The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 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.

Fitted to model families

Piper PA-32 Cherokee Six, Lance and Saratoga1,059Cessna 182 Skylane978Robinson R44294Piper PA-23 Apache and Aztec175Daher (Socata) TB-20151Maule M-7108Cessna 206 Stationair99Piper AEROSTAR 60184Rockwell International 11478Commander Aircraft Co 11463Maule M-647Maule MT-742

Piper PA-32 Cherokee Six, Lance and Saratoga · Cessna 182 Skylane · Robinson R44 · Piper PA-23 Apache and Aztec · Daher (Socata) TB-20 · Maule M-7 · Cessna 206 Stationair · Piper AEROSTAR 601 · Rockwell International 114 · Commander Aircraft Co 114

Where they are owner's state

Texas419Florida399California295Delaware218North Carolina124Georgia123Michigan115Pennsylvania109Alaska109Alabama108

Kind of aircraft

Piston singles3,503 (83%)Piston twins410 (10%)Helicopters296 (7%)Turboprops9 (0.2%)

When the aircraft were built by decade

03356701,0041,33919401950196019701980199020002010562020

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 Textron Lycoming Avco Corporation). 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

Parts most often reported as the reports name them

Magneto19Cylinder10Bearing8Gasket8Bolt7Boot7Actuator6Line6Pump6Baffle5

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 Textron Lycoming Avco Corporation · 73 models listed · revised August 1, 1998

