Landing Gear and Brakes

Question 1

What is the meaning of the triangle indications on the ECAM WHEEL page

Answer 1

position and condition of the landing gear as independently detected by each LGCIU

Question 2

What is the difference in status of the forward sets of triangles vs the rear sets?

Answer 2

Forward - active LGCIU
Rear - standby LGCIU

Question 3

What indications will you get when the landing gear is down and locked?

Answer 3

1) Forward triangles on the ECAM WHEEL page will be green ‘

2) Three green triangles on the landing gear indicator panel

3) LDG GEAR DN appear in green on the E/WD

Question 4

What does a red UNLK light on the LDG GEAR panel mean?

Answer 4

a specific gear is NOT being detected as being locked in the selected position

Question 5

What does a red arrow on the Landing Gear Selector Panel mean?

Answer 5

The aircraft is in the landing configuration (below 750ft RA) AND

The Gear IS NOT down and locked

Question 6

How does the GRAVITY GEAR EXTN hand crank work?

Answer 6

1) Lift into position, breaking the security safety wire

2) Rotate clockwise 3 turns into the mechanical stop

Question 7

How is the Brake and Steering Control Unit (BSCU) activated?

Answer 7

place the A/SKID & N/W STRG switch in the ON position

Question 8

When will nose wheel steering be inhibited and the NW STRG DISC message display on the E/WD section and what colors will you get

Answer 8

1) Inhibited when tow control lever on the nose gear strut has been placed in the tow position AND:

2) Green NW STRG DISC message- both engines shut down

3) Amber NW STRG DISC message - at least one engine running

Question 9

What are the controls for nose wheel steering

Answer 9

1) Tillers (steering hand wheels on CA and FO side

2) Rudder Pedals

3) Autopilot during auto land

Question 10

Which hydraulic systems offer Anti Skid braking and under what circumstances

Answer 10

1) Green System - Normal Brakes with Anti Skid
2) Yellow System - Alternate Brakes with Anti Skid

Question 11

if you have a total BSCU failure or failure of both the green and yellow HYD systems is Alternate Braking available? How? Any limitations?

Answer 11

Yes it is available, through the yellow system accumulator but you will not have antiskid available.

Question 12

what does the ACCU-PRESS indicator display, what does the Green Band represent?

Answer 12

Displays the yellow system brake accumulator pressure, the green band represents a full charge

Question 13

What does the BRAKES indicator (pointer) display

Answer 13

Yellow system pressure being applied to the respective brake

Question 14

What do the Green Arcs represent. Will you get Anti skid protection using the Yellow System accumulator for braking?

Answer 14

Green Arcs represent the safe application pressure range when brakes are being manually applied.

No Anti Skid Protection available

Question 15

Are the indications on the ACCU PRESS and BRAKES Indicator associated with normal braking or Green Hyd System?

Answer 15

No

Question 16

Where are brake temp indications found.

Answer 16

ECAM WHEEL PAGE

Question 17

How are brake temp indications depicted?

Answer 17

1) Green Arc over wheel with hottest brake temp over 100 deg C

2) Amber Arc if the brake temp exceeds 300 deg C

Question 18

When do the release indicators (Horizontal Green Lines) appear on the ECAM WHEEL page? What do they mean

Answer 18

1) Temporarily when the LG is lowered to indicate that the individual wheel brake is released and anti skid is armed

2) Re-appear after touchdown along with REL display when anti skid is active

Question 19

What is the minimum ground speed for autobrake activation

Answer 19

72 KTS

Question 20

When is brake pressure application applied with the Autobrake armed?

Answer 20

LO - 4 seconds after grd spoiler deployment

MED - 2 seconds after grd spoiler deployment

MAX - immediately after grd spoiler deployment

Question 21

Is MAX Autobrake approved for landing?

Answer 21

No, only for takeoff (RTO)

Question 22

What does the DECEL (green) indication on the AUTO BRK pb mean

Answer 22

actual deceleration is 80% of the selected rate

Question 23

What are the indications that the parking brake is being applied?

Answer 23

1) PARK BRK appears in the E/WD memo section

2) ACCU-PRESS/ BRAKES indicator displays approx 2000 psi application pressure on the left and right brakes

Question 24

What is the source of the application pressure on the ACCU-PRESS/ BRAKES indicator when the parking brake is set?

Answer 24

Active Yellow System or Yellow System Accumulator