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
N5757F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-12-02 ValidFAA registration status code V: Valid registration. All codes
N5813W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-12-02 ValidFAA registration status code V: Valid registration. All codes
N616FL Piper
PA-28-140
Fixed-wing, single engine Flight Gear Aviation LLC
Pickerington, Ohio
Standard 2024-12-02 ValidFAA registration status code V: Valid registration. All codes
N816L Cessna
172I
Fixed-wing, single engine Ballard Expert Services LLC
Bowersville, Georgia
Standard 2024-12-02 ValidFAA registration status code V: Valid registration. All codes
N9313C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-12-02 ValidFAA registration status code V: Valid registration. All codes
N1736T Piper
PA-28-140
Fixed-wing, single engine N1736T LLC
Lake Point, Utah
Standard 2024-11-30 ValidFAA registration status code V: Valid registration. All codes
N7207D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2024-11-29 ValidFAA registration status code V: Valid registration. All codes
N95329 Piper
PA-28-140
Fixed-wing, single engine Jay Stylz Trucking LLC
Cedar Rapids, Iowa
Standard 2024-11-29 ValidFAA registration status code V: Valid registration. All codes
N111JH Powell K D/Powell D T
RV-4
Fixed-wing, single engine Blazie Marketing Service INC
Street, Maryland
Experimental 2024-11-27 ValidFAA registration status code V: Valid registration. All codes
N3293Z Piper
PA-18A 150
Fixed-wing, single engine Straight and Leve Aeromedical LLC
Billings, Montana
Standard 2024-11-27 ValidFAA registration status code V: Valid registration. All codes
N243CM Masengill Scott C
MURPHY ELITE
Fixed-wing, single engine Withheld at owner's request
Experimental 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N2449P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N38373 Piper
PA-28-161
Fixed-wing, single engine Outbound Aviation LLC
Dover, Delaware
Standard 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N44771 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N5123R Cessna
172M
Fixed-wing, single engine Giving Wings Aviation LLC
Traverse City, Michigan
Standard 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N734BU Cessna
172N
Fixed-wing, single engine Airplanes and Attitude LLC
Mckinney, Texas
Standard 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N8757N Piper
PA-28-140
Fixed-wing, single engine 57 November LLC
Charlotte, North Carolina
Standard 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N122AK Robinson Helicopter
R22 BETA
Helicopter Individual owner
Alabama
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N172MR Cessna
172N
Fixed-wing, single engine Gorge Winds Aviation INC
Fairview, Oregon
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N20503 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N2677Z Bellanca
7GCBC
Fixed-wing, single engine Willkris Aviation Services LLC
Smithfield, Virginia
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N27WK Bellanca
7GCAA
Fixed-wing, single engine Willkris Aviation Services LLC
Smithfield, Virginia
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N35810 Cessna
172I
Fixed-wing, single engine Individual owner
Texas
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N61884 Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N73732 Cessna
172N
Fixed-wing, single engine Midway Capital Aviation INC
Orlando, Florida
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N738LM Cessna
172N
Fixed-wing, single engine Black Bear Aviation LLC
Scottsdale, Arizona
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N7837G Cessna
172L
Fixed-wing, single engine Individual owner
Arkansas
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N8393L Cessna
172I
Fixed-wing, single engine Individual owner
Maryland
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N1324U Cessna
172M
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-11-23 ValidFAA registration status code V: Valid registration. All codes
N1379B Hannasch Leonard H
RV-3
Fixed-wing, single engine Individual owner
Kansas
Experimental 2024-11-23 ValidFAA registration status code V: Valid registration. All codes
N250WF Piper
PA-28-161
Fixed-wing, single engine Gita Aviation LLC
Dallas, Texas
Standard 2024-11-23 ValidFAA registration status code V: Valid registration. All codes
N62367 Piper
PA-18A 150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2024-11-23 ValidFAA registration status code V: Valid registration. All codes
N737ZN Cessna
172N
Fixed-wing, single engine Equinoxx Flight Systems LLC
Lawrenceville, Georgia
Standard 2024-11-23 ValidFAA registration status code V: Valid registration. All codes
N9587S Champion
7GCAA
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2024-11-23 ValidFAA registration status code V: Valid registration. All codes
