The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 7, 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

These connections as data: /graph/engine/lycoming-o-320-series.json · about the eFlight graph.

Aircraft newest certificates first · 27,315

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N843DP Cessna
172K
Fixed-wing, single engine Choice Aviation LLC
Hamilton, Montana
Standard 2025-06-18 ValidFAA registration status code V: Valid registration. All codes
N9246F Piper
PA-28-161
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-06-18 ValidFAA registration status code V: Valid registration. All codes
N9571H Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-06-18 ValidFAA registration status code V: Valid registration. All codes
N1364U Cessna
172M
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-06-17 ValidFAA registration status code V: Valid registration. All codes
N1698P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-06-17 ValidFAA registration status code V: Valid registration. All codes
N1812J Piper
PA-28-140
Fixed-wing, single engine Echo Aviation II LLC
Akron, Ohio
Standard 2025-06-17 ValidFAA registration status code V: Valid registration. All codes
N32095 Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2025-06-17 ValidFAA registration status code V: Valid registration. All codes
N3435E Cessna
172N
Fixed-wing, single engine Bober Aviation Mountain Flying LLC
Hayesville, North Carolina
Standard 2025-06-17 ValidFAA registration status code V: Valid registration. All codes
N40057 Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
California
Standard 2025-06-17 ValidFAA registration status code V: Valid registration. All codes
N4370K Piper
PA-28-161
Fixed-wing, single engine Hodges Berry Farm LLC
Willacoochee, Georgia
Standard 2025-06-17 ValidFAA registration status code V: Valid registration. All codes
N734NE Cessna
172N
Fixed-wing, single engine Jc&D Aviation LLC
Princeton, Florida
Standard 2025-06-17 ValidFAA registration status code V: Valid registration. All codes
N73619 Cessna
172M
Fixed-wing, single engine Jones & CO LLC
Londonderry, New Hampshire
Standard 2025-06-17 ValidFAA registration status code V: Valid registration. All codes
N8272V Piper
PA-28-161
Fixed-wing, single engine Skybound Aviation LLC
Greensboro, North Carolina
Standard 2025-06-17 ValidFAA registration status code V: Valid registration. All codes
N5758V Beech
A23-19
Fixed-wing, single engine Co-owned owner
South Dakota
Standard 2025-06-16 ValidFAA registration status code V: Valid registration. All codes
N65587 Cessna
172P
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-06-16 ValidFAA registration status code V: Valid registration. All codes
N6912W Piper
PA-28-140
Fixed-wing, single engine Top Flight Aviation Snh LLC
Savannah, Tennessee
Standard 2025-06-16 ValidFAA registration status code V: Valid registration. All codes
N738WC Cessna
172N
Fixed-wing, single engine Brb Grand-Air LLC
Indiantown, Florida
Standard 2025-06-14 ValidFAA registration status code V: Valid registration. All codes
N35411 Cessna
172I
Fixed-wing, single engine Cherry Hill Aviation INC
Freetown, Indiana
Restricted 2025-06-13 ValidFAA registration status code V: Valid registration. All codes
N3870P Piper
PA-22-150
Fixed-wing, single engine Plane Fun INC Tr Trustee
Snellville, Georgia
Standard 2025-06-13 ValidFAA registration status code V: Valid registration. All codes
N423DM Piper
PA-28-140
Fixed-wing, single engine Gga N423Dm LLC
Glendale, Arizona
Standard 2025-06-13 ValidFAA registration status code V: Valid registration. All codes
N5290W Piper
PA-28
Fixed-wing, single engine Withheld at owner's request
Standard 2025-06-13 ValidFAA registration status code V: Valid registration. All codes
N7264F Piper
PA-28-140
Fixed-wing, single engine Podyaire LLC
Ruston, Louisiana
Standard 2025-06-13 ValidFAA registration status code V: Valid registration. All codes
N7288F Piper
PA-28-140
Fixed-wing, single engine J&S Aeronautics LLC
Mcgregor, Texas
Standard 2025-06-13 ValidFAA registration status code V: Valid registration. All codes
N74HP Aviat Aircraft Inc
A-1B
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2025-06-13 ValidFAA registration status code V: Valid registration. All codes
N8UK Bellanca
7GCAA
Fixed-wing, single engine Individual owner
Texas
Standard 2025-06-13 ValidFAA registration status code V: Valid registration. All codes
N12090 Cessna
172M
Fixed-wing, single engine Diaz Aviation LLC
Mount Upton, New York
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N164BW Rose Boyce A
4R6
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N2366J Beech
23
Fixed-wing, single engine Individual owner
New Jersey
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N35615 Cessna
172I
Fixed-wing, single engine Individual owner
California
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N35678 Cessna
172I
Fixed-wing, single engine Individual owner
Illinois
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N5066K Bellanca
7GCAA
Fixed-wing, single engine Shiner Mach LLC
Kingwood, Texas
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N726MM Cessna
172N
