2 - Air Systems

Question 1

Auto Altitude rates:

Min -

Max -

Auto Index -

Answer 1

50 fpm

2000 fpm

500 climb/300 descent

Question 2

What systems use bleed air from the center duct?

Answer 2

ADP

Aft/Bulk cargo heat

Center hydraulic reservoir

Question 3

What happens if Altitude Controller fails?

Answer 3

auto switches to other controller

Question 4

What does Pressurization AUTO INOP light indicate? (3)

Answer 4

• both AUTO Controllers inop
• Outflow Valve stuck
• MAN selected

Question 5

Equipment Cooling - NO COOLING

Answer 5

OVRD selected and no cooling air (inhibited for 1 min)

• 90 min before essential avionics and electrical equipment failures

Question 6

Equipment cooling - OVHT

Answer 6

inhibited for 5 min after STBY selected

Question 7

BLEED light

Answer 7

HP and/or PRV valves open when they should be closed

Question 8

What is the purpose of the Trim Air system?

Answer 8

adds warm air to regulate zone temps

Question 9

Temp Zone Control INOP light

One - (3)

All -

Answer 9

• duct overheat
• zone controller fault
• zone OFF
• trim air OFF (average 75F/24C)

Question 10

Which zone controls pack output in AUTO?

Answer 10

zone requiring coolest temp

Question 11

Pack INOP light

Answer 11

• auto controller fault
• can not be reset
• operate in STBY

N - moderate
C - cold (full)
W - warm (full)

Question 12

Pack INOP and PACK OFF lights

Answer 12

• pack overheat (internal or output)
• pack auto to max cooling
• reset after pack cools