How should the flow of oxygen be opened on a POB?

The correct approach to opening the flow of oxygen on a Portable Oxygen Bottle (POB) is to turn the ON/OFF valve counterclockwise. This action allows the oxygen to flow freely from the bottle, making it readily available for use.

Turning the valve counterclockwise is a standard operation procedure designed to ensure the safety and efficiency of the oxygen delivery system. When the valve is turned in this direction, it typically engages the mechanism that releases oxygen, allowing it to be administered as needed, particularly during in-flight emergencies where supplemental oxygen may be required.

Other options, such as turning the valve clockwise, pulling the oxygen mask, or pressing an activation button, would not correctly initiate the flow of oxygen. Each of these alternatives either serves a different function or does not operate the oxygen system effectively. Understanding this mechanism is crucial for flight attendants, ensuring they can assist passengers with supplementary oxygen without delay during critical situations.