What does GSU stand for in the context of aircraft maintenance?

In the context of aircraft maintenance, GSU stands for Ground Support Unit. This refers to the equipment and personnel that provide essential support services for aircraft while they are on the ground. These services can include providing power supply to the aircraft, refueling, and other maintenance functions necessary for the safe and efficient operation of the aircraft before it takes off or after it lands. Ground Support Units are crucial for ensuring that all operations related to the aircraft are conducted smoothly and safely, emphasizing the importance of maintaining functionality before and after flights.

The other options do not specifically relate to the established terminology in aircraft maintenance. For instance, Ground Safety Unit and General Service Unit might pertain to broader safety or service aspects but lack the direct connection to the maintenance and operational support provided by Ground Support Units. Ground System Unit may suggest a focus on systems technology, but this designation is not commonly used in the context of general aircraft maintenance support.