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
N1208M Brock Christopher H
XL ELITE
Fixed-wing, single engine Individual owner
South Carolina
Experimental 2022-07-30 ValidFAA registration status code V: Valid registration. All codes
N701SX Johns William L
JOHNS SA29
Fixed-wing, single engine Individual owner
Colorado
Experimental 2022-07-30 ValidFAA registration status code V: Valid registration. All codes
N74415 Robinson Helicopter
R44 II
Helicopter Flying Low Enterprises LLC
Kenai, Alaska
Standard 2022-07-30 ValidFAA registration status code V: Valid registration. All codes
N240SC Maule
M-7-260C
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-07-29 ValidFAA registration status code V: Valid registration. All codes
N505WC Piper
PA-32R-301
Fixed-wing, single engine Qualitair LLC Trustee
Michelstadt,
Standard 2022-07-28 ValidFAA registration status code V: Valid registration. All codes
N60PR Smith
AEROSTAR 600
Fixed-wing, multi-engine Individual owner
Georgia
Standard 2022-07-27 ValidFAA registration status code V: Valid registration. All codes
N5800 Meyers John T
HARMON ROCKET II
Fixed-wing, single engine Individual owner
Iowa
Experimental 2022-07-25 ValidFAA registration status code V: Valid registration. All codes
N21413 Cessna
182T
Fixed-wing, single engine Co-owned owner
New York
Standard 2022-07-23 ValidFAA registration status code V: Valid registration. All codes
N3187H Maule
M-7-235B
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-07-23 ValidFAA registration status code V: Valid registration. All codes
N1224P Cessna
182T
Fixed-wing, single engine M3 West INC
Modesto, California
Standard 2022-07-19 ValidFAA registration status code V: Valid registration. All codes
N32579 Maule
M-7-260C
Fixed-wing, single engine Ab3 Resources INC
Unionville, Pennsylvania
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N692AS Estumkeda Ltd Dba Micco Acft
MAC-145B
Fixed-wing, single engine Jgm Aviation LLC
Spring, Texas
Standard 2022-07-16 ValidFAA registration status code V: Valid registration. All codes
N5210Q Cessna
182T
Fixed-wing, single engine Fortress Group LLC
Thompsons Station, Tennessee
Standard 2022-07-09 ValidFAA registration status code V: Valid registration. All codes
N52JG Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-07-08 ValidFAA registration status code V: Valid registration. All codes
N68980 Piper
PA-60-602P
Fixed-wing, multi-engine Connected Aviation LLC
Peoria, Illinois
Standard 2022-07-07 ValidFAA registration status code V: Valid registration. All codes
N865WA Piper
PA-32RT-300
Fixed-wing, single engine Yjb Operations LLC
Altoona, Pennsylvania
Standard 2022-07-06 ValidFAA registration status code V: Valid registration. All codes
N668CW Piper
PA-31-350
Fixed-wing, multi-engine Precision Air INC
Anchorage, Alaska
Standard 2022-06-30 ValidFAA registration status code V: Valid registration. All codes
N32TH Harper Thomas E
SKYBOLT
Fixed-wing, single engine Individual owner
South Carolina
Experimental 2022-06-29 ValidFAA registration status code V: Valid registration. All codes
N133KC Harrison P G
HARMON ROCKET II
Fixed-wing, single engine Individual owner
Texas
Experimental 2022-06-28 ValidFAA registration status code V: Valid registration. All codes
N678CC Pilatus Britten-Norman Ltd.
