Ta mate. Not quite what I was after though. FCOM 3 ref is to altimeter tolerances - and I can't see a FCOM 1.34.25 ? My copy goes from 34.20 straight to 34.30.
My query is more to do with the incorrect setting of the altimeter on one side or the other - QNH - and what threshold does this invoke an ECAM message.
When I am next on the aircraft I can have a play - but that isn't until Sunday and I am very impatient
