Which fueling method is commonly used for smaller aircraft?

The method of over-the-wing connections is frequently employed for fueling smaller aircraft due to its simplicity and effectiveness. This approach involves fueling the aircraft from above the wings, which allows for easy access and visibility for the ground crew, ensuring safety and efficiency during the fueling process.

In the context of smaller aircraft, this method is advantageous because it typically requires less infrastructure compared to larger fueling systems, which may not be practical or necessary for smaller planes. The over-the-wing technique also provides a level of control for the personnel involved, as they can monitor the fueling process closely as it occurs from above.

In comparison, while underground piping and single point connections are prevalent in larger operations for efficiency and safety, they are less commonly utilized for smaller aircraft due to the required infrastructure and equipment. Direct fueling from tank trucks could be employed, but over-the-wing connections remain preferred for their convenience and safety in servicing these types of aircraft.