The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 8, 2026

Lycoming IO-540 series

4,218 aircraft on the U.S. register carry a Lycoming IO-540 series engine, rated at about 300 horsepower. The Piper PA-32 Cherokee Six, Lance and Saratoga is the model most often fitted with it (1,059 aircraft). The aircraft carrying it were built between 1965 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 IO-540 series (2 codes). FAA spellings: IO-540 SER · IO 540 SER.

When the aircraft were built by decade

By decade built, as a table
aircraft
19402
195013
196096
1970797
1980579
1990748
20001,339
201078
202056

What the FAA has certified, ordered and been told about the Lycoming IO-540 series the component layer

The design is held under 1 type certificate (1E4, held by Lycoming Engines). The FAA has issued 49 airworthiness directives (orders that owners must comply with) that name this engine series. Operators and repair shops have filed 316 failure reports with the FAA since 1995, 17 of them in the last ten years.

FAA orders 49 airworthiness directives · newest first

2026-09-142026-17-10 · Reciprocating Engine Cylinder Section · engine
2026-04-082026-04-11 · Engine (Reciprocating) · engine
2024-12-052024-21-02 · Engine (Reciprocating) · engine
2022-08-152022-16-03 · Engine (RECIPROCATING) · engine
2017-08-152017-16-11 · Reciprocating Engine Power Section · engine
2015-11-032015-19-07 · Fuel injector fuel lines · engine

All orders naming the Lycoming IO-540 series

Failure reports 316 since · what operators and shops told the FAA

012253850950005101523226
Failure reports by year, as a table
reports
953
963
973
984
994
0011
0137
0215
0337
0434
0550
0630
0719
0812
093
1012
112
127
135
146
152
171
194
202
222
231
245
262

Parts most often reported as the reports name them

Magneto19Cylinder10Bearing8Gasket8Bolt7Boot7Actuator6Line6Pump6Baffle5
Parts most reported, as a table
reports
Magneto19
Cylinder10
Bearing8
Gasket8
Bolt7
Boot7
Actuator6
Line6
Pump6
Baffle5

Latest reports

2026-05-09Thrust Button: faulted
2026-01-29Magneto: failed
2024-08-07Magneto: failed
2024-08-06Magneto: failed
2024-03-14Magneto: failed

Certificates and bulletins

1E4Type certificate held by Lycoming Engines · 81 models listed · revised February 28, 2018

Safety bulletins 14 · advice, not orders

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,...
2011-03-31NE-08-26R3 · Magneto/Distributor

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-io-540-series.json.

