Why must loads be adequately secured in an aircraft?

Loads must be adequately secured in an aircraft primarily to avoid unplanned center of gravity (C of G) movement and potential damage to the aircraft. The center of gravity is a crucial factor in an aircraft's performance and stability; any shift in the load can lead to an unstable aircraft, making it difficult to control during flight. For instance, if cargo shifts unexpectedly, it can change the aircraft's balance, affecting maneuverability and leading to safety risks.

Furthermore, unsecured loads can cause physical damage to the aircraft interior or to other cargo during turbulence or sudden maneuvers. Inadequate securing of loads can result in additional hazards both during flight and on the ground, potentially leading to accidents or injuries. Therefore, securing loads is essential for maintaining both operational safety and structural integrity in aviation.