ANTI-ICE, RAIN

Question 1

Which Flight Deck windows are heated?

Answer 1

Windows 1 and 2.
- Note label on switches.

Question 2

What happens if an overheat condition is detected in windows L1/R1 or L2/R2?

Answer 2

An overheat will automatically remove power from
the window heat system and illuminate the OVERHEAT light for the associated window.
The light remains illuminated until the window has cooled; however, the system
must be manually reset by resetting the WINDOW HEAT switch OFF, then ON.

Question 3

The Engine Anti-Ice System uses engine bleed air to prevent ice formation on which parts of the engine?

Answer 3

• Engine Cowl Lip.
  o 4th and 10th stage
  bleed air.
• Core anti-ice is automatically controlled by the EEC with no Flight Crew input or indication.

Question 4

What does a green TAI indicate above the N1 indicator?

Answer 4

Green when the switch is on and the Anti-Ice valve is open.

Question 5

What does an amber TAI indicate above the N1 indicator?

Answer 5

Amber when the Cowl Anti-Ice Valve fails to move the commanded position. Valve and switch position disagree for more than 8 seconds.

Question 6

What causes the ENG ANTI-ICE light to illuminate?

Answer 6

Indicates that the associated cowl TAI has been inhibited due to a system failure or engine core anti-ice valve has failed in the closed position.

Question 7

What causes the COWL ANTI-ICE (amber) light to illuminate?

Answer 7

Indicate an over pressure condition in the associated duct downstream of the engine cowl anti-ice valve.

Question 8

The Wing Anti-Ice System uses engine bleed air to prevent ice formation on which part(s) of the wing?

Answer 8

• The three inboard
  leading-edge slats.
• Does not include:
  o leading edge flaps
  o outboard leading-edge slat.

Question 9

How does wing anti-ice affect stall logic?

Answer 9

• Positioning the WING
  ANTI-ICE switch to ON:
  o sets stall warning logic
  for icing conditions.
  o stall speed remains
  elevated for the
  remainder of the flight.

Question 10

What occurs if wing anti-ice is used during takeoff?

Answer 10

If the wing anti-ice is selected ON during take-off, the wing anti-ice valve will close when the thrust levers are advanced for take-off. The switch will trip off at lift off to match valve position.

Question 11

Which parts of the aircraft are electrically heated?

Answer 11

All pitot tubes, AOA vanes, and the TAT probe are electrically heated.