The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 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

These connections as data: /graph/engine/lycoming-o-320-series.json · about the eFlight graph.

Aircraft newest certificates first · 27,315

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N9606W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2025-07-09 ValidFAA registration status code V: Valid registration. All codes
N122NA Piper
PA-28-161
Fixed-wing, single engine Gilded Gull Aviation LLC
Middletown, Rhode Island
Standard 2025-07-08 ValidFAA registration status code V: Valid registration. All codes
N411JD Dixon Gerald E
RV-6A
Fixed-wing, single engine Individual owner
Washington
Experimental 2025-07-08 ValidFAA registration status code V: Valid registration. All codes
N551PG Cessna
172N
Fixed-wing, single engine Chavi LLC
Fredericksburg, Texas
Standard 2025-07-08 ValidFAA registration status code V: Valid registration. All codes
N5904U Piper
PA-28-140
Fixed-wing, single engine Gilded Gull Aviation LLC
Middletown, Rhode Island
Standard 2025-07-08 ValidFAA registration status code V: Valid registration. All codes
N64464 Cessna
172P
Fixed-wing, single engine Vector Air LLC
Erie, Colorado
Standard 2025-07-08 ValidFAA registration status code V: Valid registration. All codes
N68508 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
North Dakota
Standard 2025-07-08 ValidFAA registration status code V: Valid registration. All codes
N751 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2025-07-08 ValidFAA registration status code V: Valid registration. All codes
N10BY American Champion Aircraft
7GCAA
Fixed-wing, single engine King Air LLC
Navasota, Texas
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N3396Z Piper
PA-18-150
Fixed-wing, single engine Pineland Holdings LLC
Gibsland, Louisiana
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N35668 Cessna
172I
Fixed-wing, single engine Individual owner
Texas
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N4381Q Cessna
172L
Fixed-wing, single engine Aero Wise Services LLC
Decatur, Texas
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N4399Q Cessna
172L
Fixed-wing, single engine Individual owner
Florida
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N4630T Piper
PA-28-140
Fixed-wing, single engine Flyair Flight Academy LLC
Flint, Texas
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N5356X Piper
PA-28-181
Fixed-wing, single engine Skywest Leasing INC
St George, Utah
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N6349 Fox
WILLIE TWO
Fixed-wing, single engine Individual owner
Pennsylvania
Experimental 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N6867J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N70JH Holcomb
STARDUSTER II
Fixed-wing, single engine Individual owner
California
Experimental 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N733AJ Cessna
172N
Fixed-wing, single engine 578 Airplane Leasing INC
Kissimmee, Florida
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N7855G Cessna
172L
Fixed-wing, single engine Alpenglow Air 3 LLC
Anchorage, Alaska
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N8180M Cessna
172L
Fixed-wing, single engine Leap Aviation INC
Wilmington, Delaware
Standard 2025-07-07 ValidFAA registration status code V: Valid registration. All codes
N5803W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Maryland
Standard 2025-07-06 ValidFAA registration status code V: Valid registration. All codes
N496W Curtiss Wright
TRAVEL AIR 12-Q
Fixed-wing, single engine Western Antique Aeroplane & Automobile Museum
Hood River, Oregon
Standard 2025-07-05 ValidFAA registration status code V: Valid registration. All codes
N555DN Norlund Dustin
VANS RV-6
Fixed-wing, single engine Individual owner
Iowa
Experimental 2025-07-05 ValidFAA registration status code V: Valid registration. All codes
N73726 Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-07-04 ValidFAA registration status code V: Valid registration. All codes
N110VP Piper
PA-28-161
Fixed-wing, single engine Fly Aviation CORP
Wilmington, Delaware
Standard 2025-07-03 ValidFAA registration status code V: Valid registration. All codes
N13187 Cessna
172M
Fixed-wing, single engine Fly Aviation CORP
Wilmington, Delaware
Standard 2025-07-03 ValidFAA registration status code V: Valid registration. All codes
N13506 Cessna
172M
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2025-07-03 ValidFAA registration status code V: Valid registration. All codes
N1668J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2025-07-03 ValidFAA registration status code V: Valid registration. All codes
N5052Y Bellanca
7GCAA
Fixed-wing, single engine Individual owner
California
Standard 2025-07-03 ValidFAA registration status code V: Valid registration. All codes
N5115V Morrisey
2150A
Fixed-wing, single engine Individual owner
Washington
Standard 2025-07-03 ValidFAA registration status code V: Valid registration. All codes
N61975 Cessna
172M
Fixed-wing, single engine Fern Sky LLC
Monroe Township, New Jersey
Standard 2025-07-03 ValidFAA registration status code V: Valid registration. All codes
N9091H Cessna
172M
Fixed-wing, single engine Individual owner
South Dakota
