What is the width of the localizer signal in degrees?

The localizer signal is an essential component of the instrument landing system (ILS), which provides guidance to pilots during the approach phase of flight. The width of the localizer signal is designed to help pilots accurately align with the runway centerline.

The correct answer indicates that the width of the localizer signal typically ranges from 3 to 6 degrees. This range allows for a precise approach path while providing some margin for pilot error and varying wind conditions. A signal width of 3 to 6 degrees ensures that pilots can capture and maintain the localizer signal effectively, thus improving safety during landing operations.

Understanding this width is crucial for pilots as it informs them about how much lateral deviation from the runway centerline they can have while still receiving a valid signal. If the signal were wider than this specified range, it could lead to potential misalignment with the runway and increased risk during landing.