On Mon, 6 Jun 2005 10:13:33 -0700, "Darrell S"
wrote:


Many airliners use FMS (Flight Management System) and no movement is allowed
while the system is "initializing". They might not have noticed that

I thought it was the IRU or INS that required no movement? If the
position is fed to the FMS from a GPS receiver there's no problem with
movement per-se, it just takes a little longer to finish acquisition.

And it usually would be difficult not to notice the system hadn't
finished aligning - are these things part-glass? I don't know of a
glass system that doesn't X or blank out at least the AI and nav
display whenever the system doesn't have alignment. Don't they also
have a caution "IRU x ALIGN" message on the EICAS?