What is the duration of the high outlet for a standard portable oxygen bottle?

The duration of the high outlet for a standard portable oxygen bottle is 75 minutes. This time duration is based on the capacity of the bottle and the flow rate typically used during emergency situations, which allows for a sufficient supply of oxygen to be delivered to passengers in need.

The specific 75-minute duration reflects the balance between the size of the portable oxygen bottle and its intended use cases, ensuring that a flight attendant can safely and effectively provide oxygen to a passenger for a reasonable period.

Other durations, such as 60, 90, or 120 minutes, do not align with the standard specifications for the portable oxygen bottles used in airline operations, as these timeframes either overestimate or underestimate how long the oxygen supply will last given typical usage scenarios. Understanding this is essential for flight attendants to effectively manage in-flight emergencies involving oxygen requirements.