Aircraft newest certificates first · 4,218

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N17S Sherman Craig W
GLASAIR III
Fixed-wing, single engine Echo Sierra LLC
Lawrenceburg, Tennessee
Experimental 2023-02-15 ValidFAA registration status code V: Valid registration. All codes
N730F Robinson Helicopter
R44 II
Helicopter Putnal Aviation LLC
Ambrose, Georgia
Standard 2023-02-14 ValidFAA registration status code V: Valid registration. All codes
N3036J Piper
PA-32R-300
Fixed-wing, single engine Co-owned owner
Florida
Standard 2023-02-13 ValidFAA registration status code V: Valid registration. All codes
N442TS Robinson Helicopter
R44 II
Helicopter Lehman Aviation LLC
Winamac, Indiana
Standard 2023-02-13 ValidFAA registration status code V: Valid registration. All codes
N8324T Piper
PA-32-301
Fixed-wing, single engine Tango LLC
Chesterfield, Missouri
Standard 2023-02-13 ValidFAA registration status code V: Valid registration. All codes
N111NW Piper
PA-32R-300
Fixed-wing, single engine Knell LLC
Casper, Wyoming
Standard 2023-02-12 ValidFAA registration status code V: Valid registration. All codes
N125LG Cessna
182S
Fixed-wing, single engine Co-owned owner
Nevada
Standard 2023-02-11 ValidFAA registration status code V: Valid registration. All codes
N6162V Cessna
182T
Fixed-wing, single engine Air Ventures Hawaii LLC
Lihue, Hawaii
Standard 2023-02-11 ValidFAA registration status code V: Valid registration. All codes
N829LS Piper
PA-32R-301
Fixed-wing, single engine Starkys Equipment Leasing LLC
Manchester, Michigan
Standard 2023-02-10 ValidFAA registration status code V: Valid registration. All codes
N101W Piper
PA-32R-301
Fixed-wing, single engine Cole-Tac LLC
Rapid City, South Dakota
Standard 2023-02-09 ValidFAA registration status code V: Valid registration. All codes
N300DB Piper
PA-32-300
Fixed-wing, single engine Edeair LLC
Utica, Michigan
Standard 2023-02-09 ValidFAA registration status code V: Valid registration. All codes
N823PB Iar Sa Brasov
IAR 823
Fixed-wing, single engine Individual owner
California
Experimental 2023-02-09 ValidFAA registration status code V: Valid registration. All codes
N915JC Commander Aircraft Co
114-B
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2023-02-09 ValidFAA registration status code V: Valid registration. All codes
N272G Piper
PA-23-250
Fixed-wing, multi-engine Individual owner
Colorado
Standard 2023-02-08 ValidFAA registration status code V: Valid registration. All codes
N3950M Piper
PA-32-300
Fixed-wing, single engine Scifly LLC
San Diego, California
Restricted 2023-02-08 ValidFAA registration status code V: Valid registration. All codes
N406RB Piper
PA-32R-300
Fixed-wing, single engine Airflair INC
Maurice, Iowa
Standard 2023-02-07 ValidFAA registration status code V: Valid registration. All codes
N7181Y Piper
PA-23-250
Fixed-wing, multi-engine Eagle Aeronautics LLC
Chicago, Illinois
Standard 2023-02-07 ValidFAA registration status code V: Valid registration. All codes
N8451B Piper
PA-32R-301
Fixed-wing, single engine Bmw Air LLC
Norwalk, Iowa
Standard 2023-02-07 ValidFAA registration status code V: Valid registration. All codes
N881KE Robinson Helicopter
R44 II
Helicopter Porter Equipment Holdings LLC
Magnolia, Texas
Standard 2023-02-07 ValidFAA registration status code V: Valid registration. All codes
N2233M Cessna
182S
Fixed-wing, single engine Individual owner
Florida
Standard 2023-02-06 ValidFAA registration status code V: Valid registration. All codes
N1493R Cessna
182T
Fixed-wing, single engine Individual owner
Arkansas
Standard 2023-02-03 ValidFAA registration status code V: Valid registration. All codes
N374TC Cessna
182S
Fixed-wing, single engine Precision Aviation Services LLC
Columbiana, Ohio
Standard 2023-02-03 ValidFAA registration status code V: Valid registration. All codes
N9490P Piper
PA-24-260
Fixed-wing, single engine Individual owner
Washington
Standard 2023-02-03 ValidFAA registration status code V: Valid registration. All codes
N2419R Cessna
182S
Fixed-wing, single engine Individual owner
California
Standard 2023-02-02 ValidFAA registration status code V: Valid registration. All codes
N242ME Cessna
206H
Fixed-wing, single engine Mike Echo Ventures LLC