Fixed-wing, single engine Riverside Flight Academy LLC
Riverside, California
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N78078 Cessna
172K
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N78395 Cessna
172K
Fixed-wing, single engine Fgds LLC
Louisville, Kentucky
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N95GW Walters Gary W
RV6
Fixed-wing, single engine Skypirate Aviation LLC
Staunton, Virginia
Experimental 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N9635L Cessna
172P
Fixed-wing, single engine Acme Club Training INC
Anchorage, Alaska
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N9650V Cessna
172M
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-06-12 ValidFAA registration status code V: Valid registration. All codes
N256GD Deneal Daniel W
VANS RV6A
Fixed-wing, single engine August Aero LLC
Kalispell, Montana
Experimental 2025-06-11 ValidFAA registration status code V: Valid registration. All codes
N343VH Robinson Helicopter
R22 BETA
Helicopter Higher Ground Helicopters of Cincinnati LLC
Miamisburg, Ohio
Standard 2025-06-11 ValidFAA registration status code V: Valid registration. All codes
N622GP Cessna
172P
Fixed-wing, single engine Twenty Two Ashford LLC
Brentwood, Tennessee
Standard 2025-06-11 ValidFAA registration status code V: Valid registration. All codes
N6442R Piper
PA-28-140
Fixed-wing, single engine Ammozon LLC
Gilbert, Arizona
Standard 2025-06-11 ValidFAA registration status code V: Valid registration. All codes
N6857H Cessna
172M
Fixed-wing, single engine New Mexico Flying Eagle INC
Tucson, Arizona
Standard 2025-06-11 ValidFAA registration status code V: Valid registration. All codes
N7839G Cessna
172L
Fixed-wing, single engine Gerty Air LLC
Sidney, Maine
Standard 2025-06-11 ValidFAA registration status code V: Valid registration. All codes
N9369D Piper
PA-18A 150
Fixed-wing, single engine Individual owner
Delaware
Standard 2025-06-11 ValidFAA registration status code V: Valid registration. All codes
N9908U Grumman American Avn. Corp.
AA-5A
Fixed-wing, single engine Individual owner
Connecticut
Standard 2025-06-11 ValidFAA registration status code V: Valid registration. All codes
N996JH Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-06-11 ValidFAA registration status code V: Valid registration. All codes
N1201F Cessna
172N
Fixed-wing, single engine Red Door Aviation LLC
Dover, Delaware
Standard 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N12641 Cessna
172M
Fixed-wing, single engine Wanda Collins Professional Pilot Services LLC
Madisonville, Texas
Standard 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N335RL Dupuis Real
RV-6A
Fixed-wing, single engine Individual owner
Florida
Experimental 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N56694 Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N56DW Piper
PA-18-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N5YT Long Richard M
C.P.60 SUPER DIAMANT
Fixed-wing, single engine Individual owner
Alaska
Experimental 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N738CZ Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N7793D Piper
PA-18-150
Fixed-wing, single engine Individual owner
Oregon
Standard 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N84863 Cessna
172K
Fixed-wing, single engine Pierce Aerospace LLC
Hammond, Louisiana
Standard 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N8498D Piper
PA-22-150
Fixed-wing, single engine Big Boy Business LLC
Oklahoma City, Oklahoma
Standard 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N9680C Piper
PA-28-161
Fixed-wing, single engine Individual owner
North Carolina
Standard 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N9803Y Champion
7GCB
Fixed-wing, single engine Individual owner
Montana
Restricted 2025-06-10 ValidFAA registration status code V: Valid registration. All codes
N733AE Cessna
172N
Fixed-wing, single engine Mackey Aviation LLC
Talking Rock, Georgia
Standard 2025-06-09 ValidFAA registration status code V: Valid registration. All codes
N733KV Cessna
172N
Fixed-wing, single engine Sutton Aircraft Salvage LLC
Palmer, Alaska
Standard 2025-06-09 ValidFAA registration status code V: Valid registration. All codes
N8351 Pitts Special
SC-1
Fixed-wing, single engine Individual owner
California
Experimental 2025-06-09 ValidFAA registration status code V: Valid registration. All codes
N8408B Piper
PA-28-161
Fixed-wing, single engine Co-owned owner
New York
Standard 2025-06-09 ValidFAA registration status code V: Valid registration. All codes
N88083 Bellanca
7GCBC
Fixed-wing, single engine N3542W INC
Wilmington, Delaware
Standard 2025-06-09 ValidFAA registration status code V: Valid registration. All codes
N12738 Cessna
172M
Fixed-wing, single engine 1928 LLC
Dillon, Montana
Standard 2025-06-06 ValidFAA registration status code V: Valid registration. All codes
N140DD Piper
PA-28-140
Fixed-wing, single engine Be Right Back Aviation LLC
Billings, Montana
Standard 2025-06-06 ValidFAA registration status code V: Valid registration. All codes
N161KM Piper
PA-28-161
Fixed-wing, single engine Paris Air INC
Vero Beach, Florida
Standard 2025-06-06 ValidFAA registration status code V: Valid registration. All codes
