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
N2820Q Cessna
172L
Fixed-wing, single engine Bush Steven B
Lago Vista, Texas
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N409MM Ruble
BUSHBY MUSTANG M-II
Fixed-wing, single engine Individual owner
Washington
Experimental 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N43530 Sprague Joseph W
VANS RV-4
Fixed-wing, single engine Individual owner
New Jersey
Experimental 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N44714 Piper
PA-28-151
Fixed-wing, single engine Individual owner
Alabama
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N621BF Piper
PA-28-140
Fixed-wing, single engine Boldflight LLC
Danville, Indiana
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N6622D Cessna
172N
Fixed-wing, single engine Arq Aviation LLC
Wilmington, North Carolina
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N7337G Cessna
172K
Fixed-wing, single engine Individual owner
Washington
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N7694F Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N842BJ Piper
PA-28-161
Fixed-wing, single engine Master Trade LLC
Detroit, Michigan
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N9652V Cessna
172M
Fixed-wing, single engine Brown Keno
Athens, Texas
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N9717C Piper
PA-28-161
Fixed-wing, single engine Individual owner
Texas
Standard 2023-03-28 ValidFAA registration status code V: Valid registration. All codes
N189RA American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N2546P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N3152Z Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N3718P Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Missouri
Standard 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N4452J Piper
PA-28-140
Fixed-wing, single engine Fly Around Alaska LLC
Palmer, Alaska
Standard 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N6126W Piper
PA-28-140
Fixed-wing, single engine Individual owner
South Carolina
Standard 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N6495W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N694P Gutierrez
RV-4
Fixed-wing, single engine Individual owner
Alabama
Experimental 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N739XC Cessna
172N
Fixed-wing, single engine Individual owner
Louisiana
Standard 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N9682H Cessna
172M
Fixed-wing, single engine Cloutblazer LLC
Sacramento, California
Standard 2023-03-27 ValidFAA registration status code V: Valid registration. All codes
N40858 Piper
PA-28-151
Fixed-wing, single engine Dicey Aviation LLC
Somerset, Kentucky
Standard 2023-03-26 ValidFAA registration status code V: Valid registration. All codes
N8161D Piper
PA-28-161
Fixed-wing, single engine Dicey Aviation LLC
Somerset, Kentucky
Standard 2023-03-26 ValidFAA registration status code V: Valid registration. All codes
N3077E Cessna
172N
Fixed-wing, single engine Blackhawk Holding CORP
Wilmington, Delaware
Standard 2023-03-25 ValidFAA registration status code V: Valid registration. All codes
N64103 Cessna
172P
Fixed-wing, single engine Individual owner
Florida
Standard 2023-03-25 ValidFAA registration status code V: Valid registration. All codes
N737DJ Cessna
172N
Fixed-wing, single engine Youngs Farm Blue Mountain Ranch LLC
Paulina, Oregon
Standard 2023-03-25 ValidFAA registration status code V: Valid registration. All codes
N8368R Piper
PA-28-140
Fixed-wing, single engine Live and Give Foundation Management Group LLC
Huntsville, Texas
Standard 2023-03-25 ValidFAA registration status code V: Valid registration. All codes
N3320Z Piper
PA-22-160
Fixed-wing, single engine Individual owner
Missouri
Standard 2023-03-24 ValidFAA registration status code V: Valid registration. All codes
N37NE Robinson Helicopter
R22 BETA
Helicopter Rotor Technologies INC
Nashua, New Hampshire
Experimental 2023-03-24 ValidFAA registration status code V: Valid registration. All codes
N737VB Cessna
172N
Fixed-wing, single engine Individual owner
New Mexico
Standard 2023-03-24 ValidFAA registration status code V: Valid registration. All codes
N84515 Cessna
172K
Fixed-wing, single engine Individual owner
Maine
Standard 2023-03-24 ValidFAA registration status code V: Valid registration. All codes
N8707D Piper
PA-22-160
Fixed-wing, single engine Orton Aviation LLC
Walker, Minnesota
Standard 2023-03-24 ValidFAA registration status code V: Valid registration. All codes
N91793 Cessna
172M
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-03-24 ValidFAA registration status code V: Valid registration. All codes
N1027M Cessna
172L
Fixed-wing, single engine Loomis Aviation LLC
Gahanna, Ohio
Standard 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N104RV Hansen Richard C
RV-4
Fixed-wing, single engine Individual owner
North Dakota
Experimental 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N2448E Cessna
172N
Fixed-wing, single engine Pwc Engine Air INC
Manorville, New York
Standard 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N2914M Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N3257E Cessna
172N
Fixed-wing, single engine Flycarolina LLC
Concord, North Carolina
Standard 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N33676 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N4782G Luther Sunderland
THORP T-18
Fixed-wing, single engine Individual owner
California
Experimental 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N6897B Piper
PA-18-150
Fixed-wing, single engine Cape May Aerial Advertising LLC
Cape May Ch, New Jersey
Restricted 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N7271D Piper
PA-18A 150
Fixed-wing, single engine Cape May Aerial Advertising LLC
Cape May Ch, New Jersey
Restricted 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N8173N Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arizona
Standard 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N91854 Bellanca
7GCBC
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N9566D Piper
PA-22-160
Fixed-wing, single engine Co-owned owner
California
Standard 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N9802U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
South Carolina
Standard 2023-03-23 ValidFAA registration status code V: Valid registration. All codes
N1204T Piper
PA-28-140
Fixed-wing, single engine High Sky LLC
Ellensburg, Washington
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N1857J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N20041 Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N21791 Cessna
