21-10 Air Conditioning

Question 1

What is faulty if “FAN” appears in amber on the COND SD page?

Answer 1

The recirculation fan (either cockpit or cabin depending on location of memo)

Question 2

What is the temperature range on the selector?

Answer 2

18 to 30 degC (cabin crew have +/-2.5 degC control)

Question 3

What is the temperature displayed on the COND SD page in small number below the main zone temperatures?

Answer 3

Zone Duct Temperature

Question 4

When does the zone duct temperature go amber?

Answer 4

80 degC

Question 5

When does the outflow valve open (and what to) when the RAM AIR pb is on and under automatic control?

Answer 5

The outflow valve opens to about 50%, provided that it is under automatic control, and dP is less than 1 PSI.

Question 6

Does the outflow valve open (and what to) when the RAM AIR pb is on and under manual control?

Answer 6

It does not open even if dP is less than 1 PSI.