1.BSCU with ADIRU data control breaking systems.
Alternate braking is automatically obtained :
- in case of green pressure loss,
- if a failure occurs on the normal braking system during operation or BSCU test.
Also you can switch manual to Alternate by set A/SKID & N/W STRG Switch to Off.
When on Alternate and Yellow Eng pump is inop the accumulator only supplies the brakes.
With the accumulator pressure only, a maximum of 7 full brake pedal applications can be performed.