Air Conditioning and Pressurization

Question 1

How would the PACKs operate in icing conditions at 2000’ AGL in CLB thrust

Answer 1

Pack 1 off Pack 2 on

LIPP/EGGO

Question 2

How would the PACKS operate during a go-around at 1100 AGL

Answer 2

Both Packs would turn off

LIPP/EGGO

Question 3

What altitude must be set in the pressurization controller?

Answer 3

The landing eleveation

Question 4

What is the maximum operational altitude with one PACK inoperative

Answer 4

FL250

Question 5

During a takeoff in icing conditions, when will pressurization begin?

Answer 5

The cabin will begin to pressurize when thrust is set for takeoff (Detent)

Question 6

What is the function of the DUMP button on the automatic pressurization controller? Will the Dump button work if the Digital controller is set to manual mode?

Answer 6

Dump will depressurize the cabin of the aircraft to an altitude of 14,500’ MSL or actual altitude of the aircraft which ever is lower.
No the Dump only works in AUTO mode

Question 7

What is the purpose of the pressurization/static ports located on the lower/rear portion of the fuselage?

Answer 7

The purpose of the pressurization/static ports is to provide over-pressure/under-pressure relief should the cabin differential exceed 8.1 PSI or -0.3 PSI

Question 8

What is the Ram Air Doors and when would they open?

Answer 8

NACA vents on the underside of the fuselage. Ram air doors open in the “emergency position” to allow ambient air to flow into the cabin but will not pressurize the cabin