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
N29HL Cessna
172M
Fixed-wing, single engine Individual owner
Alabama
Standard 2020-01-02 ValidFAA registration status code V: Valid registration. All codes
N3273E Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2020-01-02 ValidFAA registration status code V: Valid registration. All codes
N5660S Beech
A23-19
Fixed-wing, single engine Individual owner
Texas
Standard 2020-01-02 ValidFAA registration status code V: Valid registration. All codes
N64309 Cessna
172M
Fixed-wing, single engine Individual owner
Kentucky
Standard 2020-01-02 ValidFAA registration status code V: Valid registration. All codes
N81250 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2020-01-02 ValidFAA registration status code V: Valid registration. All codes
N24CV Cessna
172N
Fixed-wing, single engine Pacific Air Flight School LLC
Long Beach, California
Standard 2019-12-31 ValidFAA registration status code V: Valid registration. All codes
N4209Q Cessna
172L
Fixed-wing, single engine Lakeland Aviation of Minocqua INC
Minocqua, Wisconsin
Standard 2019-12-31 ValidFAA registration status code V: Valid registration. All codes
N4402R Cessna
172M
Fixed-wing, single engine Avel Aircraft INC
West Chicago, Illinois
Standard 2019-12-31 ValidFAA registration status code V: Valid registration. All codes
N5789D Piper
PA-22-150
Fixed-wing, single engine Tripacer Bretheren LLC
Longview, Washington
Standard 2019-12-31 ValidFAA registration status code V: Valid registration. All codes
N6204W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2019-12-31 ValidFAA registration status code V: Valid registration. All codes
N626BA Sloan Alex
RV-6
Fixed-wing, single engine Individual owner
Alabama
Experimental 2019-12-31 ValidFAA registration status code V: Valid registration. All codes
N97DJ Baker Douglas H
VANS RV-6A
Fixed-wing, single engine Individual owner
California
Experimental 2019-12-31 ValidFAA registration status code V: Valid registration. All codes
N15741 Piper
PA-28-180
Fixed-wing, single engine Jps Flight School LLC
Salem, Oregon
Standard 2019-12-30 ValidFAA registration status code V: Valid registration. All codes
N2396Y Cessna
177
Fixed-wing, single engine Individual owner
Missouri
Standard 2019-12-30 ValidFAA registration status code V: Valid registration. All codes
N4505R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-12-30 ValidFAA registration status code V: Valid registration. All codes
N5508L Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Oregon
Standard 2019-12-30 ValidFAA registration status code V: Valid registration. All codes
N711FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2019-12-30 ValidFAA registration status code V: Valid registration. All codes
N8098N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2019-12-30 ValidFAA registration status code V: Valid registration. All codes
N3116 Proctor-Varner-Austin
CLIP WING DART
Fixed-wing, single engine Individual owner
New York
Experimental 2019-12-27 ValidFAA registration status code V: Valid registration. All codes
N4908P Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Restricted 2019-12-27 ValidFAA registration status code V: Valid registration. All codes
N6791W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2019-12-27 ValidFAA registration status code V: Valid registration. All codes
N172WA Cessna
172N
Fixed-wing, single engine Co-owned owner
California
Standard 2019-12-26 ValidFAA registration status code V: Valid registration. All codes
N18141 Piper
PA-18
Fixed-wing, single engine Individual owner
Texas
Standard 2019-12-26 ValidFAA registration status code V: Valid registration. All codes
N3551Q Cessna
172M
Fixed-wing, single engine Individual owner
Tennessee
Standard 2019-12-26 ValidFAA registration status code V: Valid registration. All codes
N83359 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Montana
Standard 2019-12-26 ValidFAA registration status code V: Valid registration. All codes
N894RV Benedict W R/Morton S R
RV-4
Fixed-wing, single engine Individual owner
Washington
Experimental 2019-12-26 ValidFAA registration status code V: Valid registration. All codes
N5552E Cessna
172N
Fixed-wing, single engine Above and Beyond Aviation LLC
Austin, Texas
Standard 2019-12-23 ValidFAA registration status code V: Valid registration. All codes
N5964F Piper
PA-28-151
Fixed-wing, single engine Individual owner
Mississippi
Standard 2019-12-23 ValidFAA registration status code V: Valid registration. All codes
N62502 Cessna
172P
Fixed-wing, single engine Individual owner
Texas
Standard 2019-12-23 ValidFAA registration status code V: Valid registration. All codes
N739MJ Cessna
172N
Fixed-wing, single engine Plane Nuts Aviation LLC
Livingston, Louisiana
Standard 2019-12-23 ValidFAA registration status code V: Valid registration. All codes
N8284J Varga Aircraft Corp.
