The plane was built exactly according to the instructions. JR digital servos, FPE 2.4. It was the 3rd flight on the airframe, the first two were flawless. The plane was easy to fly so I began to ring it out a little, a couple of spins, knife edge, snaps on the verticle up line. running a series of rolls about 300 feet from us the plane went nuts. At first I thought it was radio faliure but I had throttle control, then I realized one half of the elevator/stab was flapping in the breeze behind the plane. The plane went another 300 feet before it dissapeared behind a tree line, it went silent about 10 seconds later. I cant give any more info than this as we havent found the plane yet, it went into a very overgrown marsh, we did our best to get through it but between the 6 foot weeds and the 16" of mud we couldn't find it. Check you tails carefully {the one on the plane guys}.