BN-2B-21
Fixed-wing, multi-engine Islander Cc LLC
Doral, Florida
Standard 2022-06-28 ValidFAA registration status code V: Valid registration. All codes
N344BA Aero Comp Inc
COMP AIR 4
Fixed-wing, single engine Individual owner
Experimental 2022-06-23 Reports overdueFAA registration status code N: Non-citizen corporation that has not returned its flight-hour reports. All codes
N31885 Piper
PA-32-300
Fixed-wing, single engine It Is Well
Kennett, Missouri
Standard 2022-06-22 ValidFAA registration status code V: Valid registration. All codes
N601PT Piper
AEROSTAR 601P
Fixed-wing, multi-engine Wf Aviation LLC
Bozeman, Montana
Standard 2022-06-17 ValidFAA registration status code V: Valid registration. All codes
N804LG Smith
AEROSTAR 601P
Fixed-wing, multi-engine Dem Ventures LLC
Wichita, Kansas
Standard 2022-06-16 ValidFAA registration status code V: Valid registration. All codes
N490LL Cessna
182T
Fixed-wing, single engine Antel Av CORP
Lewes, Delaware
Standard 2022-06-15 ValidFAA registration status code V: Valid registration. All codes
N8290X Piper
PA-32-301
Fixed-wing, single engine Individual owner
Ohio
Standard 2022-06-15 ValidFAA registration status code V: Valid registration. All codes
N3327P Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Georgia
Standard 2022-06-13 ValidFAA registration status code V: Valid registration. All codes
N7MU Piper
AEROSTAR 601
Fixed-wing, multi-engine Aerospace Trust Management LLC Trustee
Wilmington, Delaware
Standard 2022-06-13 ValidFAA registration status code V: Valid registration. All codes
N101VR Maule
MT-7-235
Fixed-wing, single engine Individual owner
Alabama
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N13W Piper
PA-32R-301
Fixed-wing, single engine Stl LLC
Savoy, Illinois
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N5340M Piper
PA-32R-301
Fixed-wing, single engine N5340M LLC
Greenville, South Carolina
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N7252S Cessna
182S
Fixed-wing, single engine Individual owner
Kentucky
Standard 2022-06-11 ValidFAA registration status code V: Valid registration. All codes
N6581 David J Dugas
VANS RV-10
Fixed-wing, single engine Individual owner
Florida
Experimental 2022-06-09 ValidFAA registration status code V: Valid registration. All codes
N823BC Iar Sa Brasov
IAR 823
Fixed-wing, single engine Grounded No More Veteran Flight Lift LLC
Queen Creek, Arizona
Experimental 2022-06-09 ValidFAA registration status code V: Valid registration. All codes
N906EL Eric R Rushing
RV-10
Fixed-wing, single engine Co-owned owner
Oregon
Experimental 2022-06-07 ValidFAA registration status code V: Valid registration. All codes
N17HD Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Kentucky
Standard 2022-06-04 ValidFAA registration status code V: Valid registration. All codes
N1039P Cessna
182T
Fixed-wing, single engine N1039P LLC
Suwanee, Georgia
Standard 2022-06-03 ValidFAA registration status code V: Valid registration. All codes
N5188L Cessna
182T
Fixed-wing, single engine Individual owner
Illinois
Standard 2022-05-31 ValidFAA registration status code V: Valid registration. All codes
N1054T Maule
M-7-260
Fixed-wing, single engine International Air Services INC Trustee
Carson City, Nevada
Standard 2022-05-27 ValidFAA registration status code V: Valid registration. All codes
N25219 Socata
TB-20 TRINIDAD
Fixed-wing, single engine Octopus Flying Club INC
Riverdale, Maryland
Standard 2022-05-27 ValidFAA registration status code V: Valid registration. All codes
N28935 Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2022-05-26 ValidFAA registration status code V: Valid registration. All codes
N88128 Eagle Aircraft Co
EAGLE DW-1
Fixed-wing, single engine Individual owner
Arkansas
Restricted 2022-05-26 ValidFAA registration status code V: Valid registration. All codes
N25096 Socata
TB-20 TRINIDAD
Fixed-wing, single engine Green Air LLC
Novato, California
Standard 2022-05-21 ValidFAA registration status code V: Valid registration. All codes
N923DB Cessna
182T
Fixed-wing, single engine Individual owner
Washington
Standard 2022-05-20 ValidFAA registration status code V: Valid registration. All codes
N608TM Piper
PA-32-301
Fixed-wing, single engine Individual owner
North Carolina
Standard 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N7786V Aero Commander
CALLAIR A-9B
Fixed-wing, single engine Zoom Schwartz LLC
Goldthwaite, Texas
Restricted 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N8442P Piper
PA-32R-301
Fixed-wing, single engine Cbfd LLC
Northampton, Pennsylvania
Standard 2022-05-19 ValidFAA registration status code V: Valid registration. All codes
