Which type of radar displays may local controllers use to provide radar advisories?

Local controllers may use certified radar displays to provide radar advisories because these systems meet specific regulatory and safety standards set by aviation authorities. Certified radar provides accurate and reliable information that is crucial for ensuring the safety of aircraft operations in the terminal area.

This type of radar is specifically designed for air traffic control purposes, featuring capabilities that support the effective monitoring and management of air traffic, including target tracking, conflict resolution, and providing pertinent information to pilots. The certification process ensures that the radar systems have been rigorously evaluated and deemed dependable for air traffic management.

The other types of radar displays, such as uncertified, visual, or enhanced, do not fulfill the stringent requirements for safety and accuracy necessary for providing radar advisories to aircraft. Uncertified displays might lack the operational reliability needed for safety-critical functions, while visual displays may not provide the level of detail required for effective air traffic management. Enhanced radar systems, although potentially useful in providing additional information, may still rely on certified radar as the foundational method for issuing advisories.