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
N83924 Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Texas
Standard 2025-04-08 ValidFAA registration status code V: Valid registration. All codes
N295TC Commander Aircraft Co
114TC
Fixed-wing, single engine 295Tc LLC
Cape Coral, Florida
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N674TG Maule
M-6-235
Fixed-wing, single engine Stallion Air LLC
Springtown, Texas
Standard 2025-04-03 ValidFAA registration status code V: Valid registration. All codes
N82239 Piper
PA-32-301
Fixed-wing, single engine 7 Dolors LLC
Urbana, Ohio
Standard 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N999DS David Schorr
VANS RV-10
Fixed-wing, single engine Individual owner
Florida
Experimental 2025-04-01 ValidFAA registration status code V: Valid registration. All codes
N389ME Cessna
182S
Fixed-wing, single engine Whitewillow LLC
Minooka, Illinois
Standard 2025-03-28 ValidFAA registration status code V: Valid registration. All codes
N836TB Cessna
182S
Fixed-wing, single engine East of Nowhere Aviation LLC
Highland, Utah
Standard 2025-03-28 ValidFAA registration status code V: Valid registration. All codes
N6854Y Piper
PA-23-250
Fixed-wing, multi-engine Chagres Flight Training LLC
Albuquerque, New Mexico
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N701WM Smith
AEROSTAR 601P
Fixed-wing, multi-engine B&B Aerospace LLC
Rosamond, California
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N797CL Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Maryland
Standard 2025-03-27 ValidFAA registration status code V: Valid registration. All codes
N92ET Piper
PA-28-236
Fixed-wing, single engine Individual owner
Minnesota
Standard 2025-03-26 ValidFAA registration status code V: Valid registration. All codes
N619WC Cessna
182T
Fixed-wing, single engine Individual owner
Georgia
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N89VG Piper
PA-32RT-300
Fixed-wing, single engine Sky Kings Aviation LLC
Missoula, Montana
Standard 2025-03-25 ValidFAA registration status code V: Valid registration. All codes
N17CG Gray Charles B
GLASAIR III
Fixed-wing, single engine Co-owned owner
Florida
Experimental 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N337AB Piper
PA-25
Fixed-wing, single engine Plane and Simple Leasing LLC
Delano, Minnesota
Standard 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N4294N Piper
PA-32R-301
Fixed-wing, single engine Coastal Aviation LLC
Virginia Beach, Virginia
Standard 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N8400F Revo Inc
LAKE 250
Fixed-wing, single engine 337 Skymaster INC
Miami, Florida
Standard 2025-03-24 ValidFAA registration status code V: Valid registration. All codes
N2800X Socata
TB-20 TRINIDAD
Fixed-wing, single engine Affordable Aircraft & Components LLC
Manorville, New York
Standard 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N90253 Piper
PA-23-250
Fixed-wing, multi-engine Individual owner
Tennessee
Standard 2025-03-21 ValidFAA registration status code V: Valid registration. All codes
N168DS Cessna
182S
Fixed-wing, single engine Vertx Fleet Holdings LLC
San Diego, California
Standard 2025-03-20 ValidFAA registration status code V: Valid registration. All codes
N88AV Socata
TB-20 TRINIDAD
Fixed-wing, single engine N88Av LLC
Fort Myers, Florida
Standard 2025-03-19 ValidFAA registration status code V: Valid registration. All codes
N53PG Pickerell L/Gibson G
HARMON ROCKET II
Fixed-wing, single engine Individual owner
Texas
Experimental 2025-03-18 ValidFAA registration status code V: Valid registration. All codes
N713PM Cessna
182S
Fixed-wing, single engine Westbank Fishing LLC
New Orleans, Louisiana
Standard 2025-03-18 ValidFAA registration status code V: Valid registration. All codes
N2380Z Piper
PA-23-250
Fixed-wing, multi-engine Copeland Medical LLC
Jonesboro, Arkansas
Standard 2025-03-16 ValidFAA registration status code V: Valid registration. All codes
N3045K Piper
PA-32-300
Fixed-wing, single engine N3045K LLC
Belton, Texas
Standard 2025-03-16 ValidFAA registration status code V: Valid registration. All codes
N6787Y Piper
PA-23-250
Fixed-wing, multi-engine Coachron Investments
Grosse Ile, Michigan
Standard 2025-03-15 ValidFAA registration status code V: Valid registration. All codes
N65957 Cessna
182T
Fixed-wing, single engine Skybourne LLC
Stuart, Virginia
Standard 2025-03-14 ValidFAA registration status code V: Valid registration. All codes
N2200J Piper
PA-32RT-300
Fixed-wing, single engine Old Prairie Products INC
Angola, Indiana
Standard 2025-03-13 ValidFAA registration status code V: Valid registration. All codes
N6069Y Piper
PA-23-250
Fixed-wing, multi-engine Angelman Aviation LLC
Prosper, Texas
Standard 2025-03-13 ValidFAA registration status code V: Valid registration. All codes
N6383C Cessna
182T
Fixed-wing, single engine Co-owned owner
Georgia
Standard 2025-03-13 ValidFAA registration status code V: Valid registration. All codes
N1HW Wallace-Hale
SKYBOLT
Fixed-wing, single engine Individual owner
Florida
Experimental 2025-03-11 ValidFAA registration status code V: Valid registration. All codes
N315JP Piper
AEROSTAR 600
Fixed-wing, multi-engine Individual owner
Kentucky
Standard 2025-03-11 ValidFAA registration status code V: Valid registration. All codes
N622 Robinson Helicopter
R44 II
Helicopter Chambliss Aerobatics LLC
Chandler, Arizona
Standard 2025-03-11 ValidFAA registration status code V: Valid registration. All codes
N9476F Cessna
182S
Fixed-wing, single engine F & M Miya LLC
Hanford, California
