After alterations to an aircraft, how much did the new empty weight CG move aft?

The movement of the center of gravity (CG) is a crucial factor in aircraft weight and balance calculations, particularly after modifications or alterations are made. In this context, the correct choice indicates that the new empty weight CG moved 1.62 inches aft, which is a specific measurement that reflects a moderate shift in the aircraft's balance.

When alterations are made to an aircraft, such as adding or removing equipment, this can significantly impact the distribution of weight. The forward or aft movement of the CG affects stability and control. A movement of 1.62 inches aft may suggest that the modifications involved a substantial addition of weight towards the rear of the aircraft, or a removal of weight from the front, providing a noticeable shift that still keeps the aircraft within safe operating limits.

Understanding the implications of this shift is essential for ensuring that the aircraft remains controllable and stable during flight. Accurately determining the extent of CG movement after alterations helps flight planners and engineers assess the airworthiness of the aircraft and maintain compliance with safety regulations.