What is the immediate action for crew at the onset of a depressurization?

What is the immediate action for crew at the onset of a depressurization?

• A. Open all doors mid-flight
• B. Put on oxygen masks, sit in nearest seat, fasten seat belt immediately.
• C. Ignore and continue service
• D. Callout mayhem

Answer: (B)

When depressurization starts, the top priority is preserving the crew’s ability to think clearly and move safely. Donning oxygen masks immediately provides breathable oxygen as cabin pressure drops, preventing hypoxia that can impair judgment and coordination. Then sitting in the nearest seat and fastening the seat belt keeps the body stable and reduces the risk of injury from sudden movements or turbulence, so you’re ready to perform essential duties or assist passengers. Opening doors mid-flight is unsafe and impossible due to the pressure difference, and trying to continue service or ignoring the situation won’t address the immediate safety needs. Calling out “mayhem” isn’t a corrective action and would just add confusion. The immediate, measured steps protect you and enable proper response.

When depressurization starts, the top priority is preserving the crew’s ability to think clearly and move safely. Donning oxygen masks immediately provides breathable oxygen as cabin pressure drops, preventing hypoxia that can impair judgment and coordination. Then sitting in the nearest seat and fastening the seat belt keeps the body stable and reduces the risk of injury from sudden movements or turbulence, so you’re ready to perform essential duties or assist passengers.

Opening doors mid-flight is unsafe and impossible due to the pressure difference, and trying to continue service or ignoring the situation won’t address the immediate safety needs. Calling out “mayhem” isn’t a corrective action and would just add confusion. The immediate, measured steps protect you and enable proper response.