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
N5605J Cessna
172N
Fixed-wing, single engine Major Air LLC
Charleston, South Carolina
Standard 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N5855H Piper
PA-16
Fixed-wing, single engine Northeast Cub LLC
Hudson, New York
Standard 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N7760G Cessna
172L
Fixed-wing, single engine Individual owner
New York
Standard 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N82196 Piper
PA-18-150
Fixed-wing, single engine Flying W Ranch Jv
Cooperstown, North Dakota
Standard 2023-10-09 ValidFAA registration status code V: Valid registration. All codes
N33J Pitts
S1-C
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2023-10-08 ValidFAA registration status code V: Valid registration. All codes
N5198X Champion
7GCBC
Fixed-wing, single engine Individual owner
Washington
Standard 2023-10-08 ValidFAA registration status code V: Valid registration. All codes
N7306F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-08 ValidFAA registration status code V: Valid registration. All codes
N79475 Cessna
172K
Fixed-wing, single engine
Standard 2023-10-08 ValidFAA registration status code V: Valid registration. All codes
N171WR Rewey William M
CH 801
Fixed-wing, single engine Individual owner
California
Experimental 2023-10-07 ValidFAA registration status code V: Valid registration. All codes
N280YS Bingham Morss
LANCAIR 320
Fixed-wing, single engine Individual owner
Missouri
Experimental 2023-10-07 ValidFAA registration status code V: Valid registration. All codes
N5266E Cessna
172N
Fixed-wing, single engine Natchez Flight Training LLC
Natchez, Mississippi
Standard 2023-10-07 ValidFAA registration status code V: Valid registration. All codes
N566 Loutrel David
MYSTERY SHIP 2
Fixed-wing, single engine Individual owner
Alaska
Experimental 2023-10-07 ValidFAA registration status code V: Valid registration. All codes
N7310G Cessna
172K
Fixed-wing, single engine Individual owner
Alabama
Standard 2023-10-07 ValidFAA registration status code V: Valid registration. All codes
N734VC Cessna
172N
Fixed-wing, single engine Nashville Skyscrapers LLC
Old Hickory, Tennessee
Standard 2023-10-07 ValidFAA registration status code V: Valid registration. All codes
N98205 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-10-07 ValidFAA registration status code V: Valid registration. All codes
N98297 Piper
PA-28-140
Fixed-wing, single engine Black Hawk Flight Progress LLC
Cedar Falls, Iowa
Standard 2023-10-07 ValidFAA registration status code V: Valid registration. All codes
N1528X Piper
PA-28-151
Fixed-wing, single engine Aldrich Air Transport LLC
Saint Augustine, Florida
Standard 2023-10-06 ValidFAA registration status code V: Valid registration. All codes
N26234 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Compositec INC
Manitowoc, Wisconsin
Standard 2023-10-06 ValidFAA registration status code V: Valid registration. All codes
N44996 Piper
PA-28-161
Fixed-wing, single engine Executive Flyers INC
Sacramento, California
Standard 2023-10-06 ValidFAA registration status code V: Valid registration. All codes
N5560F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2023-10-06 ValidFAA registration status code V: Valid registration. All codes
N84898 Cessna
172K
Fixed-wing, single engine Coles County Airport Authority
Mattoon, Illinois
Standard 2023-10-06 ValidFAA registration status code V: Valid registration. All codes
N8649D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-10-06 ValidFAA registration status code V: Valid registration. All codes
N926EZ Sanders Herbert A
LONG EZ
Fixed-wing, single engine Echo Zulu LLC
Middletown, Delaware
Experimental 2023-10-06 ValidFAA registration status code V: Valid registration. All codes
N251DM American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-10-05 ValidFAA registration status code V: Valid registration. All codes
N323A Shankland Richard G
EMERAUDE
Fixed-wing, single engine Co-owned owner
Idaho
Experimental 2023-10-05 ValidFAA registration status code V: Valid registration. All codes
N503GL Great Lakes
2T-1A-1
Fixed-wing, single engine Individual owner
Arkansas
Standard 2023-10-05 ValidFAA registration status code V: Valid registration. All codes
N5865D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2023-10-05 ValidFAA registration status code V: Valid registration. All codes
N8264J Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-10-05 ValidFAA registration status code V: Valid registration. All codes
N833CB Cessna
172N
Fixed-wing, single engine Individual owner
California
Standard 2023-10-05 ValidFAA registration status code V: Valid registration. All codes
N9880G Cessna
172L
Fixed-wing, single engine Individual owner
Ohio
Multiple 2023-10-05 ValidFAA registration status code V: Valid registration. All codes
N1264U Cessna
172M
Fixed-wing, single engine Sky Creation INC
Torrance, California
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N15003 Piper
PA-28-140
