If the empty weight CG lies within the empty weight CG limits, which statement is true?

• A. It is not necessary to calculate CG extremes.
• B. It is necessary to calculate CG extremes.
• C. You must reweigh the aircraft.
• D. You should ballast to move CG into the limits.

Answer: (A)

The level of balance the aircraft must stay within is defined by the CG limits. If the empty weight CG already falls between those forward and aft limits, you don’t need to perform a separate calculation of CG extremes for the empty aircraft. The basic balance is acceptable, so the immediate concern becomes the actual loading you plan to carry (fuel, passengers, baggage) and making sure that final loaded CG stays within the permitted envelope.

In practice, you would still compute the CG for your intended load and verify it lies between the forward and aft limits and that you don’t exceed the maximum gross weight. Ballast or reweighing would be considerations only if the final loaded CG ended up outside the allowable range.