Which document should pilots accurately cross-check for weight and balance calculations?

The Pilot Operating Handbook (POH) is the primary document that provides essential information about the aircraft's performance, operating limitations, and specifications, including weight and balance data. Pilots use the POH to ensure their calculations for weight and balance are accurate, which is crucial for safe flight operations. The document includes specific details on the aircraft's maximum weight limits, center of gravity range, and how to calculate the weight of various loads, such as passengers, cargo, and fuel.

Using the POH ensures that pilots are referring to the most reliable and aircraft-specific information for their calculations. This is important because weight and balance can significantly affect an aircraft's performance, including stability, control, and overall safety during flight. Therefore, the POH is the necessary resource for these calculations, reinforcing the importance of using this document for accurate and safe flight operations.