What does the course deviation indicator (CDI) in GPS show?

What does the course deviation indicator (CDI) in GPS show?

• A. Angular distance off course
• B. Distance off course in miles
• C. Current course heading
• D. Ground speed

Answer: (B)

The course deviation indicator (CDI) in a GPS system is specifically designed to show how far off course an aircraft is, measured in terms of angular distance. However, it is essential to understand that this angular distance is typically associated with how much deviation from a specific course line the aircraft has. This deviation is often represented visually and serves as a guide to help the pilot understand their position in relation to the intended navigational path. The correct representation of how far off track, in terms of visual feedback, leads to the interpretation that the CDI provides data showing the angular distance away from the selected course. It's important to note that while this may include a representation of distance in some systems, the primary function of a CDI is to indicate angular deviation and ultimately assist a pilot in corrective actions when navigating. As a result, the interpretation of the CDI is best understood through its primary function of showing how far off course the aircraft is in relation to a predetermined navigation path.

The course deviation indicator (CDI) in a GPS system is specifically designed to show how far off course an aircraft is, measured in terms of angular distance. However, it is essential to understand that this angular distance is typically associated with how much deviation from a specific course line the aircraft has. This deviation is often represented visually and serves as a guide to help the pilot understand their position in relation to the intended navigational path.

The correct representation of how far off track, in terms of visual feedback, leads to the interpretation that the CDI provides data showing the angular distance away from the selected course. It's important to note that while this may include a representation of distance in some systems, the primary function of a CDI is to indicate angular deviation and ultimately assist a pilot in corrective actions when navigating. As a result, the interpretation of the CDI is best understood through its primary function of showing how far off course the aircraft is in relation to a predetermined navigation path.