172M
Fixed-wing, single engine Individual owner
Kansas
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N2904M Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N3118T Cessna
177
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N315H Nesmith
COUGAR
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N315MT Cessna
172M
Fixed-wing, single engine Fly Mt LLP
Charlo, Montana
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N317DS Altenhofen Gregory Thomas
RV-4
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N583FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N6174D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N62531 Cessna
172P
Fixed-wing, single engine Lg Holdings LLC
Gretna, Nebraska
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N6501 Phillips
COUGAR
Fixed-wing, single engine Individual owner
Washington
Experimental 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N7138B Piper
PA-22-150
Fixed-wing, single engine Jlg3 LLC
Wentworth, South Dakota
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N75134 Piper
PA-28-151
Fixed-wing, single engine N75134 LLC
Honolulu, Hawaii
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N76015 Cessna
172N
Fixed-wing, single engine Aldea Aviation Partners LLC
Encino, California
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N7611G Cessna
172L
Fixed-wing, single engine Individual owner
California
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N83480 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2023-03-22 ValidFAA registration status code V: Valid registration. All codes
N1751J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Arkansas
Standard 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N4361M Piper
PA-12
Fixed-wing, single engine Cape May Aerial Advertising LLC
Cape May Ch, New Jersey
Restricted 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N4830G Cessna
172N
Fixed-wing, single engine Hawaii Pacific Aviation INC
Kailua Kona, Hawaii
Standard 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N7338F Cessna
172N
Fixed-wing, single engine Kyle Aviation Services LLC
North Charleston, South Carolina
Standard 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N7846D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kentucky
Standard 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N79905 Cessna
172K
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N907WM Piper
PA-18-150
Fixed-wing, single engine Individual owner
Louisiana
Restricted 2023-03-21 ValidFAA registration status code V: Valid registration. All codes
N172HT Cessna
172I
Fixed-wing, single engine Auto Outlet of Irvington LLC
Irvington, New Jersey
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N20133 Cessna
172M
Fixed-wing, single engine Creative Strategies INC
Proctorville, Ohio
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N26003 Robinson Helicopter
R22 BETA
Helicopter Bay Lux Ventures LLC
Tampa, Florida
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N2723E Cessna
172N
Fixed-wing, single engine Marshals Technology LLC
Martinez, Georgia
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N2815Z Bellanca
7GCAA
Fixed-wing, single engine Co-owned owner
Alabama
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N289WD Dunn William M
LONG EZ
Fixed-wing, single engine Individual owner
California
Experimental 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N4659G Cessna
172N
Fixed-wing, single engine 4659G LLC
Wheeling, Illinois
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N5075W Piper
PA-28
Fixed-wing, single engine Individual owner
Ohio
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N56JU Joe A Underwood Llc
RV6.5
Fixed-wing, single engine Individual owner
Maryland
Experimental 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N5847U Piper
PA-28-140
Fixed-wing, single engine Fly Vermont LLC
Swanton, Vermont
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N599DL Karl David J
RV-6
Fixed-wing, single engine Individual owner
Texas
Experimental 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N64217 Cessna
172M
Fixed-wing, single engine Simplifly LLC
Mesa, Arizona
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N73433 Cessna
172M
Fixed-wing, single engine Salvation Neighborhood Development CORP
Riverside, California
Standard 2023-03-20 ValidFAA registration status code V: Valid registration. All codes
N3113A Maule
MX-7-160
Fixed-wing, single engine N Maple LLC
Kalispell, Montana
Standard 2023-03-19 ValidFAA registration status code V: Valid registration. All codes
N41606 Piper
PA-28-151
Fixed-wing, single engine My Flight LLC
Cypress, Texas
Standard 2023-03-19 ValidFAA registration status code V: Valid registration. All codes
N53865 Bellanca
7GCBC
Fixed-wing, single engine Larder Aviation LLC
Charlotte, Michigan
Standard 2023-03-19 ValidFAA registration status code V: Valid registration. All codes
N74968 Piper
PA-18-150
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2023-03-19 ValidFAA registration status code V: Valid registration. All codes
N88MD Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2023-03-19 ValidFAA registration status code V: Valid registration. All codes
N1017E Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Virginia
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N123GJ Cessna
172N
Fixed-wing, single engine Aftcloud INC
Ontario, California
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N1784J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alabama
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N1791P Piper
PA-22
Fixed-wing, single engine Individual owner
Idaho
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N2583P Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Multiple 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N2952P Piper
PA-22-150
Fixed-wing, single engine Individual owner
California
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N327MS Staudacher Jon
DC 11
Fixed-wing, single engine Individual owner
Florida
Experimental 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N35669 Cessna
172I
Fixed-wing, single engine Selkirk Seaplanes LLC
Hayden, Idaho
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N3891Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N43636 Piper
PA-28-151
Fixed-wing, single engine Individual owner
California
Restricted 2023-03-18 ValidFAA registration status code V: Valid registration. All codes
N5060C Wagner Colman L
BANDIT 4
Fixed-wing, single engine Individual owner
North Dakota
Experimental 2023-03-18 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.