Fixed-wing, single engine Flying Untethered LLC
Saranac Lake, New York
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N2941P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N4355Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N46158 Cessna
172I
Fixed-wing, single engine Cadillac Aircraft Services INC
Cadillac, Michigan
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N5751E Cessna
172N
Fixed-wing, single engine Flight Tech INC
Arlington, Washington
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N7038R Piper
PA-28-140
Fixed-wing, single engine Elite Aircraft Services LLC
Pierce City, Missouri
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N726 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N7312D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Washington
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N737VF Cessna
172N
Fixed-wing, single engine Compass Aviation Maintenance LLC
Shelby, North Carolina
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N7612G Cessna
172L
Fixed-wing, single engine Co-owned owner
Washington
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N7746F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Kansas
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N78938 Cessna
172K
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N81RG Stampe Et Renard
SV-4C
Fixed-wing, single engine Individual owner
Maryland
Experimental 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N841JW Cessna
172M
Fixed-wing, single engine Scenic Concepts LLC
La Crosse, Wisconsin
Standard 2023-10-04 ValidFAA registration status code V: Valid registration. All codes
N54290 Cessna
172P
Fixed-wing, single engine Laguna Verde Leasing INC
Wilmington, Delaware
Standard 2023-10-03 ValidFAA registration status code V: Valid registration. All codes
N608FT Piper
PA-28-161
Fixed-wing, single engine Florida Institute of Technology
Melbourne, Florida
Standard 2023-10-03 ValidFAA registration status code V: Valid registration. All codes
N99KK Brooks Lyle C
KENSHIP 1
Fixed-wing, single engine Individual owner
Colorado
Experimental 2023-10-03 ValidFAA registration status code V: Valid registration. All codes
N2713M Piper
PA-12
Fixed-wing, single engine Beacon West LLC
Billings, Montana
Standard 2023-10-02 ValidFAA registration status code V: Valid registration. All codes
N27155 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Withheld at owner's request
Standard 2023-10-02 ValidFAA registration status code V: Valid registration. All codes
N3987P Piper
PA-18-150
Fixed-wing, single engine Individual owner
California
Standard 2023-10-02 ValidFAA registration status code V: Valid registration. All codes
N4074V Ahrens Gerd H
RV-6
Fixed-wing, single engine Individual owner
Utah
Experimental 2023-10-02 ValidFAA registration status code V: Valid registration. All codes
N4418J Piper
PA-28-140
Fixed-wing, single engine S B Enterprise LLC
Marshall, Texas
Standard 2023-10-02 ValidFAA registration status code V: Valid registration. All codes
N816RA Cessna
172N
Fixed-wing, single engine Rochester Air Center LLC
Canandaigua, New York
Standard 2023-10-02 ValidFAA registration status code V: Valid registration. All codes
N8249B Piper
PA-28-161
Fixed-wing, single engine Individual owner
California
Standard 2023-10-02 ValidFAA registration status code V: Valid registration. All codes
N932AZ Cessna
172P
Fixed-wing, single engine N932Az LLC
Miami, Florida
Standard 2023-10-01 ValidFAA registration status code V: Valid registration. All codes
N3034Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-09-30 ValidFAA registration status code V: Valid registration. All codes
N4150H Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2023-09-30 ValidFAA registration status code V: Valid registration. All codes
N51952 Cessna
172P
Fixed-wing, single engine Jandd One LLC
Bozeman, Montana
Standard 2023-09-30 ValidFAA registration status code V: Valid registration. All codes
N5279G Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-09-30 ValidFAA registration status code V: Valid registration. All codes
N940AM Cessna
172P
Fixed-wing, single engine Oracle Aviation LLC
Omaha, Nebraska
Standard 2023-09-30 ValidFAA registration status code V: Valid registration. All codes
N9502W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Washington
Standard 2023-09-30 ValidFAA registration status code V: Valid registration. All codes
N555GB Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2023-09-29 ValidFAA registration status code V: Valid registration. All codes
N911WW Waggoner Jerry N
GLASAIR SH-2
Fixed-wing, single engine Individual owner
Washington
Experimental 2023-09-29 ValidFAA registration status code V: Valid registration. All codes
N19692 Cessna
172L
Fixed-wing, single engine Babyshark LLC
Duncan, Oklahoma
Standard 2023-09-28 ValidFAA registration status code V: Valid registration. All codes
N57DR Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-09-28 ValidFAA registration status code V: Valid registration. All codes
