On Wed, 29 Dec 2004 at 08:10:51 in message
. com, Ramapriya
wrote:
I remember seeing a button on the A320 flight deck for disconnection of
the nosewheel steering control. I also remember the cap'n saying that
that's used during the push-back of the aircraft. He mentioned some
reason for that but I don't recall what; possibly something to do with
the hydraulics not getting accidentally triggered off or something like
that.

Isn't this simply because during 'push back' the towing bar is locked
to the nose wheel so that the tug can turn the aircraft as is pushes it
back?

Otherwise the nose wheel steering could be damaged by the tow.
--
David CL Francis