AIR CONDITIONING

Question 1

ENG BLEED FAULT

Answer 1

bleed overpressure
bleed overheat
wing or engine leak
bleed valve NOT closed during engine start
bleed valve NOT closed with APU bleed on

Question 2

X-BLEED in AUTO

Answer 2

• open if the APU bleed valve is open
• closed if the APU bleed valve is closed
• closed if there is a wing, pylon or APU leak

Question 3

APU BLEED FAULT

Answer 3

• APU bleed leak

Question 4

RAM AIR pb

Answer 4

• selecting ON opens the inlet if the ▲p is less than 1 psi
• for smoke removal
• for cabin ventilation in the case of a dual PACK failure

Question 5

HOT AIR pb

Answer 5

• selected ON (lights out), the valve regulates hot air pressure
• selected OFF, the valve closes and the trim air valves close

Question 6

HOT AIR FAULT

Answer 6

• duct overheat
• hot air and trim valves close automatically
• PACK 1 controls the cockpit to last selected value
• PACK 2 controls the cabin to the average selected by the FWD and AFT cabin temperature selector knobs

Question 7

PACK FAULT

Answer 7

• valve position disagreement
• compressor outlet overheat
• PACK outlet overheat

Question 8

PACK flow : LO / ECON

Answer 8

A319 less than 138

A320 less than 141

A321 less than 168