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
N52AT Interstate
S-1B2
Fixed-wing, single engine Individual owner
Alaska
Standard 2014-06-09 ValidFAA registration status code V: Valid registration. All codes
N728KG Cessna
172N
Fixed-wing, single engine Capsed LLC
Mojave, California
Standard 2014-06-09 ValidFAA registration status code V: Valid registration. All codes
N80333 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2014-06-09 ValidFAA registration status code V: Valid registration. All codes
N9825G Cessna
172L
Fixed-wing, single engine Kanawha Aviators LLC
Bancroft, West Virginia
Standard 2014-06-09 ValidFAA registration status code V: Valid registration. All codes
N2144W Piper
PA-28-161
Fixed-wing, single engine Individual owner
Iowa
Standard 2014-06-06 ValidFAA registration status code V: Valid registration. All codes
N5232W Piper
PA-28
Fixed-wing, single engine Individual owner
North Dakota
Standard 2014-06-06 ValidFAA registration status code V: Valid registration. All codes
N20029 Cessna
172M
Fixed-wing, single engine Individual owner
Minnesota
Standard 2014-06-05 ValidFAA registration status code V: Valid registration. All codes
N41785 Piper
PA-28-151
Fixed-wing, single engine On the Ball Aviation LLC
Sloughhouse, California
Standard 2014-06-05 ValidFAA registration status code V: Valid registration. All codes
N4238Q Cessna
172L
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2014-06-05 ValidFAA registration status code V: Valid registration. All codes
N51RB Baumert
CHARGER MA-5
Fixed-wing, single engine Individual owner
Colorado
Experimental 2014-06-05 ValidFAA registration status code V: Valid registration. All codes
N80342 Cessna
172M
Fixed-wing, single engine Spanaflight LLC
Puyallup, Washington
Standard 2014-06-05 ValidFAA registration status code V: Valid registration. All codes
N1805J Piper
PA-28-140
Fixed-wing, single engine Zero Five J Company INC
Orlando, Florida
Standard 2014-06-04 ValidFAA registration status code V: Valid registration. All codes
N5131X Champion
7GCAA
Fixed-wing, single engine Individual owner
Nevada
Standard 2014-06-04 ValidFAA registration status code V: Valid registration. All codes
N64079 Cessna
172P
Fixed-wing, single engine Portneuf Holdings LLC
Chubbuck, Idaho
Standard 2014-06-04 ValidFAA registration status code V: Valid registration. All codes
N737LY Cessna
172N
Fixed-wing, single engine N8074E LLC
Jackson, New Jersey
Standard 2014-06-04 ValidFAA registration status code V: Valid registration. All codes
N9623W Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2014-06-04 ValidFAA registration status code V: Valid registration. All codes
N9946Q Cessna
172M
Fixed-wing, single engine Horizon Aviation LLC
Sinclair, Maine
Standard 2014-06-04 ValidFAA registration status code V: Valid registration. All codes
N1748T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2014-06-03 ValidFAA registration status code V: Valid registration. All codes
N62660 Cessna
172P
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2014-06-03 ValidFAA registration status code V: Valid registration. All codes
N271J Greene Jay R
LONG EZ
Fixed-wing, single engine Individual owner
California
Experimental 2014-06-02 ValidFAA registration status code V: Valid registration. All codes
N4214Q Cessna
172L
Fixed-wing, single engine Mms Aircraft Leasing LLC
Williamsburg, Virginia
Standard 2014-06-02 ValidFAA registration status code V: Valid registration. All codes
N5995U Piper
PA-28-140
Fixed-wing, single engine Sharp Aircraft LLC
Mcminnville, Tennessee
Standard 2014-06-02 ValidFAA registration status code V: Valid registration. All codes
N118PB Scott A Markie
JUNK YARD DOG
Fixed-wing, single engine Individual owner
Maine
Experimental 2014-05-31 ValidFAA registration status code V: Valid registration. All codes
N20940 Cessna
172M
Fixed-wing, single engine Cirrus Flight Operations INC
Minneapolis, Minnesota
Standard 2014-05-30 ValidFAA registration status code V: Valid registration. All codes
N2849Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2014-05-30 ValidFAA registration status code V: Valid registration. All codes
