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
N7190B Piper
PA-22-150
Fixed-wing, single engine Individual owner
South Carolina
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N737ZV Cessna
172N
Fixed-wing, single engine Jax Aero LLC
Jacksonville, Florida
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N80496 Cessna
172M
Fixed-wing, single engine Bickel Gregory A
Mckinleyville, California
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N8323A Piper
PA-28-161
Fixed-wing, single engine Wisconsin Aviation INC
Watertown, Wisconsin
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N84342 Cessna
172K
Fixed-wing, single engine Choate Aviation LLC
Summerville, South Carolina
Standard 2021-05-22 ValidFAA registration status code V: Valid registration. All codes
N2630M Cessna
172N
Fixed-wing, single engine Mock Air LLC
Marion, Indiana
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N300DC Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N371DC Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N5005W Piper
PA-28-160
Fixed-wing, single engine Individual owner
New Jersey
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N551PU Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N552PU Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N553PU Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N554PU Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N557PU Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N559PU Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N561PU Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N562PU Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N67296 Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Individual owner
Tennessee
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N901FC Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N902FC Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N903FC Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 ValidFAA registration status code V: Valid registration. All codes
N9217X Piper
PA-28-161
Fixed-wing, single engine Skyborne Airline Academy INC
Vero Beach, Florida
Standard 2021-05-21 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N21732 Cessna
172M
Fixed-wing, single engine Air Puerto Rico CORP
Aguadilla, Puerto Rico
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N3581Q Cessna
172M
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N4814D Cessna
172N
Fixed-wing, single engine Air Puerto Rico CORP
Aguadilla, Puerto Rico
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N55078 Piper
PA-28-140
Fixed-wing, single engine Individual owner
California
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N554PA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Washington
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N5578W Piper
PA-28-150
Fixed-wing, single engine Individual owner
Washington
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N61842 Cessna
172M
Fixed-wing, single engine Skywalker Flight Schoool LLC
Adrian, Michigan
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N6383R Piper
PA-28-140
Fixed-wing, single engine Co-owned owner
Wisconsin
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N6724B Piper
PA-22-150
Fixed-wing, single engine Individual owner
Indiana
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N733AT Cessna
172N
Fixed-wing, single engine Alpha Tango LLC
Lake Village, Arkansas
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N80906 Cessna
172M
Fixed-wing, single engine Red Door Aviation LLC
Dover, Delaware
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N8104C Piper
PA-28-140
Fixed-wing, single engine Fly Cosah LLC
Kalamazoo, Michigan
Standard 2021-05-20 ValidFAA registration status code V: Valid registration. All codes
N13658 Cessna
172M
Fixed-wing, single engine Lake Elmo Aero LLC
Lake Elmo, Minnesota
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N2335E Cessna
172N
Fixed-wing, single engine Mindy Limited LLC
Muscatine, Iowa
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N4444A Piper
PA-22-150
Fixed-wing, single engine Co-owned owner
Alaska
Multiple 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N46324 Cessna
172I
Fixed-wing, single engine Mindy Limited LLC
Muscatine, Iowa
Multiple 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N5193E Cessna
172N
Fixed-wing, single engine R&R Aero Services LLC
Eden Prairie, Minnesota
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N5383W Piper
PA-28
Fixed-wing, single engine Hub City Aviation Academy LLC
Lubbock, Texas
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N6293G Cessna
172N
Fixed-wing, single engine Mindy Limited LLC
Muscatine, Iowa
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N650VV Cessna
172K
Fixed-wing, single engine Mindy Limited LLC
Muscatine, Iowa
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N7050Q Cessna
172L
Fixed-wing, single engine Mindy Limited LLC
Muscatine, Iowa
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N7057Q Cessna
172L
Fixed-wing, single engine Mindy Limited LLC
Muscatine, Iowa
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N80160 Cessna
172M
Fixed-wing, single engine D S Swain Gas CO INC
Washington, North Carolina
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N8622Y Piper
PA-30
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N9552V Cessna
172M
Fixed-wing, single engine Rico Aviation Services INC
Miami, Florida
Standard 2021-05-19 ValidFAA registration status code V: Valid registration. All codes
N1432P Cessna
172P
Fixed-wing, single engine Blue Skies Leasing INC
Port Orange, Florida
Standard 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N2797E Cessna
172N
Fixed-wing, single engine Palm Beach Flyers LLC
Boca Raton, Florida
Standard 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N5150D Cessna
172N
Fixed-wing, single engine Tap Solutions INC
San Diego, California
Standard 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N5370W Piper
PA-28
Fixed-wing, single engine Individual owner
Indiana
Standard 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N629GK King Gary L
CUBBY II
Fixed-wing, single engine Individual owner
Alaska
Experimental 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N78590 Cessna
172K
Fixed-wing, single engine Co-owned owner
Oregon
Standard 2021-05-18 ValidFAA registration status code V: Valid registration. All codes
N105JH Piper
PA-12
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N13384 Cessna
172M
Fixed-wing, single engine Premier Vacations LLC
Haines City, Florida
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N1475V Cessna
172M
