What is the relationship between weight and gravity when discussing an aircraft?

Weight is defined as the force exerted by gravity on an object. Therefore, it is directly related to the local gravitational field strength. When discussing aircraft, weight varies based on the gravitational acceleration at that specific location. For example, on Earth, gravity provides a consistent force of approximately 9.81 m/s². If the aircraft were on a different celestial body, such as the Moon, where gravity is weaker (about 1/6th that of Earth's), the weight of the aircraft would significantly decrease even though its mass remains constant. This correlation emphasizes that weight is not a fixed quantity but rather a function of the gravitational force acting on that mass at a given location, making the understanding of this relationship essential for flight operations and calculations.