On Feb 13, 9:45*am, (Richard Casady)
wrote:
On Thu, 12 Feb 2009 14:11:10 -0400, "Don White"

wrote:
I'm sure the pilot had perfect visibility in the rain, fog and snow,
he was just scared....right, dummy?

The pilot is the necessary backup for the autopilot, which can land
the plane, and which does not use visible light and does not need
visibility. Rain and fog do not affect it. The pilot might have taken
the risk had there been a medical emergency or something.

Casady

An autopilot system can't make decisions based on deteriorating
weather conditions. A pilot can, and therefore did.