Define "weight and balance" in aviation.

Weight and balance in aviation refers to the calculations and processes used to ensure that the aircraft's load is distributed properly throughout its structure for safe flight operations. This involves determining the total weight of the aircraft and the center of gravity (CG) location, which is the point where the weight of the aircraft is concentrated. Proper weight and balance contribute to maintaining stable flight characteristics, thereby preventing issues such as stalls and loss of control.

When the load is balanced correctly, the aircraft can perform optimally, achieving the desired flight performance and ensuring safety during takeoff, flight, and landing. Understanding how weight affects an aircraft's handling characteristics is crucial for pilots and crew members, as it impacts the aircraft's lift, drag, and overall aerodynamics.

In contrast, while aerodynamics, fuel efficiency, and passenger safety are vital aspects of aviation, they do not specifically define weight and balance. Weight and balance focus purely on the distribution of weight within the aircraft and its effect on performance and control.