When drafting a Weight and Balance report, which formula would be used to calculate moment?

The calculation of moment in a Weight and Balance report is determined by the formula that multiplies the weight of an item by its Arm (the distance from a reference point, usually the center of gravity). This relationship is foundational in aircraft weight and balance computations, as it helps determine the leveraging effect that weight has on the aircraft's center of gravity.

Using the formula of Weight x Arm effectively allows for the assessment of how different weights will shift the center of gravity when loaded onto the aircraft. For each item or group of items, their individual moments can be calculated, and these moments can then be summed to get the total moment for the aircraft. This is vital for ensuring that the aircraft is loaded within its specified limits for safe operation.

In contrast, other options presented do not accurately represent the correct approach to calculate the moment in the context of aircraft weight and balance. Some may involve the quantity or configurations of items, but they do not establish the necessary relationship between weight and distance (Arm) crucial for proper moment calculations. Therefore, the selection of the correct formula is essential for maintaining safe weight and balance practices.