Originally Posted by OK465 #1371
The center piece of this FPV discussion is whether you can have a true, fully inertial FPV, without the requirement for air data inputs, or not.
[...]
You can fail 2 ADR's on a 330 and still have an FPV, but not 3 ADR's, it's not a matter of being reliable or not, it is just flat taken away.
(bolds are mine)
Yes, as Gums showed us, with air data failure, inertial reference would have been enough to save the lifes.
It also concerns immediate corrections of the A330 software.
But modifications need sometimes more difficulties that seeing things "with a fresh eye" (=>HUD
G.KLOPFSTEIN).
A more general problem emerges here : Who is responsible of the flight, the Captain, or the Chief engineer, or the automation analyst, or the manufacturer ?
In AF447 flight that may concern the Court...