What is the course width of the localizer at the runway threshold?

The correct answer regarding the course width of the localizer at the runway threshold is 700 feet. This measurement is critical for pilots to understand, as the localizer provides lateral guidance for aircraft when being vectored to the runway during the final approach phase of flight.

At the runway threshold, the localizer signal is designed to be 700 feet wide, ensuring that approaching aircraft have a clear and consistent pathway to align with the runway centerline. This width allows for a margin of error, which helps maintain situational awareness and safety during the approach, particularly in conditions of reduced visibility.

Understanding the course width is important for pilots when preparing for an instrument approach and maintaining orientation relative to the runway. Awareness of the localizer's characteristics, including its width, is essential for effective and safe navigation, especially during critical stages of flight.