Parking Brake system
To answer the already above posted (which is in terms totally correct) to the end:
1. all Hydraulic in a closed circuit, nothing like a pump or so to pressurize.
2. no annunciations for a set park brake
3. the sytem pressure is only held by a shuttle valve, so the brake system on the
main wheels (I don`t know any aircraft where the nose wheel is also braked)
is fully engaged.
Regards BG140