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25 votes
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How do bleedless passenger airliners keep cabin air breathable?

Bleedless aircraft still get air from outside. They just have dedicated compressors to compress outside air for cabin use, rather than relying on bleed air from the engines. The air compressors have ...
Chris's user avatar
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11 votes

How do bleedless passenger airliners keep cabin air breathable?

tl;dr: Through air intake holes using compression. For example, here they are on the fuselage of a Boeing 787, below the forward edge of the wing: Bottom intake air gets compressed (and thus heated) ...
einpoklum's user avatar
  • 546
11 votes
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Is the air in aircraft cabin toxic?

It seems this is a fairly new issue cropping up and I have been able to find some credible research on the topic (i.e. from official aviation authorities and not news outlets or lawyers websites...) ...
Dave's user avatar
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7 votes
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Do pilots breathe the same air as passengers?

In General, Yes. As your image already shows, the same air is distributed throughout the cabin and the flight deck. For example, in the 737 NG FCOMv2 2.30.4 (Air Systems - Air Conditioning ...
Bianfable's user avatar
  • 56k
6 votes

Do pilots get more fresh air than passengers?

Taking the B737 as an example, fresh air from the left pack flows directly into the cockpit (green airflow in the diagram), whereas the passenger cabin is served from the mix manifold only (yellow). ...
summerrain's user avatar
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3 votes
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Why does the cabin air sometimes smell of kerosene?

You might have been smelling cooked turbo oil. Leaking seals can potentially allow oil traces into the compressor bleed discharge, especially on auxiliary power units. The other possibility is ...
John K's user avatar
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2 votes

Do pilots get more fresh air than passengers?

I can confirm that similar air distribution systems also exist for: Boeing 777: The flight deck receives 100% fresh conditioned air from the left pack. The flight deck is maintained at a slightly ...
Bianfable's user avatar
  • 56k
1 vote

Why does the cabin air sometimes smell of kerosene?

If you're smelling it on the ground, it's because there's kerosene in the air around an airport and the plane's door(s) are open. Anything on the wind will blow in. If you don't notice the smell until ...
FreeMan's user avatar
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