The required range for VOR CDI from center to the last dot on either side is?

The required range for the VOR Course Deviation Indicator (CDI) from the center to the last dot on either side is indeed 10 to 12 degrees. This information is critical for pilots as it helps in interpreting the course deviation indicators effectively while navigating. The CDI indicates the aircraft's position relative to the desired course, and knowing that each dot represents a specific degree of deviation is essential for precise navigation.

When the CDI needle is centered, it shows that the aircraft is on the intended course. As the aircraft deviates from this course, the CDI needle moves toward the side it is deviating from. The thresholds of 10 to 12 degrees ensure that pilots can accurately assess how far off course they are and make necessary corrections in navigation. Understanding this range aids in maintaining situational awareness and ensures accurate navigation during instrument flight operations.