Bobrun
Thanks for your input. You are of course referring to the Angle if Incidence (aka riggers angle) not being the same as the aircraft axis.
Its been some years now since I flew the A340 and did actually compare the AOA from the MCDU with the PA in the cruise and bearing in mind the errors in measured values which Airbus state for the Angle of Attack Vanes but I don`t remember the two values being hugely different. Since AOA is not displayed directly I thought that I was offering INDIGO a `quick and dirty` method of finding the AOA - for what ever reasons he needs this!!
By the way, the light aircraft that I have built has a wing angle of incidence of only 2 degrees and I would be most surprised if the Airbus value is anything like that - however I only fly them . I do not build them!