Hi Smilin_Ed
Originally Posted by
Smilin_Ed
AZR:
Except, in this case, they didn't have unrestricted control. The flight control system kept changing the pitch trim. While this was result of an inexplicable nose-up command on the side stick, the pilots apparently didn't notice it. As I've said several times before, when the system gives up, it needs to turn off autotrim along with the autopilot.
I must disagree with your first sentence. If the auto-trim followed the crew's orders (via the sidestick) then the crew
had unrestricted control.
Perhaps you interpreted "unrestricted" as "full manual" ? That's not what I meant. For me "unrestricted" means just that : the planes follows the crew's inputs, and the computers don't prevent manoeuvers because it "thinks" they're of no good.
Maybe a full manual reversion (direct law, no auto-trim, as you promote it) is easier to understand. But IIRC, on the A320 which crashed near Perpignan, the trim was manual (only) ; the crew didn't notice it either, and the plane crashed.
-----------
@ DozyWannabe (post #406) :
Sir.