The normal fraction of inspired oxygen (FIO2), or concentration of oxygen in ... Partial rebreather masks provide very high concentrations of oxygen without the risk of suffocation.

The footage shows passengers on a plane wearing oxygen masks deployed from their seats ... air accidents was reported to be "considerably high" in a February 2022 study in Safety Science.

Just as a plane is about to takeoff, flight attendants go through a thorough safety procedure where they also highlight the need to “secure your own mask ... high altitudes is thin, and oxygen ...