3 - Anti-Ice/Rain

Question 1

When nacelle anti-icing is commanded on, ________ operate continuously

Answer 1

engine igniters

Question 2

Nacelle and wing anti-icing is provided by ________ to the nacelle inlets and to the wing leading edges

Answer 2

engine bleed air

Question 3

When nacelle anti-icing is commanded on with the engine bleed valve closed, the HP valve remains closed. Bleed air is supplied by _____

Answer 3

IP bleed

Question 4

What causes the WINDOW HEAT Inoperative (INOP) Lights to illuminate? (3)

Answer 4

• The switch is off, or
• an overheat has occurred, or
• a system fault has occurred

Question 5

Bleed air is not available for nacelle anti-icing if the engine bleed PRV is closed because of? (3)

Answer 5

• a prior or present bleed air overheat
• the start valve is not closed
• the engine bleed HP valve is failed open

Question 6

Wing anti-icing is ineffective when __________

Answer 6

the leading edge flaps are not retracted

Question 7

The forward windshields have _____ protection on the exterior surfaces, and ____ heating on the interior surfaces.

Answer 7

anti-icing

anti-fogging

Question 8

The side windows have controlled _______ heating on the interior surfaces when ________

Answer 8

anti-fogging

AC electrical system is powered

Question 9

The window heat switches control heating for _______

Answer 9

the forward windows only

Question 10

__ pitot-static probes and __ angle of attack probes are electrically heated for anti-icing protection when ________.

Answer 10

4

2

any engine is operating

Question 11

__ total air temperature probes are electrically heated for anti-icing protection ______

Answer 11

2

in flight

Question 12

Is Nacelle Anti-ice available with Engine Bleed Switch OFF?

Answer 12

Yes

PRV opens when Nacelle Anti-ice switch ON

(unless PRV closed by:
• prior or present bleed air overheat, or
• start valve not closed, or
• HP bleed valve failed open