Why are weight and balance important in flight planning?

• A. They determine color scheme.
• B. They have no impact.
• C. They affect performance, stability, and controllability; must stay within limits.
• D. They only affect fuel burn.

Answer: (C)

Weight and balance are about where the aircraft’s weight sits relative to its center of gravity, and that position directly affects performance, stability, and controllability. If the center of gravity is too far forward, you’ll have a nose-down tendency with reduced elevator authority, which can raise stall speed and require a longer takeoff run. If it’s too far aft, longitudinal stability suffers, control responsiveness can become erratic, and the airplane can be harder to control or even unsafe in certain attitudes.

In flight planning, staying within the published weight and balance limits ensures you always have adequate takeoff and climb performance, proper stall margins, and safe handling throughout the flight. Loading changes with passengers, cargo, and fuel shift the CG, so calculations are essential for each phase of flight to maintain safe margins. The idea isn’t just about fuel burn; weight and balance affect many aspects of flight, and ignoring them can compromise performance and safety. Color schemes have no bearing on flight safety, which is why they’re not a factor.