How should controllers handle an aircraft that is reassigned an approach to a different runway?

Informing the aircraft of the new instructions is essential when an aircraft is reassigned an approach to a different runway. Clear communication ensures that the pilot understands the updated landing procedure, which is crucial for maintaining safety and efficiency in air traffic management. This instruction enables the flight crew to make necessary adjustments to their approach, including alterations in altitude, speed, and final approach path, thus mitigating the risk of confusion and potential conflict with other aircraft.

Effective communication is a cornerstone of air traffic control, as it allows for a coordinated response to changing conditions. Controllers must provide timely and precise updates to ensure that pilots receive the most current information related to their flight operations. This helps maintain situational awareness for both the pilots and air traffic controllers.

In contrast, reverting back to standard operating procedures, notifying all nearby aircraft of the change, or maintaining the original instructions unless directed otherwise may not address the immediate needs of the reassigned aircraft effectively. These actions could lead to a breakdown in communication, misunderstandings, or even potential safety hazards if the reassignment is not appropriately relayed to the aircraft in question.