2150A
Fixed-wing, single engine Individual owner
Colorado
Standard 2019-12-23 ValidFAA registration status code V: Valid registration. All codes
N92356 Cessna
172M
Fixed-wing, single engine Hub City Aviation Academy LLC
Lubbock, Texas
Standard 2019-12-23 ValidFAA registration status code V: Valid registration. All codes
N9514L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2019-12-20 ValidFAA registration status code V: Valid registration. All codes
N1487U Cessna
172M
Fixed-wing, single engine Individual owner
Washington
Standard 2019-12-19 ValidFAA registration status code V: Valid registration. All codes
N160T Piper
PA-28-161
Fixed-wing, single engine Individual owner
Ohio
Standard 2019-12-19 ValidFAA registration status code V: Valid registration. All codes
N228AR Cessna
172N
Fixed-wing, single engine Hurricane Creek Flying Club LLC
Walla Walla, Washington
Standard 2019-12-19 ValidFAA registration status code V: Valid registration. All codes
N54470 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-12-19 ValidFAA registration status code V: Valid registration. All codes
N5855L American
AA-5
Fixed-wing, single engine Individual owner
Kansas
Standard 2019-12-19 ValidFAA registration status code V: Valid registration. All codes
N6301W Piper
PA-28-140
Fixed-wing, single engine Kap Title INC
Tucker, Georgia
Standard 2019-12-19 ValidFAA registration status code V: Valid registration. All codes
N6371W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2019-12-19 ValidFAA registration status code V: Valid registration. All codes
N73398 Cessna
172M
Fixed-wing, single engine Wintons Wings LLC
Bardstown, Kentucky
Standard 2019-12-19 ValidFAA registration status code V: Valid registration. All codes
N8081D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2019-12-19 ValidFAA registration status code V: Valid registration. All codes
N134JB Bengston Jim
RV-6
Fixed-wing, single engine Individual owner
Colorado
Experimental 2019-12-18 ValidFAA registration status code V: Valid registration. All codes
N2084P Piper
PA-23
Fixed-wing, multi-engine Individual owner
Kentucky
Standard 2019-12-18 ValidFAA registration status code V: Valid registration. All codes
N4100Y Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-12-18 ValidFAA registration status code V: Valid registration. All codes
N5158Q Cessna
172M
Fixed-wing, single engine Individual owner
Mississippi
Standard 2019-12-18 ValidFAA registration status code V: Valid registration. All codes
N5402E Cessna
172N
Fixed-wing, single engine Osprey Holding Company LLC
Foley, Alabama
Standard 2019-12-18 ValidFAA registration status code V: Valid registration. All codes
N65180 Cessna
172P
Fixed-wing, single engine Individual owner
Texas
Standard 2019-12-18 ValidFAA registration status code V: Valid registration. All codes
N8058V Weyant Charles
RV9A
Fixed-wing, single engine Co-owned owner
California
Experimental 2019-12-18 ValidFAA registration status code V: Valid registration. All codes
N9347H Cessna
172M
Fixed-wing, single engine Wings Like Eagles LLC
Wilmington, Delaware
Standard 2019-12-18 ValidFAA registration status code V: Valid registration. All codes
N96792 Cessna
172P
Fixed-wing, single engine N96792 LLC
Shrewsbury, Massachusetts
Standard 2019-12-18 ValidFAA registration status code V: Valid registration. All codes
N2348J Beech
23
Fixed-wing, single engine Individual owner
Vermont
Standard 2019-12-17 ValidFAA registration status code V: Valid registration. All codes
N257FK Cessna
172N
Fixed-wing, single engine 257Fk LLC
Marathon, Florida
Standard 2019-12-17 ValidFAA registration status code V: Valid registration. All codes
N3157Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2019-12-17 ValidFAA registration status code V: Valid registration. All codes
N7034G Cessna
172K
Fixed-wing, single engine Fat Tyre Flyers LLC
Moses Lake, Washington
Standard 2019-12-17 ValidFAA registration status code V: Valid registration. All codes
N738FA Cessna
172N
Fixed-wing, single engine Fly Maui LLC
Puunene, Hawaii
Standard 2019-12-17 ValidFAA registration status code V: Valid registration. All codes
N88214 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Georgia
Standard 2019-12-17 ValidFAA registration status code V: Valid registration. All codes
N89TG Graham Terry
STARDUSTER SA-100
Fixed-wing, single engine Individual owner
New York
Experimental 2019-12-17 ValidFAA registration status code V: Valid registration. All codes
N989RV Benjamin Samuel H
RV-9A
Fixed-wing, single engine Individual owner
Nebraska
Experimental 2019-12-17 ValidFAA registration status code V: Valid registration. All codes
N20560 Cessna
172M
Fixed-wing, single engine Individual owner
South Dakota
Standard 2019-12-16 ValidFAA registration status code V: Valid registration. All codes
N33520 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Illinois
Standard 2019-12-16 ValidFAA registration status code V: Valid registration. All codes
N422WG Piper
PA-28-161
Fixed-wing, single engine Individual owner
Indiana
Standard 2019-12-16 ValidFAA registration status code V: Valid registration. All codes
N558J Vetterman Larry D
RV-4
Fixed-wing, single engine Individual owner
Missouri
Experimental 2019-12-16 ValidFAA registration status code V: Valid registration. All codes
N6313W Piper
PA-28-140
