What is the key characteristic of a "wall" referred to as a bulkhead in an aircraft?

A bulkhead in an aircraft serves as a key structural and functional component that separates different sections of the cabin. This division can be between various classes of service, various sections of the aircraft, or to create specific areas such as a galley or lavatory. The presence of bulkheads enhances passenger flow and contributes to the overall organization of the cabin space, improving safety and passenger comfort.

While a bulkhead may support overhead bins and play roles related to safety and cabin management, its primary function is to act as a barrier or divider. This helps in efficiently managing the cabin layout and maintaining order during boarding and deplaning processes.