During a rapid decompression, the immediate action for crew members is to

• A. Don Oxygen Mask
• B. Stand and observe
• C. Call for assistance
• D. Sit down

Answer: (A)

When rapid decompression happens, the first priority is to ensure you have a reliable source of oxygen. Oxygen is essential to keep the brain and other organs functioning as cabin pressure drops. Donning your oxygen mask immediately delivers supplemental oxygen, restoring oxygen delivery so you can think clearly, communicate, and carry out any required actions. It’s important to put your own mask on first because you won’t be able to help others effectively if you’re not getting adequate oxygen yourself. Standing and observing wastes precious seconds; calling for assistance is important, but it won’t restore oxygen, and sitting down would hinder your ability to don the mask and respond to the situation.