What document must the pilot-in-command and dispatcher sign to certify planning is complete?

The document that must be signed by the pilot-in-command and the dispatcher to certify that the planning for a flight is complete is the dispatch release. This document is crucial because it serves as a formal authorization for the flight to proceed and includes essential information such as the flight route, fuel requirements, weight and balance information, and weather considerations. Signing the dispatch release indicates that the required pre-flight planning has been conducted thoroughly, and both the pilot and dispatcher agree on the flight's details.

In commercial aviation, this process is vital for safety and regulatory compliance. The dispatch release ensures that the aircraft is properly prepared for the journey, considering all operational factors. Proper understanding of this document's role can aid pilots in recognizing the importance of communication and cooperation with dispatchers in the operational environment.