What should pilots contact before starting engines during gate hold procedures?

Before starting engines during gate hold procedures, pilots should contact ground control. Ground control is responsible for managing the movement of aircraft on the ground, ensuring that taxiing and engine start procedures are conducted safely and efficiently. When a pilot is at the gate, they need clearance from ground control before starting the engines to ensure that the airport's ground operations are coordinated and that there are no conflicts with other aircraft or operational activities.

This procedure is crucial for maintaining safety and adherence to air traffic control protocols, as starting the engines without proper authorization can lead to potential hazards on the ramp or runway. Ground control will provide the necessary instructions for when and how to proceed, ensuring that the aircraft is ready for departure in an orderly manner.