I have a Trex 450 SA.
As the heli leaves the ground the head stays pointing in one direction and it stays level.
The heli goes left, stays level and pointing straaight. Just like straffing in a video game.
No yaw, no roll, not pitch - just left.
Eventually the heli makes a circle.
I can't figure out how to correct this. I have a gyro but not a heading lock.
Thanks
Doug