Which controller is responsible for verifying the assigned altitude and Mode C on initial contact?

The radar controller is the individual responsible for verifying the assigned altitude and Mode C on initial contact. This verification is crucial as it ensures that aircraft are operating at their correct altitudes and that the transponder information (Mode C) is accurate, which helps in maintaining safe separation between aircraft and effectively managing air traffic.

Upon initial contact, the radar controller checks that the pilot is responding correctly and is following the previously assigned flight level. This process involves ensuring that the aircraft's altitude reporting is synchronized with its actual altitude, which is represented by the Mode C information transmitted by the aircraft's transponder. This responsibility is vital for safe and efficient airspace management, highlighting the critical role of the radar controller in maintaining situational awareness and ensuring operational safety.