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Edge 73 MS

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Scale 25%     Wingspan 1850 mm

Flight Video

You simply have to try this one, our very best and most advanced plane so far. Using all the experience gained from our previously released EDGE 540 and its 64” version we designed this even bigger evolution including some revolutionary features. For the first time this model presents a brand new method of joining parts – stronger, easier to assemble and more precise.

My Airplane Configuration
Main Color (Used Most)
Add-In Color (Used Less)

The Edge 540, manufactured by Zivko Aeronautics, is as precise and controllable as it is aggressive. The small, one-seater aircraft is a favourite amongst Red Bull Air Race pilots, largely due to its fuselage. The computer optimised, steel tube frame makes the Edge 540 an extremely light, very durable and easily repairable race plane. Using an unconventional straight-edged wing, the Edge 540 sparked much interest in flying circles around the world, particularly after Kirby Chambliss began using it for aerobatic competitions.

The aircraft has since evolved into the highly refined and technologically advanced version of the original prototype, with the radical wing now acknowledged as a pioneering feat of design.

Martin Sonka

Martin Šonka (born March 26, 1978 in Dvůr Králové nad Labem) is a Czech aerobatics (unlimited) and a former fighter pilot in the Czech Air Force. He has raced in Red Bull Air Race World Championship since 2010,[1] becoming the World Champion in the 2018 Red Bull Air Race World Championship season.

Martin Šonka began his aviation career in 1997. In this year he flew a glider for the first time and started his studies at University of Defence in Brno as a pilot. In 1999 he gained his Private Pilot Licence. Between 2001 and 2005 he attended Jan Perner Transport Faculty at University of Pardubice (Department of Transport Management, Marketing and Logistics). He finished his studies with a master‘s degree in 2005.

His military career started in 2000 in Pardubice. Two years after he moved to the air base in Náměšť nad Oslavou and in 2006 to 21st Tactical Air Force Base at Čáslav where he began flying L-159 Alca. In 2012 he has finished the type rating for the Saab JAS 39 Gripen. In 2014 he was forced to leave the army due to his busy racing schedule. In 2005 he became a member of the Czech national aerobatic team. He used to fly Su-31, however in the past few years he is training and competing with Extra 300SR.

In 2009 Šonka passed all Red Bull Air Race qualifying camps and gained The Red Bull Air Race Super Licence. Then he was nominated for a 2010 season rookie.

Data sheet

1835 mm
1850 mm
636 mm
Wing Area
62 dm2
Wing Loading
73.4 g/dm2
Center of Gravity
98 mm from LE
Printed Weight
2415 g
Takeoff Weight (with batt)
4550 g
Max Takeoff Weight
5500 g
Never Exceed Speed (VNE)
150 km/h
Design Maneuvere Speed (VA)
75 km/h
Stall Speed VS (full flaps)
28 km/h
3-Blade 18x8 Wood
Xpwr 30cc V2
MEZON 90-120 Lite
2 x 4S 5000 Mah
Max Speed VH (level flight)
140 km/h
Rate of Climb
33 m/s