N9679A Cessna
172P
Fixed-wing, single engine Equinoxx Flight Systems LLC
Lawrenceville, Georgia
Standard 2024-11-23 ValidFAA registration status code V: Valid registration. All codes
N26894 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Moore Altitude LLC
Lake Saint Louis, Missouri
Standard 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N3PL Anthony-Pazmany
PL-1A
Fixed-wing, single engine Co-owned owner
Oklahoma
Experimental 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N4130J Piper
PA-28-140
Fixed-wing, single engine Our Space Properties LLC
Camdenton, Missouri
Standard 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N522B Piper
PA-18
Fixed-wing, single engine Individual owner
Virginia
Standard 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N61574 Cessna
172M
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N73020 Cessna
172M
Fixed-wing, single engine Ajf Enterprises LLC
Des Moines, Iowa
Standard 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N736JB American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N78WG Giffin
THORP T-18
Fixed-wing, single engine Individual owner
North Dakota
Experimental 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N9597V Cessna
172M
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N13353 Cessna
172M
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2024-11-21 ValidFAA registration status code V: Valid registration. All codes
N32361 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-11-21 ValidFAA registration status code V: Valid registration. All codes
N5186X Champion
7GCAA
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2024-11-21 ValidFAA registration status code V: Valid registration. All codes
N7100F Piper
PA-28-151
Fixed-wing, single engine Withheld at owner's request
Standard 2024-11-21 ValidFAA registration status code V: Valid registration. All codes
N738SR Cessna
172N
Fixed-wing, single engine Rise Aviation LLC
Auburn, Alabama
Standard 2024-11-21 ValidFAA registration status code V: Valid registration. All codes
N1076A Piper
PA-18
Fixed-wing, single engine Tri City Airframe LLC
Kalispell, Montana
Standard 2024-11-20 ValidFAA registration status code V: Valid registration. All codes
N12584 Cessna
172M
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-11-20 ValidFAA registration status code V: Valid registration. All codes
N140AM Piper
PA-28-140
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2024-11-20 ValidFAA registration status code V: Valid registration. All codes
N26165 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
California
Standard 2024-11-20 ValidFAA registration status code V: Valid registration. All codes
N3027Z Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-11-20 ValidFAA registration status code V: Valid registration. All codes
N6203J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2024-11-20 ValidFAA registration status code V: Valid registration. All codes
N76HJ Cessna
172M
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-11-20 ValidFAA registration status code V: Valid registration. All codes
N8443R Piper
PA-28-140
Fixed-wing, single engine Kor Aviation LLC
Piedmont, South Dakota
Standard 2024-11-20 ValidFAA registration status code V: Valid registration. All codes
N1625J Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2024-11-19 ValidFAA registration status code V: Valid registration. All codes
N272KS Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-11-19 ValidFAA registration status code V: Valid registration. All codes
N2918P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-11-19 ValidFAA registration status code V: Valid registration. All codes
N5729U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-11-19 ValidFAA registration status code V: Valid registration. All codes
N728FL Piper
PA-28-140
Fixed-wing, single engine Falcon Aviation Academy CORP
Chino, California
Standard 2024-11-19 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N744CW Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
California
Standard 2024-11-19 ValidFAA registration status code V: Valid registration. All codes
N4465A Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2024-11-18 ValidFAA registration status code V: Valid registration. All codes
N55955 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-11-18 ValidFAA registration status code V: Valid registration. All codes
N84657 Cessna
172K
Fixed-wing, single engine Individual owner
Utah
Standard 2024-11-18 ValidFAA registration status code V: Valid registration. All codes
N898P Piper
PA-28-151
Fixed-wing, single engine Titus Aviation LLC
Fresno, California
Standard 2024-11-18 ValidFAA registration status code V: Valid registration. All codes
