biggest weather problem during the late fall and for most
of the migration is moisture. If the temperature is cold, the
moisture produces frost.
is frost on the wings a problem the pilots must solve? A
wing requires a smooth flow of air over the top surface to produce
lift. Frost makes the wing surface rough.
This breaks up that smooth air flow, destroying the lift. The thicker
the layer of frost,
can generate and the faster we must fly to stay airborne. It only
takes a few crystals before we are too fast to lead birds, and
only a thin layer before the airplane won’t fly at all.