Questions tagged [pack]

An air conditioning pack (commonly referred to as "PACK") is a unit on turbine aircraft which provides cabin ventilation, cooling and pressurization (Pressurization and Air Conditioning Kit).

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When are the engine bleed air, APU and packs turned on in the B737?

When do I have to turn on the engine bleed air and APU? In videos I have seen that they are always on, and sometimes they turn them off after take-off. I also have the same question about the packs.
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1answer
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How should the pack flow knob be set on an Airbus A320? [duplicate]

On the Airbus A320 there is a pack flow knob and you can select LO(80%), NORM (100%), or HI(120%) according to the number of passengers and ambient conditions. Someone told me you select LO if there ...
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How does Pack Flow work on the A320?

I am referring to an Airbus A320. I have heard of Pack Flow but I don't understand it. If you put it on High, does that mean that all the parts of the air conditioning system work faster and harder? ...
5
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1answer
352 views

Is it possible to reuse water extracted from the PACKs Water extractors?

During the Process inside of the Air Generation Unit (AGU) there is a water extractor behind the condenser separating the water from the air which will flow to the Re-Heater. Is it posible to filter ...
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2answers
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Can an airliner complete a flight with one pack inoperative?

I was travelling as a passenger on a 747-8. Around 5 minutes after we left the gate, the captain said we had to return to the gate due to "technical issues with the air-conditioning". The mechanic ...
8
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1answer
1k views

What happens to the cabin pressure if all the packs (ACMs) stop working?

I have gone through the cabin pressurization article in Wikipedia. It says there will be some number of Air Cycle Machines (ACMs, or packs) to supply pressurized air into the cabin. What happens if ...
14
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3answers
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Why do pilots disable the air-conditioning 'packs' during takeoff?

I've realized that some pilots turn the air conditioning units (also called 'packs') OFF during takeoff, like in this video: LH456 Takeoff Video Is there any operational reason for that?