I am using Pixhawk on a quadcopter. I had gone over all the wiki's about how to set up RTL. Flying in stabilize mode the other day to test RTL, I toggled the switch to RTL, and the quad just started to descend as if all motors had stopped working. I had to toggled the switch back to manual to gain control of the quad. Did I miss to set up any other advanced parameter?
Thanks for any feedback about this issue.
Sounds like the quad was close to the launch point. Try flying farther away..
You may have set the RTL altitude to be lower than the altitude you were at.
If you don't have GPS lock, RTL will land.