What is required for pilot compliance during a departure clearance?

Compliance during a departure clearance primarily focuses on ensuring that pilots adhere to established protocols and procedures that are vital for maintaining safety and efficiency in air traffic operations. Following written departure procedures is crucial as these procedures are designed to guide pilots during the initial phases of flight, helping to prevent conflicts with other aircraft and ensuring compliance with air traffic control (ATC) instructions.

Written departure procedures typically include specific routing, altitude restrictions, and any required communication protocols with ATC. By following these procedures, pilots can safely navigate from the departure airport into the airspace without posing a risk to themselves or to other air traffic. This adherence not only helps in maintaining order and safety but also facilitates smoother operations within the airspace system.

The other options, while they may influence certain aspects of flight operation, do not directly address the specific requirement for compliance during departure clearance as effectively as written departure procedures. Weather considerations, flight routes for the destination, and requesting clearance from the destination airport can be essential in planning and executing a flight, but they do not substitute for the necessity of following established departure procedures.