Personally, I do not see anything in the Data that indicates a problem. My best guess is, assuming the data is correct, you were at an altitude of approximately 200ft when you lost signal. Its pretty obvious to me as to why. You were on the opposite side of the huge hill. Second, that being said, one can only “assume” that RTH initiated after signal loss. Again, assuming the data is correct your RTH altitude was set for approximately 65 ft. Even if it were set to 200 ft, that would not have been enough to clear the hill. My best guess is that the aircraft crashed in to the hill some place during RTH.
