What is involved in connecting the aircraft during the preparation for departure?

Connecting the aircraft during preparation for departure primarily involves ensuring that the tractor and tow-bar are correctly attached to the aircraft. This procedure is crucial for safe towing operations, as it allows ground crews to move the aircraft from the gate to the runway or to another position without incident. Proper connection also helps to prevent any damage to the aircraft during this process, which is essential for the safety and efficiency of ground operations.

While the other options may play important roles in various aspects of airport operations, they do not pertain specifically to the task of connecting the aircraft. For instance, installing bin webbing relates more to securing cargo within the aircraft, delivering NOTOC (Notice to Captain) pertains to communication regarding dangerous goods or special instructions for the flight, and securing wheelchairs is part of passenger assistance rather than aircraft preparation. Each of these functions is important in its own right, but confirming the tractor and tow-bar connection is directly relevant to the safe movement of the aircraft itself during departure preparations.