For effective communication, when should you request a position report on approach to SFO/ELP?

Requesting a position report when established on final is essential for effective communication with air traffic control, particularly when approaching a busy airport like San Francisco International Airport (SFO) or the planned divert to Half Moon Bay (ELP). This is the stage in the approach where the pilot's aircraft is configured for landing and is on a stable flight path toward the runway.

At this point, air traffic controllers need to know the aircraft's position to provide any necessary separation from other arrivals and departures, assess the approach speed, and confirm that the aircraft is on course. It also allows for timely updates regarding any potential changes in landing conditions or traffic, ensuring safety during the critical final approach stage.

Position reports at other stages of flight, such as at the low key position or initial fix, while useful, do not provide as clear of a situational context regarding the aircraft's readiness to land or its proximity to the runway.