The U.S. aircraft register, updated daily
Engines · piston (reciprocating) · data as of October 5, 2026

Lycoming AEIO-540 series

434 aircraft on the U.S. register carry a Lycoming AEIO-540 series engine, rated at about 260 horsepower. The Extra Flugzeugbau Gmbh EA-300 is the model most often fitted with it (112 aircraft). The aircraft carrying it were built between 1977 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 AEIO-540 series. FAA spelling: AEIO-540 SER.

Fitted to model families

Extra Flugzeugbau Gmbh EA-300112Aviat Inc PITTS S-2B69Christen Industries Inc PITTS S-2B53Aviat Aircraft Inc S-244Pitts Aerobatics S-219Aerotek Inc PITTS S-2B13Zivko Aeronautics Inc EDGE 54012Aviat Aircraft Inc PITTS S-2B9Extra Flugzeugbau EA 3007Mx Aircraft Co MXS4Mxr Technologies Inc MXS4Grob-Werke G 120A3

Extra Flugzeugbau Gmbh EA-300 · Aviat Inc PITTS S-2B · Christen Industries Inc PITTS S-2B · Aviat Aircraft Inc S-2 · Pitts Aerobatics S-2 · Aerotek Inc PITTS S-2B · Zivko Aeronautics Inc EDGE 540 · Aviat Aircraft Inc PITTS S-2B · Extra Flugzeugbau EA 300 · Mx Aircraft Co MXS

Where they are owner's state

California51Texas35Florida31Delaware28Arizona19Georgia18Oregon13Colorado13Wyoming12Montana12

Kind of aircraft

Piston singles431 (99%)Piston twins3 (0.7%)

When the aircraft were built by decade

047941401871195011960219707119801871990972000122010102020

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

No FAA order in the current files names this engine series. Operators and repair shops have filed 150 failure reports with the FAA since 1995, 4 of them in the last ten years.

Failure reports 150 since · what operators and shops told the FAA

0612182402071219226

Parts most often reported as the reports name them

Pump17Washer10Ignition Switch8Lever5Switch5Actuator4Baffle4Bearing4Bracket4Servo4

Latest reports

2026-08-13Servo: faulted
2026-05-09Thrust Button: melted
2019-06-11Inertia Reel: inoperative
2019-02-08Buckle: broken
2016-03-03Tension Spring: stiff

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-aeio-540-series.json · about the eFlight graph.

