What glide path angle is specified for precision approaches?

The glide path angle specified for precision approaches is typically 3.0°. This angle is commonly used in most precision approach procedures, particularly those utilizing an Instrument Landing System (ILS), where the aircraft is guided down towards the runway at a controlled descent angle.

Using a glide path angle of 3.0° allows for optimal descent rates and maintaining a safe altitude above obstacles in the approach path, balancing performance and safety during the landing process. Lower or higher glide path angles can affect the aircraft's approach profile, requiring adjustments to the descent rate and might also complicate the landing procedure unnecessarily.

While other angles such as 3.5°, 4.0°, and 4.5° may be used for specific non-standard approaches or in different scenarios, they are not the standard glide path angle for precision approaches in regulated aviation environments. Therefore, the specified 3.0° is the key angle to remember for precision approaches in the context of aviation regulations and procedures.