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

These connections as data: /graph/engine/lycoming-io-540-series.json · about the eFlight graph.

Aircraft newest certificates first · 4,218

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N2363S Cessna
182S
Fixed-wing, single engine 182 Skylane LLC
Loxahatchee, Florida
Standard 2024-12-27 ValidFAA registration status code V: Valid registration. All codes
N301KG Piper
PA-32R-301
Fixed-wing, single engine 217 Aviation LLC
Winchester, Illinois
Standard 2024-12-27 ValidFAA registration status code V: Valid registration. All codes
N355M Piper
PA-23-250
Fixed-wing, multi-engine Delaware Trust Company Owner Trustee
Wilmington, Delaware
Restricted 2024-12-27 ValidFAA registration status code V: Valid registration. All codes
N79WW Cessna
206H
Fixed-wing, single engine Windward Aviation INC
Puunene, Hawaii
Standard 2024-12-27 ValidFAA registration status code V: Valid registration. All codes
N9298L Piper
PA-32R-301
Fixed-wing, single engine Individual owner
California
Standard 2024-12-26 ValidFAA registration status code V: Valid registration. All codes
N4783W Rockwell International
114
Fixed-wing, single engine Cmt Properties INC
Dover, Delaware
Standard 2024-12-21 ValidFAA registration status code V: Valid registration. All codes
N56446 Maule
M-6-235
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-12-21 ValidFAA registration status code V: Valid registration. All codes
N9572A Cessna
182S
Fixed-wing, single engine Eagle Eye Marketing LLC
Reno, Nevada
Standard 2024-12-21 ValidFAA registration status code V: Valid registration. All codes
N567TB Socata
TB-20 TRINIDAD
Fixed-wing, single engine 567Tb LLC
Rockford, Ohio
Standard 2024-12-18 ValidFAA registration status code V: Valid registration. All codes
N8216T Piper
PA-32-301
Fixed-wing, single engine
Standard 2024-12-17 ValidFAA registration status code V: Valid registration. All codes
N17FR Maule
M-7-235C
Fixed-wing, single engine Noe Aviation Ok LLC
Watonga, Oklahoma
Standard 2024-12-16 ValidFAA registration status code V: Valid registration. All codes
N695DT Piper
PA-32R-301
Fixed-wing, single engine Withheld at owner's request
Standard 2024-12-16 ValidFAA registration status code V: Valid registration. All codes
N9554T Cessna
T206H
Fixed-wing, single engine Oceanic Airlines LLC
Portsmouth, New Hampshire
Standard 2024-12-16 ValidFAA registration status code V: Valid registration. All codes
N1012Y Cessna
182T
Fixed-wing, single engine Individual owner
Washington
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N124WJ Cessna
182T
Fixed-wing, single engine Co-owned owner
Texas
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N6069N Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Pennsylvania
Standard 2024-12-14 ValidFAA registration status code V: Valid registration. All codes
N926TC Cessna
182S
Fixed-wing, single engine Tango Charlie LLC
Gig Harbor, Washington
Standard 2024-12-13 ValidFAA registration status code V: Valid registration. All codes
N425RT Socata
TB21TC
Fixed-wing, single engine N425Rt LLC
Kalispell, Montana
Standard 2024-12-12 ValidFAA registration status code V: Valid registration. All codes
N42MX Zacherl
MXZ
Fixed-wing, single engine Red Baron LLC
Middletown, Delaware
Experimental 2024-12-12 ValidFAA registration status code V: Valid registration. All codes
N602WK Piper
PA-60-602P
Fixed-wing, multi-engine Strange River INC
Dripping Springs, Texas
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N6073A Piper
AEROSTAR 601P
Fixed-wing, multi-engine Ijet LLC
Clarence Center, New York
Standard 2024-12-11 ValidFAA registration status code V: Valid registration. All codes
N14AE Maule
M-7-260C
Fixed-wing, single engine Co-owned owner
Florida
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N300WF Cessna
182S
Fixed-wing, single engine Co-owned owner
Washington
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N3420M Piper
PA-32RT-300
Fixed-wing, single engine Moview Aviation LLC
Mountain View, Missouri
Standard 2024-12-10 ValidFAA registration status code V: Valid registration. All codes