N1072E Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Connecticut
Standard 2024-11-16 ValidFAA registration status code V: Valid registration. All codes
N5712F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-11-16 ValidFAA registration status code V: Valid registration. All codes
N622FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2024-11-16 ValidFAA registration status code V: Valid registration. All codes
N6507R Beech
B19
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-11-16 ValidFAA registration status code V: Valid registration. All codes
N36861 Robinson Helicopter
R22 BETA
Helicopter Withheld at owner's request
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N4321J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N46254 Cessna
172I
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N5222J Cessna
172N
Fixed-wing, single engine Flywyo LLC
Kalispell, Montana
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N56281 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N749MC Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N193JS Cessna
172M
Fixed-wing, single engine Ryan Moore LLC
Fayetteville, North Carolina
Standard 2024-11-14 ValidFAA registration status code V: Valid registration. All codes
N923KM Miller Keith W
RV-6A
Fixed-wing, single engine Individual owner
Washington
Experimental 2024-11-14 ValidFAA registration status code V: Valid registration. All codes
N12704 Cessna
172M
Fixed-wing, single engine Charlie Lima 1 LLC
Jacksonville, Florida
Standard 2024-11-13 ValidFAA registration status code V: Valid registration. All codes
N4090E Piper
PA-18-150
Fixed-wing, single engine Aerodrome LLC
Louisville, Kentucky
Standard 2024-11-13 ValidFAA registration status code V: Valid registration. All codes
N734NK Cessna
172N
Fixed-wing, single engine Blue Sky Aviation LLC
El Cajon, California
Standard 2024-11-13 ValidFAA registration status code V: Valid registration. All codes
N838JW Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2024-11-13 ValidFAA registration status code V: Valid registration. All codes
N32781 Piper
PA-28-151
Fixed-wing, single engine Arends Aviation and Instruction LLC
Mahomet, Illinois
Standard 2024-11-12 ValidFAA registration status code V: Valid registration. All codes
N3853P Piper
PA-22-150
Fixed-wing, single engine Lambert Aviation LLC
Charlotte, North Carolina
Standard 2024-11-12 ValidFAA registration status code V: Valid registration. All codes
N4851G Cessna
172N
Fixed-wing, single engine Eye Candy Aviation LLC
Jacksonville, Florida
Standard 2024-11-12 ValidFAA registration status code V: Valid registration. All codes
N65BM Varga Aircraft Corp.
2150A
Fixed-wing, single engine Volatilis LLC
Wilmington, Delaware
Standard 2024-11-12 ValidFAA registration status code V: Valid registration. All codes
N82KP Doug A Carter
MURPHY ACFT REBEL
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2024-11-12 ValidFAA registration status code V: Valid registration. All codes
N9612H Cessna
172M
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2024-11-12 ValidFAA registration status code V: Valid registration. All codes
N5657W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-11-09 ValidFAA registration status code V: Valid registration. All codes
N6718W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2024-11-09 ValidFAA registration status code V: Valid registration. All codes
N791RW Wagner-Robert
BUSHBY MUSTANG II
Fixed-wing, single engine Individual owner
Michigan
Experimental 2024-11-09 ValidFAA registration status code V: Valid registration. All codes
N19771 Cessna
172L
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-11-08 ValidFAA registration status code V: Valid registration. All codes
N2197W Beech
B19
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2024-11-08 ValidFAA registration status code V: Valid registration. All codes
N41678 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-11-08 ValidFAA registration status code V: Valid registration. All codes
N14FT Terrell Franklin Pierce
RV-4
Fixed-wing, single engine Co-owned owner
California
Experimental 2024-11-07 ValidFAA registration status code V: Valid registration. All codes
N40506 Robinson Helicopter
R22 BETA
Helicopter Individual owner
Texas
Standard 2024-11-07 ValidFAA registration status code V: Valid registration. All codes
N5760D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2024-11-07 ValidFAA registration status code V: Valid registration. All codes
N59CE Escallon/Stottlemyer
S1S
Fixed-wing, single engine Individual owner
Indiana
Experimental 2024-11-07 ValidFAA registration status code V: Valid registration. All codes
N6336E Linsenbach Harry H
RV-6
Fixed-wing, single engine Plane Fun INC Tr Trustee
Snellville, Georgia
Experimental 2024-11-07 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.