Standard 2025-07-03 ValidFAA registration status code V: Valid registration. All codes
N2236G Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2025-07-02 ValidFAA registration status code V: Valid registration. All codes
N4309A Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Connecticut
Standard 2025-07-02 ValidFAA registration status code V: Valid registration. All codes
N4378Y Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Restricted 2025-07-02 ValidFAA registration status code V: Valid registration. All codes
N551TX Entenmann William G
MUSTANG II
Fixed-wing, single engine Individual owner
Virginia
Experimental 2025-07-02 ValidFAA registration status code V: Valid registration. All codes
N6066N Beech
19A
Fixed-wing, single engine Pacific Union College
Angwin, California
Standard 2025-07-02 ValidFAA registration status code V: Valid registration. All codes
N61763 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2025-07-02 ValidFAA registration status code V: Valid registration. All codes
N441AC American Champion Aircraft
7GCAA
Fixed-wing, single engine Aero Champ LLC
Orlando, Florida
Standard 2025-07-01 ValidFAA registration status code V: Valid registration. All codes
N6450R Piper
PA-28-140
Fixed-wing, single engine Plan Bee LLC
Washington, District of Columbia
Standard 2025-07-01 ValidFAA registration status code V: Valid registration. All codes
N12753 Cessna
172M
Fixed-wing, single engine Juliett Papa LLC
Kalispell, Montana
Standard 2025-06-30 ValidFAA registration status code V: Valid registration. All codes
N2333H Piper
PA-18-150
Fixed-wing, single engine Holseberg Aviation LLC
Ridgeville, South Carolina
Standard 2025-06-30 ValidFAA registration status code V: Valid registration. All codes
N5782F Piper
PA-28-140
Fixed-wing, single engine Mission Aviators LLC
Spring, Texas
Standard 2025-06-30 ValidFAA registration status code V: Valid registration. All codes
N59SR Raeder James
AVID FLYER SKYRAEDER
Fixed-wing, single engine Individual owner
Idaho
Experimental 2025-06-30 ValidFAA registration status code V: Valid registration. All codes
N714SW Cessna
152
Fixed-wing, single engine Individual owner
California
Standard 2025-06-30 ValidFAA registration status code V: Valid registration. All codes
N33562 Piper
PA-28-140
Fixed-wing, single engine Aiken Flyers LLC
Aiken, South Carolina
Standard 2025-06-28 ValidFAA registration status code V: Valid registration. All codes
N70416 Cessna
172M
Fixed-wing, single engine Individual owner
Louisiana
Standard 2025-06-28 ValidFAA registration status code V: Valid registration. All codes
N75198 Piper
PA-28-151
Fixed-wing, single engine Flightline LLC
Kaysville, Utah
Standard 2025-06-28 ValidFAA registration status code V: Valid registration. All codes
N3927Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2025-06-27 ValidFAA registration status code V: Valid registration. All codes
N43218 Piper
PA-28-140
Fixed-wing, single engine On Final Aviation LLC
Brookland, Arkansas
Standard 2025-06-27 ValidFAA registration status code V: Valid registration. All codes
N65489 Cessna
172P
Fixed-wing, single engine Flight Solutions LLC
Columbia, Missouri
Standard 2025-06-27 ValidFAA registration status code V: Valid registration. All codes
N6640H Cessna
172M
Fixed-wing, single engine Solis Aviation LLC
Carroll, Ohio
Standard 2025-06-27 ValidFAA registration status code V: Valid registration. All codes
N6671P Cessna
172M
Fixed-wing, single engine Co-owned owner
New Hampshire
Standard 2025-06-27 ValidFAA registration status code V: Valid registration. All codes
N9665W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Maryland
Standard 2025-06-27 ValidFAA registration status code V: Valid registration. All codes
N1082F Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-06-26 ValidFAA registration status code V: Valid registration. All codes
N12926 Cessna
172M
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2025-06-26 ValidFAA registration status code V: Valid registration. All codes
N7473D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Virginia
Multiple 2025-06-26 ValidFAA registration status code V: Valid registration. All codes
N13069 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N14313 Piper
PA-18A 150
Fixed-wing, single engine Individual owner
South Dakota
Standard 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N2896Q Cessna
172L
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Multiple 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N2HM Manvel Harry Bancroft
DEFIANT
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N4024J Piper
PA-28-140
Fixed-wing, single engine Individual owner
New Jersey
Standard 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N52685 Cessna
172P
Fixed-wing, single engine Glidewell Aviation INC
Parkland, Florida
Standard 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N5323E Cessna
172N
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N5501A Bellanca
7GCAA
Fixed-wing, single engine Profly LLC
Wichita Falls, Texas
Multiple 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N6488R Piper
PA-28-140
Fixed-wing, single engine 6 Aerospace LLC
Albuquerque, New Mexico
Standard 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N864TW Cessna
172M
Fixed-wing, single engine Tailwinds Academy of Aviation
