Loading an airplane to the most aft CG will make the aircraft:

When an airplane is loaded to the most aft center of gravity (CG), it affects the aircraft's stability in a significant way. The center of gravity is the point where the total weight of the aircraft is considered to act, and its position relative to the center of lift (the point where the aerodynamic lift acts) plays a crucial role in flight stability.

With the CG located further aft, the aircraft becomes less stable. This is because the moment arm—that is, the distance from the CG to the center of lift—becomes shorter. In cases where the CG is too far back, even small disturbances can lead to greater pitch oscillations. As a result, the aircraft may become more prone to abrupt changes in attitude, especially during maneuvers or turbulent conditions. Essentially, an aft CG reduces the effectiveness of pitch control surfaces and makes it more challenging for the pilot to maintain stable flight.

This decrease in stability is prevalent across all speeds, both slow and high. Maintaining a more forward CG, on the other hand, enhances stability, making it easier for the pilot to control the aircraft and recover from disturbances.

Understanding this relationship between CG and aircraft stability is vital for safe flight operations and highlights the importance of proper loading procedures to ensure the CG is