Thanks FDetent,
In the event of a eng 1+2 Bleed failure, and the ECAM
PR EXCESS CAB ALT annunciation, and a Red cab alt +9500, reset the bleed(s), start the APU.
Declare a mayday as it is a dual bleed, failure, does your company have a different procedure for a emergency descent or a rapid descent ? A rapid descent with a PAN PAN may also work as well?
In this scenario, you are over the Alps, so you choose, Fl 180, as per the apu bleed limitations, why not use 1 pack only ( 22,500 feet ) until you descent to
15000 feet, where you check the terrain MORA, ETC. and can use 2 packs?
Also We know it is not a structural failure, a bleed failure(s) in this scenario, why not increase descent speed in the descent to 300 knots or as required ?
Cheers