Who primarily assumes responsibility for a sector after a transfer of position in air traffic control?

The relieving specialist is the individual who takes over the responsibilities of an air traffic control sector during a position transfer. This transfer involves a thorough handover where the outgoing controller ensures that the relieving specialist understands the current traffic situation, any relevant procedures, and any immediate issues that might affect the safe and effective management of air traffic in that sector.

This process is essential for maintaining safety and continuity in air traffic control operations. The relieving specialist is expected to be fully aware of their responsibilities and the status of traffic to manage the sector effectively. They are the ones in command of the airspace and responsible for providing air traffic services, ensuring safety, and coordinating with pilots and other controllers.

The other options do not assume the primary responsibility for the sector. The supervisor oversees the traffic flow and assists in managing controllers but does not take on the day-to-day responsibilities of a specific sector. The pilot in command is responsible for the safe operation of their aircraft but is not involved in air traffic control responsibilities. The previous controller, while leaving relevant information, no longer retains responsibility for the sector once the transfer occurs.