Donald Nelson (USA)

“I am amazed at the flying qualities and the superb craftsmanship of the Viper SD4. It feels like a sports car with great performance on the controls. Very smooth. Simple and dependable with the Rotax engine!”

"The private pilot with over 3k hours"

Michael Böhme (Germany)

I can affirm it´s not just the good look, it´s a very high skill and quality airplane. I can say, the stability and strength of the airplane is strong and the quality in the cabin is unrivalled for an airplane in this price-class.

Ewan Wilson (New Zealand)

Viper consumes just over 12 litres per hour flight! I received feedback from pilots in New Zealand, which is absolutely positive. Emphasize high stability, low fuel consumption and comfort during flight.

Don Lau (Surinam)

The Viper amazes me every time I fly. Its capabilities and stability in flight are over the limits for just an LSA. The Viper SD-4 is very easy to fly and also very safe to fly. I highly recommend this airplane mostly cause of the low maintenance and operation and fuel costs, its stability and of course safety!

Wiliam Harasym (USA)

Very beautiful aircraft, wish I had one. Keep up great work!

Radek Ligurský (Czech Republic)

After my pleasant and personal experience I would like to recommend the flying on Viper to anyone who wants to enjoy flying, who wants to fly comfortably, enjoying modern amenities and gorgeous plane design. For travel, recreation and sport flying is Viper SD-4 an ideal solution, that appreciate the passionate and demanding pilots and fans of modern flying.

Lennart Arvidson (Sweden)

This a great aircraft. Good design and very well built. Perfect for schooling and for clubs. I'm a proud Viper owner and importer for TomarkAero.

Ján Pjatak (USA)

An LSA with headroom and plenty of room for two full-sized adults. The Viper was designed for the American LSA market and to meet the FAA requirements. The Viper has the widest cockpit in its class. I weigh 225 pounds and have big bones and when I am flying with another guy bigger than me we are comfortable. There is no shoulder touching and plenty of headroom because of the bubble canopy. You can fly up to 400 miles on standard tanks — that’s about four hours. That isn’t a problem with the Viper, that you get a stiff neck after a couple of hours. There is also an option for bigger tanks that allow you to fly up to six hours. We tested it by dropping the airplane from 15 feet up. It also has a glider hook on it and is certificated to be a tow airplane, so it could be used for that.

Miroslav Rakušan(Czech Republic)

The old adage says: As the aircraft looks like, as well as flies. In this case of Viper 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.

Roy Visona (Italy)

Summary of my review: Viper SD4 is beautiful and elegant aircraft, which is great also in a case of long flights and at different speeds. Viper offers a combination of modern technology and entertainment for pilots