if the bird is supposed to be part of a cutScene
(yanno, you call her up & the cam peeks at her takeoff etc.)
then, in addition to what wolf said up there:
If the chopper is to be hovering in the air.....
ya could let her stand on ground w/ engines running, like this:
Do as wolfy said, and simply use
This FlyinHeight 0.3
in the "hold" WP, and
This FlyinHeight 60
when she's supposed to fly towards yer place!
This way it won't take a year before the bird actually takes off and starts to fly.