How far apart should a passenger on supplemental oxygen be from a passenger with PPOC?

How far apart should a passenger on supplemental oxygen be from a passenger with PPOC?

• A. 5 feet
• B. 10 feet
• C. 15 feet
• D. 20 feet

Answer: (B)

In aircraft safety, keeping oxygen devices apart helps limit the flame-sustaining environment around each passenger. The recommended separation is about 10 feet. Oxygen supports combustion, so local enrichment of oxygen around a device can make a small ignition more likely and can allow a fire to spread more quickly if one occurs. Spacing devices about 10 feet apart reduces the chance that two separate oxygen sources create overlapping zones of elevated oxygen, and it also gives better room for crew to access and manage the equipment if an issue arises. If the devices are closer together, the risk of a dangerous concentration of oxygen in one area increases; if they’re farther apart, it’s safer but not always practical in a cabin. Ten feet provides a practical, safer balance, which is why it’s the best answer.

In aircraft safety, keeping oxygen devices apart helps limit the flame-sustaining environment around each passenger. The recommended separation is about 10 feet.

Oxygen supports combustion, so local enrichment of oxygen around a device can make a small ignition more likely and can allow a fire to spread more quickly if one occurs. Spacing devices about 10 feet apart reduces the chance that two separate oxygen sources create overlapping zones of elevated oxygen, and it also gives better room for crew to access and manage the equipment if an issue arises.

If the devices are closer together, the risk of a dangerous concentration of oxygen in one area increases; if they’re farther apart, it’s safer but not always practical in a cabin. Ten feet provides a practical, safer balance, which is why it’s the best answer.