Landing Gear

Question 1

The anti retraction latch of the landing gear control lever prevents selecting the landing gear UP when:

Answer 1

At least one gear shock absorber senses weight on wheels.

Question 2

When is the red UNLK indication displayed on the landing gear indication panel?

Answer 2

When the landing gear is not seen as locked in the commanded position or (on ground) the uplock box is not opened.

Question 3

When is the LDG GEAR NOT DN warning indicated?

Answer 3

Any landing gear not seen as down and locked; and
RA <500’; and
Flaps 30; or
At least one PL at FI.

Question 4

When is NWS available on landing?

Answer 4

Nose landing gear locked down; and

Main gear and nose gear shock absorbers compressed.

Question 5

When is antiskid armed?

Answer 5

Above 10kts

Question 6

When will the antiskid locked wheel protection activate?

Answer 6

Speed >23kts

Speed differential of 50% or greater between inboard wheels or outboard wheels.

Question 7

When is the antiskid touchdown protection active?

Answer 7

Braking inhibited at touchdown as long as wheel spin up is <35kts or 5 seconds.

Question 8

In the event of a hydraulic system failure, how many applications of brakes are available with emergency brakes?

Answer 8

At least 6.

Question 9

When does the WHEELS BRK HOT message activate?

Answer 9

Any brake temp >150C