AIR SYSTEMS

Question 1

How many Cabin Air Compressors (CACs) are there?

Answer 1

4

Question 2

What is the purpose of the CACs ?

Answer 2

Pressurise and regulate the flow of outside air to the Packs

Question 3

How many pack control systems are there?

Answer 3

Two

Question 4

Following a pack shutdown , how can the pack be reset ?

Answer 4

Press the AIR CONDITIONING RESET switch

Question 5

In Standby Cooling Mode, which messages are displayed on
1. EICAS
2, Air Synoptic ?

Answer 5

1. PACK MODE (L/R) EICAS advisory

2. STBY COOLING (Amber)

Question 6

What is the source of FD air ?

Answer 6

100% conditioned outside air

Question 7

What is the source of air for the packs ?

Answer 7

Outside Air

Question 8

What determines the pack outlet temperature ?

Answer 8

The temperature zone requiring the coolest temperature controls the pack outlet temperature