If you've ever traveled on an airplane, you know that masks can drop down to supply oxygen in the case of an emergency. Airline oxygen masks have about a 15-minute supply and typically fall when an ...

Question: How long will supplemental oxygen last after the masks drop in an emergency? — Submitted by reader John A., N.J. Answer: On typical airliners oxygen generators will last 10 to 14 minutes.

Outdated studies, misunderstood guidance, and the persistence of a safety claim the author says does not hold up.

Pilot oxygen masks should be kept clean to reduce the danger of infection and to prolong their lives. Various mild cleaners and antiseptics that are free of petroleum products can be used. Whether in ...

Answer: On typical airliners oxygen generators will last 10 to 14 minutes. That is more than enough time to descend to 10,000 feet or the lowest altitude above the terrain. Airplanes can descend very ...