Why is calculating the moment around the center of gravity important?

Calculating the moment around the center of gravity is crucial for maintaining aircraft balance within specified limits. The center of gravity (CG) is the point where the weight of the aircraft is balanced in all directions. When an aircraft is loaded, whether with fuel, cargo, or passengers, the distribution of weight affects its balance.

If the CG is not within the specified limits, it can lead to control problems during flight, impacting stability and maneuverability. Therefore, understanding the moment—which is the product of weight and the distance from a reference point (the CG)—allows operators to predict how changes in load will affect the overall balance of the aircraft.

By ensuring the moment calculations keep the aircraft stable, crews can operate within safe limits, thereby enhancing the safety and efficiency of operations. This fundamental aspect of aircraft operation ensures not only optimal performance but also adherence to regulatory standards for flight safety.