Fixed-wing, single engine Global Flight Training Solutions INC
Immokalee, Florida
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N234EC Hunsberger Elden C
GLASAIR
Fixed-wing, single engine Individual owner
Alabama
Experimental 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N3881X Aero Commander
100
Fixed-wing, single engine Individual owner
Louisiana
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N68GJ Piper
PA-28-140
Fixed-wing, single engine Dc Foote & Associates INC
Camarillo, California
Multiple 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N7172Q Cessna
172L
Fixed-wing, single engine Rounds Agronomy LLC
Pierre, South Dakota
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N7216J Piper
PA-28-140
Fixed-wing, single engine Caden Aviation Services LLC
Dallas, Texas
Standard 2021-05-17 ValidFAA registration status code V: Valid registration. All codes
N12459 Cessna
172M
Fixed-wing, single engine Circle S Aviation LLC
Starkville, Mississippi
Standard 2021-05-15 ValidFAA registration status code V: Valid registration. All codes
N13039 Cessna
172M
Fixed-wing, single engine Individual owner
California
Standard 2021-05-15 ValidFAA registration status code V: Valid registration. All codes
N3828P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-05-15 ValidFAA registration status code V: Valid registration. All codes
N9641W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-05-15 ValidFAA registration status code V: Valid registration. All codes
N119HP Piper
PA-28-140
Fixed-wing, single engine Valiair Limited Company Trustee
Casper, Wyoming
Standard 2021-05-14 ValidFAA registration status code V: Valid registration. All codes
N172NC Cessna
172L
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-14 ValidFAA registration status code V: Valid registration. All codes
N3299E Cessna
172N
Fixed-wing, single engine Individual owner
Maryland
Standard 2021-05-14 ValidFAA registration status code V: Valid registration. All codes
N7696D Piper
PA-18A
Fixed-wing, single engine Lottman Aviation LLC
Beatrice, Nebraska
Multiple 2021-05-14 ValidFAA registration status code V: Valid registration. All codes
N162GM Miltenberger Glenn G
MARQUART MA-5
Fixed-wing, single engine Individual owner
Iowa
Experimental 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N2295Y Cessna
177
Fixed-wing, single engine Individual owner
South Carolina
Standard 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N4772E Cessna
172N
Fixed-wing, single engine Individual owner
Michigan
Standard 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N6NG Hansen Gerald L
LONG EZE
Fixed-wing, single engine Individual owner
California
Experimental 2021-05-13 ValidFAA registration status code V: Valid registration. All codes
N123HA Cessna
172M
Fixed-wing, single engine R & R Aviation Services LLC
Festus, Missouri
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N15AF Cessna
172M
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N391LT Piper
PA-28-140
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N701FL Piper
PA-28-140
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N786DJ Piper
PA-28-151
Fixed-wing, single engine Dgj Tex LLC DBA
Cleburne, Texas
Standard 2021-05-12 ValidFAA registration status code V: Valid registration. All codes
N5083K Cessna
172N
Fixed-wing, single engine Individual owner
Texas
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N6542W Piper
PA-28-140
Fixed-wing, single engine Individual owner
Montana
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N73761 Cessna
172N
Fixed-wing, single engine Spring City Aviation INC
Waukesha, Wisconsin
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N8924D Piper
PA-22-160
Fixed-wing, single engine Hickey Aero Services LLC
White Hills, Arizona
Standard 2021-05-11 ValidFAA registration status code V: Valid registration. All codes
N103SA Piper
PA-28-161
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-10 ValidFAA registration status code V: Valid registration. All codes
N1730P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Kentucky
Standard 2021-05-10 ValidFAA registration status code V: Valid registration. All codes
N35770 Cessna
172I
Fixed-wing, single engine Ccb Flyers LLC
Waco, Texas
Standard 2021-05-10 ValidFAA registration status code V: Valid registration. All codes
N5984U Piper
PA-28-140
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-10 ValidFAA registration status code V: Valid registration. All codes
N6476G Cessna
172N
Fixed-wing, single engine Chupito Sabrocito LLC
Paso Robles, California
Standard 2021-05-10 ValidFAA registration status code V: Valid registration. All codes
N20565 Cessna
172M
Fixed-wing, single engine Waters Aero Marine INC
South Thomaston, Maine
Standard 2021-05-08 ValidFAA registration status code V: Valid registration. All codes
N60895 Cessna
150J
Fixed-wing, single engine Individual owner
South Dakota
Standard 2021-05-08 ValidFAA registration status code V: Valid registration. All codes
N7131L Grumman American Avn. Corp.
AA-5
Fixed-wing, single engine Co-owned owner
Virginia
Standard 2021-05-08 ValidFAA registration status code V: Valid registration. All codes
N782CA Piper
PA-28-140
Fixed-wing, single engine Individual owner
Indiana
Standard 2021-05-08 ValidFAA registration status code V: Valid registration. All codes
N9838G Cessna
172L
Fixed-wing, single engine Co-owned owner
South Carolina
Standard 2021-05-08 ValidFAA registration status code V: Valid registration. All codes
N53054 Cessna
172P
Fixed-wing, single engine Individual owner
Ohio
Standard 2021-05-07 ValidFAA registration status code V: Valid registration. All codes
N172JM Cessna
172M
Fixed-wing, single engine Cardinal Wings Aviation LLC
Buckner, Kentucky
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N2325P Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alaska
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N401BJ Johnson William L
LANCAIR 320
Fixed-wing, single engine Individual owner
Indiana
Experimental 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N51MS Cessna
172K
Fixed-wing, single engine Individual owner
California
Multiple 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N53588 Cessna
172P
Fixed-wing, single engine Individual owner
Florida
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N57617 Piper
PA-18-150
Fixed-wing, single engine Elijah Air LLC
Bethel, Alaska
Standard 2021-05-06 ValidFAA registration status code V: Valid registration. All codes
N5855D Piper
PA-22-150
Fixed-wing, single engine Individual owner
Alabama
Standard 2021-05-06 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.