Which switch allows the pilot to select a navigation mode?

The switch that allows the pilot to select a navigation mode is crucial for ensuring that the aircraft can safely and effectively utilize its navigation systems. In the context of flying the C-17, selecting the correct navigation mode is vital for the aircraft's operation, especially during various phases of flight such as takeoff, cruising, and landing.

In this case, the identified switch as the correct answer is designed specifically for navigation mode selection, which typically integrates various navigational tools and systems within the aircraft. This switch enables the pilot to toggle between different navigation sources—such as GPS, inertial navigation, or TACAN—ensuring that the aircraft is guided accurately along its intended flight path.

Understanding how this switch functions, including its placement and operational feedback, is important for pilots during both normal and emergency procedures. The ability to quickly switch between navigation modes can be pivotal when dealing with unforeseen circumstances or system failures.