32 Landing Gear

Question 1

What is displayed at the top of the WHEEL SD page?

Answer 1

Spoilers

Question 2

How many green triangles are needed per gear to confirm locked down?

Answer 2

One (one LGCIU needs to confirm green triangle)

Question 3

What does two amber XX’s mean in place of a green triangle on the WHEEL SD page?

Answer 3

One LGCIU has failed

Question 4

What does an amber X mean in place of an arrow for spoilers?

Answer 4

Spoiler position not valid

Question 5

When does a green arc appear over brake?

Answer 5

When one brake >100degC

Question 6

When does an amber arc appear over brake?

Answer 6

When one brake >300degC

Question 7

How long does AUTO BRK LO/MED/MAX flash for on WHEEL SD page after disengagement?

Answer 7

10 seconds

Question 8

When does N/W STEERING appear in amber on the WHEEL SD page?

Answer 8

System failure, or
Both BSCUs fail, or
Y HYD SYS LO PR, or
A/SKID + N/WHEEL STRNG pb off

Question 9

Maximum brake temperature for take off without any brake fans? With brake fans?

Answer 9

300degC without fans, 150degC with fans

Question 10

When do the fusible plugs melt in the tyre? Why do they do this?

Answer 10

When brakes reach 800degC to prevent tyre burst

Question 11

Maximum speed with landing gear extended? VLE

Answer 11

280kt/M0.67

Question 12

Maximum speed for landing gear extension? VLOe

Answer 12

250kt/M0.60

Question 13

Maximum speed for landing gear retraction? VLOr

Answer 13

220kt/M0.54

Question 14

Maximum tyre speed?

Answer 14

195kts

Question 15

Maximum wiper operating speed?

Answer 15

230kts

Question 16

Maximum window open speed?

Answer 16

200kts

Question 17

Maximum speed with one tyre deflated?

Answer 17

7kts

Question 18

Maximum speed with two tyres deflated (same side)?

Answer 18

3kts