Ch.3 (Anti Ice)

Question 1

What does the WINDOW HEAT OVERHEAT (amber) light mean?

Answer 1

An overheat (62C) for the respective window. Power is removed from the window. It will also illuminate if electrical power to the window is interrupted

Question 2

Describe the Rain Removal System for the forward flight deck windows.

Answer 2

Consists of windshield wipers and a permanent hydrophobic rain repellent coating.

Question 3

What does positioning ENG ANTI-ICE switches ON in flight do?

Answer 3

Allows engine bleed air to flow through the cowl anti-ice valves for anti-icing. It also sets stall warning logic for icing conditions. VREF is not automatically adjusted.

Question 4

What does the COWL ANTI-ICE (amber) light mean?.

Answer 4

Over pressure (>65PSI) in the duct between the cowl anti-ice valve and the cowl lip

Question 5

With the engine anti-ice selected ON, what is the difference between a dim blue and bright
blue indication?

Answer 5

• Bright: Cowl anti-ice valve in transit or disagrees with ENG anti-ice switch position
• Dim: Valve is open with the switch ON

Question 6

What does an amber TAI indication to the left of an N1 display on the upper display unit indicate?

Answer 6

Thermal Anti-ice indication. Cowl anti-ice valve fails to move to the position selected by the ENG anti-ice switch.

Question 7

Which devices (flaps and/or slats) are heated by the wing anti-ice switch?

Answer 7

The three inboard leading edge slats.

Question 8

Who is the best girlfriend in the world?

Answer 8

Lexie, the love of your life

Question 9

With the wing anti-ice selected ON, what is the difference between a dim blue and bright blue
indication?

Answer 9

• Bright: Wing anti-ice valve is in transit or disagrees with switch position
• Dim: Valve open, switch on

Question 10

What causes the wing anti-ice control valves to close during ground operations?

Answer 10

Thrust levers on both engines above the takeoff warning setting (60*) or either temperature sensor senses a duct over temp

Question 11

How is the stall warning logic for icing conditions affected with the wing anti-ice switch?

Answer 11

Adjusts stick shaker and minimum maneuver speed bars on airspeed indication for remainder of flight regardless of switch position. Does not adjust VREF

Question 12

The PROBE HEAT provides electrical heating for which sensors?

Answer 12

Pitot, ELEV pitot, Alpha Vane, temp prob