What is the visibility requirement for ELPs (Tower or RSU)?

The visibility requirement for Enhanced Low Visibility Procedures (ELPs), particularly when operating under a control tower or Remote Sensing Unit (RSU), is indeed 3 statute miles (sm). This requirement is grounded in ensuring that pilots have sufficient visual reference to navigate safely and perform necessary maneuvers during takeoff and landing phases, especially in conditions where visibility may be limited.

Having a visibility of 3 sm allows for better situational awareness and helps to mitigate the risks associated with low visibility operations. It ensures that pilots can effectively see and avoid other aircraft and ground obstacles, enhancing safety during critical operational phases.

Stricter visibility requirements are often put in place to ensure safe operations in challenging weather conditions, thus making the 3 sm threshold a pivotal requirement for ELPs in controlled environments.