Twice now it's happened. Coming out of a loop and after achieving a level flight attitude, my hawk continues to decend at about a 45 deg. until the ground stops it!!! Collective full and the rotor rpm seems to be ok. I mean this thing continues to decend from 100ft. I'm running a OS 37, in normal flight it has plenty of power and climbs very well in a vertical accent.

Wondering if the blades are stalled? Full size heli's can get into a situation when decending with power on, where the blades are on the verge of stalling and the pitch in the rotor must be reduced to stop the decent. Just can't bring myself to reduce the pitch when the thing is heading for the ground!!! $75 in parts....