How should baggage be loaded on board the aircraft?

Loading baggage onto an aircraft should be done by priority, necessity, and weight to ensure safety, balance, and efficiency during flight operations. This approach considers the weight distribution within the cargo area, which is crucial for maintaining the aircraft's center of gravity and stability. Heavier items need to be placed correctly to prevent imbalances that could affect the aircraft's performance.

Prioritizing baggage also allows for easier access to essential items, such as medical equipment or important travel needs, ensuring that these can be retrieved promptly upon landing. Additionally, necessity ensures that items which may be needed shortly after arrival, such as carry-on bags or critical materials, are loaded in a way that allows for quick access.

The other loading methods, such as alphabetical order or following passenger requests, do not take into account these vital safety and operational concerns, which can result in potential hazards during flight. Therefore, loading by priority, necessity, and weight is the most effective and safest method in air transportation practices.