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
N47AT Potts Allen D
WAG-A-BOND
Fixed-wing, single engine Individual owner
Montana
Experimental 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N5453W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
California
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N5724J Cessna
172N
Fixed-wing, single engine Purdue Aviation LLC
West Lafayette, Indiana
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N7890G Cessna
172L
Fixed-wing, single engine Altus Aircraft LLC
Taylor, Texas
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N7901G Cessna
172L
Fixed-wing, single engine Individual owner
New Jersey
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N8043U Robinson Helicopter
R22 BETA
Helicopter Classic Banjo LLC
Richmond, Kentucky
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N8116B Piper
PA-28-161
Fixed-wing, single engine Aronbay LLC
Bartlett, Illinois
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N8476L Cessna
172I
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N913CS Bruce M Seaman
VANS RV-7A
Fixed-wing, single engine Individual owner
Arizona
Experimental 2021-07-27 ValidFAA registration status code V: Valid registration. All codes
N141AC Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Mississippi
Standard 2021-07-26 ValidFAA registration status code V: Valid registration. All codes
N5048N Bellanca
7GCBC
Fixed-wing, single engine Stockmans Veterinary Services
Fort Sumner, New Mexico
Standard 2021-07-26 ValidFAA registration status code V: Valid registration. All codes
N61643 Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2021-07-26 ValidFAA registration status code V: Valid registration. All codes
N65743 Cessna
172P
Fixed-wing, single engine University of Central Missouri
Warrensburg, Missouri
Standard 2021-07-26 ValidFAA registration status code V: Valid registration. All codes
N7057R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2021-07-26 ValidFAA registration status code V: Valid registration. All codes
N734QH Cessna
172N
Fixed-wing, single engine 3 Generations LLC
Bar Harbor, Maine
Standard 2021-07-26 ValidFAA registration status code V: Valid registration. All codes
N996PJ Hamilton Patricia Gilles
RV-6
Fixed-wing, single engine Individual owner
South Carolina
Experimental 2021-07-26 ValidFAA registration status code V: Valid registration. All codes
N20675 Cessna
172M
Fixed-wing, single engine First Flight CORP
San Diego, California
Standard 2021-07-24 ValidFAA registration status code V: Valid registration. All codes
N5786W Piper
PA-28-160
Fixed-wing, single engine Individual owner
Idaho
Standard 2021-07-24 ValidFAA registration status code V: Valid registration. All codes
N63MS Schipper Michael J
RV-9A
Fixed-wing, single engine Individual owner
Wisconsin
Experimental 2021-07-24 ValidFAA registration status code V: Valid registration. All codes
N6491W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2021-07-24 ValidFAA registration status code V: Valid registration. All codes
N1828J Piper
PA-28-140
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-07-23 ValidFAA registration status code V: Valid registration. All codes
N19669 Cessna
172L
Fixed-wing, single engine Co-owned owner
California
Standard 2021-07-23 ValidFAA registration status code V: Valid registration. All codes
N46109 Cessna
172I
Fixed-wing, single engine Pray Aviation INC
Augusta, Kansas
Standard 2021-07-23 ValidFAA registration status code V: Valid registration. All codes
N19907 Cessna
172M
Fixed-wing, single engine Fly Pioneer Valley LLC
Gill, Massachusetts
Standard 2021-07-22 ValidFAA registration status code V: Valid registration. All codes
N306AC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
New Hampshire
Standard 2021-07-22 ValidFAA registration status code V: Valid registration. All codes
N538C Cessna
172P
Fixed-wing, single engine Jav Air Services LLC
Anchorage, Alaska
Standard 2021-07-22 ValidFAA registration status code V: Valid registration. All codes
N75904 Cessna
172N
Fixed-wing, single engine Individual owner
Arkansas
Standard 2021-07-22 ValidFAA registration status code V: Valid registration. All codes
N4476Z Piper
PA-18-150
Fixed-wing, single engine S and C Flying LLC
Pierre, South Dakota
Standard 2021-07-21 ValidFAA registration status code V: Valid registration. All codes
N54RV Page Joseph E
VANS RV-4
Fixed-wing, single engine Individual owner
West Virginia
Experimental 2021-07-21 ValidFAA registration status code V: Valid registration. All codes
N5501W Piper
PA-28-160
Fixed-wing, single engine Tailwinds Aviation LLC
Kokomo, Indiana
Standard 2021-07-21 ValidFAA registration status code V: Valid registration. All codes
N177SC Piper
PA18-160
Fixed-wing, single engine Carson Cubs LLC
Yelm, Washington
Standard 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N24646 Beech
