Which of the following best describes how weight and balance are managed for safe flight?

• A. They are maintained within certified limits to ensure stability and controllability
• B. They are adjusted only during takeoff to save weight
• C. They are not important for modern aircraft
• D. They are determined by flight crew during flight without calculation

Answer: (A)

Keeping the aircraft within certified weight and center-of-gravity limits ensures stability and controllability. The center of gravity affects how the airplane responds to control inputs and how it behaves in flight. If the load is too far forward, elevator authority can be reduced, the airplane may pitch down more slowly, and takeoff and landing performance can suffer. If the load is too far aft, the aircraft can become unstable or even hard to recover from unusual attitudes, with reduced longitudinal stability and control effectiveness. Aircraft are designed with a specific CG envelope, and staying inside that envelope during all phases of flight—loading, takeoff, climb, cruise, and landing—provides predictable handling, safer stall characteristics, and keeps structural loads within design limits. That's why weight and balance are planned and recalculated as fuel burns, payload is added or removed, and routes or configurations change.