De Havilland Canada DHC6 Twin Otter Ian (Yves) Tolosa from flyable model by Syd Adams Models/DHT.ac select Prop_Blur_L velocities/true-airspeed-kt 25 select Prop_Blur_R velocities/true-airspeed-kt 25 spin Prop_L velocities/true-airspeed-kt 10 -2.73651 -2.857 2.83788 1.000 0.000 0.000 spin Prop_R velocities/true-airspeed-kt 10 -2.73651 2.857 2.83788 1.000 0.000 0.000