So not too long ago I was flying one of my other quadcopters and in mid-flight one of the motors seized and the copter spiraled out of control while dropping like a stone. When I fly my Phantom, I'm usually hundreds of feet in the air and if something like that happened, it would most assuredly disintegrate upon impact with the ground. Is there a recommended flight-time to replace the motors on the Phantom? If so, I suppose I can tally up all my flight-times from DJI GO and see if I'm due for a swap. Have any of you ever replaced a motor on the Phantom before?