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
N26456 Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
California
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N4363J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N4982E Cessna
172N
Fixed-wing, single engine Devrnja Aero LLC
Knoxville, Tennessee
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N57352 Piper
PA-28-140
Fixed-wing, single engine Dewalt Colt Aerospace LLC
Logan, Ohio
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N61937 Cessna
172M
Fixed-wing, single engine Simplifly LLC
Mesa, Arizona
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N65DP Cessna
172K
Fixed-wing, single engine Individual owner
Florida
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N733WL Cessna
172N
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N734FA Cessna
172N
Fixed-wing, single engine Lima-001 LLC
Muscatine, Iowa
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N78112 Cessna
172K
Fixed-wing, single engine Individual owner
Louisiana
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N79001 Cessna
172K
Fixed-wing, single engine Pau Hana Enterprises LLC Series IV
Boulder City, Nevada
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N88055 Bellanca
7GCBC
Fixed-wing, single engine Lake Air Academy LLC
Richland, Michigan
Standard 2024-01-20 ValidFAA registration status code V: Valid registration. All codes
N1835P Piper
PA-22
Fixed-wing, single engine Vintage Restorers LTD LLC
Windsor, Colorado
Standard 2024-01-19 ValidFAA registration status code V: Valid registration. All codes
N29469 Cessna
177
Fixed-wing, single engine Gem Property Investments LLC
San Antonio, Texas
Standard 2024-01-19 ValidFAA registration status code V: Valid registration. All codes
N4983F Cessna
172N
Fixed-wing, single engine Skyventure Avaition LLC
Battle Creek, Michigan
Standard 2024-01-19 ValidFAA registration status code V: Valid registration. All codes
N79241 Cessna
172K
Fixed-wing, single engine Stanley Aero Club Gastonia INC
Belmont, North Carolina
Standard 2024-01-19 ValidFAA registration status code V: Valid registration. All codes
N8TR Cessna
172L
Fixed-wing, single engine Aviation Academy LLC
Wichita, Kansas
Standard 2024-01-19 ValidFAA registration status code V: Valid registration. All codes
N1514T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2024-01-18 ValidFAA registration status code V: Valid registration. All codes
N214ER Cessna
172M
Fixed-wing, single engine Lima-001 LLC
Muscatine, Iowa
Standard 2024-01-18 ValidFAA registration status code V: Valid registration. All codes
N5044M Piper
PA-28-140
Fixed-wing, single engine Mojocreatives INC
Avondale Estates, Georgia
Standard 2024-01-18 ValidFAA registration status code V: Valid registration. All codes
N7146R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-01-18 ValidFAA registration status code V: Valid registration. All codes
N738CG Cessna
172N
Fixed-wing, single engine Eastwest Holdings LLC
Dover, Massachusetts
Standard 2024-01-18 ValidFAA registration status code V: Valid registration. All codes
N738MK Cessna
172N
Fixed-wing, single engine Obrien Aviation INC
Port Orange, Florida
Standard 2024-01-18 ValidFAA registration status code V: Valid registration. All codes
N78312 Cessna
172K
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-01-18 ValidFAA registration status code V: Valid registration. All codes
N80149 Cessna
172M
Fixed-wing, single engine Cielos Serenos LLC
Tucson, Arizona
Standard 2024-01-18 ValidFAA registration status code V: Valid registration. All codes
N9989V Cessna
172M
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2024-01-18 ValidFAA registration status code V: Valid registration. All codes
N1255U Cessna
172M
Fixed-wing, single engine Individual owner
Idaho
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N2559S Piper
PA-18-150
Fixed-wing, single engine True Altitude LLC
Isola, Mississippi
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N32942 Piper
PA-18-150
Fixed-wing, single engine Individual owner
New York
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N33001 Piper
PA-28-140
Fixed-wing, single engine Peak Builders INC
San Diego, California
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N523JC Mcbride Richard L
RV-6
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N609DC Cessna
172M
Fixed-wing, single engine Barber Aircraft LLC
Topping, Virginia
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N64020 Cessna
172M
Fixed-wing, single engine Bend Aircraft Mechanics LLC
Bend, Oregon
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N6671W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N6873B Piper
PA-18A 150
Fixed-wing, single engine Individual owner
New York
Restricted 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N737ET Cessna
