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
N2891T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2021-03-31 ValidFAA registration status code V: Valid registration. All codes
N35456 Cessna
172I
Fixed-wing, single engine Wing Dock LLC
Miami, Oklahoma
Standard 2021-03-31 ValidFAA registration status code V: Valid registration. All codes
N3604K Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-03-31 ValidFAA registration status code V: Valid registration. All codes
N4217P Piper
PA-23-160
Fixed-wing, multi-engine International Air Services INC Trustee
Carson City, Nevada
Standard 2021-03-31 ValidFAA registration status code V: Valid registration. All codes
N64345 Cessna
172M
Fixed-wing, single engine Co-owned owner
California
Standard 2021-03-31 ValidFAA registration status code V: Valid registration. All codes
N987BB Voshell Frank
RV-4
Fixed-wing, single engine Time Building LLC
Lake Oswego, Oregon
Experimental 2021-03-31 ValidFAA registration status code V: Valid registration. All codes
N22429 Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N41700 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N4665R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N5861U Piper
PA-28-140
Fixed-wing, single engine Lasc Aviation INC
Callaway, Florida
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N7371L American
AA-5
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N912J Piper
PA-28-161
Fixed-wing, single engine Individual owner
Washington
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N9688S Champion
7GCAA
Fixed-wing, single engine Individual owner
Texas
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N9867J Cessna
172N
Fixed-wing, single engine Norby Aviation LLC
Hopkinton, Massachusetts
Standard 2021-03-30 ValidFAA registration status code V: Valid registration. All codes
N1433X Piper
PA-28-151
Fixed-wing, single engine Echota Flyers INC
Calhoun, Georgia
Standard 2021-03-29 ValidFAA registration status code V: Valid registration. All codes
N1947F Cessna
172N
Fixed-wing, single engine Melbourne Flight Training LLC
Melbourne, Florida
Standard 2021-03-27 ValidFAA registration status code V: Valid registration. All codes
N2931X Cessna
177
Fixed-wing, single engine Withheld at owner's request
Standard 2021-03-27 ValidFAA registration status code V: Valid registration. All codes
N44076 Piper
PA-28-151
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2021-03-25 ValidFAA registration status code V: Valid registration. All codes
N6553R Beech
B19
Fixed-wing, single engine Individual owner
California
Standard 2021-03-24 ValidFAA registration status code V: Valid registration. All codes
N95111 Piper
PA-28-140
Fixed-wing, single engine Tiny Tin Aviation LLC
Groveland, Florida
Standard 2021-03-24 ValidFAA registration status code V: Valid registration. All codes
N6223J Piper
PA-28-140
Fixed-wing, single engine Vanderstoel Alex T
Waterford, California
Standard 2021-03-23 ValidFAA registration status code V: Valid registration. All codes
N6429W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2021-03-23 ValidFAA registration status code V: Valid registration. All codes
N6604E Cessna
172N
Fixed-wing, single engine Flyn High Aviation LLC
Boynton Beach, Florida
Standard 2021-03-23 ValidFAA registration status code V: Valid registration. All codes
N780GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Prairie Planes LLC
Mitchell, South Dakota
Standard 2021-03-23 ValidFAA registration status code V: Valid registration. All codes
N9368D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-03-23 ValidFAA registration status code V: Valid registration. All codes
N7259F Piper
PA-28-151
Fixed-wing, single engine Learn 2 Fly Ct LLC
Simsbury, Connecticut
Standard 2021-03-22 ValidFAA registration status code V: Valid registration. All codes
N75598 Cessna
172N
Fixed-wing, single engine Columbia Jet Center INC
Columbia, Missouri
Standard 2021-03-22 ValidFAA registration status code V: Valid registration. All codes
N160TX Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
California
Standard 2021-03-20 ValidFAA registration status code V: Valid registration. All codes
N7231Q Cessna
172L
Fixed-wing, single engine Dsr-Cherokee 180 LLC
Dallas, Texas
Standard 2021-03-20 ValidFAA registration status code V: Valid registration. All codes
N84456 Cessna
172K
Fixed-wing, single engine Warbirds East INC
Fairhope, Alabama
Standard 2021-03-20 ValidFAA registration status code V: Valid registration. All codes
N102KC Pederson Gill A
RV-3A
Fixed-wing, single engine Co-owned owner
Texas
Experimental 2021-03-19 ValidFAA registration status code V: Valid registration. All codes
N1189C Piper
PA-18A
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N2351Y Cessna
177
Fixed-wing, single engine Toes In the Sand LLC
