On Mon, 10 Jan 2005 18:09:48 -0800, "jharper aaatttt cisco dddooottt
com" "jharper aaatttt cisco dddooottt com" wrote:

snip

I wonder how altimeters for airliners work, given
the change that happens at 36152' - or indeed the
U2 altimeter. Must be some interesting stuff inside.

http://www.rockwellcollins.com/ecat/...html?smenu=109

http://www.cas.honeywell.com/ats/products/airdata.cfm

Typically the DADC's are corrected for known issues/errors in the
pitot/static system of the specific type aircraft it is installed in,
as well as the "change"s you've noted.

TC