VIPER SD4 ALL-METAL LSA - Interview of Dan Johnson with Adrian Lecky, sales agent of Viper SD4 in USDevelopment 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.
We bring you a few innovations that we have introduced in the development and production of certified Viper SD4 RTC and Viper SD4 Night - VFR aircraft based on the experience of pilots, active communication and changing market requirements. MORE INFO
Viper SD4 and Skyper GT9 websites
We bring you a product web sites Viper SD4 and Skyper GT9. Inside you'll find extensive information and gallery of TomarkAero products
The Viper is part of a new generation of flying machines, the finest European engineering is merged in this aircraft; is agile, is light, and flies like a Ferrari. I have been landing and departing in all kinds of runways across the US with the SD4, and every landing and departure was a unique experience in comfort and adventure. The canopy design gives you an unbeatable panoramic view no matter if you fly to the beach, commute or training, and with an unbelievable fuel consumption of five gallons per hour. "
Gonzalo Rodrigues, CFI (Chile)
FLASH NEWS
Current offer of brand new Viper SD4 aircraft
Modern design and special atractive digital HDX touch equipment
A new addition to the Skyper GT9 family. Very popular and interesting
Another Viper SD4 in a white-red combination to Poland
Viper SD4 
Skyper GT9 
