So I'm a newbie Phantom 2 Vision pilot......took it up for the second time today, in a large soccer field with no obstructions. First flight went well...hovered perfectly....no issues. This time...everything starts out great...I eventually get it up to 250ft....life is good. I start to slowly bring it back down.....and by the time I'm 30 or 40ft off the ground, it starts flying in a large circle around me. I haven't touched the stick, but to bring it down. Prior to this, it was flying stable as can be. From reading the boards, it seems like maybe a compass miscalibration? I did calibrate the compass inside in my condo.....then flew it in a large open field. Would this cause it fly in such a circular pattern randomly? It also seemed to be off by about 40ft...as when I landed it, it said it was at 38ft altitude. Any advice is much appreciated.
Paul
Paul