When should you issue an approach clearance?

Issuing an approach clearance after the aircraft is established on the route is correct because it ensures that the aircraft is in the appropriate position to safely begin the approach. This clearance is typically provided once the aircraft has been positively identified, is within the correct airspace, and is in a stable flight configuration, which allows for an efficient transition into the approach phase.

This approach allows controllers to manage air traffic effectively while ensuring that pilots have the necessary information and time to prepare for their approach. Additionally, being established on the route means that the aircraft is in a position where it can follow the approach path without issues, leading to a safer operation overall. Clear communication during this phase is essential for maintaining safety and coordination between the controller and the pilot.