N20GU Socata
TB-20 TRINIDAD
Fixed-wing, single engine Individual owner
California
Standard 2022-05-18 ValidFAA registration status code V: Valid registration. All codes
N81PW Piper
PA-32-301
Fixed-wing, single engine Hart Services LLC
Mt Pleasant, South Carolina
Standard 2022-05-18 ValidFAA registration status code V: Valid registration. All codes
N899JB Piper
PA-32-300
Fixed-wing, single engine Investors Trust CO Trustee
Duncan, Oklahoma
Standard 2022-05-17 ValidFAA registration status code V: Valid registration. All codes
N9539P Cessna
182S
Fixed-wing, single engine Nichols Aviation LLC
Middletown, Delaware
Standard 2022-05-16 ValidFAA registration status code V: Valid registration. All codes
N3738M Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Wisconsin
Standard 2022-05-14 ValidFAA registration status code V: Valid registration. All codes
N4274R Cessna
182S
Fixed-wing, single engine Catset Funding LLC
Coral Gables, Florida
Standard 2022-05-07 ValidFAA registration status code V: Valid registration. All codes
N548R Cessna
182T
Fixed-wing, single engine Co-owned owner
Arkansas
Standard 2022-05-07 ValidFAA registration status code V: Valid registration. All codes
N64CT Piper
PA-32-300
Fixed-wing, single engine Fly2Dig LLC
Laclede, Idaho
Standard 2022-05-07 ValidFAA registration status code V: Valid registration. All codes
N2445V Cessna
182S
Fixed-wing, single engine N2445V Cessna INC Trustee
Wilmington, Delaware
Standard 2022-05-06 ValidFAA registration status code V: Valid registration. All codes
N102MA Cessna
182S
Fixed-wing, single engine Squaw Creek Aviation LLC
Dover, Delaware
Standard 2022-05-05 ValidFAA registration status code V: Valid registration. All codes
N39CP Robinson Helicopter
R44 II
Helicopter Whirl'D Helicopters INC
Sevierville, Tennessee
Standard 2022-05-05 ValidFAA registration status code V: Valid registration. All codes
N62HR Hawkins Nathan
HARMON ROCKET II
Fixed-wing, single engine Individual owner
Nevada
Experimental 2022-05-05 ValidFAA registration status code V: Valid registration. All codes
N2463S Cessna
182T
Fixed-wing, single engine Njnj Aviation LLC
Belmont, California
Standard 2022-05-03 ValidFAA registration status code V: Valid registration. All codes
N298SH Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Montana
Standard 2022-04-30 ValidFAA registration status code V: Valid registration. All codes
N14VM Smith
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Washington
Standard 2022-04-29 ValidFAA registration status code V: Valid registration. All codes
N109RD Dodge Douglas C
DR 109
Fixed-wing, single engine Valiair Limited Company LLC Trustee
Casper, Wyoming
Experimental 2022-04-28 ValidFAA registration status code V: Valid registration. All codes
N2542W Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Indiana
Standard 2022-04-28 ValidFAA registration status code V: Valid registration. All codes
N620EB Bean Wesley W Jr
VAN RV-10
Fixed-wing, single engine Individual owner
South Carolina
Experimental 2022-04-23 ValidFAA registration status code V: Valid registration. All codes
N174CA Piper
PA-32R-301
Fixed-wing, single engine Vy Aeroventure LLC
Bloomfield Hills, Michigan
Standard 2022-04-22 ValidFAA registration status code V: Valid registration. All codes
N210BC Cessna
182S
Fixed-wing, single engine Individual owner
Tennessee
Standard 2022-04-20 ValidFAA registration status code V: Valid registration. All codes
N197DJ Piper
PA-32R-301
Fixed-wing, single engine N197Dj LLC
Palm Harbor, Florida
Standard 2022-04-19 ValidFAA registration status code V: Valid registration. All codes
N28KT Shpakow Thomas
SA 750
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2022-04-19 ValidFAA registration status code V: Valid registration. All codes
N424SV Maule
MT-7-235
Fixed-wing, single engine Individual owner
Oklahoma
Standard 2022-04-19 ValidFAA registration status code V: Valid registration. All codes
N440BP Robinson Helicopter
R44 II
Helicopter Individual owner
Texas
Standard 2022-04-19 ValidFAA registration status code V: Valid registration. All codes
N103DJ Iar Sa Brasov
IAR 823
Fixed-wing, single engine Individual owner
Vermont
Experimental 2022-04-12 ValidFAA registration status code V: Valid registration. All codes
N141CM Christopher C Moran
VANS ACFT INC RV-10
Fixed-wing, single engine Individual owner
Texas
Experimental 2022-04-11 ValidFAA registration status code V: Valid registration. All codes
N135RC Cocozzoli Kevin A
GLASAIR 3
Fixed-wing, single engine Individual owner
Utah
Experimental 2022-04-09 ValidFAA registration status code V: Valid registration. All codes
