What is indicated with an amber H when performing a DME hold?

When performing a DME hold, an amber H indicates the hold status. This designation is crucial for understanding that the navigation system is actively maintaining the DME hold mode, which means that the aircraft's position is being referenced to a designated DME (Distance Measuring Equipment) fix.

This status is particularly important for pilots as it communicates that the system is temporarily capturing the distance from the DME station, allowing for precise navigation and distance calculations from that point. The amber color is utilized to alert pilots that while the system is operational in its hold state, they should be aware of the situation and ensure that their navigation is aligned with their intended course.

This clarification of hold status is essential for effective situational awareness during flight operations.