N106CM Mclean Clarence D
F1 ROCKET
Fixed-wing, single engine Individual owner
Washington
Experimental 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N31078 Maule
M-7-235B
Fixed-wing, single engine Co-owned owner
Alaska
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N560EH Robinson Helicopter
R44 II
Helicopter Safeflightops LLC
Venetia, Pennsylvania
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N7266Y Cessna
206H
Fixed-wing, single engine Avero Aviation LLC
Dover, Delaware
Standard 2024-12-09 ValidFAA registration status code V: Valid registration. All codes
N424ST Cessna
182T
Fixed-wing, single engine Co-owned owner
Rhode Island
Standard 2024-12-06 ValidFAA registration status code V: Valid registration. All codes
N18PM Cessna
182S
Fixed-wing, single engine Individual owner
Illinois
Standard 2024-12-05 ValidFAA registration status code V: Valid registration. All codes
N629TC Cessna
182T
Fixed-wing, single engine Aviation Trust Company LLC Trustee
Oklahoma City, Oklahoma
Standard 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N8442L Piper
PA-32R-301
Fixed-wing, single engine Individual owner
California
Standard 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N921JM Robinson Helicopter
R44 II
Helicopter Flight Equity LLC
Fayetteville, Arkansas
Standard 2024-11-26 ValidFAA registration status code V: Valid registration. All codes
N208TH Piper
PA-32R-301
Fixed-wing, single engine N208Th LLC
Villa Rica, Georgia
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N85CJ Socata
TB-20 TRINIDAD
Fixed-wing, single engine Co-owned owner
Tennessee
Standard 2024-11-25 ValidFAA registration status code V: Valid registration. All codes
N105TC Piper
PA-32-300
Fixed-wing, single engine Mark Johnson and Sons Plumbing LLC
Ruston, Louisiana
Standard 2024-11-23 ValidFAA registration status code V: Valid registration. All codes
N2192P Cessna
182T
Fixed-wing, single engine Sandoval Tax Cpas INC
Bakersfield, California
Standard 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N9203R Piper
PA-32R-301
Fixed-wing, single engine Southern Fabrication & Welding LLC
El Dorado, Arkansas
Standard 2024-11-22 ValidFAA registration status code V: Valid registration. All codes
N75VX Maule
M-7-235B
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-11-21 ValidFAA registration status code V: Valid registration. All codes
N114VC Commander Aircraft Co
114-B
Fixed-wing, single engine Individual owner
Texas
Standard 2024-11-18 ValidFAA registration status code V: Valid registration. All codes
N322AS Maule
MT-7-235
Fixed-wing, single engine Individual owner
Alaska
Standard 2024-11-18 ValidFAA registration status code V: Valid registration. All codes
N326JL Otto Lee H
LH290
Fixed-wing, single engine Vvc Aviation LLC
Erie, Colorado
Experimental 2024-11-18 ValidFAA registration status code V: Valid registration. All codes
N498HP Piper
PA-32R-301
Fixed-wing, single engine Safe Flight Ops LLC
Venetia, Pennsylvania
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N755CA Piper
PA-32R-301
Fixed-wing, single engine Believe It Two LLC
Sumter, South Carolina
Standard 2024-11-15 ValidFAA registration status code V: Valid registration. All codes
N4195E Cessna
182S
Fixed-wing, single engine Husky Central LLC
Hugo, Oklahoma
Standard 2024-11-14 ValidFAA registration status code V: Valid registration. All codes
N8077Y Piper
PA-32R-301
Fixed-wing, single engine Magenta Line LLC
Geneva, New York
Standard 2024-11-13 ValidFAA registration status code V: Valid registration. All codes
N4145V Piper
PA-32R-301
Fixed-wing, single engine Grassroots Aviation LLC
Norfolk, Nebraska
Standard 2024-11-09 ValidFAA registration status code V: Valid registration. All codes
N3219P Rockwell International
114
Fixed-wing, single engine Shoot LLC
River Ridge, Louisiana
Standard 2024-11-07 ValidFAA registration status code V: Valid registration. All codes
N555DL Piper
PA-32-300
Fixed-wing, single engine Individual owner
Iowa
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N700YP Piper
AEROSTAR 601P
