If an empty weight of 1,271 pounds has a moment of 102.04 in-lb/1,000, are a pilot and copilot weighing 260 pounds within the CG envelope?

To determine if the pilot and copilot weighing 260 pounds are within the center of gravity (CG) envelope, it involves calculating whether the total moment created by the loaded aircraft, including the additional weight of the pilot and copilot, stays within the acceptable range for CG.

The empty weight's moment is given in pounds, which means as you add weight (the pilot and copilot in this case), the total moment will increase. The moment is calculated by multiplying the weight by the distance from the reference point (usually the leading edge of the wing or a specified reference point on the aircraft).

Given that the moment for the empty weight is 102.04 in-lb/1,000 pounds, it serves as a baseline moment when the aircraft is unoccupied. When the weight of the pilot and copilot is added, you generate an additional moment based on their combined weight and their distance from the reference point. As long as the newly calculated moment doesn't exceed the limits specified in the aircraft's performance data, the configuration remains within the CG envelope.

The answer indicates that adding the pilot and copilot keeps the aircraft within the acceptable CG range. This means that their combined weight along with the empty weight plus its moment will not take the total