During portable oxygen bottle use, which item must be donned immediately after removing the bottle from its bracket?

During portable oxygen bottle use, which item must be donned immediately after removing the bottle from its bracket?

• A. Shoulder strap
• B. Oxygen mask
• C. Valve
• D. Face shield

Answer: (A)

Securing the portable oxygen bottle to your body is the first priority to maintain control and safety in a cramped cabin. After removing the bottle from its bracket, you don the shoulder strap immediately so the bottle stays stable and leaves your hands free to manage other tasks or access the regulator. This step prevents the bottle from swinging or slipping during movement and ensures you can proceed with the oxygen delivery setup smoothly. The oxygen mask, valve, and face shield are part of the oxygen system, but they come after you’ve secured the bottle; the mask is used to deliver oxygen when needed, the valve is operated as required, and a face shield isn’t part of the standard portable oxygen procedure.

Securing the portable oxygen bottle to your body is the first priority to maintain control and safety in a cramped cabin. After removing the bottle from its bracket, you don the shoulder strap immediately so the bottle stays stable and leaves your hands free to manage other tasks or access the regulator. This step prevents the bottle from swinging or slipping during movement and ensures you can proceed with the oxygen delivery setup smoothly. The oxygen mask, valve, and face shield are part of the oxygen system, but they come after you’ve secured the bottle; the mask is used to deliver oxygen when needed, the valve is operated as required, and a face shield isn’t part of the standard portable oxygen procedure.