When looking to ensure that an aircraft's loading is acceptable, what is the primary measurement to consider?

In evaluating whether an aircraft's loading is acceptable, both weight and center of gravity (CG) must be considered because they are interrelated factors critical to the safety and performance of the aircraft.

Weight is fundamental, as exceeding the maximum weight limit can impair the aircraft's ability to climb, require longer takeoff distances, and influence landing performance. However, merely adhering to the weight limits does not guarantee safe operations. The distribution of that weight is equally important, which is where the center of gravity comes into play. The CG affects the aircraft's stability, control, and responsiveness. An improperly balanced aircraft can lead to difficulties in maneuvering and even loss of control.

Therefore, analyzing both the weight and the center of gravity gives a comprehensive view of whether an aircraft is loaded correctly, ensuring that it operates within the designed safety margins. Evaluating these two parameters together is vital because they interact; changing one can affect the other. Hence, considering only one aspect, such as weight alone, could lead to unsafe flying conditions.