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
N8483R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nevada
Standard 2024-12-21 ValidFAA registration status code V: Valid registration. All codes
N8518D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Florida
Standard 2024-12-21 ValidFAA registration status code V: Valid registration. All codes
N8722N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-12-21 ValidFAA registration status code V: Valid registration. All codes
N104PD Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2024-12-20 ValidFAA registration status code V: Valid registration. All codes
N20616 Cessna
172M
Fixed-wing, single engine Mcconnell Group LLC
Edwardsville, Illinois
Standard 2024-12-20 ValidFAA registration status code V: Valid registration. All codes
N2759P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Nebraska
Standard 2024-12-20 ValidFAA registration status code V: Valid registration. All codes
N47508 Piper
PA-28-161
Fixed-wing, single engine Beverly Flight Center LLC
Middleton, Massachusetts
Standard 2024-12-20 ValidFAA registration status code V: Valid registration. All codes
N492W Piper
PA-23
Fixed-wing, multi-engine Airplane Adventures LLC
Palos Heights, Illinois
Standard 2024-12-20 ValidFAA registration status code V: Valid registration. All codes
N5003W Piper
PA-28
Fixed-wing, single engine Dts Flying LLC
Lake Alfred, Florida
Standard 2024-12-20 ValidFAA registration status code V: Valid registration. All codes
N5040M Beech
B19
Fixed-wing, single engine Hulme Aviation LLC
Gilbert, Arizona
Standard 2024-12-20 ValidFAA registration status code V: Valid registration. All codes
N28NB Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-12-19 ValidFAA registration status code V: Valid registration. All codes
N6164D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2024-12-19 ValidFAA registration status code V: Valid registration. All codes
N8452H Piper
PA-28-161
Fixed-wing, single engine Macorix Transport LLC
Newark, New Jersey
Standard 2024-12-19 ValidFAA registration status code V: Valid registration. All codes
N8571V American Champion Aircraft
7GCAA
Fixed-wing, single engine Flywyo LLC
Kalispell, Montana
Standard 2024-12-19 ValidFAA registration status code V: Valid registration. All codes
N10183 Stits Playboy
SA3B
Fixed-wing, single engine Excelsior Aviation 2 LLC
Lewes, Delaware
Experimental 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N130GY Sorrell Jerry L
VANS RV4
Fixed-wing, single engine Individual owner
California
Experimental 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N160RF Piper
PA-28-140
Fixed-wing, single engine Yank-N-Bank LLC
Greeley, Colorado
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N33CD Cessna
172M
Fixed-wing, single engine Individual owner
Maine
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N41472 Piper
PA-28-140
Fixed-wing, single engine Jeborah Aero LLC
Jefferson City, Missouri
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N4500W Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N5984W Piper
PA-28-140
Fixed-wing, single engine N4036R LLC
Quinton, Alabama
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N600TL Robinson Helicopter
R22 BETA
Helicopter Lbaviation LLC
Wheatland, Wyoming
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N7650S Bellanca
7GCBC
Fixed-wing, single engine Moore Aviation LLC
Westminster, Colorado
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N8158W Piper
PA-28-180
Fixed-wing, single engine Individual owner
California
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N3468T Cessna
177
Fixed-wing, single engine Mcn Systems LLC
Mount Airy, Maryland
Standard 2024-12-17 ValidFAA registration status code V: Valid registration. All codes
N641RH Piper
PA-18-150
Fixed-wing, single engine Jakes Guide Service LLC
Willow, Alaska
Standard 2024-12-17 ValidFAA registration status code V: Valid registration. All codes
N9735D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Florida
Standard 2024-12-17 ValidFAA registration status code V: Valid registration. All codes
N3455T Cessna
177
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-12-16 ValidFAA registration status code V: Valid registration. All codes
N486P Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-12-16 ValidFAA registration status code V: Valid registration. All codes
N63CL Stark Charles H
RV-6
Fixed-wing, single engine Individual owner
Florida
Experimental 2024-12-16 ValidFAA registration status code V: Valid registration. All codes
N7038F Piper
PA-28-151
Fixed-wing, single engine Fly With US LLC
Seminole, Alabama
Standard 2024-12-16 ValidFAA registration status code V: Valid registration. All codes
N74964 Piper
PA-18-150
Fixed-wing, single engine Individual owner
North Dakota
