I found out first-hand that the A340-500 and -600 still have the trim backup, and even despite their length, why wouldn't they?
Remember that you still have hydraulics in the situation I described. Only if those would also fail the plane would be (almost) uncontrollable, just like any other Boeing, Fokker or McDoDo that has a powered control system relying solely on hydraulic pressure.
How they solved it on the A380-800, I don't know. But if it can be done on the A346 the A388 probably has it too, as the big bus is in fact shorter, reducing the cable length required. How else do you suggest Airbus will solve the problem of having no pitch control when none of the buses (
) are powered?
