Known issue: Prevent propeller to fly away

To avoid propeller to fly away, you should check are they screwed properly.

To check that the propellers are well screwed, attach the middle stand to your WingtraOne and put your WingtraOne on a firm horizontal surface solid surface. Please make sure that your WingtraOne is not turned on. 

Check with both hands that the propellers rotate smoothly and that there is no gap between the propellers and the nut. 

To secure the propellers, use the small wrench that comes inside the Wingtra Pilot box. Take the wrench and thread it through two small holes on the nut. Hold the motor with one hand while turning the wrench with the other hand. Rotate de nut clockwise on the motor with the green dot and rotate the nut counter-clockwise on the motor with the red dot

Attach the propellers so they won’t fly off during the flight with your WingtraOne.