Aircraft newest certificates first · 434

Tail no.Maker and modelGroupOwner and baseCertificateRegisteredStatus
N99JP Pitts Aerobatics
S-2B
Fixed-wing, single engine Cp Aviation INC
Santa Paula, California
Standard 2014-10-16 ValidFAA registration status code V: Valid registration. All codes
N164EX Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Drj Management LLC
Weston, Connecticut
Standard 2014-08-07 ValidFAA registration status code V: Valid registration. All codes
N1YB Clark James R
GLASAIR III SH-3R
Fixed-wing, single engine Individual owner
Colorado
Experimental 2014-07-21 ValidFAA registration status code V: Valid registration. All codes
N9614 Mxr Technologies Inc
MXS
Fixed-wing, single engine Individual owner
Kentucky
Experimental 2014-06-10 ValidFAA registration status code V: Valid registration. All codes
N34PZ Aerotek Inc
PITTS S-2B
Fixed-wing, single engine Pitts S2-B Aero LLC
Newport Beach, California
Standard 2014-05-22 ValidFAA registration status code V: Valid registration. All codes
N260PG Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Utah
Standard 2014-05-16 ValidFAA registration status code V: Valid registration. All codes
N4444M Pzl-Mielec
M26
Fixed-wing, single engine Turbine Conversions LTD
Nunica, Michigan
Standard 2014-05-07 ValidFAA registration status code V: Valid registration. All codes
N6025L Pitts Aerobatics
S-2B
Fixed-wing, single engine Individual owner
California
Standard 2014-03-26 ValidFAA registration status code V: Valid registration. All codes
N92WS Aviat Inc
PITTS S-2B
Fixed-wing, single engine Flyboy 71 LLC
Kalamazoo, Michigan
Standard 2013-10-22 ValidFAA registration status code V: Valid registration. All codes
N136SM Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Martens Aerosports LLC
Garden City, New York
Standard 2013-08-19 ValidFAA registration status code V: Valid registration. All codes
N260SL Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Aeroquest LLC
Harold, Kentucky
Standard 2013-08-16 ValidFAA registration status code V: Valid registration. All codes
N6081U Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Florida
Standard 2013-06-20 ValidFAA registration status code V: Valid registration. All codes
N41EX Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Minnesota
Standard 2013-05-31 ValidFAA registration status code V: Valid registration. All codes
N104MX Mx Aircraft Llc
MXS
Fixed-wing, single engine Individual owner
Virginia
Experimental 2013-05-14 ValidFAA registration status code V: Valid registration. All codes
N25CH Pitts Aerobatics
S-2B
Fixed-wing, single engine Planes of Fame Air Museum
Chino, California
Experimental 2013-04-16 ValidFAA registration status code V: Valid registration. All codes
N85TG Watkins Thomas G Iii
GLASAIR III
Fixed-wing, single engine Williams Field LLC
Gig Harbor, Washington
Experimental 2013-02-12 ValidFAA registration status code V: Valid registration. All codes
N50ZL Moravan
ZLIN Z50 LA
Fixed-wing, single engine Individual owner
California
Experimental 2012-11-15 ValidFAA registration status code V: Valid registration. All codes
N800XT Mxr Technologies Inc
MXS
Fixed-wing, single engine Connor Air LTD
Miamisburg, Ohio
Experimental 2012-10-26 ValidFAA registration status code V: Valid registration. All codes
N43BT Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Alaska
Standard 2012-09-26 ValidFAA registration status code V: Valid registration. All codes
N303UT Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Aviation Performance Solutions LLC
Mesa, Arizona
Standard 2012-07-26 ValidFAA registration status code V: Valid registration. All codes
N808JP Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Oregon
Standard 2012-07-17 ValidFAA registration status code V: Valid registration. All codes
N160FU Aerotek Inc
PITTS S-2B
Fixed-wing, single engine Extreme Attitude Recovery & Aerobatics LLC
Cincinnati, Ohio
Standard 2012-06-20 ValidFAA registration status code V: Valid registration. All codes
N540RB Extra Flugzeugbau Gmbh
EA-300
Fixed-wing, single engine Individual owner
Texas
Experimental 2012-05-07 ValidFAA registration status code V: Valid registration. All codes
N5311J Aerotek Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Delaware
Standard 2012-04-23 ValidFAA registration status code V: Valid registration. All codes
N12QW Pitts Aerobatics
S-2B
Fixed-wing, single engine All Aviation LLC
Tucson, Arizona
Standard 2012-04-12 ValidFAA registration status code V: Valid registration. All codes
N892M Mortensen Geryl L
S-301
Fixed-wing, single engine Plyler Aviation LP
Sherman, Texas
Experimental 2012-04-11 ValidFAA registration status code V: Valid registration. All codes
N7XT Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Co-owned owner
California
Standard 2012-03-06 ValidFAA registration status code V: Valid registration. All codes
N13KT Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Texas
Standard 2012-02-27 ValidFAA registration status code V: Valid registration. All codes
N54LR Extra Flugzeugbau Gmbh
EA-300
Fixed-wing, single engine Pterodactyl INC
Wilmington, Delaware
Standard 2012-01-31 ValidFAA registration status code V: Valid registration. All codes
N992GL Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Co-owned owner
New Jersey
Standard 2012-01-04 ValidFAA registration status code V: Valid registration. All codes
N60827 Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
New York
Standard 2011-12-23 ValidFAA registration status code V: Valid registration. All codes
N912ST Aviat Inc
PITTS S-2B
Fixed-wing, single engine Aircraft Guaranty CORP Trustee
Oklahoma City, Oklahoma
Standard 2011-11-02 ValidFAA registration status code V: Valid registration. All codes
N694ED Extra Flugzeugbau Gmbh
EA-300