Standard 2025-03-11 ValidFAA registration status code V: Valid registration. All codes
N262CL Cessna
182T
Fixed-wing, single engine Giga Energy INC
Buna, Texas
Standard 2025-03-10 ValidFAA registration status code V: Valid registration. All codes
N8041B Piper
PA-32R-301
Fixed-wing, single engine Ichtou LLC
Dover, Delaware
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N82372 Piper
PA-32R-301
Fixed-wing, single engine Individual owner
New York
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N84366 Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2025-03-06 ValidFAA registration status code V: Valid registration. All codes
N20BZ Piper
AEROSTAR 602P
Fixed-wing, multi-engine First State Aviation Services LLC
Louisburg, North Carolina
Standard 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N544SH Robinson Helicopter
R44 II
Helicopter AG Farmacy Applications LLC
Erie, Illinois
Multiple 2025-03-05 ValidFAA registration status code V: Valid registration. All codes
N233JD Robinson Helicopter
R44 II
Helicopter Sulphur Creek Helicopters LLC
Three Rivers, Texas
Standard 2025-03-04 ValidFAA registration status code V: Valid registration. All codes
N100EE Robinson Helicopter
R44 II
Helicopter Concho Aviation LLC
Sterling City, Texas
Multiple 2025-03-03 ValidFAA registration status code V: Valid registration. All codes
N14934 Piper
PA-23-250
Fixed-wing, multi-engine Csc Delaware Trust CO Owner Trustee
Wilmington, Delaware
Restricted 2025-03-03 ValidFAA registration status code V: Valid registration. All codes
N2170V Piper
PA-32-300
Fixed-wing, single engine B A Aeronautics LLC
Norridge, Illinois
Standard 2025-03-02 ValidFAA registration status code V: Valid registration. All codes
N25KW Piper
PA-32R-301
Fixed-wing, single engine Flyguys Holdings LLC
Yardley, Pennsylvania
Standard 2025-03-01 ValidFAA registration status code V: Valid registration. All codes
N301BH Piper
PA-32R-301
Fixed-wing, single engine Co-owned owner
Louisiana
Standard 2025-03-01 ValidFAA registration status code V: Valid registration. All codes
N47553 Piper
PA-32R-300
Fixed-wing, single engine Turbine Mentor LLC
Granbury, Texas
Standard 2025-03-01 ValidFAA registration status code V: Valid registration. All codes
N921TT Zivko Aeronautics Inc
EDGE 540-T
Fixed-wing, single engine Red Baron LLC
Middletown, Delaware
Experimental 2025-03-01 ValidFAA registration status code V: Valid registration. All codes
N5252S Piper
PA-32-300
Fixed-wing, single engine Fkf LLC
Imperial, Nebraska
Standard 2025-02-27 ValidFAA registration status code V: Valid registration. All codes
N7274S Cessna
182S
Fixed-wing, single engine Wltf LLC
Frisco, Texas
Standard 2025-02-25 ValidFAA registration status code V: Valid registration. All codes
N520MA Piper
PA-32R-301
Fixed-wing, single engine L3 Wolfpack Sigma LLC
Lenexa, Kansas
Standard 2025-02-24 ValidFAA registration status code V: Valid registration. All codes
N5887N Rockwell International
114A
Fixed-wing, single engine Berkshire Commander Air LLC
Pittsfield, Massachusetts
Standard 2025-02-24 ValidFAA registration status code V: Valid registration. All codes
N1074C Cessna
182T
Fixed-wing, single engine Zata Group LLC
North Little Rock, Arkansas
Standard 2025-02-22 ValidFAA registration status code V: Valid registration. All codes
N432NC Piper
PA-32RT-300
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-02-22 ValidFAA registration status code V: Valid registration. All codes
N6558E Cessna
182T
Fixed-wing, single engine Zata Group LLC
North Little Rock, Arkansas
Standard 2025-02-22 ValidFAA registration status code V: Valid registration. All codes
N231LD Williams Leroy
POW1
Fixed-wing, single engine Co-owned owner
Michigan
Experimental 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N300DT Piper
PA-32-300
Fixed-wing, single engine Alaska Bush Charters LLC
Dillingham, Alaska
Standard 2025-02-21 ValidFAA registration status code V: Valid registration. All codes
N5644W Maule
M-5-235C
Fixed-wing, single engine Haynon Aircraft Services LLC
Palmer, Alaska
Restricted 2025-02-20 ValidFAA registration status code V: Valid registration. All codes
N8188J Piper
PA-32R-301
Fixed-wing, single engine Crossbrook LLC
Willoughby, Ohio
Standard 2025-02-20 ValidFAA registration status code V: Valid registration. All codes
N10AB Smith
AEROSTAR 600
Fixed-wing, multi-engine Am Defense
St Johns, Florida
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N1142U Cessna
182T
Fixed-wing, single engine Corporacion Dbm LLC
Miami, Florida
Standard 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N268DM Martin Wayne L
HARMON ROCKET II
Fixed-wing, single engine Co-owned owner
Arizona
Experimental 2025-02-19 ValidFAA registration status code V: Valid registration. All codes
N7266Z Cessna
206H
Fixed-wing, single engine Bearing Tree Land Surveying LLC
Oklahoma City, Oklahoma
Standard 2025-02-18 ValidFAA registration status code V: Valid registration. All codes
N107PF Cessna
182S
Fixed-wing, single engine Individual owner
Florida
Standard 2025-02-17 ValidFAA registration status code V: Valid registration. All codes
N28018 Bellanca
17-31ATC
Fixed-wing, single engine Individual owner
North Dakota
Standard 2025-02-17 ValidFAA registration status code V: Valid registration. All codes
N419PH Piper
PA-32-300
Fixed-wing, single engine Taylor Septic Services LLC
Deltona, Florida
Standard 2025-02-17 ValidFAA registration status code V: Valid registration. All codes
N579ER Cessna
182T
Fixed-wing, single engine 22 H20 LLC
Montgomery, Texas
