Hello,
We built a fixed wing UAV with Pixhawk 4. It had done successful flights so far. But last two missions did not make sense. The UAV was handlaunched, flew to waypoints then went for landing pattern. In landing pattern it enters loiter and then keeps circling in loiter and descending and landing there instead of entering the landing approach and coming in to landing area properly. So it basically just gets stuck in loiter and descends while loitering. We had crashed twice this way. Any idea what could be going wrong and how to fix it?
Any help would be greated appreciated.
Thanks.