Fixed-wing, single engine Co-owned owner
California
Standard 2011-10-04 ValidFAA registration status code V: Valid registration. All codes
N260SJ Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Florida
Standard 2011-09-20 ValidFAA registration status code V: Valid registration. All codes
N17PW Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Washington
Standard 2011-08-26 ValidFAA registration status code V: Valid registration. All codes
N540SS Skip Stewart
PITTS S-2S
Fixed-wing, single engine Code Supplies INC
Rossville, Tennessee
Experimental 2011-07-20 ValidFAA registration status code V: Valid registration. All codes
N53NL Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Co-owned owner
Massachusetts
Standard 2011-06-22 ValidFAA registration status code V: Valid registration. All codes
N48EW Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Texas
Standard 2011-04-16 ValidFAA registration status code V: Valid registration. All codes
N910SH Roth Scott
F-1 ROCKET
Fixed-wing, single engine F-1 Aviation LLC
Port Orange, Florida
Experimental 2011-03-17 ValidFAA registration status code V: Valid registration. All codes
N535AZ Pzl-Mielec
M2601
Fixed-wing, single engine Buzz Rickson Aviation LLC
Wilmington, Delaware
Standard 2010-11-23 ValidFAA registration status code V: Valid registration. All codes
N8XT Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Montana
Standard 2010-08-03 ValidFAA registration status code V: Valid registration. All codes
N58DE Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Texas
Standard 2009-11-06 ValidFAA registration status code V: Valid registration. All codes
N36MT Aviat Inc
PITTS S-2B
Fixed-wing, single engine Co-owned owner
Maryland
Standard 2009-04-03 ValidFAA registration status code V: Valid registration. All codes
N9H Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Co-owned owner
Kansas
Standard 2009-03-19 ValidFAA registration status code V: Valid registration. All codes
N6082C Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Tennessee
Standard 2009-03-11 ValidFAA registration status code V: Valid registration. All codes
N189PR Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Texas
Standard 2009-02-12 ValidFAA registration status code V: Valid registration. All codes
N117CL Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Co-owned owner
Minnesota
Standard 2009-02-05 ValidFAA registration status code V: Valid registration. All codes
N519ZB Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Pittsbird LLC
Malvern, Ohio
Standard 2008-12-08 ValidFAA registration status code V: Valid registration. All codes
N51GF Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine North Valley Aircraft INC
Valley City, North Dakota
Standard 2008-10-22 ValidFAA registration status code V: Valid registration. All codes
N125EX Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Iowa
Standard 2008-07-09 ValidFAA registration status code V: Valid registration. All codes
N46EX Extra Flugzeugbau
EA 300/S
Fixed-wing, single engine Withheld at owner's request
Experimental 2007-11-14 ValidFAA registration status code V: Valid registration. All codes
N148TA Aviat Aircraft Inc
S-2C
Fixed-wing, single engine Business Revenue CORP
Newton, Iowa
Standard 2007-09-25 ValidFAA registration status code V: Valid registration. All codes
N49LH Aviat Inc
PITTS S-2B
Fixed-wing, single engine Texas Pitts Partners LLC
Plano, Texas
Standard 2007-06-13 ValidFAA registration status code V: Valid registration. All codes
N199X Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Wyoming
Standard 2007-05-08 ValidFAA registration status code V: Valid registration. All codes
N6087E Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Connecticut
Standard 2007-04-26 ValidFAA registration status code V: Valid registration. All codes
N380BF Aviat Aircraft Inc
S-2C
Fixed-wing, single engine Individual owner
Pennsylvania
Standard 2007-01-22 ValidFAA registration status code V: Valid registration. All codes
N23EX Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Louisiana
Standard 2006-11-29 ValidFAA registration status code V: Valid registration. All codes
N161FC Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Aps Asset Management INC
Mesa, Arizona
Standard 2006-11-27 ValidFAA registration status code V: Valid registration. All codes
N477SF Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Aps Asset Management INC
Mesa, Arizona
Standard 2006-11-22 ValidFAA registration status code V: Valid registration. All codes
N301DE Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Tentacle CORP
Walnut Creek, California
Standard 2006-10-13 ValidFAA registration status code V: Valid registration. All codes
N110PS Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Tennessee
Standard 2006-09-21 ValidFAA registration status code V: Valid registration. All codes
N41CV Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Oregon
Standard 2006-07-03 ValidFAA registration status code V: Valid registration. All codes
N207LH Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Snaproll INC
Wilmington, Delaware
Standard 2006-04-24 ValidFAA registration status code V: Valid registration. All codes
N540F Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Tail Wheel Solutions LLC
Wilmington, Delaware
Standard 2006-04-05 ValidFAA registration status code V: Valid registration. All codes
N1903N Cascade Aircraft Development
CHANUTE
Fixed-wing, single engine Individual owner
Wyoming
Experimental 2006-03-06 ValidFAA registration status code V: Valid registration. All codes
N25AP Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Washington
Standard 2006-01-06 ValidFAA registration status code V: Valid registration. All codes
N260L Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Montana Wingnuts LLC