N172EW Cessna
172M
Fixed-wing, single engine Individual owner
Arizona
Standard 2025-06-06 ValidFAA registration status code V: Valid registration. All codes
N241PC American Champion Aircraft
7GCBC
Fixed-wing, single engine Individual owner
California
Standard 2025-06-06 ValidFAA registration status code V: Valid registration. All codes
N269JL Londo Jim
GLASTAR
Fixed-wing, single engine Individual owner
Arizona
Experimental 2025-06-06 ValidFAA registration status code V: Valid registration. All codes
N646SA Symphony Aircraft Ind Inc
SA 160
Fixed-wing, single engine ABC Aviation LLC
Floresville, Texas
Standard 2025-06-06 ValidFAA registration status code V: Valid registration. All codes
N7190L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Kentucky
Standard 2025-06-06 ValidFAA registration status code V: Valid registration. All codes
N797DT Cessna
172K
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-06-06 ValidFAA registration status code V: Valid registration. All codes
N1287U Cessna
172M
Fixed-wing, single engine Trekraken Aviation LLC
Scottsdale, Arizona
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N1936W Beech
B19
Fixed-wing, single engine Individual owner
Washington
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N323GS Bellanca
7GCBC
Fixed-wing, single engine Individual owner
New York
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N3883P Piper
PA-18-150
Fixed-wing, single engine Montana Air Service CORP
Big Timber, Montana
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N4317Q Cessna
172L
Fixed-wing, single engine Individual owner
Ohio
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N5503U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N65756 Vassallo Frank J
RV-4
Fixed-wing, single engine Individual owner
Georgia
Experimental 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N7055R Piper
PA-28-140
Fixed-wing, single engine Withheld at owner's request
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N737GU Cessna
172N
Fixed-wing, single engine Wings Over Texas Holdings LLC
Denton, Texas
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N73830 Cessna
172N
Fixed-wing, single engine Individual owner
Tennessee
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N8419R Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N9552L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Indiana
Standard 2025-06-05 ValidFAA registration status code V: Valid registration. All codes
N3309J Cessna
150G
Fixed-wing, single engine Momentum Foundation
Tullahoma, Tennessee
Standard 2025-06-04 ValidFAA registration status code V: Valid registration. All codes
N6279W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-06-04 ValidFAA registration status code V: Valid registration. All codes
N79431 Cessna
172K
Fixed-wing, single engine Individual owner
Illinois
Standard 2025-06-04 ValidFAA registration status code V: Valid registration. All codes
N108HG Maule
MX-7-160
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2025-06-03 ValidFAA registration status code V: Valid registration. All codes
N4355M Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2025-06-03 ValidFAA registration status code V: Valid registration. All codes
N6780W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Texas
Standard 2025-06-03 ValidFAA registration status code V: Valid registration. All codes
N683FL Piper
PA-28-140
Fixed-wing, single engine Individual owner
Nebraska
Standard 2025-06-03 ValidFAA registration status code V: Valid registration. All codes
N926JP American Champion Aircraft
7GCAA
Fixed-wing, single engine Jl Aviation LLC
Crestwood, Kentucky
Standard 2025-06-03 ValidFAA registration status code V: Valid registration. All codes
N934B Bovington Samuel R
VANS RV-6
Fixed-wing, single engine Rdp Air LLC
Viroqua, Wisconsin
Experimental 2025-06-03 ValidFAA registration status code V: Valid registration. All codes
N994KS Shannon Kevin
VANS RV-9A
Fixed-wing, single engine Eegt INC
Helena, Montana
Experimental 2025-06-03 ValidFAA registration status code V: Valid registration. All codes
N1750T Piper
PA-28-140
Fixed-wing, single engine Van Strand Investments LLC
Fruita, Colorado
Standard 2025-06-02 ValidFAA registration status code V: Valid registration. All codes
N3361B Piper
PA-22-135
Fixed-wing, single engine Individual owner
North Carolina
Experimental 2025-06-02 ValidFAA registration status code V: Valid registration. All codes
N5410Y Piper
PA-18-150
Fixed-wing, single engine Foxtrot Air LLC
Highmore, South Dakota
Standard 2025-06-02 ValidFAA registration status code V: Valid registration. All codes
N7245J Piper
PA-28-140
Fixed-wing, single engine Individual owner
New York
Standard 2025-06-02 ValidFAA registration status code V: Valid registration. All codes
N9939W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2025-06-02 ValidFAA registration status code V: Valid registration. All codes
N7030R Piper
PA-28-140
Fixed-wing, single engine Alpha Kilo Aviation LLC
Wasilla, Alaska
Standard 2025-05-31 ValidFAA registration status code V: Valid registration. All codes
Previous Page 27 of 200 Next

Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.