N117JC Piper
PA-32-301
Fixed-wing, single engine Individual owner
Oregon
Standard 2022-04-05 ValidFAA registration status code V: Valid registration. All codes
N130DP Optica Industries Ltd
OA7 OPTICA
Fixed-wing, single engine Plane@Work LLC
Blaine, Minnesota
Experimental 2022-04-05 ValidFAA registration status code V: Valid registration. All codes
N79HL Piper
PA-23-250
Fixed-wing, multi-engine Indiana Paging Network INC
Laporte, Indiana
Standard 2022-04-05 ValidFAA registration status code V: Valid registration. All codes
N224RX Frieder Kemmann
VELOCITY STD-FG
Fixed-wing, single engine Flyteone Production & Maintenance LLC
Clearwater, Florida
Experimental 2022-04-04 ValidFAA registration status code V: Valid registration. All codes
N303AP Goldberg Mark
AVIPRO BEARHAWK
Fixed-wing, single engine Withheld at owner's request
Experimental 2022-04-04 ValidFAA registration status code V: Valid registration. All codes
N209JM James Murphy
VANS RV-10
Fixed-wing, single engine Individual owner
Michigan
Experimental 2022-04-02 ValidFAA registration status code V: Valid registration. All codes
N624CW Piper
PA-32-301
Fixed-wing, single engine Co-owned owner
California
Standard 2022-04-02 ValidFAA registration status code V: Valid registration. All codes
N833BW Wolff Paul Ronald
GLASAIR III
Fixed-wing, single engine Aircorp Avitation Consulting LLC
Glendale, Arizona
Experimental 2022-04-02 ValidFAA registration status code V: Valid registration. All codes
N3086H Piper
PA-23-250
Fixed-wing, multi-engine Genesis Aviation Enterprises INC
Fort Lauderdale, Florida
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N540G Dodge Douglas
MACHAIRA
Fixed-wing, single engine Individual owner
Illinois
Experimental 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N61AM Smith
AEROSTAR 601B
Fixed-wing, multi-engine N61Am LLC
Kalispell, Montana
Standard 2022-03-31 ValidFAA registration status code V: Valid registration. All codes
N4135J Piper
PA-32R-301
Fixed-wing, single engine Valiair Limited Company Trustee
Casper, Wyoming
Standard 2022-03-29 ValidFAA registration status code V: Valid registration. All codes
N8429N Piper
PA-32-301
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-03-29 ValidFAA registration status code V: Valid registration. All codes
N5804N Rockwell International
114
Fixed-wing, single engine Avioneta LLC
Atwater, Ohio
Standard 2022-03-28 ValidFAA registration status code V: Valid registration. All codes
N767TB Smith
AEROSTAR 601P
Fixed-wing, multi-engine Ox Aviation LLC
Monmouth, Oregon
Standard 2022-03-28 ValidFAA registration status code V: Valid registration. All codes
N32SX Piper
PA32-301FT
Fixed-wing, single engine Dorans Aviation LLC
Yardley, Pennsylvania
Standard 2022-03-26 ValidFAA registration status code V: Valid registration. All codes
N510DF Dunkle Steven P
RV-10
Fixed-wing, single engine Individual owner
Georgia
Experimental 2022-03-21 ValidFAA registration status code V: Valid registration. All codes
N8251V Piper
PA-32-301
Fixed-wing, single engine Marine Service of Guntersville INC
Guntersville, Alabama
Standard 2022-03-21 ValidFAA registration status code V: Valid registration. All codes
N5651E Maule
M-6-235
Fixed-wing, single engine Individual owner
Alaska
Standard 2022-03-18 ValidFAA registration status code V: Valid registration. All codes
N4168Z Piper
PA-32R-301
Fixed-wing, single engine J & K Excavation LLC
Waxahachie, Texas
Standard 2022-03-17 ValidFAA registration status code V: Valid registration. All codes
N700EE Piper
PA-60-602P
Fixed-wing, multi-engine Matteo Properties INC
Wickliffe, Ohio
Standard 2022-03-17 ValidFAA registration status code V: Valid registration. All codes
N235PW Maule
MT-7-235
Fixed-wing, single engine Individual owner
Texas
Standard 2022-03-14 ValidFAA registration status code V: Valid registration. All codes
N322AL Robinson Helicopter
R44 II
Helicopter Hawaii Pacific Aviation INC
Kailua Kona, Hawaii
Standard 2022-03-14 ValidFAA registration status code V: Valid registration. All codes
N26FT Piper
PA-23-250
Fixed-wing, multi-engine Delaware Aircraft Trust LLC Trustee
New Castle, Delaware
Standard 2022-03-09 ValidFAA registration status code V: Valid registration. All codes
N828EJ Robinson Helicopter
R44 II
Helicopter Whirld Helicopters INC
Sevierville, Tennessee
Standard 2022-03-08 ValidFAA registration status code V: Valid registration. All codes
N2162X Piper
PA-32-300
Fixed-wing, single engine Taylor Express Investments INC
Wilmington, Delaware
Standard 2022-03-05 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.