Ice & Rain

Question 1

Which aircraft surfaces are electrically heated?

Answer 1

• Cockpit windows
• Probes
• Waste water drain masts

Question 2

Are the static ports heated?

Answer 2

Yes

Question 3

Can the wing anti-ice be activated on the ground?

Answer 3

Only for a 30 second valve test after which it will close.

Question 4

How many wing anti-ice valves are there?

Answer 4

2.

One in each wing

Question 5

When will the wing anti-ice valve automatically close?

Answer 5

• Bleed leak

- Power failure

Question 6

What is the significance of a wing anti-ice FAULT light?

Answer 6

• Low bleed pressure

- Valve disagree

Question 7

Which bleed supply is used for the nacelle pneumatic anti-ice?

Answer 7

Independent HP compressor bleed

Question 8

What is the effect on N2 with the selection of engine- or wing anti-ice?

Answer 8

Increased minimum idle

Question 9

What is the significance of a engine anti-ice FAULT light?

Answer 9

Valve disagree

Question 10

When will the probes be heated with the probe/window heat switch in AUTO?

Answer 10

• On the ground with one engine running

- In flight

Question 11

Will the TAT probes be heated on the ground with the probe/window heat switch ON?

Answer 11

No. TAT probes never heated on the ground

Question 12

Which slats are pneumatically anti-iced?

Answer 12

3,4,5

Question 13

When are the windows heated with the probe window heat switch in AUTO?

Answer 13

• On the ground with one engine running

- In flight

Question 14

What is the effect of loss of one Window Heat Computer?

Answer 14

Heating to that side lost. No redundancy.