Dozy:
In that case, all the ADIs (powered by AHRS) were functioning perfectly, and the relief F/O repeatedly called out "ADI!" on the way down, pointing out that the aircraft was in an extreme nose-high attitude (the other F/O, who had a working ASI repeatedly called out that they were stalling) - all the way down to the ocean.
The pilot in that case, as I've said before - no low-hour newbie, but an experienced ex-Air Force jockey appeared to be so overwhelmed that he failed to check the ADI in front of him that was telling him he was nose-high, even as his F/O's were emphatically telling him what to look at.
The human factors element of this mishap seems an apt parallel to what AF 447's PF might have been experiencing.
@Murphy:
Yes, of course, sorry I left that out. As I noted earlier, choosing what piece of "real estate" in the display area would house an AoA gage requires careful consideration, and some ergonomic and "scan efficiency" study before a decision is taken.