Hi mono,
I still have two problems:
1) If both systems A and B, are pressurized when we depress the pedals, how the airplane "knows" system B is the master?
I seem to understand the key to this problem lies in the NORMAL/ALTERNATE SHUTTLE VALVES.
But when both systems are pressurized, why the valves open the B pressure and not the A one?
Maybe the whole braking system is set in order to provide, with the same brake pedals deflection, a higher pressure on the B side?
If so, I need a harder push when using ALTERNATE BRAKES to get the same deceleration.
2) On the ALTERNATE BRAKE SYSTEM SCHEMATIC there's no PARKING BRAKE VALVE.
But there must be one in order to set the Parking brake with only sys A available!
Thank you for your time and valuable help.
LEM