Multiple choice

In a 4 dot CDI, each dot represents

  1. 1 degree

  2. 2.5 degrees

  3. 3 degrees

  4. 4.5 degrees
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In a standard 4-dot Course Deviation Indicator (CDI) used with VOR/ILS navigation, each dot represents 2.5 degrees of deviation from the selected course. Full deflection (4 dots) indicates 10 degrees off-course, providing pilots with precise lateral guidance information.

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