Phantom 3 Professional crashed vertical down
I was flying with strong GPS signals in wide open grassland with no trees, building & towers. Within 7 minutes of flight, the Phantom 3 started to spun 360 degree and with no control it crashed vertically down. The crash resulted to bad damage on the shell body, Gimble arm broke with camera ( although camera looks fine), landing gear crack and props got destroyed. The firmware V 1.2.6 was fully updated, compass calliberation, and home point was done as per routine procedure. Still, it crashed.
Can somebody advise me whether this is a manufacturing defect or Pilot error? Any idea is there a vendor who can repair?