Mặt nạ oxy cung cấp 12-22 phút không khí
Embed This Widget
Add the script tag and a data attribute to embed this widget.
Embed via iframe for maximum compatibility.
<iframe src="https://airportfyi.com/iframe/entity//" width="420" height="400" frameborder="0" style="border:0;border-radius:10px;max-width:100%" loading="lazy"></iframe>Paste this URL in WordPress, Medium, or any oEmbed-compatible platform.
https://airportfyi.com/entity//Add a dynamic SVG badge to your README or docs.
[](https://airportfyi.com/entity//)Use the native HTML custom element.
12-22
minutes
The emergency oxygen masks in a passenger aircraft provide only 12 to 22 minutes of breathable air, which is enough time for pilots to descend to safe altitude.
Giải Thích
Passenger oxygen masks use chemical oxygen generators that produce oxygen through a chemical reaction triggered when the mask is pulled. The limited duration is intentional: if cabin pressure is lost, pilots will immediately descend to below 10,000 feet where the air is breathable without supplemental oxygen. This emergency descent typically takes 3-5 minutes from cruising altitude.