Which statement about CG envelope is true?

Which statement about CG envelope is true?

• A. The CG envelope is unrelated to balance and is decorative.
• B. The CG envelope is a fixed point, not an area.
• C. The CG envelope defines the range of permissible center of gravity positions within which the aircraft remains balanced.
• D. The CG envelope is determined after every flight.

Answer: (C)

The CG envelope is a boundary that defines the range of center-of-gravity positions that keep the airplane controllable and stable during flight. It’s an area, not a single fixed point, shown on the weight-and-balance chart for the aircraft’s weight range. Keeping the CG inside these limits ensures there’s enough elevator authority for rotation and flare, stable handling, and predictable stall behavior. It isn’t decorative or meaningless. It’s not something you determine after every flight; the envelope comes from the aircraft’s design and certification, and it only changes if the aircraft’s configuration or modifications alter how weight is distributed.

The CG envelope is a boundary that defines the range of center-of-gravity positions that keep the airplane controllable and stable during flight. It’s an area, not a single fixed point, shown on the weight-and-balance chart for the aircraft’s weight range. Keeping the CG inside these limits ensures there’s enough elevator authority for rotation and flare, stable handling, and predictable stall behavior. It isn’t decorative or meaningless. It’s not something you determine after every flight; the envelope comes from the aircraft’s design and certification, and it only changes if the aircraft’s configuration or modifications alter how weight is distributed.