Where is the APU located within the aircraft?

The Auxiliary Power Unit (APU) of the A320 is located in the tail section of the aircraft. This positioning is advantageous for several reasons. One key reason is that the APU generates noise and exhaust that are best situated away from passenger areas to minimize any impact on comfort or safety. Additionally, having the APU in the tail helps to optimize space in the rest of the fuselage and keeps critical systems centralized for maintenance accessibility.

The other locations listed, such as the nose section and wing section, are not practical for the APU due to space constraints and the need to keep the aircraft systems logically organized. The center fuselage is primarily devoted to passenger cabins and cargo holds, which would conflict with the operational needs of an APU. Therefore, having the APU in the tail section is a design choice that enhances both performance and operational efficiency.