The rudder didnt " fall off" , it fluttered then flew off. the instsnt flutter caused the vertical fin to turn then break off. The turning of the vertical fin put the plane in an instant knife-edge. This sequence took at best 1 1/2 to 2 seconds. The throtle was off also instantly,thanks to, at the time, over 8 years of flying rc and over 370 turbin flights. Yes. I lost it. Leson learned? Dont under-estimate Speed, no matter how much you love it. BVM has " do not exceed" speeds on all his jet kits. Pay attention, in my book He's The Man.......I wonder how Bob knows what these DNE's are? Ohhhh Well.....Lesons learned......Ray