What is the minimum gauge reading you should not allow the POB to drop below?

The minimum gauge reading you should not allow the Portable Oxygen Bottle (POB) to drop below is 200 PSI. This threshold is critical for ensuring that ample oxygen supply is available for emergency situations. Maintaining the POB above this level ensures that flight attendants can provide adequate oxygen to passengers who may need it during critical moments, such as during decompression or medical emergencies.

If the gauge reading drops below 200 PSI, there is a risk that the POB may not have sufficient oxygen available when it’s needed most, which could jeopardize passenger safety. Therefore, understanding the significance of the 200 PSI minimum is essential for maintaining operational readiness and ensuring the safety of everyone on board.