Air Bleed/ Cond/ Press/ Vent

Question 1

Maximum Time with Pax on Board & No AC Supply ?

Answer 1

20mins

Question 2

Why must you never use APU Bleed & HP AIR START UNIT at the same time ?

Answer 2

Adverse effects on the AIR BLEED system

Question 3

Avionics Ventilation when OAT below 49°C ?

Answer 3

No limitation on Aircraft ELEC PWR Supply

Question 4

Avionics Ventilation when OAT 49°C < OAT < 55°C ?

Answer 4

2 hours on ELEC PWR

Question 5

Avionics Ventilation when OAT 55°C < OAT < 60°C ?

Answer 5

1 hour on ELEC PWR

Question 6

Avionics Ventilation when OAT 60°C < OAT < 64°C ?

Answer 6

30mins on ELEC PWR

Question 7

Maximum Positive Differential Pressure ?

Answer 7

9.0psi

Question 8

Maximum Negative Differential Pressure ?

Answer 8

-1.0psi

Question 9

Safety Relief Valve Setting ?

Answer 9

8.6psi

Question 10

Maximum Cabin Altitude Selection ?

Answer 10

14,000ft

Question 11

Maximum Normal Cabin Altitude ?

Answer 11

8,000ft

Question 12

Why must you NEVER use AC air from PACKs & LP AC UNIT at the same time ?

Answer 12

Adverse effects on the AC system