Standard 2024-12-16 ValidFAA registration status code V: Valid registration. All codes
N96BT Jefferson Robert K
KIS TR1
Fixed-wing, single engine Individual owner
California
Experimental 2024-12-16 ValidFAA registration status code V: Valid registration. All codes
N9929W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2024-12-16 ValidFAA registration status code V: Valid registration. All codes
N1613W American
AA-5
Fixed-wing, single engine Individual owner
Virginia
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N32712 Piper
PA-28-151
Fixed-wing, single engine Piper712 LLC
Saint Petersburg, Florida
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N3494B Piper
PA-23
Fixed-wing, multi-engine Individual owner
Connecticut
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N4240Q Cessna
172L
Fixed-wing, single engine Individual owner
Texas
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N54ZR Wag Aero/Scheffler Fritz
CUBY ACRO TRAINER
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N6675J Piper
PA-28-140
Fixed-wing, single engine Reece Aviation LLC
North Clarendon, Vermont
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N7651F Piper
PA-28-151
Fixed-wing, single engine Aishvaryam LLC DBA
Lancaster, Texas
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N8804N Piper
PA-28-140
Fixed-wing, single engine Carbon Regional Aero Club
Lehighton, Pennsylvania
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N1477X Piper
PA-28-140
Fixed-wing, single engine Red Rock Flying School LLC
Mesa, Arizona
Standard 2024-12-13 ValidFAA registration status code V: Valid registration. All codes
N43164 Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2024-12-13 ValidFAA registration status code V: Valid registration. All codes
N504JT Karren Thomas J
RV-4
Fixed-wing, single engine Wilson Richard W
Independence, Oregon
Experimental 2024-12-13 ValidFAA registration status code V: Valid registration. All codes
N5239N Piper
PA-18AS-135
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-12-13 ValidFAA registration status code V: Valid registration. All codes
N581JD Jennings Mark
VANS ACFT RV6
Fixed-wing, single engine Aviation Trust CO LLC Trustee
Oklahoma City, Oklahoma
Experimental 2024-12-13 ValidFAA registration status code V: Valid registration. All codes
N9771D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2024-12-13 ValidFAA registration status code V: Valid registration. All codes
N2889Z Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-12-12 ValidFAA registration status code V: Valid registration. All codes
N4836A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2024-12-12 ValidFAA registration status code V: Valid registration. All codes
N483FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-12-12 ValidFAA registration status code V: Valid registration. All codes
N525PU Piper
PA-28-161
Fixed-wing, single engine Lindsay Aviation INC
West Seneca, New York
Standard 2024-12-12 ValidFAA registration status code V: Valid registration. All codes
N653SR Cessna
177
Fixed-wing, single engine Vertex Aviation Services LLC
Burlington, Washington
Standard 2024-12-12 ValidFAA registration status code V: Valid registration. All codes
N7197R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2024-12-12 ValidFAA registration status code V: Valid registration. All codes
N7263Q Cessna
172L
Fixed-wing, single engine Co-owned owner
Wyoming
Standard 2024-12-12 ValidFAA registration status code V: Valid registration. All codes
N73367 Cessna
172M
Fixed-wing, single engine Individual owner
Florida
Standard 2024-12-12 ValidFAA registration status code V: Valid registration. All codes
N13513 Cessna
172M
Fixed-wing, single engine Stella Luna Aviation LLC
Olive Branch, Mississippi
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N308TA American Champion Aircraft
7GCAA
Fixed-wing, single engine Trinity Aviation LLC
Georgetown, Texas
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N32932 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Virginia
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N4284P Cessna
172M
Fixed-wing, single engine Empire Aviators LLC
Long Island City, New York
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N52635 Cessna
172P
Fixed-wing, single engine Individual owner
Colorado
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N593FL Piper
PA-28-140
Fixed-wing, single engine Empire Aviators LLC
Long Island City, New York
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N66JF Stewart Ray
RV 4 VANS ACFT INC
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N7384D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N7909G Cessna
172L
Fixed-wing, single engine Individual owner
Kentucky
Multiple 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N79432 Cessna
