What would be the location of the center of gravity (CG) after 1 hour 30 minutes of flight time given a total weight of 4,137 lb with a CG starting at station 67.8?

To determine the location of the center of gravity (CG) after 1 hour and 30 minutes of flight time, it’s important to consider how the CG shifts during flight due to fuel consumption, passenger/luggage loading, and other weight changes.

Initially, the CG is located at station 67.8. As fuel burns off during flight, the total weight of the aircraft decreases, which can cause the CG to shift forward or backward depending on the aircraft's configuration and loading. The option of 67.79 means that the CG has shifted slightly forward from its original position, indicating a relatively small change likely due to fuel burn-off.

In practice, the degree of CG shift is usually calculated by specific formulas that take into account the amount of fuel consumed, the initial CG position, and the aircraft's design characteristics. The answer of 67.79 reflects a logical projection of the CG after considering these factors.

Correctly estimating CG shifts is crucial during flight operations to ensure aircraft stability and performance are maintained within safe limits. A value like 67.79 ensures that the aircraft remains balanced and within the prescribed parameters for safe flying.