Why do we need a Boeing test pilot?
Well, I find it reassuring to keep one around, sort of like Linus' blanket!
No seriously, I don't think we've answered all of his question, but I'm probably missing something: why do Boeing recommend increasing
VMCG by 5 kts in this case, considering that the rudders are powered by two hydraulic systems each?
It should have nothing to do with nosewheel steering (as VMCG does not take NSW into account) nor with aileron/spoiler authority (as we're still on the ground), so what's going on?
My guess is still that with only one remaining hydraulic system on one of the rudders, full deflection on that rudder is no longer assured, but does anyone know for sure?
MD
