What is the purpose of weight and balance checks on ATR flights and how is CG maintained?

• A. It has no effect on flight performance
• B. They affect stability, controllability, and performance; loaded according to the load sheet to stay within certified CG limits
• C. They only affect fuel efficiency
• D. The CG is not critical for ATR

Answer: (B)

Weight and balance checks ensure the airplane’s total weight and how that weight is distributed keep the center of gravity within the approved limits. The CG location governs longitudinal stability and control effectiveness, so it directly affects how the aircraft feels in pitch and how it behaves in different phases of flight. A CG that’s too far forward makes the airplane more stable but harder to rotate and climb, and it can increase stall and landing speeds. A CG that’s too far aft reduces stability and can make the aircraft harder to control, especially during stalls and recoveries.

To maintain CG, the load sheet specifies how weight should be distributed among passengers, baggage, cargo, and fuel. The aircraft is loaded accordingly, and ballast or fuel adjustments may be used to keep the CG within certified limits for all phases of flight. Keeping the CG within its envelope ensures safe, predictable stability, controllability, and performance, not just fuel efficiency.