B757-200 Brakes/RAT
On the B757-200 if the normal brakes fail and the alternate brakes work correctly what indications does the pilot get?
Is it a status message and if so when does it come up (immediately or after landing) and what does it say? ]
Second questions is a bit long winded (so stick with me) If both engines fail the rat deploys to power the centre system flight controls-why? The left and right systems both have electric pumps and both the centre pumps are electric so if the APU is running why can't they power the flight controls.
I appreciate that there is a degree of load shedding when engines fail but in that case if the left and right hydraulic systems fail and then either engine fails the RAT would be required.