When aircraft elect to take a delay on the ground, departure clearances should be issued in what order?

• A. Order of arrival at the runway
• B. Order of pilot request
• C. Order originally made, if practical
• D. Order of aircraft size

Answer: (C)

Issuing departure clearances in the order originally made, if practical, ensures that the sequence of aircraft is maintained as closely as possible to when they first requested departure. This method respects the flow of air traffic management and helps prevent confusion that might arise from changing the order of departures after the requests were initially made.

By adhering to the original sequence of requests, Air Traffic Control (ATC) provides a predictable and systematic approach to issuing clearances. It also enhances efficiency since pilots expect their turn to align with when they requested clearance. This order reinforces the concept of first-come, first-served while still allowing for adjustments as needed for safety and operational considerations.

Other ordering methods, such as by pilot request or size of aircraft, can introduce complexities that may disrupt traffic flow or lead to longer wait times for some aircraft. Maintaining the initial order reduces the risk of mistakes and confusion in busy airport environments.