23. ANTI ICE Panel

Question 1

When do you use engine anti‐ice?

Answer 1

o When OAT (Ground) / TAT (Flight) 10° C or below with visible moisture present
o Prior to and during descent in icing conditions (including temperatures below –40° C SAT)

Question 2

What is the exception to the above rule?

Answer 2

During climb and cruise when the temperature is below –40° C SAT

Question 3

What does a FAULT light in the ENG ANTI ICE pb indicate?

Answer 3

Switch/anti‐ice valve disagreement

Question 4

With ENG ANTI ICE ON what indications will you see on the pb?

Answer 4

Blue ENG ANTI ICE light ON

Question 5

Can you use the wing anti‐ice on the ground?

Answer 5

No

Question 6

What happens if you turn the switch on the ground?

Answer 6

The wing anti‐icing valves will open for a 30 second test

Question 7

What part of the wing is heated?

Answer 7

Outboard 3 slats

Question 8

Can you use the APU bleed for wing anti‐ice?

Answer 8

No

Question 9

What does the amber FAULT light in the WING ANTI ICE pb indicate?

Answer 9

o Position of the anti‐icing control valve is not in the required position.
o Low pressure is detected.

Question 10

In what position do the Wing and Engine Anti‐Ice valves fail if electrical power is lost?

Answer 10

o Wing – valves CLOSE

o Engine – valves OPEN