Fixed-wing, multi-engine Delta Delta LLC
Fargo, North Dakota
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N785W Robinson Helicopter
R44 II
Helicopter Prbi LLC
Catano, Puerto Rico
Standard 2024-11-06 ValidFAA registration status code V: Valid registration. All codes
N29LL Smith
AEROSTAR 601P
Fixed-wing, multi-engine Denver Rock Island Railroad
Commerce City, Colorado
Standard 2024-11-05 ValidFAA registration status code V: Valid registration. All codes
N31871 Piper
PA-32-300
Fixed-wing, single engine Individual owner
Minnesota
Standard 2024-11-05 ValidFAA registration status code V: Valid registration. All codes
N597CB Piper
PA-32R-301
Fixed-wing, single engine Brandon Air LLC
Valley Stream, New York
Standard 2024-11-05 ValidFAA registration status code V: Valid registration. All codes
N186TC Robinson Helicopter
R44 II
Helicopter Nauti By Nature LLC
Colorado Springs, Colorado
Standard 2024-11-04 ValidFAA registration status code V: Valid registration. All codes
N2162L Cessna
182T
Fixed-wing, single engine N2162L LLC
Tyler, Texas
Standard 2024-11-04 ValidFAA registration status code V: Valid registration. All codes
N7264D Cessna
206H
Fixed-wing, single engine Gravity & Grace LLC
Mill Valley, California
Standard 2024-11-04 ValidFAA registration status code V: Valid registration. All codes
N8075J Piper
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
Oregon
Standard 2024-11-02 ValidFAA registration status code V: Valid registration. All codes
N38338 Piper
PA-32R-300
Fixed-wing, single engine Rafter W Ranches LLC
Johnson, Kansas
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N54HR Lucas John W
VANS RV-4/HRM RCKET
Fixed-wing, single engine Individual owner
Texas
Experimental 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N883DF Robinson Helicopter
R44 II
Helicopter Aerial AG Services LLC
Hillsboro, Texas
Standard 2024-11-01 ValidFAA registration status code V: Valid registration. All codes
N244RA Robinson Helicopter
R44 II
Helicopter MD AG Services LLC
Sterling City, Texas
Multiple 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N52753 Cessna
182T
Fixed-wing, single engine Omark Aviation LLC
Naples, Florida
Standard 2024-10-31 ValidFAA registration status code V: Valid registration. All codes
N243ME Cessna
206H
Fixed-wing, single engine Individual owner
Georgia
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N295SB Piper
PA-23-250
Fixed-wing, multi-engine Chagres Aero LLC
Albuquerque, New Mexico
Restricted 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N34JC Piper
PA-32-300
Fixed-wing, single engine A2B Aviation LLC
Newark, Ohio
Standard 2024-10-30 ValidFAA registration status code V: Valid registration. All codes
N2220Y Cessna
182T
Fixed-wing, single engine Farid Zia Physical Therapist A Professional CORP
El Centro, California
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N82457 Piper
PA-32-301
Fixed-wing, single engine Individual owner
Connecticut
Standard 2024-10-29 ValidFAA registration status code V: Valid registration. All codes
N430R Ackland Jeffrey Dean
SH-3R
Fixed-wing, single engine Individual owner
Washington
Experimental 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N722CP Cessna
182S
Fixed-wing, single engine Falcon 118 Denver LLC
Tiburon, California
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N735SW Cessna
182T
Fixed-wing, single engine 5 Sierra Whiskey LLC
Sonora, California
Standard 2024-10-28 ValidFAA registration status code V: Valid registration. All codes
N242CD Cool/Deboer
STARDUSTER TOO SA300
Fixed-wing, single engine Individual owner
Washington
Experimental 2024-10-25 ValidFAA registration status code V: Valid registration. All codes
N3559R Cessna
182T
Fixed-wing, single engine Co-owned owner
Delaware
Standard 2024-10-25 ValidFAA registration status code V: Valid registration. All codes
N596TC Piper
PA-32-300
Fixed-wing, single engine Winyah Aviation LLC
Wilmington, Delaware
Standard 2024-10-25 ValidFAA registration status code V: Valid registration. All codes
N142FA Frank Krause
F1 ROCKET EVO
Fixed-wing, single engine Individual owner
