How far should ALNOT be issued to ARTCCs from the last reported position?

The issuance of ALNOT (Alert Notice) to ARTCCs from the last reported position is set at a distance of 50 miles. This guideline helps ensure that all pertinent air traffic control facilities are informed of a potential search and rescue operation without unnecessarily overextending the area, which could strain resources and complicate coordination.

By limiting the ALNOT area to 50 miles, air traffic controllers can efficiently manage their focus on a defined area where the aircraft is most likely to be found, while still ensuring that adequate coverage is maintained. This approach strikes a balance between prompt communication of potential emergencies and effective resource management, aligning with the protocols designed to enhance aircraft safety and response capabilities.