Air Conditioning

Question 1

In high ambient temperatures on the ground (greater than +35°C/95°F) after APU start, how can the cabin be cooled down most efficiently?

Answer 1

Select full cold manual mode, close all doors, minimize electrical loads

Question 2

What is the function of the RAM AIR switch?

Answer 2

Closes both air conditioning pack valve, allowing outside air to the cabin

Question 3

What is the function of the AUTO TEMP SELECT switch?

Answer 3

Allows auto temp selection to be displayed on the overhead temperature display window

Question 4

What is the function of the TEMP DISPLAY ZONE switch?

Answer 4

Allows the actual temperature of the zones to be displayed in the overhead panel

Question 5

What is the function of the TEMP DISPLAY DUCT switch?

Answer 5

Allows the actual temp of the air in the ducts to be displayed on the overhead panel

Question 6

What is the function of the AUTO/MANUAL SELECT switches?

Answer 6

Allows the rheostat to set the desired temperature in the AUTO or MANUAL position

Question 7

What is the temp range in the AUTO position?

Answer 7

60° to 90° F

Question 8

What is the temp range in the MANUAL position?

Answer 8

35° to 230°F

Question 9

How do the engine START and START MASTER switches affect the operation of the air conditioning packs?

Answer 9

The engine START MASTER switch turns OFF the right pack, and the engine START switch turns OFF the left pack.

Question 10

If a cabin overhead vent(gasper) is opened, what will the temperature of the air coming out of it be?

Answer 10

Slightly warmer than freezing