Weather Radar

Question 1

What is the size of the weather radar antenna?

Answer 1

12”

Question 2

What is the warm up time for the weather radar?

Answer 2

40-100 seconds

Question 3

If the radar is not on STBY on the ground, what precautions should be taken?

Answer 3

Point nose away from metal objects within 100ft and tilt fully up

Avoid use when refuelling or around other a/c being refuelled

Avoid if anybody standing within 270° of the nose cone

Question 4

FSBY forces standby, how can this be done?

Answer 4

Press STAB button 4 times in 3 seconds

Question 5

Should you avoid blue areas?

Answer 5

Yes

Question 6

How many miles should you avoid shadows by?

Answer 6

20nm

Question 7

What does REACT stand for?

Answer 7

Rain Echo Attenuation Compensation Technique

Question 8

How is the antenna stabilised?

Answer 8

Stabilises in Pitch and Roll by using AHRS attitude info

Question 9

SECT (sector azimuth control button) changes the sweep between what two values?

Answer 9

12 sweeps / min ( 120°)

24 sweeps / min (60°)

Question 10

What is the range of the tilt?

Answer 10

0 to +/-15°

Question 11

What mode can Wx only be displayed in?

Answer 11

Map

Question 12

What does blue represent on the screen?

Answer 12

Gain has reached the maximum value

Question 13

Name the 5 things that affect the degradation of wx radar performance

Answer 13

Water film on the radome
Grease on the radome
Cracks on the radome
Excessive paint application
Holes from lightning strikes

Question 14

In map mode, the range value of the arc denotes which range?

Answer 14

Half of the selected range