Fixed-wing, single engine Flight Plan LLC
Friendswood, Texas
Standard 2019-12-16 ValidFAA registration status code V: Valid registration. All codes
N642WZ Wallace Donald A
RV9A
Fixed-wing, single engine Map Enterprises INC
Mayfield, Kentucky
Experimental 2019-12-16 ValidFAA registration status code V: Valid registration. All codes
N6587E Cessna
172N
Fixed-wing, single engine G & M Aircraft INC
Wheat Ridge, Colorado
Standard 2019-12-16 ValidFAA registration status code V: Valid registration. All codes
N883C Piper
PA-28-140
Fixed-wing, single engine Individual owner
Iowa
Standard 2019-12-16 ValidFAA registration status code V: Valid registration. All codes
N57309 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2019-12-13 ValidFAA registration status code V: Valid registration. All codes
N3572Q Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2019-12-12 ValidFAA registration status code V: Valid registration. All codes
N90839 Craver
EAA BIPLANE
Fixed-wing, single engine Individual owner
Texas
Experimental 2019-12-12 ValidFAA registration status code V: Valid registration. All codes
N990B Cessna
172N
Fixed-wing, single engine Flight Academy LLC
Van Nuys, California
Standard 2019-12-12 ValidFAA registration status code V: Valid registration. All codes
N107RA Cessna
172M
Fixed-wing, single engine Rl Aviation LLC
Miami, Florida
Standard 2019-12-11 ValidFAA registration status code V: Valid registration. All codes
N2501G Champion
7GCAA
Fixed-wing, single engine N2501G LLC
Columbia, California
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N345LH Robinson Helicopter
R22 BETA
Helicopter Smoketown Helicopters LLC
Smoketown, Pennsylvania
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N3669N Piper
PA-12
Fixed-wing, single engine Co-owned owner
North Dakota
Restricted 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N3875Q Cessna
172L
Fixed-wing, single engine Aerial Scouting Solutions LLC
Sioux Center, Iowa
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N3919Q Cessna
172L
Fixed-wing, single engine Minot Aero Center
Minot, North Dakota
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N5399 Fleming Ray J
GLASTAR
Fixed-wing, single engine Individual owner
Louisiana
Experimental 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N5405L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Louisiana
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N738WE Cessna
172N
Fixed-wing, single engine Bray Aviation LLC
Calera, Oklahoma
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N7680G Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N79NA Piper
PA-28-161
Fixed-wing, single engine Northampton Aeronautics INC
Northampton, Massachusetts
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N9385L Cessna
172P
Fixed-wing, single engine Fixed Wing Holding CO INC
Pembroke Pines, Florida
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N9745W Piper
PA-28-140
Fixed-wing, single engine Individual owner
North Carolina
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N9749D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N9843W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N9925V Cessna
172M
Fixed-wing, single engine Co-owned owner
Florida
Standard 2019-12-10 ValidFAA registration status code V: Valid registration. All codes
N2510H Piper
PA-18-150
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-12-09 ValidFAA registration status code V: Valid registration. All codes
N5799F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2019-12-09 ValidFAA registration status code V: Valid registration. All codes
N7194Q Cessna
172L
Fixed-wing, single engine Ozarks Auto Show INC
Hollister, Missouri
Standard 2019-12-09 ValidFAA registration status code V: Valid registration. All codes
N738WG Cessna
172N
Fixed-wing, single engine Individual owner
Minnesota
Standard 2019-12-09 ValidFAA registration status code V: Valid registration. All codes
N8909 Piper
PA-28-140
Fixed-wing, single engine N8909 LLC
Minden, Nevada
Standard 2019-12-09 ValidFAA registration status code V: Valid registration. All codes
N9649V Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2019-12-09 ValidFAA registration status code V: Valid registration. All codes
N172WP Cessna
172M
Fixed-wing, single engine Aviair LLC
Wilmington, North Carolina
Standard 2019-12-06 ValidFAA registration status code V: Valid registration. All codes
N7082G Cessna
172K
Fixed-wing, single engine Bbt INC
Wilmington, Delaware
Standard 2019-12-06 ValidFAA registration status code V: Valid registration. All codes
N9665V Cessna
172M
Fixed-wing, single engine Aircraftsmen LLC
Heber City, Utah
Standard 2019-12-06 ValidFAA registration status code V: Valid registration. All codes
N3411Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2019-12-05 ValidFAA registration status code V: Valid registration. All codes
N3806Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2019-12-05 ValidFAA registration status code V: Valid registration. All codes
N4657Q Cessna
172M
Fixed-wing, single engine Saddle Mountain LLC
Cave Creek, Arizona
Standard 2019-12-05 ValidFAA registration status code V: Valid registration. All codes
N7061Q Cessna
172L
Fixed-wing, single engine Individual owner
Kentucky
Standard 2019-12-05 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.