Bentonville, Arkansas
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N26855 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N4200Y Bellanca
7GCBC
Fixed-wing, single engine Texas Red Bird LLC
Palo Pinto, Texas
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N57361 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Arizona
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N7015G Cessna
172K
Fixed-wing, single engine Individual owner
New York
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N7072Q Cessna
172L
Fixed-wing, single engine B&R Aircraft LLC
Wadsworth, Ohio
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N7211J Piper
PA-28-140
Fixed-wing, single engine Golden Arrow Transportation
Plainfield, New Jersey
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N733QG Cessna
172N
Fixed-wing, single engine Carter Flygare INC
Sacramento, California
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N9019Q Piper
PA-28-151
Fixed-wing, single engine Syrasoft Aviation LLC
Baldwinsville, New York
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N9537S Champion
7GCAA
Fixed-wing, single engine Individual owner
Georgia
Standard 2021-03-18 ValidFAA registration status code V: Valid registration. All codes
N12038 Hasenbalg Russel
TAILWIND W-10
Fixed-wing, single engine Individual owner
Texas
Experimental 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N20666 Cessna
172M
Fixed-wing, single engine 20666 Aircraft Leasing LLC
Spanish Fork, Utah
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N2158A Piper
PA-18-135
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N26962 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Washington
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N4376Q Cessna
172L
Fixed-wing, single engine Individual owner
Colorado
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N47657 Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N53719 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Nevada
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N6110W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N6938D Piper
PA-22-150
Fixed-wing, single engine Individual owner
West Virginia
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N83580 Piper
PA-18-150
Fixed-wing, single engine Lazy Ye Cattle CO
Dodson, Montana
Standard 2021-03-17 ValidFAA registration status code V: Valid registration. All codes
N102AS Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine G&P Cheetah LLC
Honolulu, Hawaii
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N26917 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N29TL Piper
PA-28-151
Fixed-wing, single engine Tml Aircraft INC
Narrowsburg, New York
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N356ND Piper
PA-28-161
Fixed-wing, single engine Air Shares LLC
Casper, Wyoming
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N51297 Cessna
172M
Fixed-wing, single engine Individual owner
Oregon
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N5886D Piper
PA-18-150
Fixed-wing, single engine AG Solutions of West Texas LLC
Roby, Texas
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N6523D Cessna
172N
Fixed-wing, single engine Air Shares LLC
Casper, Wyoming
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N7292X Cessna
150B
Fixed-wing, single engine Individual owner
Washington
Standard 2021-03-16 ValidFAA registration status code V: Valid registration. All codes
N288GH Piper
PA-28-150
Fixed-wing, single engine Co-owned owner
Louisiana
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N3239E Cessna
172N
Fixed-wing, single engine Leaf Air LLC
Queensbury, New York
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N733NC Cessna
172N
Fixed-wing, single engine Rrgsoftware LLC
Alpine, California
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N734VN Cessna
172N
Fixed-wing, single engine Kcsi Aerial Patrol INC
Bakersfield, California
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N737LH Cessna
172N
Fixed-wing, single engine Centerline Aviation LLC
Fredericksburg, Virginia
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N901HR American Champion Aircraft
7GCBC
Fixed-wing, single engine Kcsi Aerial Patrol INC
Bakersfield, California
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N95211 Piper
PA-28-140
Fixed-wing, single engine Massey Aviation LLC
Ashburn, Georgia
Standard 2021-03-15 ValidFAA registration status code V: Valid registration. All codes
N1488U Cessna
172M
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2021-03-13 ValidFAA registration status code V: Valid registration. All codes
N20398 Cessna
172M
Fixed-wing, single engine Individual owner
Utah
Standard 2021-03-13 ValidFAA registration status code V: Valid registration. All codes