172K
Fixed-wing, single engine N7037G INC
Wilmington, Delaware
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N12878 Cessna
172M
Fixed-wing, single engine M&M Bear Necessities LLC
Newellton, Louisiana
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N26236 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Texas
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N302AV Piper
PA-28-161
Fixed-wing, single engine Ras Aviation LLC
Elyria, Ohio
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N36GG Allen-Michael
PITTS SPECIAL S-1S
Fixed-wing, single engine Individual owner
New Jersey
Experimental 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N4294Q Cessna
172L
Fixed-wing, single engine Optimized Aviation Services LLC
Huntington Station, New York
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N4720A Piper
PA-18-150
Fixed-wing, single engine P P & J LLC
Gillette, Wyoming
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N5732D Piper
PA-22-150
Fixed-wing, single engine Aerospace Center for Excellence INC
Lakeland, Florida
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N6845B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N6MX Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N315SQ Audet Alfred
VANS RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N3369T Cessna
177
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N3799K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N4512L Piper
PA-28-161
Fixed-wing, single engine A&J Aircraft Leasing INC
Burlington, Colorado
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N5057H Cessna
172M
Fixed-wing, single engine Ajf Enterprises LLC
Des Moines, Iowa
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N8053N Piper
PA-28-140
Fixed-wing, single engine Jump Ventures LLC
Key West, Florida
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N816WA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N88057 Bellanca
7GCBC
Fixed-wing, single engine Withheld at owner's request
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N2WB Bernard
THORP T-18B
Fixed-wing, single engine Individual owner
Michigan
Experimental 2024-12-07 ValidFAA registration status code V: Valid registration. All codes
N6688W Piper
PA-28-140
Fixed-wing, single engine Arkansas Air Expeditions and Instruction LLC
Greenbrier, Arkansas
Standard 2024-12-07 ValidFAA registration status code V: Valid registration. All codes
N28CM American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-12-06 ValidFAA registration status code V: Valid registration. All codes
N3833Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-12-06 ValidFAA registration status code V: Valid registration. All codes
N8034D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2024-12-06 ValidFAA registration status code V: Valid registration. All codes
N8316R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-12-06 ValidFAA registration status code V: Valid registration. All codes
N3558P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Florida
Standard 2024-12-05 ValidFAA registration status code V: Valid registration. All codes
N5317W Piper
PA-28
Fixed-wing, single engine Co-owned owner
California
Standard 2024-12-05 ValidFAA registration status code V: Valid registration. All codes
N988TS Heisdorffer Roger
RV9A
Fixed-wing, single engine Individual owner
Georgia
Experimental 2024-12-05 ValidFAA registration status code V: Valid registration. All codes
N9969U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Blair Denton Cassity III
Morehead, Kentucky
Standard 2024-12-05 ValidFAA registration status code V: Valid registration. All codes
N3131Z Piper
PA-22
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-12-04 ValidFAA registration status code V: Valid registration. All codes
N712L Piper
PA-18-150
Fixed-wing, single engine Dia Development LLC
Mesa, Arizona
Standard 2024-12-03 ValidFAA registration status code V: Valid registration. All codes
N7233J Piper
PA-28-140
Fixed-wing, single engine Individual owner
West Virginia
Standard 2024-12-03 ValidFAA registration status code V: Valid registration. All codes
N73371 Cessna
172M
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2024-12-03 ValidFAA registration status code V: Valid registration. All codes
N812CP Cessna
172N
Fixed-wing, single engine High Wing Air Services LLC
Merritt Island, Florida
Standard 2024-12-03 ValidFAA registration status code V: Valid registration. All codes
N8465C Piper
PA-28-140
Fixed-wing, single engine Flyzone LLC
Mount Laurel, New Jersey
Standard 2024-12-03 ValidFAA registration status code V: Valid registration. All codes
N1111L Verboski T W
PITTS S1C
Fixed-wing, single engine Individual owner
Washington
Experimental 2024-12-02 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.