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
N4463A Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Texas
Standard 2022-10-04 ValidFAA registration status code V: Valid registration. All codes
N54452 Cessna
172P
Fixed-wing, single engine Individual owner
Virginia
Standard 2022-10-04 ValidFAA registration status code V: Valid registration. All codes
N5584F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2022-10-04 ValidFAA registration status code V: Valid registration. All codes
N64MM Miller Robert B
RV6
Fixed-wing, single engine Individual owner
California
Experimental 2022-10-04 ValidFAA registration status code V: Valid registration. All codes
N733DP Cessna
172N
Fixed-wing, single engine Niemi Aviation LLC
Glyndon, Minnesota
Standard 2022-10-04 ValidFAA registration status code V: Valid registration. All codes
N7693G Cessna
172L
Fixed-wing, single engine A J L M Partners LLC
Hershey, Nebraska
Standard 2022-10-04 ValidFAA registration status code V: Valid registration. All codes
N7807G Cessna
172L
Fixed-wing, single engine Lake of the Woods Aviation LLC
Baudette, Minnesota
Standard 2022-10-04 ValidFAA registration status code V: Valid registration. All codes
N8092N Piper
PA-28-140
Fixed-wing, single engine Cash Management Consulting LLC
Granite Springs, New York
Standard 2022-10-04 ValidFAA registration status code V: Valid registration. All codes
N1823J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N3914M Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N444BL Champion
7GCAA
Fixed-wing, single engine Tri Air LLC
Monette, Arkansas
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N5789F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N7368L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N737CZ Cessna
172N
Fixed-wing, single engine Mt Vernon Airport Authority
Mount Vernon, Illinois
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N79060 Cessna
172K
Fixed-wing, single engine K&L Aviation LLC
Prosper, Texas
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N79147 Cessna
172K
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N8192C Piper
PA-18-150
Fixed-wing, single engine D&K Aviation INC
Milford, Iowa
Multiple 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N8724M Beech
23
Fixed-wing, single engine Individual owner
Kansas
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N9376M Cessna
172L
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N9878G Cessna
172L
Fixed-wing, single engine Royal Aviation Academy LLC
Sarasota, Florida
Standard 2022-10-03 ValidFAA registration status code V: Valid registration. All codes
N11690 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2022-10-01 ValidFAA registration status code V: Valid registration. All codes
N2475P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Nebraska
Standard 2022-10-01 ValidFAA registration status code V: Valid registration. All codes
N41954 Piper
PA-28-151
Fixed-wing, single engine Up and Up Aviation LLC
Magnolia, Texas
Standard 2022-10-01 ValidFAA registration status code V: Valid registration. All codes
N44125 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Hawaii
Standard 2022-10-01 ValidFAA registration status code V: Valid registration. All codes
N64390 Cessna
172P
Fixed-wing, single engine Individual owner
Maryland
Standard 2022-10-01 ValidFAA registration status code V: Valid registration. All codes
N5067W Piper
PA-28
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-09-30 ValidFAA registration status code V: Valid registration. All codes
N1272A Piper
PA-18
Fixed-wing, single engine Individual owner
Arizona
Multiple 2022-09-29 ValidFAA registration status code V: Valid registration. All codes
N81BS Waggy Gene
STARDUSTER SA-300
Fixed-wing, single engine Individual owner
Georgia
Experimental 2022-09-29 ValidFAA registration status code V: Valid registration. All codes
N1933W Beech
B19
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-09-28 ValidFAA registration status code V: Valid registration. All codes
N211KS Steggerda Kim
VANS ACFT RV6
Fixed-wing, single engine Individual owner
Indiana
Experimental 2022-09-28 ValidFAA registration status code V: Valid registration. All codes
N697YA Piper
PA-28-140
Fixed-wing, single engine Horizon Flyers LLC
Kingsford, Michigan
Standard 2022-09-28 ValidFAA registration status code V: Valid registration. All codes
N7161G Cessna
172K
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2022-09-28 ValidFAA registration status code V: Valid registration. All codes
N98269 Piper
PA-28-140
Fixed-wing, single engine B&R Aircraft LLC
Wadsworth, Ohio
Standard 2022-09-28 ValidFAA registration status code V: Valid registration. All codes
N12923 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N19861 Cessna
172M
Fixed-wing, single engine Individual owner
Tennessee
