How do oxygen masks deploy and who assists passengers?

How do oxygen masks deploy and who assists passengers?

• A. Masks deploy automatically on cabin depressurization; crew assist passengers to secure masks, prioritizing children and those needing help.
• B. Masks deploy only when the pilot signals; passengers secure own masks.
• C. Masks never deploy; oxygen is supplied by portable tanks.
• D. Masks deploy manually by crew from a service panel.

Answer: (A)

Oxygen masks are designed to deploy automatically whenever the cabin loses pressure, so passengers get oxygen without waiting for instruction. The crew then assists passengers in putting on the masks and prioritizes those who need help, such as children, ensuring they are cared for quickly. This automatic deployment is crucial because hypoxia can occur within seconds at high altitude, so immediate access to oxygen is essential. The other ideas don’t fit safety procedures: masks aren’t waiting for a signal from the pilot, there aren’t portable oxygen tanks used for general cabin supply, and deployment isn’t done manually from a service panel.

Oxygen masks are designed to deploy automatically whenever the cabin loses pressure, so passengers get oxygen without waiting for instruction. The crew then assists passengers in putting on the masks and prioritizes those who need help, such as children, ensuring they are cared for quickly. This automatic deployment is crucial because hypoxia can occur within seconds at high altitude, so immediate access to oxygen is essential. The other ideas don’t fit safety procedures: masks aren’t waiting for a signal from the pilot, there aren’t portable oxygen tanks used for general cabin supply, and deployment isn’t done manually from a service panel.