration status code V: Valid registration. All codes
N175KA Cessna
172M
Fixed-wing, single engine Air Cruiser LLC
New York, New York
Standard 2018-10-16 ValidFAA registration status code V: Valid registration. All codes
N20834 Cessna
172M
Fixed-wing, single engine Climb Maintain LLC
Morrisville, Missouri
Standard 2018-10-16 ValidFAA registration status code V: Valid registration. All codes
N4370X Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2018-10-16 ValidFAA registration status code V: Valid registration. All codes
N6035Z Piper
PA-25
Fixed-wing, single engine Aerial Banners INC
Pembroke Pines, Florida
Restricted 2018-10-16 ValidFAA registration status code V: Valid registration. All codes
N1302U Cessna
172M
Fixed-wing, single engine Training Planes LLC
Tampa, Florida
Standard 2018-10-15 ValidFAA registration status code V: Valid registration. All codes
N21126 Cessna
172M
Fixed-wing, single engine Aviation Academy LLC
Wichita, Kansas
Standard 2018-10-15 ValidFAA registration status code V: Valid registration. All codes
N3911Q Cessna
172L
Fixed-wing, single engine Training Planes LLC
Tampa, Florida
Standard 2018-10-15 ValidFAA registration status code V: Valid registration. All codes
N460LZ Olesen Sheldon
LONG-EZ
Fixed-wing, single engine Individual owner
Alaska
Experimental 2018-10-15 ValidFAA registration status code V: Valid registration. All codes
N4568R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Michigan
Standard 2018-10-12 ValidFAA registration status code V: Valid registration. All codes
N78805 Cessna
172K
Fixed-wing, single engine Individual owner
North Dakota
Standard 2018-10-12 ValidFAA registration status code V: Valid registration. All codes
N5434E Cessna
172N
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2018-10-11 ValidFAA registration status code V: Valid registration. All codes
N57DF Dennis Flamini
ACROSPORT 2
Fixed-wing, single engine F3 Aero LLC
New Lenox, Illinois
Experimental 2018-10-11 ValidFAA registration status code V: Valid registration. All codes
N7160Q Cessna
172L
Fixed-wing, single engine Phoenix Aviation LLC
Meridian, Idaho
Standard 2018-10-11 ValidFAA registration status code V: Valid registration. All codes
N12331 Cessna
172M
Fixed-wing, single engine N Conti INC
Boyertown, Pennsylvania
Standard 2018-10-09 ValidFAA registration status code V: Valid registration. All codes
N267AG Piper
PA-28-140
Fixed-wing, single engine Simply Living LLC
Fort Myers, Florida
Standard 2018-10-09 ValidFAA registration status code V: Valid registration. All codes
N8293N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-10-09 ValidFAA registration status code V: Valid registration. All codes
N1967U Cessna
172K
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-10-05 ValidFAA registration status code V: Valid registration. All codes
N26939 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2018-10-05 ValidFAA registration status code V: Valid registration. All codes
N4489Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-10-05 ValidFAA registration status code V: Valid registration. All codes
N1833J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2018-10-04 ValidFAA registration status code V: Valid registration. All codes
N2570U Piper
PA-28-161
Fixed-wing, single engine Jla Aero LLC
State College, Pennsylvania
Standard 2018-10-04 ValidFAA registration status code V: Valid registration. All codes
N5059W Piper
PA-28
Fixed-wing, single engine Individual owner
Florida
Standard 2018-10-04 ValidFAA registration status code V: Valid registration. All codes
N12330 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2018-10-03 ValidFAA registration status code V: Valid registration. All codes
N1423U Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2018-10-03 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.