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
N8871D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Washington
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N91JV Piper
PA-28-151
Fixed-wing, single engine Jv Aviation Group INC
La Puente, California
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N9850U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N388ME Piper
PA-23
Fixed-wing, multi-engine Trinity Aviation Group LLC
Hudson Oaks, Texas
Standard 2022-12-13 ValidFAA registration status code V: Valid registration. All codes
N646SB Johnson Arden R
RV-4
Fixed-wing, single engine Individual owner
Kansas
Experimental 2022-12-13 ValidFAA registration status code V: Valid registration. All codes
N13405 Cessna
172M
Fixed-wing, single engine Kelley Aircraft LLC
Weyers Cave, Virginia
Standard 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N164SP Leischer Charles M
VANS RV-6
Fixed-wing, single engine Individual owner
Florida
Experimental 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N2449E Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Ohio
Standard 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N2830X Cessna
177
Fixed-wing, single engine Individual owner
Kentucky
Standard 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N3054L Piper
PA-28-161
Fixed-wing, single engine Nationwide Aviation LLC
Hudson Oaks, Texas
Standard 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N39994 Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N41421 Piper
PA-28-151
Fixed-wing, single engine Blue Angel Properties LLC
Poland, Ohio
Standard 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N722GA Grumman American Avn. Corp.
GA-7
Fixed-wing, multi-engine Cougar Ga-7 LLC
Helena, Montana
Standard 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N79227 Cessna
172K
Fixed-wing, single engine Elkins Pilots Club
Elkins, West Virginia
Standard 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N80189 Cessna
172M
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N13451 Cessna
172M
Fixed-wing, single engine Individual owner
Nebraska
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N1432M Piper
PA-23
Fixed-wing, multi-engine Individual owner
Alaska
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N2863Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N2991P Piper
PA-18-150
Fixed-wing, single engine Individual owner
South Dakota
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N43214 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Florida
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N4506A Piper
PA-22-150
Fixed-wing, single engine Pennsylvania College of Technology
Williamsport, Pennsylvania
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N513RJ Everett Elmo
RV 6A
Fixed-wing, single engine Co-owned owner
Missouri
Experimental 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N5243E Cessna
172N
Fixed-wing, single engine California Professional Flyers INC
Murrieta, California
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N6716W Piper
PA-28-140
Fixed-wing, single engine San Diego Community College District
San Diego, California
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N7243F Piper
PA-28-140
Fixed-wing, single engine Black Diamond Real Estate
Roseville, California
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N1431A Piper
PA-22
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-12-09 ValidFAA registration status code V: Valid registration. All codes
N26949 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Kentucky
Standard 2022-12-09 ValidFAA registration status code V: Valid registration. All codes
N64431 Cessna
172M
Fixed-wing, single engine Coordinated Flight Training LLC
Grain Valley, Missouri
Standard 2022-12-09 ValidFAA registration status code V: Valid registration. All codes
N7828D Piper
PA-22-150
Fixed-wing, single engine Individual owner
New York
Standard 2022-12-09 ValidFAA registration status code V: Valid registration. All codes
N8581D Piper
PA-18A 150
Fixed-wing, single engine Dutch Air LLC
Kalispell, Montana
Multiple 2022-12-09 ValidFAA registration status code V: Valid registration. All codes
N9636V Cessna
172M
Fixed-wing, single engine Naperville Flying Club
Woodridge, Illinois
Standard 2022-12-09 ValidFAA registration status code V: Valid registration. All codes
N9701U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-12-09 ValidFAA registration status code V: Valid registration. All codes
N12820 Cessna
172M
Fixed-wing, single engine US Aviation Group LLC
Denton, Texas
Standard 2022-12-08 ValidFAA registration status code V: Valid registration. All codes
N12955 Cessna
172M
Fixed-wing, single engine American Patrols INC
Midland, Texas
Standard 2022-12-08 ValidFAA registration status code V: Valid registration. All codes
N2281Q Piper
PA-28-161
Fixed-wing, single engine Individual owner
Ohio
Standard 2022-12-08 ValidFAA registration status code V: Valid registration. All codes
