Ok, dumbass question.
Ran autotune on a rig, and completed without any issue. Next, planned a 6 min map mission with 4 legs, at 100m Alt. Mission runs and returns to home point, rig descends from 100m to 50m, beeps, and stops descending. Same results at the finish on two additional flights.
Arducopter v3.3.3
What am I missing? LOL
Thanks!