172N
Fixed-wing, single engine Optima Aviation LLC DBA
Lewisville, Texas
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N738UY Cessna
172N
Fixed-wing, single engine Optima Aviation LLC DBA
Lewisville, Texas
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N81BA Piper
PA-28-151
Fixed-wing, single engine Ascent Aviation INC
Van Nuys, California
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N9220D Piper
PA-22-160
Fixed-wing, single engine Ellis Harvey Airport INC
Guthrie, Oklahoma
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N9782W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-01-17 ValidFAA registration status code V: Valid registration. All codes
N35383 Cessna
172I
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2024-01-16 ValidFAA registration status code V: Valid registration. All codes
N55SH Hartzell Richard E
WAG AERO TRAINER
Fixed-wing, single engine Individual owner
Washington
Experimental 2024-01-16 ValidFAA registration status code V: Valid registration. All codes
N5B Morton Roscoe D
GLASTAR
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2024-01-16 ValidFAA registration status code V: Valid registration. All codes
N64543 Cessna
172M
Fixed-wing, single engine Rcr Aviation LLC
Mansfield, Ohio
Standard 2024-01-16 ValidFAA registration status code V: Valid registration. All codes
N9957Q Piper
PA-18-135
Fixed-wing, single engine Individual owner
South Dakota
Standard 2024-01-16 ValidFAA registration status code V: Valid registration. All codes
N1814D Piper
PA-18-150
Fixed-wing, single engine Andover Flight School INC
Andover, New Jersey
Standard 2024-01-15 ValidFAA registration status code V: Valid registration. All codes
N5374K Cessna
172P
Fixed-wing, single engine Apex Aircraft Leasing LLC
Anchorage, Alaska
Standard 2024-01-15 ValidFAA registration status code V: Valid registration. All codes
N54420 Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2024-01-15 ValidFAA registration status code V: Valid registration. All codes
N771RA Piper
PA-28-161
Fixed-wing, single engine National Aviation Academy of Mississippi INC
Clearwater, Florida
Standard 2024-01-15 ValidFAA registration status code V: Valid registration. All codes
N8243E Cessna
172N
Fixed-wing, single engine Macon Air LLC
Franklin, North Carolina
Standard 2024-01-15 ValidFAA registration status code V: Valid registration. All codes
N1474U Cessna
172M
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-01-14 ValidFAA registration status code V: Valid registration. All codes
N216DS Avions Pierre Robin
PIERRE ROBIN R2160
Fixed-wing, single engine Individual owner
California
Standard 2024-01-14 ValidFAA registration status code V: Valid registration. All codes
N12207 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Michigan
Standard 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N21GW American
AA-5
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N313HT Tepolt Henry
HC 150
Fixed-wing, single engine Individual owner
New York
Experimental 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N5485K Cessna
172P
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N6660H Cessna
172M
Fixed-wing, single engine Barr Air Patrol LLC
Mesquite, Texas
Standard 2024-01-13 ValidFAA registration status code V: Valid registration. All codes
N3087T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-01-12 ValidFAA registration status code V: Valid registration. All codes
N4984T Piper
PA-28-140
Fixed-wing, single engine Boggs Investments Air Div LLC
Fredericksburg, Virginia
Standard 2024-01-12 ValidFAA registration status code V: Valid registration. All codes
N2378T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-01-11 ValidFAA registration status code V: Valid registration. All codes
N787EB Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
South Carolina
Standard 2024-01-11 ValidFAA registration status code V: Valid registration. All codes
N18FG Cessna
172M
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-01-10 ValidFAA registration status code V: Valid registration. All codes
N2384J Beech
23
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-01-10 ValidFAA registration status code V: Valid registration. All codes
N315EF Piper
PA-28-161
Fixed-wing, single engine Matherne Aviation
Houma, Louisiana
Standard 2024-01-10 ValidFAA registration status code V: Valid registration. All codes
N65192 Cessna
172P
Fixed-wing, single engine Tactical Integrated Training Solutions LLC
Colorado Springs, Colorado
Standard 2024-01-10 ValidFAA registration status code V: Valid registration. All codes
N73407 Cessna
172M
Fixed-wing, single engine Wxly Aviat LLC
Gastonia, North Carolina
Standard 2024-01-10 ValidFAA registration status code V: Valid registration. All codes
N7347G Cessna
172K
Fixed-wing, single engine N7347G LLC
