Can a creature with wings choose to fall to get down faster?

A dragon flies at 4000 feet of altitude and needs to get to ground level as fast as possible.

With a double-move and a fly speed of 200, it can only move 400 feet per round.

But, can it choose to stop flapping its wings and fall (I would assume maybe 500 or 1000 feet per round), and then use the Fly skill to negate the 20d6 of falling damage when it hits the ground?