• Ultralight • Light sport aircraft • EASA certified aircraft

    Ultralight • Light sport aircraft • EASA certified aircraft

    Production of UL & LSA sport aircraft Viper SD4 and Skyper GT9
  • Production of modern all-metal sport planes

    Production of modern all-metal sport planes

    Modern aircraft for sale • ideal for travel, flight school, and relax flying
  • Ultralight and Light Sport Aircraft production

    Ultralight and Light Sport Aircraft production

    Info for the pilots, lovers of flying, and for the joy of flying
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About the Company

About the Company

TOMARK, s.r.o. in its division TomarkAero produces all-metal aircraft Viper SD4 and Skyper GT9 Read More
Certificates

Certificates

TOMARK, s.r.o. is a holder of a quality certificate ISO and a lot of aviation organizations Read More
Flight School

Flight School

We offer you high quality theoretical and practical pilot training. Everything about the TomarkAero Flight School Read More
Gallery

Gallery

Look the interesting photogallery, full of beautiful photos of our products Viper and Skyper Read More
Aircraft for Sale

Aircraft for Sale

Current offer of new and second-hand aeroplanes. Just choose. Read More
Eshop

Eshop

Eshop not only for fans of Viper SD4 and Skyper GT9. Just for anyone who enjoy the flying Read More
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TomarkAero Products:

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Viper SD4 RTC has been certified according to EASA certification specifications CS-LSA

and has obtained EASA certificate

GALLERY OF VIPER SD4 AND SKYPER GT9 AT SIGNIFICANT EVENTS 2017

MAKS Moscow (RUS)

 

EAA Air Venture Oshkosh (USA)

 

Air Expo Lyon (FRA)

 

Aero Friedrichshafen (GER)

 

Aircraft manufacturing process

Development and manufacture of the Viper SD4 and Skyper GT9 Ultralight (UL) / Light Sport Aircraft  (LSA) planes, is done in TOMARK s.r.o., TomarkAero and TomarkAero CZ Division, by experienced specialists in aviation and mechanical engineering. The latest technologies and CAD systems, as well as CNC machining, are used in their manufacturing.

We offer you exclusive photos from the production and finishing, unique photos from strength tests of the plane’s structure under various loads. The uniqueness of Viper SD4 is also in the fact that it is one of the few planes in its category that have successfully passed the elasticity tests of all its parts, the so-called Flutter tests. Viper SD4 successfully mastered the SPIN tests, which are necessary for obtaining a certificate EASA CS-LSA. Viper SD4 RTC has been certified according to EASA certification specifications CS-LSA Amdt.1. EASA.A.606

Our primary intention is to offer you, our partners, customers, and aviation enthusiasts, specialised information, quality consulting and exclusive documentation. If you like the things you learn, photos and videos, or if they inspire you or encourage you to propose a change or modification, please let us know. We look forward to your views and ideas.

Gallery of Manufacture

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Development and Design
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Production and Testing
 
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Strength Tests
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Flutter Tests
 

News

  • Update of Viper SD4 RTC dashboard

    Viper SD4 RTC (EASA cert.) - update of dashboard-new Garmin VHF NAV/COM.

    Read More
  • Viper Initiates First U.S. Flights

    Eagle International Aircrafts L.L.C. announced that the FAA has finally certified and approved Viper’s SD-4 for U.S. Market. Since this announcement, the Viper SD-4 has begun flights at North Perry Airport, Florida.

    Read More
  • Viper SD4 certified towing aircraft

    Viper SD4 obtained the Certificate (in UL category) for towing of gliders in France

    Read More
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What Our Clients Say

  • The old adage says: As the aircraft looks like, as well as flies. In this case of Viper SD4 that applies to 110%. Cab tilts rearward, boarding is therefore very comfortable. The dashboard, in our case "Glass cockpit” with backup analogue instruments, is very comprehensible. The controls are placed in the natural reach of the pilot and where they should be. The manufacturer offers a range of levels and avionics, so everyone can choose according to your tastes.Very suitable is also the location and shape of the gas handle, the raised pedestal in the middle of the dashboard. Under the throttle control is as well-located brake and electrical control flaps. I perceive Viper as excellent aircraft for various pilots and flight fans.

    Miroslav RAKUŠAN, test pilot (Czech Republic)

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FLASH NEWS

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Bon Voyage!

Viper SD4 (UL category) in France. Fly with us and enjoy the adventure


Viper SD4 all-metal LSA

Interview of Dan Johnson with Adrian Lecky, sales agent of Viper SD4 in US


Excellent avionics

Brand new Viper SD4 with an excellent and impressive instrument panel


Viper SD4 Test Flight

Capt Gema Goeyardi did a test flight on Viper SD4 during Oshkosh 2017

If we have captured your interest, or if you have any questions, please let us know

CONTACT US