N63483 Cessna
172P
Fixed-wing, single engine Eagle Sky Patrol INC
Deadwood, South Dakota
Standard 2014-05-30 ValidFAA registration status code V: Valid registration. All codes
N7051Q Cessna
172L
Fixed-wing, single engine Bright Flight Aviation INC
Jacksonville, Florida
Standard 2014-05-30 ValidFAA registration status code V: Valid registration. All codes
N75093 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nebraska
Standard 2014-05-30 ValidFAA registration status code V: Valid registration. All codes
N7566R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2014-05-30 ValidFAA registration status code V: Valid registration. All codes
N241KC Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2014-05-29 ValidFAA registration status code V: Valid registration. All codes
N40SP Cessna
172P
Fixed-wing, single engine Individual owner
Ohio
Standard 2014-05-29 ValidFAA registration status code V: Valid registration. All codes
N158PT Piper
PA-28-161
Fixed-wing, single engine Pilot Training Center LLC
Miami, Florida
Standard 2014-05-28 ValidFAA registration status code V: Valid registration. All codes
N1739J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2014-05-28 ValidFAA registration status code V: Valid registration. All codes
N2299P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Texas
Standard 2014-05-28 ValidFAA registration status code V: Valid registration. All codes
N2619P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2014-05-28 ValidFAA registration status code V: Valid registration. All codes
N3147Z Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2014-05-28 ValidFAA registration status code V: Valid registration. All codes
N32177 Piper
PA-28-140
Fixed-wing, single engine Ace Aircraft Leasing INC
Nazareth, Pennsylvania
Standard 2014-05-28 ValidFAA registration status code V: Valid registration. All codes
N4682D Cessna
172N
Fixed-wing, single engine Individual owner
New Jersey
Standard 2014-05-28 ValidFAA registration status code V: Valid registration. All codes
N5914V Piper
PA-28-161
Fixed-wing, single engine Luvsflying Flight Training LLC
Staten Island, New York
Standard 2014-05-28 ValidFAA registration status code V: Valid registration. All codes
N8653Y Piper
PA-18-150
Fixed-wing, single engine Morris Equipment LLC
Yuma, Arizona
Standard 2014-05-28 ValidFAA registration status code V: Valid registration. All codes
N95423 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2014-05-28 ValidFAA registration status code V: Valid registration. All codes
N2271E Cessna
172N
Fixed-wing, single engine Individual owner
U.S. Virgin Islands
Standard 2014-05-27 ValidFAA registration status code V: Valid registration. All codes
N54TL Long Tony
KELLY-D BI PLANE
Fixed-wing, single engine Individual owner
Oregon
Experimental 2014-05-27 ValidFAA registration status code V: Valid registration. All codes
N5787B Acorn David S
VANS RV-9A
Fixed-wing, single engine Individual owner
Florida
Experimental 2014-05-27 ValidFAA registration status code V: Valid registration. All codes
N13465 Cessna
172M
Fixed-wing, single engine Mach III Flying INC
Platte City, Missouri
Standard 2014-05-23 ValidFAA registration status code V: Valid registration. All codes
N141KR Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2014-05-23 ValidFAA registration status code V: Valid registration. All codes
N397LJ Piper
PA-18-150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2014-05-23 ValidFAA registration status code V: Valid registration. All codes
N5285K Cessna
172P
Fixed-wing, single engine Individual owner
Alaska
Standard 2014-05-23 ValidFAA registration status code V: Valid registration. All codes
N630TC Cessna
172M
Fixed-wing, single engine N630Tc LLC
Nashville, Tennessee
Standard 2014-05-23 ValidFAA registration status code V: Valid registration. All codes
N3670Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
North Dakota
Standard 2014-05-22 ValidFAA registration status code V: Valid registration. All codes
N5452K Cessna
172P
