Anti Ice And Rain

Question 1

Describe what happens when NAI commanded ON?

Answer 1

NAI valves open
Selected igniters operate continuously
Engine PRV opens when NAI valve open

Question 2

-8 EICAS BLD LOW TEMP indicates?

Answer 2

Engine bleed air temperature too low for sufficient wing anti icing

Question 3

Does NAI Auto function work on the ground?

Answer 3

No: only in flight

Question 4

How many ice detection probes are there? And where are they located?

Answer 4

Two probes; located on the forward fuselage

Question 5

How many AoA probes are there? And when are they heated?

Answer 5

2 probes heated when any engine is operating

Question 6

How many pitot static probes are there? And when are they heated?

Answer 6

4 probes: electrically heated whenever any engine is operating

Question 7

Window Heat ON switches provide heating for which FD windows?

Answer 7

FWD left and right windshields only

Question 8

Indications on -400 for Nacelle anti ice and Wing anti ice?

Answer 8

NAI and WAI

Question 9

-8indications for Engine anti ice and Wing anti ice?

Answer 9

EAI and WAI

Question 10

Is wing anti ice effective with LE flaps extended?

Answer 10

No: only effective with LE flaps retracted