During a loss of cabin pressure, what are the immediate priorities and with whom should you coordinate?

• A. Immediately evacuate the aircraft and inform passengers to breathe normally.
• B. Provide oxygen masks to everyone regardless of direction, secure cabin.
• C. Protect passengers by ensuring oxygen masks are provided if directed, secure the cabin, and coordinate with the lead flight attendant and cockpit for procedures.
• D. Only secure the cabin and wait for ground crew.

Answer: (C)

Oxygen supply is the immediate priority when cabin pressure is lost. The most effective response is to provide oxygen to those who need it as directed by the cockpit, while securing the cabin to maintain order and safety during the event. This means guiding passengers to place on their oxygen masks or assisting them as instructed, but only following the crew’s directions for distribution because the flight deck determines the exact procedure and timing.

At the same time, the cabin should be secured—loose items stowed, seats upright or in a safe position, and the cabin kept orderly to reduce risk and allow crews to move and communicate effectively. Coordination with the lead flight attendant and the cockpit is essential because the lead cabin supervisor communicates the cabin plan to the crew, and the cockpit provides the procedures, such as initiating a descent, selecting the appropriate oxygen flow, and issuing cabin-wide announcements. Together, they ensure actions are synchronized and aligned with the aircraft’s emergency protocol.

Other options miss the need for directional guidance and coordination: evacuating immediately would be premature and dangerous, giving oxygen to everyone without authority can misallocate resources, and merely securing the cabin without coordinating with the cockpit neglects the required procedures and descent plan.