In TACAN mode, deviation left or right of the course is measured as how many degrees per dot?

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Prepare for the VT-IV Navigation Familiarization Exam II. Master navigation techniques with flashcards and multiple choice questions, with each answer fully explained. Boost your confidence and ace your exam!

Multiple Choice

In TACAN mode, deviation left or right of the course is measured as how many degrees per dot?

Explanation:
The deviation shown on a TACAN Course Deviation Indicator is measured in fixed increments, with each dot representing 2 degrees of course deviation. So seeing dots to one side tells you you’re that many degrees off from the selected course. For example, three dots to the left means about 6 degrees off to the left; you’d steer to recenter the CDI. This 2-degree-per-dot scale is the standard presentation on TACAN CDI displays, providing a practical balance between readability and navigational precision. The other values would not match how TACAN indicators are graduated, so they don’t fit the instrument’s normal readout.

The deviation shown on a TACAN Course Deviation Indicator is measured in fixed increments, with each dot representing 2 degrees of course deviation. So seeing dots to one side tells you you’re that many degrees off from the selected course. For example, three dots to the left means about 6 degrees off to the left; you’d steer to recenter the CDI. This 2-degree-per-dot scale is the standard presentation on TACAN CDI displays, providing a practical balance between readability and navigational precision. The other values would not match how TACAN indicators are graduated, so they don’t fit the instrument’s normal readout.

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