Coral Gables, Florida
Standard 2023-02-02 ValidFAA registration status code V: Valid registration. All codes
N114CT Rockwell International
114
Fixed-wing, single engine Tairex INC
Wilmington, Delaware
Standard 2023-02-01 ValidFAA registration status code V: Valid registration. All codes
N164BD Cessna
182T
Fixed-wing, single engine Individual owner
Texas
Standard 2023-02-01 ValidFAA registration status code V: Valid registration. All codes
N31641 Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2023-02-01 ValidFAA registration status code V: Valid registration. All codes
N4360C Piper
PA-32R-301
Fixed-wing, single engine Bckm LLC
Florida, New York
Standard 2023-02-01 ValidFAA registration status code V: Valid registration. All codes
N182VB Cessna
182S
Fixed-wing, single engine Individual owner
California
Standard 2023-01-31 ValidFAA registration status code V: Valid registration. All codes
N65306 Cessna
182T
Fixed-wing, single engine Bullet Power Brokers INC
Stuart, Florida
Standard 2023-01-31 ValidFAA registration status code V: Valid registration. All codes
N731SM Piper
PA-32RT-300
Fixed-wing, single engine Skyline Flight Services LLC
Millen, Georgia
Standard 2023-01-31 ValidFAA registration status code V: Valid registration. All codes
N974SG Cessna
182S
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-01-31 ValidFAA registration status code V: Valid registration. All codes
N226NA Piper
AEROSTAR 601P
Fixed-wing, multi-engine Polecat Aviation INC
Londonderry, Vermont
Standard 2023-01-30 ValidFAA registration status code V: Valid registration. All codes
N6630A Piper
PA-23-250
Fixed-wing, multi-engine Indigo Associates LTD
Las Vegas, Nevada
Standard 2023-01-30 ValidFAA registration status code V: Valid registration. All codes
N31724 Piper
PA-32RT-300
Fixed-wing, single engine Apostolic Fellowship Assoc
Clearwater, Florida
Standard 2023-01-28 ValidFAA registration status code V: Valid registration. All codes
N348TC Cessna
182T
Fixed-wing, single engine Co-owned owner
Florida
Standard 2023-01-27 ValidFAA registration status code V: Valid registration. All codes
N3646H Piper
AEROSTAR 600
Fixed-wing, multi-engine Individual owner
Texas
Standard 2023-01-27 ValidFAA registration status code V: Valid registration. All codes
N9126S Piper
PA-32-301
Fixed-wing, single engine Individual owner
California
Standard 2023-01-27 ValidFAA registration status code V: Valid registration. All codes
N2017C Cessna
182S
Fixed-wing, single engine Higher Flyer LLC
Northport, Alabama
Standard 2023-01-25 ValidFAA registration status code V: Valid registration. All codes
N31397 Piper
PA-32RT-300
Fixed-wing, single engine Ial CORP
Lewes, Delaware
Standard 2023-01-25 ValidFAA registration status code V: Valid registration. All codes
N952DA Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Texas
Standard 2023-01-25 ValidFAA registration status code V: Valid registration. All codes
N9614C Piper
PA-32-300
Fixed-wing, single engine Bravo Foxtrot Zulu Holdings LLC
Unionville, Connecticut
Standard 2023-01-25 ValidFAA registration status code V: Valid registration. All codes
N9KK Knutson John E
GLASAIR III
Fixed-wing, single engine Individual owner
Arizona
Experimental 2023-01-25 ValidFAA registration status code V: Valid registration. All codes
N74370 Robinson Helicopter
R44 II
Helicopter Ronald A Peterson INC DBA
Orlando, Florida
Standard 2023-01-24 ValidFAA registration status code V: Valid registration. All codes
N762SU Piper
PA-23-250
Fixed-wing, multi-engine Almost There Air LLC
Daytona Beach, Florida
Standard 2023-01-24 ValidFAA registration status code V: Valid registration. All codes
N31241 New Piper Aircraft Inc
PA-32R-301
Fixed-wing, single engine Hotel Charlie Aero LLC
Marshville, North Carolina
Standard 2023-01-23 ValidFAA registration status code V: Valid registration. All codes
N755BE Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Tennessee
Standard 2023-01-23 ValidFAA registration status code V: Valid registration. All codes
N925RP Commander Aircraft Co
114-B
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2023-01-21 ValidFAA registration status code V: Valid registration. All codes
N8385Q Piper
PA-32-301
Fixed-wing, single engine Blue Sky Harbors LLC
