Final answer:
The flight deck is always the preferred area to load/download aircraft.
Step-by-step explanation:
The flight deck is always the preferred area to load/download aircraft. The flight deck, also known as the cockpit, is where the pilots operate the aircraft. It is equipped with the necessary controls, instruments, and systems to perform various tasks during flight, including loading and downloading.
In contrast, the air terminal is the passenger facility where people board and disembark from the aircraft. The line refers to aircraft parking positions on the ground. Ground resonance, on the other hand, is a vibration phenomenon that occurs in helicopters and can cause instability during landing or takeoff.
Therefore, the flight deck is the specific area where aircraft loading and downloading takes place.