I have been flying my quadcopter with mission planner in Korea and happy about its auto navigation flying.
However, 1 out of 7 or 8 attempts the mission was failed due to lost gps signal in the middle of waypoints.
As a robotics engineer myself, losing gps signal is acceptable but what I can't understand is the behavior of the copter as it start moving faster to somewhere so that I have to switch to rc control mode.
Sometimes I was confused with its orientation and almost crash the copter.
If there is an option preventing this to happen or threads about this issue, please let me know.
Otherwise I think the firmware must be updated to fix this problem.