System Review PTM CH-11 (Air Conditioning)

Question 1

Does Environmental and Pressurization air require both engines operating?

Answer 1

No, one engine can provide everything.

Question 2

Can the APU provide bleed air to the ACM with the APU BLEED AIR button selected?

Answer 2

Yes.

Question 3

Engine bleed air supplies the ACM through what valves ?

Answer 3

Mass Flow.

Question 4

Cabin air Recirculation Shutoff Valve opens with APU or either engine operating and PRESS SOURCE selector in what?

Answer 4

NORM

Question 5

The recirculation fan defaults to what when the recirculation valve opens?

Answer 5

Low and with selection of MAX COOL will automatically adjust to full cold, so long as APU is running.

Question 6

Can the cockpit and cabin temperature be independently controlled?

Answer 6

Yes both automatically and manually.

Question 7

The automatic control of the cockpit and cabin temperature are controlled from where?

Answer 7

On either MFD GTC > SYSTEM > TEMP

Question 8

Can MAX COOL be selected with APU ON and OFF?

Answer 8

Yes.

Question 9

Does MAX COOL only work to provide cold air flow?

Answer 9

No. Works with cold or warm air from engine bleed air.

Question 10

What temperature air do the WEMACS provide?

Answer 10

Cold air only.

Question 11

Mixed hot and cold air is routed via ducts to where?

Answer 11

Floor vents and the left overhead light bar.