Why is it important to check the CG during load planning?

Checking the center of gravity (CG) during load planning is crucial for maintaining flight performance and safety. The CG is the point where the aircraft's mass is balanced, and its location directly affects the aircraft's stability and controllability. If the CG is outside the specified limits, it can lead to several flight issues, such as difficulty in controlling the aircraft, altered stall characteristics, and changes in performance during maneuvers.

When the CG is too far forward or too far aft, it can adversely affect the aircraft's handling, making it harder to control, especially during takeoff, landing, and in flight. For instance, a forward CG can lead to a nose-heavy condition, increasing the workload on the pilot and potentially leading to slower response times. Conversely, an aft CG can make the aircraft tail-heavy, which might result in a higher risk of stalling.

Thus, ensuring the CG is within acceptable limits during load planning is an essential safety measure that promotes optimal flight characteristics, enhances operational performance, and significantly reduces the risk of accidents related to improper weight distribution.