Aerial Repair Drone

From Wikitroid, the Metroid wiki

Aerial Repair Drones are a version of Repair Drone modified for flight. They are used to perform maintenance and repair work in hard to reach areas of SkyTown. They are replaced every 200 years. They normally don't notice you, even if you get between them and what they are fixing. When you first arrive at Skytown, a few can be seen repairing Ghor's battle suit.