Each dot on a VOR represents how much altitude per mile away from the VOR?

The correct answer, indicating that each dot on a VOR represents 200 feet per mile, is based on standard procedures and guidelines established for interpreting VOR (VHF Omnidirectional Range) signals when flying under instrument flight rules (IFR).

When navigating using a VOR, the dots you see on the navigation display are typically increments that represent how far you are deviating from your intended altitude path, with each dot equating to 200 feet per mile. This means that as you fly away from the VOR, if your altitude is not being maintained as expected, the system will depict this deviation in a way that allows pilots to gauge their altitude in relation to their flight path.

This specific altitude change per mile helps pilots quickly assess their vertical navigation profile and make necessary adjustments to ensure they remain on the correct altitude as they navigate. Understanding this increment is critical for maintaining safe vertical separation from other aircraft and avoiding terrain.

If a pilot needs to make altitude adjustments while approaching or departing from a VOR, knowing that each dot corresponds to 200 feet provides a clear visual reference that assists in maintaining situational awareness during flight operations.