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N2421S Piper
PA-18-150
Fixed-wing, single engine W Grotendiek LLC
Portland, Oregon
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N288FD Piper
PA-28-140
Fixed-wing, single engine Fly Dynasty CORP
Ocala, Florida
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N3833Q Cessna
172L
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N406AC American Champion Aircraft
7GCAA
Fixed-wing, single engine Individual owner
Tennessee
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N4432R Cessna
172M
Fixed-wing, single engine Bend Aircraft Mechanics LLC
Bend, Oregon
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N46462 Cessna
172K
Fixed-wing, single engine Cook Aviation Services LLC
Fargo, North Dakota
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N4711J Beech
A23-19
Fixed-wing, single engine Individual owner
Arkansas
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N6727A Piper
PA-18-150
Fixed-wing, single engine Wolf Cub Aviation LLC
Wasilla, Alaska
Multiple 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N722AA Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N828LS Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
New York
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N9551D Piper
PA-22-160
Fixed-wing, single engine Hhd Aviation LLC
Hamilton, Ohio
Standard 2022-09-27 ValidFAA registration status code V: Valid registration. All codes
N5923W Piper
PA-28-150
Fixed-wing, single engine Premier Pilots LLC
Herriman, Utah
Standard 2022-09-26 ValidFAA registration status code V: Valid registration. All codes
N64792 Cessna
172P
Fixed-wing, single engine Air Sal Leasing INC
Fort Myers, Florida
Standard 2022-09-26 ValidFAA registration status code V: Valid registration. All codes
N6723W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-09-26 ValidFAA registration status code V: Valid registration. All codes
N9547D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-09-26 ValidFAA registration status code V: Valid registration. All codes
N56SE Wiza Joseph D
RV-6A
Fixed-wing, single engine Individual owner
California
Experimental 2022-09-24 ValidFAA registration status code V: Valid registration. All codes
N19FN Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2022-09-23 ValidFAA registration status code V: Valid registration. All codes
N33JJ American
AA-5
Fixed-wing, single engine Fincor INC
Miami Beach, Florida
Standard 2022-09-23 ValidFAA registration status code V: Valid registration. All codes
N5569M Aero Commander
100
Fixed-wing, single engine Wichita Flight Training LLC
Wichita, Kansas
Standard 2022-09-23 ValidFAA registration status code V: Valid registration. All codes
N62287 Cessna
172P
Fixed-wing, single engine Glidewell Aviation INC
Parkland, Florida
Standard 2022-09-23 ValidFAA registration status code V: Valid registration. All codes
N6725J Piper
PA-28-140
Fixed-wing, single engine Brookeridge Eagles LLC
Downers Grove, Illinois
Standard 2022-09-23 ValidFAA registration status code V: Valid registration. All codes
N140SN Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N2274P Cessna
172M
Fixed-wing, single engine Avaero LLC
Worthington, Ohio
Standard 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N26KA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N290VG Piper
PA-23
Fixed-wing, multi-engine Co-owned owner
California
Standard 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N3374Z Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N3952Q Cessna
172L
Fixed-wing, single engine Lloyds 172 LLC
Moore, Oklahoma
Standard 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N40904 Piper
PA-28-151
Fixed-wing, single engine Allred Klein Enterprise LLC
San Diego, California
Standard 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N6053Z Piper
PA-25
Fixed-wing, single engine Individual owner
Virginia
Restricted 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N7060Q Cessna
172L
Fixed-wing, single engine Pilot In Command Academy INC
Miami, Florida
Standard 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N9685D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Arkansas
Standard 2022-09-22 ValidFAA registration status code V: Valid registration. All codes
N13494 Cessna
172M
Fixed-wing, single engine Individual owner
Louisiana
Standard 2022-09-21 ValidFAA registration status code V: Valid registration. All codes
N2012E Cessna
172N
Fixed-wing, single engine Airgo INC
Centralia, Illinois
Standard 2022-09-21 ValidFAA registration status code V: Valid registration. All codes
N2291Y Cessna
177
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-09-21 ValidFAA registration status code V: Valid registration. All codes
N5830W Piper
PA-28-160
Fixed-wing, single engine Ward Orval G
Bentonville, Arkansas
