When is weight and balance data typically verified by pilots?

Weight and balance data is typically verified by pilots before each flight to ensure that the aircraft is within its operational limits for safe performance. This verification process involves checking the current weight of the aircraft, including all cargo, passengers, and fuel, against the aircraft's weight limits as specified in the aircraft's flight manual. Ensuring the balance of the aircraft is also crucial because an improperly balanced aircraft can lead to handling difficulties or even accidents.

This pre-flight verification is essential not only for adherence to safety regulations but also for optimal aircraft performance. Understanding the load distribution ensures that the center of gravity is within the specified limits, which can significantly impact flight characteristics such as stability and maneuverability. Therefore, addressing weight and balance before the flight is a critical step in the flight preparation process.