Crystal, Minnesota
Standard 2023-01-20 ValidFAA registration status code V: Valid registration. All codes
N3012L Piper
PA-32-300
Fixed-wing, single engine Cwp Flight LLC
Lawton, Oklahoma
Standard 2023-01-19 ValidFAA registration status code V: Valid registration. All codes
N103PZ Maule
M-7-235C
Fixed-wing, single engine Raging Thermal Sky Sports LLC
Brighton, Colorado
Standard 2023-01-18 ValidFAA registration status code V: Valid registration. All codes
N300GS Specketer Gary
GLASAIR III
Fixed-wing, single engine Individual owner
Arizona
Experimental 2023-01-18 ValidFAA registration status code V: Valid registration. All codes
N6409C Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Arizona
Standard 2023-01-18 ValidFAA registration status code V: Valid registration. All codes
N7436C Piper
PA-23-250
Fixed-wing, multi-engine Individual owner
Guam
Standard 2023-01-18 ValidFAA registration status code V: Valid registration. All codes
N270FA Cessna
182T
Fixed-wing, single engine Co-owned owner
Texas
Standard 2023-01-17 ValidFAA registration status code V: Valid registration. All codes
N9277B Piper
PA-32R-301
Fixed-wing, single engine Fishers Shop INC
Xenia, Ohio
Standard 2023-01-17 ValidFAA registration status code V: Valid registration. All codes
N300LW Piper
AEROSTAR 602P
Fixed-wing, multi-engine 2340 LLC
Hellertown, Pennsylvania
Standard 2023-01-16 ValidFAA registration status code V: Valid registration. All codes
N42269 Maule
MT-7-235
Fixed-wing, single engine Individual owner
Texas
Standard 2023-01-16 ValidFAA registration status code V: Valid registration. All codes
N114JA Rockwell International
114
Fixed-wing, single engine Individual owner
Georgia
Standard 2023-01-15 ValidFAA registration status code V: Valid registration. All codes
N123YW Robinson Helicopter
R44 II
Helicopter Maxwell Truck and Equipment LLC
State College, Pennsylvania
Standard 2023-01-14 ValidFAA registration status code V: Valid registration. All codes
N524BQ Cessna
182S
Fixed-wing, single engine Hfaw LLC
Augusta, Georgia
Standard 2023-01-14 ValidFAA registration status code V: Valid registration. All codes
N6199J Piper
PA-32R-300
Fixed-wing, single engine Individual owner
Florida
Standard 2023-01-13 ValidFAA registration status code V: Valid registration. All codes
N684TC Cessna
T206H
Fixed-wing, single engine Pixel King 03 LLC
Fort Worth, Texas
Standard 2023-01-12 ValidFAA registration status code V: Valid registration. All codes
N2662A Cessna
182S
Fixed-wing, single engine Rogers Construction Services INC
Boca Raton, Florida
Standard 2023-01-11 ValidFAA registration status code V: Valid registration. All codes
N60717 Piper
AEROSTAR 601P
Fixed-wing, multi-engine Southern Comfort Horizons LLC
Naples, Florida
Standard 2023-01-08 ValidFAA registration status code V: Valid registration. All codes
N255DH Piper
PA-32R-301
Fixed-wing, single engine Marina Electric INC
Cutler Bay, Florida
Standard 2023-01-06 ValidFAA registration status code V: Valid registration. All codes
N326MC Cessna
182T
Fixed-wing, single engine J&D Petroleum
Tallahassee, Florida
Standard 2023-01-06 ValidFAA registration status code V: Valid registration. All codes
N84023 Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Massachusetts
Standard 2023-01-06 ValidFAA registration status code V: Valid registration. All codes
N1217P Smith
AEROSTAR 601P
Fixed-wing, multi-engine Co-owned owner
Arkansas
Standard 2023-01-05 ValidFAA registration status code V: Valid registration. All codes
N540TM Orcutt William D
GLASAIR III
Fixed-wing, single engine Withheld at owner's request
Experimental 2023-01-03 ValidFAA registration status code V: Valid registration. All codes
N2225S Piper
PA-32-300
Fixed-wing, single engine Ashland Aviation LLC
Ashland, Ohio
Standard 2023-01-02 ValidFAA registration status code V: Valid registration. All codes
N2270K Rockwell International
114
Fixed-wing, single engine Individual owner
Illinois
Standard 2023-01-02 ValidFAA registration status code V: Valid registration. All codes
N23AL Piper
PA-32R-301
Fixed-wing, single engine Pv Aviation LLC
Poland, Ohio
Standard 2023-01-02 ValidFAA registration status code V: Valid registration. All codes
N2329Y Piper
