Anti Ice/Rain ICE

Question 1

Which areas on the aircraft are provided ice protection?

Answer 1

Wings outboard 3 slats (slats 3, 4, 5)

Engines nacelle leading edges

Question 2

Conditions that require wing anti ice

Answer 2

Inflight: indication of ice on the airframe seen on the Structural Ice Indicator between the windshields OR
On the windshield wipers

Question 3

The conditions that require the use of engine anti ice

Answer 3

If icing conditions exist or are anticipated both on the ground and in flight

(Icing conditions exist at 10* C or below and visible moisture)

Question 4

Must an engine bleed valve be open to use its respective engine anti ice system?

Answer 4

No

It is plumbed independently from the high pressure compressor

Question 5

What is the caution regarding the use of wing anti ice with slats extended?

Answer 5

Extended flights into icing should be avoided due to reduced wing anti ice capability with the slats extended

Question 6

What are the indications when anti ice is selected ON?

Pic

Answer 6

1. ON - (blue) illuminates on respective ENG 1/2 pb

2. ENG A.ICE and IGNITION - (green) appears on memo section

Question 7

What are the indications of wing anti ice being ON?

Pic

Answer 7

1. ON - (blue) illuminates on the wing pb
2. WING A.ICE - (green) on the E/WD memo section
3. ANTI ICE - (white) on each side of the BLEED page along with green arrows on each side when the respective anti ice valve has opened

Question 8

What’s the meaning of the FAULT (Amber) light on the WING and ENG 1/2 ANTI ICE pbs?
(Pic)

Answer 8

1. Appears momentarily during valve transition
2. Represents disagreement between selected position and actual valve position
3. For the WING pb - indicates low bleed air pressure is detected

Question 9

What’s the operation of the Probe and Window heating system?

Pic

Answer 9

1. On the ground - with at least one eng running, ALL flight deck windows/windshields, pitot tubes, static ports and AOA vanes are auto heated electrically at low level
2. The TAT probes are not heated on the ground
3. In the air - heat levels are increased and the TAT probes are heated

Question 10

What is the operation of the Probe and Window heating system with the PROBE/WINDOW HEAT pb selected ON (blue)?
(Pic)

Answer 10

1. On ground - with no engines operating, ALL flight deck windows/windshields, pitot tubes, static ports and AOA vanes are heated
2. The TAT probes are NOT heated on the ground
3. After first engine start - system reverts to programmed auto logic but the ON light remains illuminated unless manually selected back to AUTO (light out)