Why is it important to secure items in an aircraft?

Securing items in an aircraft is crucial primarily for safety reasons, particularly during turbulence. Turbulence can cause unexpected movements of the aircraft, which may lead to unsecured items becoming projectiles. These items can pose a serious risk to both passengers and crew members, potentially resulting in injury. By ensuring that all items are properly stowed and secured, the risk of accidents during flight, especially in turbulent conditions, is significantly minimized. This practice is part of the broader safety protocols in aviation, aimed at ensuring a secure environment during all phases of flight.

While preventing theft, allowing for quick access in emergencies, and maintaining passenger comfort might be relevant considerations, they do not directly relate to the primary safety objective during turbulence, which is why ensuring items are secured takes precedence.