Questions tagged [oxygen]

The 8th chemical element, which is essential for human life. Above a certain altitude, local air pressure is not sufficient for humans to receive enough oxygen to remain fully aware or conscious. Supplemental oxygen is needed if cabin pressure is not sufficient.

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How do the oxygen masks deploy after a cabin decompression?

Is there any sensor incorporated on the Passenger Service Unit that tells the masks to deploy when a cabin decompression occurs?
user13197
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Why is Oiling Pneumatic Air Tools allowed in airplanes?

If I remember correctly oil in oxygen lines should be avoided due to the possibility of hazardous combustion. However I've seen recently that engineers use oil to lubricate pneumatic air tools. Can someone explain why this is allowed??
Jono
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