Fixed-wing, single engine Aviation Club LLC
Sussex, New Jersey
Standard 2014-05-22 ValidFAA registration status code V: Valid registration. All codes
N8697V Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
California
Standard 2014-05-22 ValidFAA registration status code V: Valid registration. All codes
N1134P Piper
PA-23
Fixed-wing, multi-engine Sutton Aircraft Salvage LLC
Palmer, Alaska
Standard 2014-05-21 ValidFAA registration status code V: Valid registration. All codes
N3366 Piper
PA-23-160
Fixed-wing, multi-engine Sutton Aircraft Salvage LLC
Palmer, Alaska
Standard 2014-05-21 ValidFAA registration status code V: Valid registration. All codes
N725GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Co-owned owner
New Jersey
Standard 2014-05-21 ValidFAA registration status code V: Valid registration. All codes
N8519Y Piper
PA-18-150
Fixed-wing, single engine Aerial Sign North INC
Lakewood, New Jersey
Standard 2014-05-21 ValidFAA registration status code V: Valid registration. All codes
N9411D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
California
Experimental 2014-05-21 ValidFAA registration status code V: Valid registration. All codes
N20465 Cessna
172M
Fixed-wing, single engine C Flyers INC
Dyersville, Iowa
Standard 2014-05-20 ValidFAA registration status code V: Valid registration. All codes
N3696Z Piper
PA-18
Fixed-wing, single engine Individual owner
Maine
Restricted 2014-05-20 ValidFAA registration status code V: Valid registration. All codes
N4891J Cessna
172N
Fixed-wing, single engine Harris Aircraft Leasing CO
Oklahoma City, Oklahoma
Standard 2014-05-20 ValidFAA registration status code V: Valid registration. All codes
N5YX Cessna
172P
Fixed-wing, single engine Red Arrow Aviation LLC
Santa Teresa, New Mexico
Standard 2014-05-20 ValidFAA registration status code V: Valid registration. All codes
N269DB Beifus Carl A
RV-6A
Fixed-wing, single engine Individual owner
Louisiana
Experimental 2014-05-19 ValidFAA registration status code V: Valid registration. All codes
N3201Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2014-05-19 ValidFAA registration status code V: Valid registration. All codes
N64056 Cessna
172P
Fixed-wing, single engine Angel Aviation INC
Peoria, Arizona
Standard 2014-05-19 ValidFAA registration status code V: Valid registration. All codes
N9448P Piper
PA-18-150
Fixed-wing, single engine Mgh INC
Aurora, Nebraska
Restricted 2014-05-19 ValidFAA registration status code V: Valid registration. All codes
N95203 Piper
PA-28-140
Fixed-wing, single engine Neptune Aviation Services INC DBA
Missoula, Montana
Standard 2014-05-19 ValidFAA registration status code V: Valid registration. All codes
N9728D Piper
PA-22-160
Fixed-wing, single engine Grizzly Skins of Alaska INC
Wasilla, Alaska
Standard 2014-05-19 ValidFAA registration status code V: Valid registration. All codes
N281CF Piper
PA-28-161
Fixed-wing, single engine Charlie Foxtrot CORP
Colleyville, Texas
Standard 2014-05-16 ValidFAA registration status code V: Valid registration. All codes
N781JB Beech
19A
Fixed-wing, single engine Individual owner
California
Standard 2014-05-16 ValidFAA registration status code V: Valid registration. All codes
N83347 Piper
PA-18-150
Fixed-wing, single engine Farrier Ken J
Torrington, Wyoming
Standard 2014-05-16 ValidFAA registration status code V: Valid registration. All codes
N2865Q Cessna
172L
Fixed-wing, single engine Individual owner
New York
Standard 2014-05-15 ValidFAA registration status code V: Valid registration. All codes
N73149 Cessna
172M
Fixed-wing, single engine Good Flight Aviation LLC
Stockton, California
Standard 2014-05-15 ValidFAA registration status code V: Valid registration. All codes
N733PY Cessna
172N
Fixed-wing, single engine Rsa Flight Training LLC
Morgantown, West Virginia
Multiple 2014-05-15 ValidFAA registration status code V: Valid registration. All codes
N7371D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2014-05-15 ValidFAA registration status code V: Valid registration. All codes