B19
Fixed-wing, single engine Individual owner
Washington
Standard 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N26717 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Dumpling Girls LLC
Concord, North Carolina
Standard 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N26DA Davids Paul R
PAUL DAVIDS RENAISSA
Fixed-wing, single engine Individual owner
South Dakota
Experimental 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N55401 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Mississippi
Standard 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N5679U Piper
PA-28-140
Fixed-wing, single engine Inverted Holdings LLC
Newnan, Georgia
Standard 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N738BU Cessna
172N
Fixed-wing, single engine Aircraft Leasing INC
Everett, Washington
Standard 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N79217 Cessna
172K
Fixed-wing, single engine Individual owner
Texas
Standard 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N80338 Cessna
172M
Fixed-wing, single engine Individual owner
Puerto Rico
Standard 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N82293 Piper
PA-18-150
Fixed-wing, single engine Individual owner
Washington
Standard 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N8352L Cessna
172I
Fixed-wing, single engine Individual owner
Maine
Standard 2021-07-20 ValidFAA registration status code V: Valid registration. All codes
N12943 Cessna
172M
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N146S Sloe/Curtis
GLASAIR
Fixed-wing, single engine Individual owner
Nevada
Experimental 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N149DE Esh Darwin R
ESH/VANS RV-9A
Fixed-wing, single engine Toma Integrity INC
Austin, Texas
Experimental 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N158ND Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N159ND Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N1871V Cessna
172M
Fixed-wing, single engine Individual owner
Michigan
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N241ND Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N4482E Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N550PU Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N555PU Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N6521L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Withheld at owner's request
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N7154G Cessna
172K
Fixed-wing, single engine Individual owner
Washington
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N7662G Cessna
172L
Fixed-wing, single engine B&R Aircraft LLC
Wadsworth, Ohio
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N8774D Piper
PA-22-160
Fixed-wing, single engine Individual owner
Michigan
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N9659Q Cessna
172M
Fixed-wing, single engine Individual owner
Minnesota
Standard 2021-07-19 ValidFAA registration status code V: Valid registration. All codes
N32SA Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
California
Standard 2021-07-16 ValidFAA registration status code V: Valid registration. All codes
N9150H Cessna
172M
Fixed-wing, single engine N9150H LLC
Charleston, South Carolina
Standard 2021-07-16 ValidFAA registration status code V: Valid registration. All codes
N98320 Piper
PA-28-140
Fixed-wing, single engine Flyg5 LLC
New London, Wisconsin
Standard 2021-07-16 ValidFAA registration status code V: Valid registration. All codes
N46581 Cessna
172K
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-07-15 ValidFAA registration status code V: Valid registration. All codes
N81MH Piper
PA-28-140
Fixed-wing, single engine Individual owner
Connecticut
Standard 2021-07-15 ValidFAA registration status code V: Valid registration. All codes
N5129W Piper
PA-28-160
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2021-07-14 ValidFAA registration status code V: Valid registration. All codes
N16447 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2021-07-13 ValidFAA registration status code V: Valid registration. All codes
N424WG Green Walter & June
BD-4
Fixed-wing, single engine Individual owner
Nebraska
Experimental 2021-07-13 ValidFAA registration status code V: Valid registration. All codes
N5476W Piper
PA-28-150
Fixed-wing, single engine Talon Aviation LLC
Greenville, Michigan
Standard 2021-07-13 ValidFAA registration status code V: Valid registration. All codes
N715MB Brown Mark C
MUSTANG II
Fixed-wing, single engine S&M Aircraft LLC
Harmony, Pennsylvania
Experimental 2021-07-13 ValidFAA registration status code V: Valid registration. All codes
N8241Z Piper
PA-28-161
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2021-07-13 ValidFAA registration status code V: Valid registration. All codes
N9633U Grumman American Avn. Corp.
