What should be communicated to the aircraft when requesting a specific altitude?

When requesting a specific altitude, it is essential to communicate the requested altitude and any subsequent changes to the aircraft. This clear communication ensures that the pilots are aware of their altitude assignments and can adjust their flight path accordingly. It allows them to operate safely within the airspace and maintain proper separation from other aircraft.

Providing only the altitude changes as they occur would likely lead to confusion, as pilots need to understand their full clearance context, including any previous altitudes and the specific altitude they are being cleared to. Similarly, focusing solely on the estimated time of arrival or the initial clearances does not offer the complete information necessary for safe flight management.

By fully detailing the altitude request and any changes, you maintain a clear and effective line of communication, which is vital in a non-radar environment where situational awareness is primarily developed through verbal coordination.