Tomark Aero (Viper SD4)
ManufacturerUnclaimedSlovak manufacturer of the Viper SD4 certified composite LSA, combining Czech workmanship with European certification.
Verified facts
- Website confirmed live, checked Jun 4, 2026
About
Tomark Aero, based in Prievidza, Slovakia, manufactures the Viper SD-4 and Viper SD-4 RTC light sport aircraft. The Viper SD-4 is a composite, low-wing, side-by-side two-seat aircraft certified to EASA CS-22 and ASTM S-LSA standards. The aircraft is known for its aerobatic capability (up to +6/-4g in the RTC version). Exported to the UK, Germany, Australia, and Czech Republic through an authorized dealer network.
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- 🇸🇰 Slovakia 🇨🇿 Czechia 🇩🇪 Germany 🇬🇧 United Kingdom 🇦🇺 Australia