Florida
Experimental 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N540MM Ellis David L
STOD HAMILTON SH3R
Fixed-wing, single engine Individual owner
Alabama
Experimental 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N6196G Cessna
182T
Fixed-wing, single engine First Air Service LLC
Show Low, Arizona
Standard 2024-10-24 ValidFAA registration status code V: Valid registration. All codes
N74651 Robinson Helicopter
R44 II
Helicopter Echo Foxtrot Holdings LLC
Midway, Utah
Standard 2024-10-23 ValidFAA registration status code V: Valid registration. All codes
N9565M Cessna
182S
Fixed-wing, single engine Bitterroot Ventures LLC
Show Low, Arizona
Standard 2024-10-21 ValidFAA registration status code V: Valid registration. All codes
N129BA Cessna
182T
Fixed-wing, single engine Advise By Air LLC
Whittier, California
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N2121X Cessna
182T
Fixed-wing, single engine Taylor Commercial Properties LLC
Jackson, Tennessee
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N261KT Smith
AEROSTAR 601P
Fixed-wing, multi-engine Individual owner
California
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N4193Y Cessna
182S
Fixed-wing, single engine Co-owned owner
Illinois
Standard 2024-10-18 ValidFAA registration status code V: Valid registration. All codes
N121SX Robinson Helicopter
R44 II
Helicopter Withheld at owner's request
Standard 2024-10-17 ValidFAA registration status code V: Valid registration. All codes
N397ME Cessna
182S
Fixed-wing, single engine Lima Air LLC
Cape Coral, Florida
Standard 2024-10-15 ValidFAA registration status code V: Valid registration. All codes
N399T Cessna
182S
Fixed-wing, single engine Bg Flight Group LLC
Bowling Green, Kentucky
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N6125P Cessna
182T
Fixed-wing, single engine Individual owner
Ohio
Standard 2024-10-10 ValidFAA registration status code V: Valid registration. All codes
N238MC Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Iowa
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N700AC Piper
AEROSTAR 601P
Fixed-wing, multi-engine 4Sons LLC
Mayfield, Kentucky
Standard 2024-10-09 ValidFAA registration status code V: Valid registration. All codes
N159DR Cessna
182S
Fixed-wing, single engine Piedmont Flight INC
Winston Salem, North Carolina
Standard 2024-10-08 ValidFAA registration status code V: Valid registration. All codes
N31407 Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Michigan
Standard 2024-10-04 ValidFAA registration status code V: Valid registration. All codes
N288MC Cessna
182T
Fixed-wing, single engine Individual owner
Texas
Standard 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N6075Z Piper
AEROSTAR 601P
Fixed-wing, multi-engine Modular Aviation LLC
Saratoga Springs, Utah
Standard 2024-10-03 ValidFAA registration status code V: Valid registration. All codes
N966R Piper
PA-32R-301
Fixed-wing, single engine Co-owned owner
Pennsylvania
Standard 2024-10-02 ValidFAA registration status code V: Valid registration. All codes
N188GT Socata
TB-20 TRINIDAD
Fixed-wing, single engine I&F LLC
Overland Park, Kansas
Standard 2024-09-28 ValidFAA registration status code V: Valid registration. All codes
N964SM Slingsby
T67M-260
Fixed-wing, single engine Co-owned owner
Texas
Experimental 2024-09-26 ValidFAA registration status code V: Valid registration. All codes
N8088B Piper
PA-32-300
Fixed-wing, single engine Withheld at owner's request
Standard 2024-09-24 ValidFAA registration status code V: Valid registration. All codes
N121LT Dream 10 Llc
RV-10
Fixed-wing, single engine Dream 10 LLC
Dunnellon, Florida
Experimental 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N420CS Cessna
182T
Fixed-wing, single engine Sugar Lips Aviation LLC
Kalispell, Montana
Standard 2024-09-23 ValidFAA registration status code V: Valid registration. All codes
N520LP Pipistrel
PANTHERA X152
Electric airplane Dpanthera LLC
Salem, Oregon
Experimental 2024-09-23 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 7, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.