Philadelphia, Pennsylvania
Standard 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N9573W Piper
PA-28-140
Fixed-wing, single engine Pyxl Sky LLC
Cogan Station, Pennsylvania
Standard 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N9667V Cessna
172M
Fixed-wing, single engine Individual owner
West Virginia
Standard 2025-06-25 ValidFAA registration status code V: Valid registration. All codes
N126RV Olds Robert R
VAN'S RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-06-24 ValidFAA registration status code V: Valid registration. All codes
N1689J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2025-06-24 ValidFAA registration status code V: Valid registration. All codes
N5062L Bellanca
7GCBC
Fixed-wing, single engine Sundial Getaways LLC
Santa Rosa Beach, Florida
Standard 2025-06-24 ValidFAA registration status code V: Valid registration. All codes
N5753F Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2025-06-24 ValidFAA registration status code V: Valid registration. All codes
N6118D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-06-24 ValidFAA registration status code V: Valid registration. All codes
N701BP Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-06-24 ValidFAA registration status code V: Valid registration. All codes
N741DP Cessna
172M
Fixed-wing, single engine Pleasant Aviation LLC
Mount Pleasant, Texas
Standard 2025-06-24 ValidFAA registration status code V: Valid registration. All codes
N839S E A A Chapter 839
RV6
Fixed-wing, single engine Jj Aero LLC
Valley Center, Kansas
Experimental 2025-06-24 ValidFAA registration status code V: Valid registration. All codes
N9585W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2025-06-24 ValidFAA registration status code V: Valid registration. All codes
N19727 Cessna
172L
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-06-23 ValidFAA registration status code V: Valid registration. All codes
N44555 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Texas
Standard 2025-06-23 ValidFAA registration status code V: Valid registration. All codes
N6392Y Cessna
172M
Fixed-wing, single engine Boldflight LLC
Greenwood, Indiana
Standard 2025-06-21 ValidFAA registration status code V: Valid registration. All codes
N7216F Piper
PA-28-140
Fixed-wing, single engine Bravo Aviation Assets LLC
Akron, Ohio
Standard 2025-06-21 ValidFAA registration status code V: Valid registration. All codes
N2745Z Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-06-20 ValidFAA registration status code V: Valid registration. All codes
N2896E Cessna
172N
Fixed-wing, single engine Flight Club 502 INC
Louisville, Kentucky
Standard 2025-06-20 ValidFAA registration status code V: Valid registration. All codes
N615MA American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
New York
Standard 2025-06-20 ValidFAA registration status code V: Valid registration. All codes
N7474R Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2025-06-20 ValidFAA registration status code V: Valid registration. All codes
N8082E Cessna
172N
Fixed-wing, single engine Aviation Access LLC
Van Nuys, California
Standard 2025-06-20 ValidFAA registration status code V: Valid registration. All codes
N81ZW Piper
PA-12
Fixed-wing, single engine Individual owner
Oregon
Standard 2025-06-20 ValidFAA registration status code V: Valid registration. All codes
N9003E Cessna
172N
Fixed-wing, single engine Bermuda Dunes Flight Training LLC
Palm Desert, California
Standard 2025-06-20 ValidFAA registration status code V: Valid registration. All codes
N9129S Champion
7GCB
Fixed-wing, single engine August Aero LLC
Kalispell, Montana
Standard 2025-06-20 ValidFAA registration status code V: Valid registration. All codes
N2775E Cessna
172N
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-06-19 ValidFAA registration status code V: Valid registration. All codes
N3648Z Piper
PA-22-160
Fixed-wing, single engine Mow the Sky LLC
Midway, Utah
Standard 2025-06-19 ValidFAA registration status code V: Valid registration. All codes
N6365F Cessna
172N
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2025-06-19 ValidFAA registration status code V: Valid registration. All codes
N719DD Doyle William C
HATZ CB-1
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2025-06-19 ValidFAA registration status code V: Valid registration. All codes
N7627F Piper
PA-28-151
Fixed-wing, single engine Lo CO Holdings LLC
Loudon, Tennessee
Standard 2025-06-19 ValidFAA registration status code V: Valid registration. All codes
N321WS Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Wrong Brothers Aviation LLC
Wilmington, Delaware
Standard 2025-06-18 ValidFAA registration status code V: Valid registration. All codes
N427JC Jennings James G
MARQUART MA5 CHARGER
Fixed-wing, single engine Kad Enterprises LLC
Everett, Washington
Experimental 2025-06-18 ValidFAA registration status code V: Valid registration. All codes
N5501F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2025-06-18 ValidFAA registration status code V: Valid registration. All codes
N56007 Piper
PA-28-140
Fixed-wing, single engine N56007 LLC
Burke, Virginia
Standard 2025-06-18 ValidFAA registration status code V: Valid registration. All codes
Previous Page 26 of 200 Next

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.