Air Conditioning System, page 02-10-1 Flashcards
The air conditioning system provides what
temperature-regulated, conditioned air to the cockpit and cabin
The air conditioning units (ACU’s) are commonly referred to as what?
Packs
Aircraft pressurization is accomplished by regulating what?
Overboard discharged of conditioned air through the outflow valves
During unpressurized flight how is the cockpit and cabin ventalated?
by using ram air
where is air conditioned converted from
10th stage bleed air, APU or an external sourse
How many packs can provide sufficient air to cool and pressurize the aircraft
A single pack
Where are the packs located
in the aft equipment bay
The packs have automatic protection in what condition?
Over temp., and over pressure
The left pack is powered by what
DC essential bus
What powers the right pack
DC bus 2
If the ADG is deployed what pack is operational?
Left pack
What opens to allow 10th stage air to the packs
The pressure-regulating shutoff valve (ACU valve)
What two modes do the ACU valves operate in
High or Low
When are the ACU’s in High mode
When an over temp or over press is sensed (the good pack goes to high) or on the ground with the APU running
Where is the conditioned air duct-ed to?
The cabin, cockpit and the avionics compartment
