When must passengers onboard at 15,000 feet be provided oxygen?

Passengers must be provided with supplemental oxygen when the aircraft is flying above 14,000 feet. This regulation is in place because, at altitudes above 14,000 feet, the partial pressure of oxygen decreases, leading to insufficient oxygen availability for normal physiological function.

At this altitude, the risk of hypoxia, which can impair judgment, coordination, and overall cognitive function, increases significantly. The use of supplemental oxygen helps to mitigate these risks and ensures the safety and well-being of passengers during the flight.

This regulation is specifically designed for non-pressurized aircraft and is a critical safety measure to ensure that all occupants can breathe comfortably and maintain cognitive function while flying at higher altitudes. Therefore, providing oxygen to passengers above 14,000 feet is essential for their safety and health.