Kalispell, Montana
Standard 2005-08-10 ValidFAA registration status code V: Valid registration. All codes
N199RG Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Bell Aviation INC
Wilmington, Delaware
Standard 2005-07-07 ValidFAA registration status code V: Valid registration. All codes
N555RL Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Florida
Standard 2005-06-14 ValidFAA registration status code V: Valid registration. All codes
N659DM Avions Mudry Cie
CAP 232
Fixed-wing, single engine Ftr Esc LLC
San Antonio, Texas
Experimental 2005-04-06 ValidFAA registration status code V: Valid registration. All codes
N71A Aviat Inc
PITTS S-2B
Fixed-wing, single engine H & J Airplane LLC
Wilmington, Delaware
Standard 2005-03-16 ValidFAA registration status code V: Valid registration. All codes
N842P Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Colorado
Standard 2004-04-29 ValidFAA registration status code V: Valid registration. All codes
N160DS Salcedo Daniel R
PITTS S-1-11
Fixed-wing, single engine Co-owned owner
Florida
Experimental 2004-04-08 ValidFAA registration status code V: Valid registration. All codes
N42DK Karich Donald
LANCAIR LEGACY
Fixed-wing, single engine Ultimate Answer INC
Surfside, California
Experimental 2004-03-24 ValidFAA registration status code V: Valid registration. All codes
N62TH Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine A H Aero Services LLC
Hiber City, Utah
Standard 2003-12-15 ValidFAA registration status code V: Valid registration. All codes
N315DC Flint Cristopher
FREEBIRD 300
Fixed-wing, single engine Johnstone INC
Wilsonville, Oregon
Experimental 2003-12-12 ValidFAA registration status code V: Valid registration. All codes
N34EX Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
California
Standard 2003-12-03 ValidFAA registration status code V: Valid registration. All codes
N59KK Aviat Inc
PITTS S-2B
Fixed-wing, single engine White Pitts INC
Wilmington, Delaware
Standard 2003-11-08 ValidFAA registration status code V: Valid registration. All codes
N289PR Christen Industries Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
North Carolina
Standard 2003-09-16 ValidFAA registration status code V: Valid registration. All codes
N278SJ Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Oregon
Standard 2002-09-06 ValidFAA registration status code V: Valid registration. All codes
N320PS Aviat Aircraft Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
North Carolina
Standard 2002-08-05 ValidFAA registration status code V: Valid registration. All codes
N5310S Aerotek Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Colorado
Standard 2002-07-24 ValidFAA registration status code V: Valid registration. All codes
N37SG Aviat Aircraft Inc
S-2C
Fixed-wing, single engine Individual owner
Missouri
Standard 2001-09-26 ValidFAA registration status code V: Valid registration. All codes
N39GP Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Extra 2 INC
Newark, Delaware
Standard 2001-09-18 ValidFAA registration status code V: Valid registration. All codes
N271MW Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Delaware
Standard 2001-06-19 ValidFAA registration status code V: Valid registration. All codes
N55NL Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Extra Air LLC
Port Orange, Florida
Standard 2001-06-18 ValidFAA registration status code V: Valid registration. All codes
N14LP Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Idaho
Standard 2001-06-16 ValidFAA registration status code V: Valid registration. All codes
N148F Aviat Aircraft Inc
S-2C
Fixed-wing, single engine Individual owner
Minnesota
Standard 2001-04-04 ValidFAA registration status code V: Valid registration. All codes
N913ST Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Michigan
Standard 2000-12-05 ValidFAA registration status code V: Valid registration. All codes
N161PS Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Tennessee
Standard 2000-10-19 ValidFAA registration status code V: Valid registration. All codes
N79D Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
New Jersey
Standard 2000-10-02 ValidFAA registration status code V: Valid registration. All codes
N555EX Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Individual owner
Georgia
Standard 2000-08-04 ValidFAA registration status code V: Valid registration. All codes
N114PS Aviat Aircraft Inc
S-2C
Fixed-wing, single engine Pitts S2B LLC
Salinas, California
Standard 2000-07-21 ValidFAA registration status code V: Valid registration. All codes
N232DD Cap
CAP 232
Fixed-wing, single engine Individual owner
Texas
Experimental 2000-07-21 ValidFAA registration status code V: Valid registration. All codes
N114RM Aviat Aircraft Inc
S-2C
Fixed-wing, single engine Immelman Leasing Company LLC
Lompoc, California
Standard 2000-06-22 ValidFAA registration status code V: Valid registration. All codes
N142PS Aviat Aircraft Inc
S-2C
Fixed-wing, single engine Sidney Aviation LLC
Sidney, Nebraska
Standard 2000-04-04 ValidFAA registration status code V: Valid registration. All codes
N224TJ Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Georgia
Standard 1999-12-28 ValidFAA registration status code V: Valid registration. All codes
N13EX Extra Flugzeugbau Gmbh
EA 300/L
Fixed-wing, single engine Pitts Capital of Nevada INC
Las Vegas, Nevada
Standard 1999-09-30 ValidFAA registration status code V: Valid registration. All codes
N232X Akrotech
CAP 232
Fixed-wing, single engine Individual owner
Texas
Experimental 1999-04-19 ValidFAA registration status code V: Valid registration. All codes
N434DM Aviat Inc
PITTS S-2B
Fixed-wing, single engine Individual owner
Texas
Standard 1999-02-26 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.