ADIRS/IR Switching
My background is the A320 series, but believe the A330 is similar! I have noticed that some of the older aircraft I fly gives you the ability to switch off EITHER the Air Data or Inertial Reference feed to the respective ADIRS.
However, our latest aircraft just has the one switch- is this particular series of the A330 similar? thus would switching of the ADR also depower the IR reference also?