N2918Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Texas
Standard 2022-12-08 ValidFAA registration status code V: Valid registration. All codes
N35651 Cessna
172I
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-12-08 ValidFAA registration status code V: Valid registration. All codes
N55325 Cessna
172P
Fixed-wing, single engine Individual owner
Ohio
Standard 2022-12-08 ValidFAA registration status code V: Valid registration. All codes
N84062 Cessna
172K
Fixed-wing, single engine 44 Flyers
Harlowton, Montana
Standard 2022-12-08 ValidFAA registration status code V: Valid registration. All codes
N95477 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2022-12-08 ValidFAA registration status code V: Valid registration. All codes
N1312U Cessna
172M
Fixed-wing, single engine Simplifly LLC
Mesa, Arizona
Standard 2022-12-07 ValidFAA registration status code V: Valid registration. All codes
N1950W Beech
B19
Fixed-wing, single engine Light Sport and Beyond LLC
Carville, Louisiana
Standard 2022-12-07 ValidFAA registration status code V: Valid registration. All codes
N43136 Piper
PA-28-151
Fixed-wing, single engine Dakota Aviation LLC
Sioux Falls, South Dakota
Standard 2022-12-07 ValidFAA registration status code V: Valid registration. All codes
N4790A Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-12-07 ValidFAA registration status code V: Valid registration. All codes
N484P Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2022-12-07 ValidFAA registration status code V: Valid registration. All codes
N53494 Cessna
172P
Fixed-wing, single engine Individual owner
Washington
Standard 2022-12-07 ValidFAA registration status code V: Valid registration. All codes
N98774 Cessna
172P
Fixed-wing, single engine Simplifly LLC
Mesa, Arizona
Standard 2022-12-07 ValidFAA registration status code V: Valid registration. All codes
N35488 Cessna
172I
Fixed-wing, single engine Individual owner
Wyoming
Standard 2022-12-06 ValidFAA registration status code V: Valid registration. All codes
N356JB American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
New Jersey
Standard 2022-12-06 ValidFAA registration status code V: Valid registration. All codes
N36242 Bellanca
7GCBC
Fixed-wing, single engine Landmark Search Group
Spokane, Washington
Standard 2022-12-06 ValidFAA registration status code V: Valid registration. All codes
N44775 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Illinois
Standard 2022-12-06 ValidFAA registration status code V: Valid registration. All codes
N50906 Cessna
172P
Fixed-wing, single engine Aitken & Wilson Aviation LLC
Leesburg, Virginia
Standard 2022-12-06 ValidFAA registration status code V: Valid registration. All codes
N62918 Cessna
172P
Fixed-wing, single engine Neron II LLC
New Smyrna Beach, Florida
Standard 2022-12-06 ValidFAA registration status code V: Valid registration. All codes
N75560 Cessna
172N
Fixed-wing, single engine Nexga Aircraft INC
Greensboro, North Carolina
Standard 2022-12-06 ValidFAA registration status code V: Valid registration. All codes
N7804N Piper
PA-28-180
Fixed-wing, single engine Apaa Aviation Group LLC
Frisco, Texas
Standard 2022-12-06 ValidFAA registration status code V: Valid registration. All codes
N900B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Texas
Standard 2022-12-06 ValidFAA registration status code V: Valid registration. All codes
N311LT Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Alabama
Standard 2022-12-05 ValidFAA registration status code V: Valid registration. All codes
N61868 Cessna
172M
Fixed-wing, single engine Jamm Aircraft LLC
Sterling, Ohio
Standard 2022-12-05 ValidFAA registration status code V: Valid registration. All codes
N7083G Cessna
172K
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2022-12-05 ValidFAA registration status code V: Valid registration. All codes
N150HC Cessna
A150M
Fixed-wing, single engine Individual owner
Nevada
Standard 2022-12-03 ValidFAA registration status code V: Valid registration. All codes
N3821P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2022-12-03 ValidFAA registration status code V: Valid registration. All codes
N396SK Cessna
172P
Fixed-wing, single engine Ial CORP
Lewes, Delaware
Standard 2022-12-03 ValidFAA registration status code V: Valid registration. All codes
N424RD Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-12-03 ValidFAA registration status code V: Valid registration. All codes
N46396 Cessna
172K
Fixed-wing, single engine Kpa LLC
Kalamazoo, Michigan
Standard 2022-12-03 ValidFAA registration status code V: Valid registration. All codes
N500KC Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2022-12-03 ValidFAA registration status code V: Valid registration. All codes
N7241D Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2022-12-03 ValidFAA registration status code V: Valid registration. All codes
N7591R Piper
PA-28-140
Fixed-wing, single engine Right Rudder Brothers LLC
East Point, Georgia
