Landing Gear/Steering

Question 1

If hydraulic system 1 fails is there a backup for body gear steering?

Answer 1

No

Question 2

When would we do an alternate gear extension?

How does the alternate gear extension work?

Answer 2

No pressure in hyd 1 or 4

Or Gear disagree (some up, some down)

Electrical motors remove up locks allow gear to free fall.

Question 3

Which system powers the normal brakes?

Which systems back it up?

Will the accumulator be able to stop the airplane?

Answer 3

System 4 powers normal brakes

Systems 1&2 are backups

Accumulator cannot stop plane

Question 4

With alternate ANTISKID, what wheel pairs are paired together?

Answer 4

Front and back of each truck(tandem)

Question 5

What is a strong caution to remember with the parking brake?

Answer 5

If the accumulator pressure is in or near the amber band, the PARKING BRAKE SET indication still shows in the EICAS but they brake is NOT set!!!!!

Question 6

When will the BRAKE SOURCE light illuminate on the Captains panel?

Answer 6

When you lose pressure on systems 1,2&4.

At that time, you can only use accumulator pressure to set the brakes.

Question 7

When do AUTOBRAKES become avaualable on takeoff?

Answer 7

85 kts

Question 8

Whenever ANTISKID OR ANTISKID OFF is displayed, what other braking system is inop?

Answer 8

AUTOBRAKES

Question 9

BRAKE LIMITER

Answer 9

2 or more brake torque limiters fail on a truck

Heavy braking could exceed gear design limit.

It can also mean park brake was released and park brake valve failed to open fully.

Question 10

When must you use auto brakes 3 or 4 for landing?

Answer 10

Wet or slippery

3/4 sm or 4000RVR