When a student points out an aircraft that is climbing slowly, what must they include as pertinent information?

When a student observes an aircraft that is climbing slowly, it's crucial to communicate the concept of a delayed climb as pertinent information. This detail indicates that the aircraft is not achieving its expected rate of ascent, which can impact air traffic management and separation criteria. Understanding whether an aircraft is experiencing a delayed climb has operational implications, as it may require adjustments in altitude clearance or consideration of other traffic in the vicinity.

While expected altitude, current speed, and flight path are related factors, they do not encapsulate the critical aspect of the aircraft's climbing behavior. The focus on the delayed climb alerts controllers to potential issues that could require immediate attention, aiding in maintaining safety and efficiency within the airspace.