AI helicopter pilots, when ordered to land anywhere, will always lose speed by climbing, sometimes to three times it's original flyInHeight. There are several reasons why this is problematic:

1. Climbing too high in a chopper exposes the chopper to enemy fire
2. It's unrealistic for a "real" helicopter pilot to lose speed like this. Usually, they "bleed" out speed by leveling out early, pushing the collective down to avoid climbing, and curving in on the landing site

Since AI pilots always refuse to land once they sighted enemies, this behavior makes creating chopper insertions extremely frustrating, especially since even disabling targeting and even FSM for the pilot does not seem to have any impact on landing once an enemy is spotted. {F22648}