Which statement best describes the crew's use of oxygen management and alerting authorities when cabin pressure is abnormal?

Which statement best describes the crew's use of oxygen management and alerting authorities when cabin pressure is abnormal?

• A. Manage oxygen supply, monitor safety, descend or maintain per procedure, and notify ATC if needed.
• B. Descend immediately without procedures.
• C. Ignore and continue.
• D. Land immediately.

Answer: (B)

When cabin pressure becomes abnormal, the immediate priority is to protect everyone on board by providing oxygen, closely monitoring the situation, and following the published descent or altitude-maintenance procedure. Crews don the oxygen, ensure the oxygen system is functioning for both crew and passengers, and assess the cabin altitude while following the aircraft’s standard operating procedures. The descent to a safe altitude or maintaining the specified altitude per procedure is chosen based on the situation, and ATC is notified if the flight path, altitude, or routing will be affected. This combination—managing oxygen supply, monitoring safety, descending or holding as directed by procedures, and informing ATC when needed—best describes the proper response to an abnormal cabin pressure event. Descent without procedures, ignoring the situation, or landing immediately without following the established SOPs would bypass critical checks and coordination, increasing risk rather than reducing it.

When cabin pressure becomes abnormal, the immediate priority is to protect everyone on board by providing oxygen, closely monitoring the situation, and following the published descent or altitude-maintenance procedure. Crews don the oxygen, ensure the oxygen system is functioning for both crew and passengers, and assess the cabin altitude while following the aircraft’s standard operating procedures. The descent to a safe altitude or maintaining the specified altitude per procedure is chosen based on the situation, and ATC is notified if the flight path, altitude, or routing will be affected. This combination—managing oxygen supply, monitoring safety, descending or holding as directed by procedures, and informing ATC when needed—best describes the proper response to an abnormal cabin pressure event.

Descent without procedures, ignoring the situation, or landing immediately without following the established SOPs would bypass critical checks and coordination, increasing risk rather than reducing it.