The AFT Index represents a balance point - what does a value of '1' indicate?

The AFT Index is a critical parameter in understanding the weight distribution of an aircraft, specifically related to the center of gravity (CG). A value of '1' on the AFT Index indicates the aft limit of the aircraft's center of gravity range. This means that when the index reads '1', the aircraft is at the maximum allowable rearward position of its weight distribution, ensuring that the center of gravity does not exceed safety limits for stable flight.

The significance of maintaining the center of gravity within specified limits is paramount to ensure optimal flight performance and safety. If the CG shifts too far aft, it can result in control difficulties for the pilot, affecting the aircraft's stability.

Values less than '1' would represent positions toward the forward limit, while greater values reflect conditions outside the safe operational limits, not specifically defined in the provided options.