N80238 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2014-05-15 ValidFAA registration status code V: Valid registration. All codes
N20405 Cessna
172M
Fixed-wing, single engine Buffalo Wings LLC
Overland Park, Kansas
Standard 2014-05-14 ValidFAA registration status code V: Valid registration. All codes
N4007Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Missouri
Restricted 2014-05-14 ValidFAA registration status code V: Valid registration. All codes
N46729 Cessna
172K
Fixed-wing, single engine Individual owner
New York
Standard 2014-05-14 ValidFAA registration status code V: Valid registration. All codes
N6732J Piper
PA-28-140
Fixed-wing, single engine School of Missionary Aviation Technology
Ionia, Michigan
Standard 2014-05-14 ValidFAA registration status code V: Valid registration. All codes
N734VT Cessna
172N
Fixed-wing, single engine Destination Aviation LLC
Destin, Florida
Standard 2014-05-14 ValidFAA registration status code V: Valid registration. All codes
N79546 Cessna
172K
Fixed-wing, single engine Individual owner
Ohio
Standard 2014-05-14 ValidFAA registration status code V: Valid registration. All codes
N8198N Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2014-05-14 ValidFAA registration status code V: Valid registration. All codes
N3015Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2014-05-13 ValidFAA registration status code V: Valid registration. All codes
N454BM Cessna
172M
Fixed-wing, single engine Individual owner
Illinois
Standard 2014-05-13 ValidFAA registration status code V: Valid registration. All codes
N7199 Thorp
T-18
Fixed-wing, single engine Big Sky Flyers LLC
Billings, Montana
Experimental 2014-05-13 ValidFAA registration status code V: Valid registration. All codes
N8204J Piper
PA-28-161
Fixed-wing, single engine Kusa Aviation LLC
Beaumont, Texas
Standard 2014-05-13 ValidFAA registration status code V: Valid registration. All codes
N62742 Piper
PA-18-150
Fixed-wing, single engine Everingham Bros Bait CO
National City, California
Standard 2014-05-12 ValidFAA registration status code V: Valid registration. All codes
N6551W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2014-05-12 ValidFAA registration status code V: Valid registration. All codes
N2942R Piper
PA-28-161
Fixed-wing, single engine Individual owner
Michigan
Standard 2014-05-09 ValidFAA registration status code V: Valid registration. All codes
N666E Powers James A
GS-1
Fixed-wing, single engine Co-owned owner
California
Experimental 2014-05-08 ValidFAA registration status code V: Valid registration. All codes
N6148J Piper
PA-28-151
Fixed-wing, single engine North Texas Flight Ventures LLC
Mckinney, Texas
Standard 2014-05-07 ValidFAA registration status code V: Valid registration. All codes
N7380D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Texas
Multiple 2014-05-07 ValidFAA registration status code V: Valid registration. All codes
N8433L Cessna
172I
Fixed-wing, single engine Co-owned owner
Maine
Standard 2014-05-07 ValidFAA registration status code V: Valid registration. All codes
N8788R Richer Ned A
RV9A
Fixed-wing, single engine Individual owner
Arizona
Experimental 2014-05-07 ValidFAA registration status code V: Valid registration. All codes
N9732W Piper
PA-28-140
Fixed-wing, single engine Flying Elvis
Jacksonville, Florida
Standard 2014-05-07 ValidFAA registration status code V: Valid registration. All codes
N8784N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Maryland
Standard 2014-05-06 ValidFAA registration status code V: Valid registration. All codes
N16WL Cessna
172I
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2014-05-05 ValidFAA registration status code V: Valid registration. All codes
N8914D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2014-05-05 ValidFAA registration status code V: Valid registration. All codes
N12366 Cessna
172M
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2014-05-02 ValidFAA registration status code V: Valid registration. All codes
N24241 Piper
PA-38-112
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2014-05-02 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.