Standard 2022-12-03 ValidFAA registration status code V: Valid registration. All codes
N7640G Cessna
172L
Fixed-wing, single engine Creative Strategies INC
Proctorville, Ohio
Standard 2022-12-03 ValidFAA registration status code V: Valid registration. All codes
N999AF Cessna
172M
Fixed-wing, single engine Three Four Juliet LLC
Orange, California
Standard 2022-12-03 ValidFAA registration status code V: Valid registration. All codes
N1868V Cessna
172M
Fixed-wing, single engine Creative Strategies INC
Proctorville, Ohio
Standard 2022-12-02 ValidFAA registration status code V: Valid registration. All codes
N5296K Cessna
172P
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2022-12-02 ValidFAA registration status code V: Valid registration. All codes
N1244A Piper
PA-18
Fixed-wing, single engine Individual owner
Ohio
Standard 2022-12-01 ValidFAA registration status code V: Valid registration. All codes
N5155K Cessna
172N
Fixed-wing, single engine Suno LLC
Calhan, Colorado
Standard 2022-12-01 ValidFAA registration status code V: Valid registration. All codes
N75K Hoium Ross
GLASAIR RG
Fixed-wing, single engine Individual owner
Minnesota
Experimental 2022-12-01 ValidFAA registration status code V: Valid registration. All codes
N9638C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Arkansas
Standard 2022-12-01 ValidFAA registration status code V: Valid registration. All codes
N98242 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2022-12-01 ValidFAA registration status code V: Valid registration. All codes
N1303U Cessna
172M
Fixed-wing, single engine Goodrich Pilot Center LLC
Johnson City, New York
Standard 2022-11-30 ValidFAA registration status code V: Valid registration. All codes
N2328Y Cessna
177
Fixed-wing, single engine Rogue Air LLC
Miller, South Dakota
Standard 2022-11-30 ValidFAA registration status code V: Valid registration. All codes
N3701P Piper
PA-22-160
Fixed-wing, single engine Individual owner
New York
Standard 2022-11-30 ValidFAA registration status code V: Valid registration. All codes
N3877P Piper
PA-18A 150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2022-11-30 ValidFAA registration status code V: Valid registration. All codes
N4649R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-11-30 ValidFAA registration status code V: Valid registration. All codes
N733ZS Cessna
172N
Fixed-wing, single engine Individual owner
Colorado
Standard 2022-11-30 ValidFAA registration status code V: Valid registration. All codes
N78180 Cessna
172K
Fixed-wing, single engine Co-owned owner
North Carolina
Standard 2022-11-30 ValidFAA registration status code V: Valid registration. All codes
N8894 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Multiple 2022-11-30 ValidFAA registration status code V: Valid registration. All codes
N9837D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Nebraska
Standard 2022-11-30 ValidFAA registration status code V: Valid registration. All codes
N1041S Cessna
172N
Fixed-wing, single engine Co-owned owner
Florida
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N132GA Slingsby
T67C
Fixed-wing, single engine Individual owner
Texas
Experimental 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N1644J Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Colorado
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N17324 Piper
PA-28-161
Fixed-wing, single engine Macair Aviation LLC
Xenia, Ohio
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N216RG Cessna
172P
Fixed-wing, single engine Channel Islands Aviation INC
Camarillo, California
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N2950T Aero Commander
100
Fixed-wing, single engine Randall Aviation LLC
Arvada, Colorado
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N3872X Aero Commander
100
Fixed-wing, single engine Behrens Bros Aviation LLC
Gerald, Missouri
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N4118Z Piper
PA-18-150
Fixed-wing, single engine Supercub1 LLC
Anchorage, Alaska
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N43RV Daniels Rexford V
VANS ACFT RV-8
Fixed-wing, single engine Individual owner
Arizona
Experimental 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N5124J Cessna
172N
Fixed-wing, single engine Above and Beyond Aviation LLC
Austin, Texas
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N5777U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N65872 Cessna
172P
Fixed-wing, single engine Channel Islands Aviation INC
Camarillo, California
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N723G Cessna
172N
Fixed-wing, single engine Individual owner
Florida
Standard 2022-11-29 ValidFAA registration status code V: Valid registration. All codes
N42061 Cessna
172M
Fixed-wing, single engine Individual owner
Nebraska
Standard 2022-11-28 ValidFAA registration status code V: Valid registration. All codes
N545WW Piper
PA-22-150
Fixed-wing, single engine Individual owner
Arizona
Standard 2022-11-28 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.