During preflight, what must be true about the POB's packaging and tubing?

During preflight, what must be true about the POB's packaging and tubing?

• A. Mask is contained in a plastic bag and tubing plugged into the HI outlet
• B. The mask is outside the bag and tubing unplugged
• C. The tubing is not connected to the HI outlet
• D. The gauge reads 1,500 PSI or above

Answer: (A)

During preflight, the portable oxygen system should be prepared so it’s clean, protected, and ready to deliver oxygen. Keeping the mask contained in a plastic bag plus having the tubing plugged into the HI outlet accomplishes this: the bag protects the mask from dust, moisture, and damage while it’s stored, and the tubing being connected to the HI outlet ensures the oxygen path is ready to flow when activated. If the mask were not in the bag or the tubing left unplugged, contaminants could reach the mask and the system wouldn’t be primed to deliver oxygen when needed. The gauge condition is a separate check and not part of this packaging setup.

During preflight, the portable oxygen system should be prepared so it’s clean, protected, and ready to deliver oxygen. Keeping the mask contained in a plastic bag plus having the tubing plugged into the HI outlet accomplishes this: the bag protects the mask from dust, moisture, and damage while it’s stored, and the tubing being connected to the HI outlet ensures the oxygen path is ready to flow when activated. If the mask were not in the bag or the tubing left unplugged, contaminants could reach the mask and the system wouldn’t be primed to deliver oxygen when needed. The gauge condition is a separate check and not part of this packaging setup.