ICE & RAIN

Question 1

Which part of the airframe is Anti-Iced?

Can the APU be used for airframe ANTI-icing?

Answer 1

• The 3 OUTBOARD leading edge slats on both sides (WAI)
• ENG air intakes (EAI)

NO!

Question 2

Where is the hot air taken from for:

1. EAI
2. WAI

Answer 2

1. HP compressor into the engine nacelle

2. Pneumatic system duct (IP/HP)

Question 3

What happens if there is no electrical control for the:

1. WAI
2. EAI

Answer 3

1. Valves CLOSE

2. Valves default to OPEN

Question 4

How long does the WAI-ground test last?

What happens after the test?

What happens at lift-off and it is still selected ON?

Answer 4

It is opened for 30 sec to check for leaks

Then it closes

Goes ON after lift off (Ground-Air logic)

Question 5

What happens with the N1 / N1 limits when EAI is selected on?

Answer 5

N1 limit is reduced

N1 increases

Question 6

Which probes are not heated on the ground?

Answer 6

TAT probes

Question 7

In the AUTO position, when are probes and windows heated?

Answer 7

In flight or 1 engine running on the ground