The plane: a foamy mxs
the cause: unknown
It dived out of a turn, into a spin, and into the ground. It had been diving out of turns for the entire flight. however, It was not divng on the first flight. What could cause this?
Continental drift my friend, continental drift....
Maybe structural damage - partially cracked fuselage or wing perhaps -it is not allways visable until stress is put on it. But the battery is a good call.