Standard 2022-09-21 ValidFAA registration status code V: Valid registration. All codes
N600VV Cessna
172M
Fixed-wing, single engine Mindy Limited LLC
Muscatine, Iowa
Standard 2022-09-21 ValidFAA registration status code V: Valid registration. All codes
N6435D Cessna
172N
Fixed-wing, single engine Marion Military Institute
Marion, Alabama
Standard 2022-09-21 ValidFAA registration status code V: Valid registration. All codes
N1213T Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2022-09-20 ValidFAA registration status code V: Valid registration. All codes
N2660A Piper
PA-18A
Fixed-wing, single engine N62689 INC
Texarkana, Texas
Standard 2022-09-20 ValidFAA registration status code V: Valid registration. All codes
N2807E Cessna
172N
Fixed-wing, single engine Mission One LLC
Excelsior, Minnesota
Standard 2022-09-20 ValidFAA registration status code V: Valid registration. All codes
N32556 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-09-20 ValidFAA registration status code V: Valid registration. All codes
N4549R Piper
PA-28-140
Fixed-wing, single engine Hamburg Airport 1 LLC
Williamsville, New York
Standard 2022-09-20 ValidFAA registration status code V: Valid registration. All codes
N46457 Cessna
172K
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-09-20 ValidFAA registration status code V: Valid registration. All codes
N55301 Piper
PA-28-140
Fixed-wing, single engine
Standard 2022-09-20 ValidFAA registration status code V: Valid registration. All codes
N9114T Beech
19A
Fixed-wing, single engine Flying Frog Aviation LLC
Palm City, Florida
Standard 2022-09-20 ValidFAA registration status code V: Valid registration. All codes
N1968S Thurston
TSC-1A1
Fixed-wing, single engine Warbird Adventures INC
Ocoee, Florida
Standard 2022-09-19 ValidFAA registration status code V: Valid registration. All codes
N3218T Cessna
177
Fixed-wing, single engine Co-owned owner
Kentucky
Standard 2022-09-19 ValidFAA registration status code V: Valid registration. All codes
N320JH Harden Jeffrey D
HARDEN 320
Fixed-wing, single engine Individual owner
Idaho
Experimental 2022-09-17 ValidFAA registration status code V: Valid registration. All codes
N3212T Cessna
177
Fixed-wing, single engine Individual owner
Florida
Standard 2022-09-17 ValidFAA registration status code V: Valid registration. All codes
N4062E Piper
PA-18-150
Fixed-wing, single engine Reimler Dan T
Rozet, Wyoming
Standard 2022-09-17 ValidFAA registration status code V: Valid registration. All codes
N64061 Cessna
172M
Fixed-wing, single engine Stark Glenn M
Nampa, Idaho
Standard 2022-09-17 ValidFAA registration status code V: Valid registration. All codes
N7261Q Cessna
172L
Fixed-wing, single engine Schilling Aviation Services LLC
Salina, Kansas
Standard 2022-09-17 ValidFAA registration status code V: Valid registration. All codes
N79268 Cessna
172K
Fixed-wing, single engine Individual owner
Colorado
Standard 2022-09-17 ValidFAA registration status code V: Valid registration. All codes
N3248P Piper
PA-23-160
Fixed-wing, multi-engine Aero Spectra CORP
Boulder, Colorado
Standard 2022-09-16 ValidFAA registration status code V: Valid registration. All codes
N3328Q Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2022-09-16 ValidFAA registration status code V: Valid registration. All codes
N6454G Cessna
172N
Fixed-wing, single engine Individual owner
Maine
Standard 2022-09-16 ValidFAA registration status code V: Valid registration. All codes
N8205A Piper
PA-28-161
Fixed-wing, single engine Pilot Place LLC
Sarasota, Florida
Standard 2022-09-16 ValidFAA registration status code V: Valid registration. All codes
N2354T Robinson Helicopter
R22 BETA
Helicopter Individual owner
California
Standard 2022-09-15 ValidFAA registration status code V: Valid registration. All codes
N75352 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2022-09-15 ValidFAA registration status code V: Valid registration. All codes
N140HA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2022-09-14 ValidFAA registration status code V: Valid registration. All codes
N2329W Beech
A23-19
Fixed-wing, single engine Individual owner
Texas
Standard 2022-09-14 ValidFAA registration status code V: Valid registration. All codes
N3985Q Cessna
172L
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-09-14 ValidFAA registration status code V: Valid registration. All codes
N6520Z Piper
PA-25
Fixed-wing, single engine Individual owner
South Dakota
Restricted 2022-09-14 ValidFAA registration status code V: Valid registration. All codes
N6822W Piper
PA-28-140
Fixed-wing, single engine Ajf Enterprises LLC
Des Moines, Iowa
Standard 2022-09-14 ValidFAA registration status code V: Valid registration. All codes
N737GL Cessna
172N
Fixed-wing, single engine Flying Panthers Flight School INC
Citrus Heights, California
Standard 2022-09-14 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.