What limits should not be exceeded during flight?

During flight, exceeding G limits can compromise the structural integrity and performance of the aircraft. G limits refer to the maximum allowable load factor that an aircraft can safely withstand, which is expressed in terms of 'Gs' or gravitational forces. When an aircraft experiences excessive G forces, it can lead to structural failures, such as wing deformation or tail separation, and can jeopardize the safety of the flight and its passengers.

Maintaining control within the specified G limits is crucial for safe maneuvers and avoiding potentially catastrophic situations. Pilots are trained to stay within these limits, especially during turns, climbs, and descents, to ensure the aircraft operates within its design specifications and maintains stability. In contrast, while fuel limits, speed limits, and weight limits are also important factors for safe flight operations, they pertain to operational efficiency, performance, and regulatory compliance, rather than the immediate structural integrity of the aircraft in varied flight conditions.