Landing Gear & Brakes

Question 0

When would the alternate brake system engage ? How?

Answer 0

If the R hydraulic system is low - the alternate brake system automatically takes over through the C Hydraulic system(767) (L) 757

Question 1

How many brake systems are there ? What are they called?

Answer 1

3
Normal
Alternate
Reserve

Question 2

What happens when you press the RESERVE BRAKES and STRG switch (767)?

RESERVE BRAKES (757)?

Answer 2

Provides hydraulic fluid to

C1 elect pump (767). pump pressure is exclusively to alt brake & nose wheel steering

R elect pump (757) - pump pressure is exclusively to Normal brake system

Question 3

When would you push the RESERVE BRAKES (757)

And the RESERVE BKS& STRG switch (767)

Answer 3

The QRH would tell you to push it when BRAKE SOURCE light is on

Question 4

When does AUTOBRAKING start?

Answer 4

Wheels spin up and thrust levers at idle

Question 5

When will AUTOBRAKE disarm?

Answer 5

Pedal braking 
Either thrust lever advanced after landing
Speedbrake lever moved from full up 
DISARM or OFF position selected
AUTOBRAKE fault
Anti skid fault

Question 6

Which hydraulic system provides pressure to parking brake accumulator?

Answer 6

Right

Question 7

How does the AIR/GROUND sensing system work ?

Answer 7

Tilt sensors on main wheels - compression sensor on nose wheel

Question 8

Do you have any braking left if BRAKE SOURCE light is on after selecting RESERVE BKS & STRG (767) or RESERVE BRAKES (757)switch ?

Answer 8

Yes - accumulator pressure