What is the glide slope width at full deflection?

The glide slope width at full deflection is characterized as the total angle within which a pilot can maintain an effective path to the runway when approaching for landing. This angle is crucial for ensuring that aircraft can align with the runway slope while descending safely.

The correct choice of 1.4° total signifies that this is the standard width of glide slope indication within which the aircraft is guided. This width ensures a balance between providing sufficient guidance and allowing the pilot room to make adjustments. When the glide slope is fully deflected, it indicates that the aircraft is on a course that may require immediate correction to stay on a safe descent path.

In this context, the other options, while close, either exceed or fall short of the standard glide slope indication. These incorrect choices would not comply with established aviation guidelines or could lead to different operational challenges during approach. Understanding the precise measurement of glide slope width is essential for pilots to ensure safety and precision during the critical phases of landing.