AA-1C
Fixed-wing, single engine Co-owned owner
Texas
Standard 2021-07-13 ValidFAA registration status code V: Valid registration. All codes
N5342D Cessna
172N
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2021-07-12 ValidFAA registration status code V: Valid registration. All codes
N734SM Cessna
172N
Fixed-wing, single engine Five Mcds LLC
Jupiter, Florida
Standard 2021-07-12 ValidFAA registration status code V: Valid registration. All codes
N905AZ Cessna
172P
Fixed-wing, single engine N905Az LLC
Miami, Florida
Standard 2021-07-12 ValidFAA registration status code V: Valid registration. All codes
N1358U Cessna
172M
Fixed-wing, single engine Waddill Paula J
Puryear, Tennessee
Standard 2021-07-10 ValidFAA registration status code V: Valid registration. All codes
N464DB Cessna
172M
Fixed-wing, single engine Co-owned owner
Maine
Standard 2021-07-10 ValidFAA registration status code V: Valid registration. All codes
N738KJ Cessna
172N
Fixed-wing, single engine Fly Compton Aeronautical Education Foundation
Compton, California
Standard 2021-07-10 ValidFAA registration status code V: Valid registration. All codes
N7417R Piper
PA-28-140
Fixed-wing, single engine Destination Flyer LLC
Memphis, Tennessee
Standard 2021-07-10 ValidFAA registration status code V: Valid registration. All codes
N8409L Cessna
172I
Fixed-wing, single engine
Standard 2021-07-10 ValidFAA registration status code V: Valid registration. All codes
N910PF Cessna
172M
Fixed-wing, single engine Certified Aviation LLC
Morristown, New Jersey
Standard 2021-07-10 ValidFAA registration status code V: Valid registration. All codes
N3492Z Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-07-09 ValidFAA registration status code V: Valid registration. All codes
N4012F Piper
PA-28-140
Fixed-wing, single engine National 967.Llc
Rock Hill, South Carolina
Standard 2021-07-09 ValidFAA registration status code V: Valid registration. All codes
N5510F Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wyoming
Standard 2021-07-09 ValidFAA registration status code V: Valid registration. All codes
N7472R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Louisiana
Standard 2021-07-09 ValidFAA registration status code V: Valid registration. All codes
N26860 Gulfstream American Corp
AA-5A
Fixed-wing, single engine Individual owner
Connecticut
Standard 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N2695P Piper
PA-18
Fixed-wing, single engine Individual owner
Montana
Multiple 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N348CH Cessna
172M
Fixed-wing, single engine Ace Flight Center INC
St Thomas, U.S. Virgin Islands
Standard 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N3541E Cessna
172N
Fixed-wing, single engine Clear Skies Aviation LLC
Longs, South Carolina
Standard 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N3963Z Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N5116H Piper
PA-14
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N5142W Piper
PA-28
Fixed-wing, single engine Non-citizen co-owned owner
Washington
Standard 2021-07-08 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N73148 Cessna
172M
Fixed-wing, single engine Kinney Transportation
Columbia, Missouri
Standard 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N80283 Cessna
172M
Fixed-wing, single engine Barxbar Aviation LLC
Mesa, Arizona
Standard 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N8414R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Illinois
Standard 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N9853G Cessna
172L
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N989JL Leakos John T
LEAKOS RV9A
Fixed-wing, single engine Individual owner
Texas
Experimental 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N9937E Cessna
172N
Fixed-wing, single engine 7 and 7 LLC
Leon, Iowa
Standard 2021-07-08 ValidFAA registration status code V: Valid registration. All codes
N1141M Cessna
172L
Fixed-wing, single engine Sunshine Flyers
Auburn, California
Standard 2021-07-07 ValidFAA registration status code V: Valid registration. All codes
N486EM Mason Edward R
RV-9A
Fixed-wing, single engine Individual owner
Oregon
Experimental 2021-07-07 ValidFAA registration status code V: Valid registration. All codes
N61622 Cessna
172M
Fixed-wing, single engine Lexington Flying Club
Richmond, Kentucky
Multiple 2021-07-07 ValidFAA registration status code V: Valid registration. All codes
N12917 Cessna
172M
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2021-07-06 ValidFAA registration status code V: Valid registration. All codes
N32531 Piper
PA-28-151
Fixed-wing, single engine Greenville Flight LLC
Greer, South Carolina
Standard 2021-07-06 ValidFAA registration status code V: Valid registration. All codes
N4394Q Cessna
172L
Fixed-wing, single engine Aircraft Resource Center INC
Lakeville, Minnesota
Standard 2021-07-06 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.