Standard 2025-02-13 ValidFAA registration status code V: Valid registration. All codes
N233TR Robinson Helicopter
R44 II
Helicopter Park Industries INC
Corona, California
Standard 2025-02-12 ValidFAA registration status code V: Valid registration. All codes
N235PM Maule
M-7-235C
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-02-10 ValidFAA registration status code V: Valid registration. All codes
N729RG Piper
PA-32-300
Fixed-wing, single engine Mad Dog Services LLC
Vero Beach, Florida
Standard 2025-02-10 ValidFAA registration status code V: Valid registration. All codes
N8333C Piper
PA-32-301
Fixed-wing, single engine Individual owner
New York
Standard 2025-02-10 ValidFAA registration status code V: Valid registration. All codes
N163RK Robinson Helicopter
R44 II
Helicopter Individual owner
Illinois
Standard 2025-02-07 ValidFAA registration status code V: Valid registration. All codes
N7781E Cessna
182T
Fixed-wing, single engine Co-owned owner
California
Standard 2025-02-06 ValidFAA registration status code V: Valid registration. All codes
N3010T Piper
PA-32-300
Fixed-wing, single engine Co-owned owner
Oklahoma
Standard 2025-02-05 ValidFAA registration status code V: Valid registration. All codes
N3999 Piper
PA-32-301
Fixed-wing, single engine International Air Service INC Trustee
Carson City, Nevada
Standard 2025-01-30 ValidFAA registration status code V: Valid registration. All codes
N580AG Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Florida
Standard 2025-01-30 ValidFAA registration status code V: Valid registration. All codes
N495TC Commander Aircraft Co
114TC
Fixed-wing, single engine
Standard 2025-01-29 ValidFAA registration status code V: Valid registration. All codes
N8299V Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Maryland
Standard 2025-01-29 ValidFAA registration status code V: Valid registration. All codes
N823MG Piper
PA-32-301
Fixed-wing, single engine Individual owner
Texas
Standard 2025-01-27 ValidFAA registration status code V: Valid registration. All codes
N9794C Piper
PA-32-300
Fixed-wing, single engine Taylor Aero Flights INC
Wilmington, Delaware
Standard 2025-01-27 ValidFAA registration status code V: Valid registration. All codes
N2453H Cessna
182S
Fixed-wing, single engine Ap Aviation LLC
Orange Beach, Alabama
Standard 2025-01-25 ValidFAA registration status code V: Valid registration. All codes
N73CP Piper
PA32-301FT
Fixed-wing, single engine Quality Concrete LLC
Brentwood, Tennessee
Standard 2025-01-25 ValidFAA registration status code V: Valid registration. All codes
N1828M Cessna
182S
Fixed-wing, single engine Individual owner
Michigan
Standard 2025-01-23 ValidFAA registration status code V: Valid registration. All codes
N214HR Paul Schaetzel
SCHAETZEL HRII
Fixed-wing, single engine Individual owner
Idaho
Experimental 2025-01-22 ValidFAA registration status code V: Valid registration. All codes
N283LP Cessna
182S
Fixed-wing, single engine Individual owner
Florida
Standard 2025-01-22 ValidFAA registration status code V: Valid registration. All codes
N11KP Price James R
F-1
Fixed-wing, single engine Individual owner
Florida
Experimental 2025-01-21 ValidFAA registration status code V: Valid registration. All codes
N428JG Robinson Helicopter
R44 II
Helicopter Dr Rotors LLC
Mccall, Idaho
Standard 2025-01-21 ValidFAA registration status code V: Valid registration. All codes
N7306X Cessna
R182
Fixed-wing, single engine 06X-Ray LLC
El Paso, Texas
Standard 2025-01-21 ValidFAA registration status code V: Valid registration. All codes
N660BB Piper
PA-23-250
Fixed-wing, multi-engine Keys Vacation Rentals LLC
Palm City, Florida
Standard 2025-01-20 ValidFAA registration status code V: Valid registration. All codes
N86JD Robinson Helicopter
R44 II
Helicopter Individual owner
Tennessee
Standard 2025-01-19 ValidFAA registration status code V: Valid registration. All codes
N103TX Cessna
182T
Fixed-wing, single engine Individual owner
South Carolina
Standard 2025-01-16 ValidFAA registration status code V: Valid registration. All codes
N2147N Piper
PA-32-300
Fixed-wing, single engine N701Bt LLC
Carmel, Indiana
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N6895D Piper
AEROSTAR 602P
Fixed-wing, multi-engine Pw Air LLC
Rockingham, Virginia
Standard 2025-01-15 ValidFAA registration status code V: Valid registration. All codes
N38305 Piper
PA-32R-300
Fixed-wing, single engine Wulf Aerospace LLC
Santa Rosa Beach, Florida
Standard 2025-01-14 ValidFAA registration status code V: Valid registration. All codes
N448KG Piper
PA-32R-301
Fixed-wing, single engine Individual owner
Virginia
Standard 2025-01-08 ValidFAA registration status code V: Valid registration. All codes
N214LE Cessna
182T
Fixed-wing, single engine 3 Weens LLC
Hoschton, Georgia
Standard 2025-01-06 ValidFAA registration status code V: Valid registration. All codes
N6353M Cessna
182T
Fixed-wing, single engine Mont Belvieu Materials INC
Mont Belvieu, Texas
Standard 2025-01-03 ValidFAA registration status code V: Valid registration. All codes
N1972K Piper
PA-32R-300
Fixed-wing, single engine Bachtac Aviation LLC
Clarksville, Texas
Standard 2025-01-02 ValidFAA registration status code V: Valid registration. All codes
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
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Source: FAA Civil Aviation Registry, Releasable Aircraft Database (the engine reference table and each aircraft's engine code), October 5, 2026. Horsepower and thrust are the FAA's figures for the series, not for a particular aircraft.