N6195W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2023-09-28 ValidFAA registration status code V: Valid registration. All codes
N7555G Cessna
172L
Fixed-wing, single engine Sac Air LLC
Citrus Heights, California
Standard 2023-09-28 ValidFAA registration status code V: Valid registration. All codes
N9561C Piper
PA-28-161
Fixed-wing, single engine Rak Flight Squad LLC
Bronx, New York
Standard 2023-09-28 ValidFAA registration status code V: Valid registration. All codes
N4213Y Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-09-27 ValidFAA registration status code V: Valid registration. All codes
N770DH Meyer Joe
RV-4
Fixed-wing, single engine Individual owner
Kansas
Experimental 2023-09-27 ValidFAA registration status code V: Valid registration. All codes
N80725 Cessna
172M
Fixed-wing, single engine High Flight Academy LLC
Allison Park, Pennsylvania
Standard 2023-09-27 ValidFAA registration status code V: Valid registration. All codes
N84309 Cessna
172K
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-09-27 ValidFAA registration status code V: Valid registration. All codes
N9663U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-09-27 ValidFAA registration status code V: Valid registration. All codes
N1325F Cessna
172N
Fixed-wing, single engine A&F Aviation Services LLC
Collierville, Tennessee
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N3599Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N4028Z Piper
PA-18-150
Fixed-wing, single engine Flower Pot Cattle CO LLC
Arlington, Arizona
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N5600W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Nebraska
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N63482 Cessna
172P
Fixed-wing, single engine Co-owned owner
California
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N738CR Cessna
172N
Fixed-wing, single engine Individual owner
New York
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N7449G Cessna
172K
Fixed-wing, single engine Avmajic LLC
Waterford, Michigan
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N777SR Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N78249 Cessna
172K
Fixed-wing, single engine Individual owner
Florida
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N90948 Piper
PA-18-150
Fixed-wing, single engine Ccf Ventures INC
Bangor, Maine
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N9640V Cessna
172M
Fixed-wing, single engine N9640V LLC
Ann Arbor, Michigan
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N9863L Cessna
172P
Fixed-wing, single engine Aspire Aviation LLC
Farmingdale, New York
Standard 2023-09-26 ValidFAA registration status code V: Valid registration. All codes
N1222A Piper
PA-18
Fixed-wing, single engine Dawley Creek Ranch Nv LLC
Ruby Valley, Nevada
Standard 2023-09-25 ValidFAA registration status code V: Valid registration. All codes
N2851P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2023-09-25 ValidFAA registration status code V: Valid registration. All codes
N3064Z Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2023-09-25 ValidFAA registration status code V: Valid registration. All codes
N5314W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Washington
Standard 2023-09-25 ValidFAA registration status code V: Valid registration. All codes
N6533L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Texas
Standard 2023-09-25 ValidFAA registration status code V: Valid registration. All codes
N6834W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-09-25 ValidFAA registration status code V: Valid registration. All codes
N73134 Cessna
172M
Fixed-wing, single engine Harborside Aviation Services INC
Punta Gorda, Florida
Standard 2023-09-25 ValidFAA registration status code V: Valid registration. All codes
N7461G Cessna
172K
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-09-25 ValidFAA registration status code V: Valid registration. All codes
N16535 Piper
PA-28-140
Fixed-wing, single engine Wdc Enterprises LLC
Beaumont, Texas
Standard 2023-09-24 ValidFAA registration status code V: Valid registration. All codes
N33715 Piper
PA-28-140
Fixed-wing, single engine Wdc Enterprises LLC
Beaumont, Texas
Standard 2023-09-24 ValidFAA registration status code V: Valid registration. All codes
N3707P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2023-09-24 ValidFAA registration status code V: Valid registration. All codes
N4139Z Piper
PA-18-150
Fixed-wing, single engine L Sheffels and Son INC
Wilbur, Washington
Standard 2023-09-24 ValidFAA registration status code V: Valid registration. All codes
N5837U Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Jersey
Standard 2023-09-24 ValidFAA registration status code V: Valid registration. All codes
N733KE Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-09-24 ValidFAA registration status code V: Valid registration. All codes
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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.