Where is the PMU located in the T-6 aircraft?

The Power Management Unit (PMU) in the T-6 aircraft is located underneath the engine, specifically in the accessory compartment. This placement is crucial because the PMU is responsible for managing engine performance, including fuel metering and power output regulation, which must be closely integrated with the engine systems. Its position allows it to effectively monitor and control various engine parameters directly, ensuring optimal performance while also protecting the engine from potential damage due to operation outside of safe limits.

The other locations suggested do not house the PMU due to the specific functions it performs that necessitate proximity to the engine. For instance, being in the cockpit would limit the PMU's operational effectiveness as it would not be able to interact with the engine components directly. Similarly, placement in the tail section would be impractical for the control of engine performance and could result in significant delays in system responses. The option suggesting placement in the cockpit under the instrument panel is also incorrect as it is designed primarily for instrumentation and pilot controls rather than for housing critical engine management systems like the PMU.