Well a fellow club member totaled his extra or edge today( not sure whitch) He went to fly and had no elevator. Earlier in the day it was fine. Several people tried to find the problem. A change in expo seemed to cure the problem. After several on off, shaking, trying to make the problem come back everything seemed ok, so he decided to fly.

After only a couple of minutes the elevator lost response and the plane came straight down burying the spinner a good 6 to 8 inches in the clay. What few parts that were salvagable were, then the rest was taken to the parking lot, the remainder of the fuel tank was emptied over it and lit on fire.

So what happened? The RX/TX were a JR 6102 not very old. any ideas.