When should pilots state their position on the airport when calling the tower for takeoff?

Pilots should state their position on the airport when calling the tower for takeoff specifically when they are departing from a runway intersection. This is crucial because runway intersections can lead to confusion regarding the exact location of the aircraft on the airport and how it relates to other traffic. By explicitly stating their position, pilots provide essential information that allows air traffic controllers to ensure safe operations and manage the flow of traffic effectively.

When leaving from a runway intersection, it helps the tower understand not only that the pilot is ready for takeoff but also their precise location, thereby enhancing communication and safety. This situational awareness is vital in busy airspace or when multiple aircraft are preparing for takeoff or landing.

In contrast, communicating position at other times, such as when ready for takeoff or entering the traffic pattern, might not provide the same level of detail regarding the aircraft's specific location in relation to other aircraft and runways, which is why stating the position upon departure from an intersection is emphasized.