GPS Failure on Drone—-Smashed gimbal–Tali H500 GPS FAILURE02:10

The Tali H500 GPS had 9 satellites registering by 4 blue led blinks at liftoff. When I switched to GPS HOLD, the aircraft dropped altitude like a stone, ultimately crashing directly on the gimbal and unprotected gopro hero 4 black…….. Remarkably, the gopro survived intact. The gimbal did NOT survive…