TomarkAero
Tomark Viper SD4
Slovak metal trainer, now with an RTC badge.
View 2 photosThe Viper SD4 is TomarkAero's all-metal two-seater, used as ULM, LSA and EASA-certified RTC trainer. Stable, straightforward, and aimed at schools that want aluminium they can maintain.
Key figures
Max speed
225 km/h
Range
1,000 km
Engine
Rotax 912 ULS
Seats
2
Dimensions
Top view
Wingspan
8.8 m
Side view
Length
6.4 m
Height
2.3 m
Performance
Cruise
200 km/h
Max speed
225 km/h
Vne
243 km/h
Stall
75 km/h
Stall speed (clean)
84 km/h
Climb
5.2 m/s
Airframe
- Category
- LSA
- Wing
- Low wing
- Seats
- 2
- Variant
- Viper SD4
- First flight
- 2007
- Construction
- All-metal
- Materials
- Aluminium semi-monocoque
- Propeller
- Woodcomp or Duc
- Status
- in production
General
- Propeller
Composite ground-adjustable, typical Rotax installation
Estimated · Manufacturer brochure / published figures
- Fuel
MOGAS 95 / 100LL
Likely · Manufacturer brochure / published figures
- Best glide ratio
11:1
Estimated · Manufacturer brochure / published figures
Weights
- Empty weight
325 kg
Likely · TomarkAero Viper SD4
- Max takeoff weight
600 kg
Likely · TomarkAero Viper SD4
- Useful load
275 kg
Estimated · Manufacturer brochure / published figures
- Fuel capacity
100 L
Likely · TomarkAero Viper SD4
Powerplant
- Propeller
Composite ground-adjustable, typical Rotax installation
Estimated · Manufacturer brochure / published figures
- Fuel
MOGAS 95 / 100LL
Likely · Manufacturer brochure / published figures