PA-36-300
Fixed-wing, single engine Individual owner
Montana
Restricted 2022-12-31 ValidFAA registration status code V: Valid registration. All codes
N611WL Piper
PA-32RT-300
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2022-12-31 ValidFAA registration status code V: Valid registration. All codes
N9551W Cessna
182S
Fixed-wing, single engine Bcbc Aero Services LLC
Dover, Delaware
Standard 2022-12-29 ValidFAA registration status code V: Valid registration. All codes
N65904 Cessna
182T
Fixed-wing, single engine Electra Aviation LLC
Wilmington, Delaware
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N8415H Piper
PA-32R-301
Fixed-wing, single engine Aeronautica Aviation INC
Port Orange, Florida
Standard 2022-12-26 ValidFAA registration status code V: Valid registration. All codes
N2194L Cessna
182T
Fixed-wing, single engine State of Wisconsin
Madison, Wisconsin
Standard 2022-12-24 ValidFAA registration status code V: Valid registration. All codes
N2340C Cessna
R182
Fixed-wing, single engine Individual owner
North Dakota
Restricted 2022-12-24 ValidFAA registration status code V: Valid registration. All codes
N31388 Piper
PA-32-300
Fixed-wing, single engine Sisk Farms LLC
Hopkinsville, Kentucky
Standard 2022-12-24 ValidFAA registration status code V: Valid registration. All codes
N2006P Cessna
182T
Fixed-wing, single engine Knox Timothy A
Tulsa, Oklahoma
Standard 2022-12-23 ValidFAA registration status code V: Valid registration. All codes
N4508R Piper
PA-32-300
Fixed-wing, single engine Individual owner
South Carolina
Standard 2022-12-23 ValidFAA registration status code V: Valid registration. All codes
N540SG Zivko Aeronautics Inc
EDGE 540
Fixed-wing, single engine Co-owned owner
Alaska
Experimental 2022-12-20 ValidFAA registration status code V: Valid registration. All codes
N921CT Cessna
182T
Fixed-wing, single engine N921Ct LLC
Elkton, Kentucky
Standard 2022-12-19 ValidFAA registration status code V: Valid registration. All codes
N7276P Cessna
182S
Fixed-wing, single engine Co-owned owner
New Mexico
Standard 2022-12-17 ValidFAA registration status code V: Valid registration. All codes
N31TB Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
Texas
Standard 2022-12-15 ValidFAA registration status code V: Valid registration. All codes
N3516M Piper
PA-32RT-300
Fixed-wing, single engine Adamsup Aviation LLC
Wilmington, Delaware
Standard 2022-12-14 ValidFAA registration status code V: Valid registration. All codes
N8062P Piper
PA-32-301
Fixed-wing, single engine Sierra Two Holdings LLC
Vernon, Connecticut
Standard 2022-12-12 ValidFAA registration status code V: Valid registration. All codes
N185LY Cessna
A185F
Fixed-wing, single engine Awesome Classics LLC
Kalispell, Montana
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N429SF Piper
PA-32-300
Fixed-wing, single engine Individual owner
Arkansas
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N7235 Maule
MT-7-235
Fixed-wing, single engine Individual owner
California
Standard 2022-12-10 ValidFAA registration status code V: Valid registration. All codes
N225TM Piper
PA-31-350
Fixed-wing, multi-engine South of Snow Adventures LLC
Hartwell, Georgia
Standard 2022-12-09 ValidFAA registration status code V: Valid registration. All codes
N4128W Piper
PA-32R-301
Fixed-wing, single engine Air Rog LLC
Addison, Illinois
Standard 2022-12-09 ValidFAA registration status code V: Valid registration. All codes
N7269B Cessna
182S
Fixed-wing, single engine Individual owner
Texas
Standard 2022-12-09 ValidFAA registration status code V: Valid registration. All codes
N591PT Piper
PA-32R-300
Fixed-wing, single engine
Standard 2022-12-07 ValidFAA registration status code V: Valid registration. All codes
N139CP Maule
MT-7-235
Fixed-wing, single engine Lai LLC
Pearl, Mississippi
Standard 2022-12-05 ValidFAA registration status code V: Valid registration. All codes
N19BR Piper
PA-60-602P
Fixed-wing, multi-engine Ottopilot LLC
Lewes, Delaware
Standard 2022-12-05 ValidFAA registration status code V: Valid registration. All codes
N299HP Piper
PA-32R-301
Fixed-wing, single engine Air King Transports LLC
Helena, Alabama
Standard 2022-12-05 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.