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Flashcards in Pressurization Deck (5)
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When do recirculation fans not work?

When DUMP button is pressed.
Smoke is detected in the recirculation bay.
The perspective pack is off.


Where does air in graspers come from?

Air from the right recirculation fan.


Cargo ventilation.

Forward comes from the cabin and then vented off..... Aft is not vented.


Emergency ram air ventilation.

Left side ram opens if in flight and both packs are commanded off or failed and below 25,000 feet.


What do recirculation fans do?

Help reduce the work load on the packs by recirculating already conditioned air and remixing it with incoming air in flight deck and cabin... Provides a mix of 52% fresh air and 48 recirculated.