N22VB Beltram Victor R
GLASAIR-TD
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2021-03-13 ValidFAA registration status code V: Valid registration. All codes
N23291 Cessna
172M
Fixed-wing, single engine Oracle Aviation LLC
Omaha, Nebraska
Standard 2021-03-13 ValidFAA registration status code V: Valid registration. All codes
N4083E Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-03-13 ValidFAA registration status code V: Valid registration. All codes
N4301Q Cessna
172L
Fixed-wing, single engine Individual owner
Michigan
Standard 2021-03-13 ValidFAA registration status code V: Valid registration. All codes
N94DB Blanton David L
ACRO SPORT II
Fixed-wing, single engine Individual owner
New Jersey
Experimental 2021-03-13 ValidFAA registration status code V: Valid registration. All codes
N11657 Bellanca
7GCBC
Fixed-wing, single engine Co-owned owner
Indiana
Standard 2021-03-12 ValidFAA registration status code V: Valid registration. All codes
N3352Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2021-03-12 ValidFAA registration status code V: Valid registration. All codes
N5426F Piper
PA-28-151
Fixed-wing, single engine Pressley Aviation LLC
New London, North Carolina
Standard 2021-03-12 ValidFAA registration status code V: Valid registration. All codes
N61607 Cessna
172M
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2021-03-12 ValidFAA registration status code V: Valid registration. All codes
N64270 Cessna
172M
Fixed-wing, single engine Sundance Aviation INC
Richland, Washington
Standard 2021-03-12 ValidFAA registration status code V: Valid registration. All codes
N7561K Piper
PA-18
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-03-12 ValidFAA registration status code V: Valid registration. All codes
N96836 Cessna
172P
Fixed-wing, single engine Visalia Flyers LLC
Visalia, California
Standard 2021-03-12 ValidFAA registration status code V: Valid registration. All codes
N9837L Cessna
172P
Fixed-wing, single engine Ial CORP
Wilmington, Delaware
Standard 2021-03-12 ValidFAA registration status code V: Valid registration. All codes
N20431 Cessna
172M
Fixed-wing, single engine Organization of Black Aerospace Professionals
Westchester, Illinois
Standard 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N20DK Cessna
172M
Fixed-wing, single engine Flight Surgeon LLC
Fayetteville, Arkansas
Standard 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N318FC Piper
PA-28-140
Fixed-wing, single engine Individual owner
Hawaii
Standard 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N3992P Piper
PA-18A 150
Fixed-wing, single engine Air Bear Aviation INC
North Hampton, New Hampshire
Standard 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N42035 Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N78DF Frazier Donald E
THORP T-18
Fixed-wing, single engine Individual owner
Texas
Experimental 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N8619E Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N9639W Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Dakota
Standard 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N9944D Piper
PA-18A
Fixed-wing, single engine Red Baron LLC
Dickinson, North Dakota
Multiple 2021-03-11 ValidFAA registration status code V: Valid registration. All codes
N13MR Robbins Wesley M
RV-4
Fixed-wing, single engine Individual owner
Kansas
Experimental 2021-03-10 ValidFAA registration status code V: Valid registration. All codes
N1895K Maule
MX-7-160
Fixed-wing, single engine Co-owned owner
Florida
Standard 2021-03-10 ValidFAA registration status code V: Valid registration. All codes
N2081C Piper
PA-28-161
Fixed-wing, single engine Trident Aircraft INC
Easton, Maryland
Standard 2021-03-10 ValidFAA registration status code V: Valid registration. All codes
N40558 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-03-10 ValidFAA registration status code V: Valid registration. All codes
N4252Z Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
California
Multiple 2021-03-10 ValidFAA registration status code V: Valid registration. All codes
N45CL Littleton David A
TWINSTAR
Fixed-wing, single engine Individual owner
Indiana
Experimental 2021-03-10 ValidFAA registration status code V: Valid registration. All codes
N47899 Piper
PA-28-161
Fixed-wing, single engine Nationwide Aviation LLC
Hudson Oaks, Texas
Standard 2021-03-10 ValidFAA registration status code V: Valid registration. All codes
N5429L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Gardner T Larry
Dickson, Tennessee
Standard 2021-03-10 ValidFAA registration status code V: Valid registration. All codes
N9163Z Piper
PA-28-161
Fixed-wing, single engine Trident Aircraft INC
Easton, Maryland
Standard 2021-03-10 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.