What does the term “single-point fueling” refer to in context with the APU?

The term "single-point fueling" in the context of the APU refers to a system that enables fuel servicing through a single access point, eliminating the need to access fuel tanks separately. This streamlined method offers greater efficiency and convenience, particularly for larger aircraft like the C-5. By utilizing a single point for fueling, ground crews can minimize the time and effort required for refueling operations, which is an essential consideration in military and commercial aviation.

This process helps enhance safety by reducing the potential for spills and leaks that can occur when accessing multiple tanks. Additionally, it simplifies the logistical challenges of refueling in various operational environments, making it a critical feature for aircraft designed for quick turnaround times.