How can GNSS aircraft be cleared off an airport?

Clearing GNSS-equipped aircraft off an airport using point-to-point navigation with published navigational aids is correct because it leverages established routes and procedures that enhance safety and efficiency in air traffic management. Published navigational aids ensure that both pilots and air traffic controllers have common reference points that they understand and can rely on, which is essential for maintaining safe separation between aircraft and for efficient flow in the busy airport environment.

Point-to-point navigation facilitates precise routing and helps in minimizing the chance for error, as these routes are designed for optimal traffic flow and compliance with airspace regulations. This method is especially beneficial in environments where GPS might not provide sufficient accuracy or reliability alone, as it ensures adherence to pre-determined paths that have been vetted for safety.

Using standard routing only with no exceptions might limit operational flexibility and could create delays, while clearing aircraft using any available GPS coordinates may introduce safety risks if those coordinates do not align with established flight paths. Lastly, requiring a flight plan before clearance may not be necessary in all cases; some departures can be conducted under known procedures without filing a detailed plan in advance. Thus, the point-to-point method aligns with best practices for managing aircraft departures in a safe and orderly manner.