Miami, Florida
Standard 2024-01-10 ValidFAA registration status code V: Valid registration. All codes
N78367 Cessna
172K
Fixed-wing, single engine Co-owned owner
Montana
Standard 2024-01-10 ValidFAA registration status code V: Valid registration. All codes
N9670W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-01-10 ValidFAA registration status code V: Valid registration. All codes
N105PD Cessna
172M
Fixed-wing, single engine N105Pd LLC
Ulysses, Kansas
Standard 2024-01-09 ValidFAA registration status code V: Valid registration. All codes
N1900U Cessna
172N
Fixed-wing, single engine Bismarck Aero Center
Bismarck, North Dakota
Standard 2024-01-09 ValidFAA registration status code V: Valid registration. All codes
N2264T Piper
PA-28-140
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-01-09 ValidFAA registration status code V: Valid registration. All codes
N2340S Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-01-09 ValidFAA registration status code V: Valid registration. All codes
N3572P Piper
PA-18
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-01-09 ValidFAA registration status code V: Valid registration. All codes
N43JS Robinson Helicopter
R22 BETA
Helicopter Tamiry Aviation LLC
Wilmington, Delaware
Standard 2024-01-09 ValidFAA registration status code V: Valid registration. All codes
N4776J Beech
A23-19
Fixed-wing, single engine Individual owner
Utah
Standard 2024-01-09 ValidFAA registration status code V: Valid registration. All codes
N64335 Cessna
172M
Fixed-wing, single engine Individual owner
Texas
Standard 2024-01-09 ValidFAA registration status code V: Valid registration. All codes
N6452R Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2024-01-09 ValidFAA registration status code V: Valid registration. All codes
N1750J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Maryland
Standard 2024-01-08 ValidFAA registration status code V: Valid registration. All codes
N26784 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Texas Cheetah LLC
Sugar Land, Texas
Standard 2024-01-08 ValidFAA registration status code V: Valid registration. All codes
N4333K Champion
7GCBC
Fixed-wing, single engine Individual owner
Arizona
Standard 2024-01-08 ValidFAA registration status code V: Valid registration. All codes
N6289F Cessna
172N
Fixed-wing, single engine Sbk Aviation LLC
Festus, Missouri
Standard 2024-01-08 ValidFAA registration status code V: Valid registration. All codes
N6916Q Beech
A23-19
Fixed-wing, single engine Individual owner
Texas
Standard 2024-01-08 ValidFAA registration status code V: Valid registration. All codes
N2313P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Utah
Standard 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N35680 Cessna
172I
Fixed-wing, single engine Pilot Studio LLC
Sabana Seca, Puerto Rico
Multiple 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N4188J Nys John M
VANS RV-6A
Fixed-wing, single engine Individual owner
Kansas
Experimental 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N685FL Piper
PA-28-140
Fixed-wing, single engine Dadson Tach LLC
Mesa, Arizona
Standard 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N8398R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N84224 Cessna
172K
Fixed-wing, single engine Individual owner
Oregon
Standard 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N90996 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Texas
Standard 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N9503D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Colorado
Standard 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N9695H Cessna
172M
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N9811W Piper
PA-28-140
Fixed-wing, single engine Above the Best Consulting LLC
Clarksville, Tennessee
Standard 2024-01-07 ValidFAA registration status code V: Valid registration. All codes
N172PZ Cessna
172N
Fixed-wing, single engine First Class Aviation LLC
Galena, Ohio
Standard 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N2245K Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N4285H Piper
PA-14
Fixed-wing, single engine Individual owner
Alaska
Multiple 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N6561W Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N7331F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Utah
Standard 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N8287N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N87015 Bellanca
7GCBC
Fixed-wing, single engine Legacy Lsa LLC
Lubbock, Texas
Standard 2024-01-06 ValidFAA registration status code V: Valid registration. All codes
N2540F American Champion Aircraft
7GCAA
Fixed-wing, single engine Mcguires Flying Service LLC
Obion, Tennessee
Standard 2024-01-05 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.