How is total aircraft weight calculated before a flight?

The total aircraft weight is calculated by summing the empty weight, which is the weight of the aircraft without any payload or fuel, the payload, which includes passengers and cargo, and the fuel weight, which accounts for the operational needs of the flight. This formula gives the comprehensive total weight of the aircraft at the time of takeoff, which is vital for ensuring that the aircraft operates within its weight limits as specified by the manufacturer and regulatory authorities.

Knowing the total weight before a flight is crucial for flight planning, as it directly affects performance metrics such as takeoff distance, climb rate, and fuel efficiency. By using the correct formula, pilots are able to assess whether the aircraft can safely operate given the current load and fuel conditions, ensuring a safe flight operation.