What is one of the key benefits of using "DME" (Distance Measuring Equipment)?

The key benefit of using Distance Measuring Equipment (DME) is that it provides pilots with precise distance information to airports or checkpoints. DME operates by determining the distance between the aircraft and a ground station based on the time it takes for radio signals to travel to the DME station and back. This accurate distance measurement is crucial for pilots to navigate effectively, plan for approaches, and maintain situational awareness.

Having precise distance information significantly improves flight safety and efficiency, allowing pilots to make informed decisions about when to initiate descents or when to hold at specific points. This capability is especially important in instrument flight rules (IFR) conditions, where visibility may be limited, and accurate distance information is critical to safe navigation.

The other options involve features not directly associated with DME. Visual navigation and automated altitude adjustments are typically handled by other systems or methods, while communication with ground control is managed through different radio systems, not DME.