Which two centers can issue ALNOTs?

The correct response identifies that Air Route Traffic Control Centers (ARTCC) and Flight Service Stations (FSS) have the authority to issue ALNOTs, or Alert Notices.

ALNOTs are issued when an aircraft is overdue, missing, or has failed to arrive at its planned destination, prompting search and rescue operations. The ARTCC plays a critical role in air traffic management, monitoring aircraft movements across defined airspace, and it can initiate an ALNOT when an aircraft does not arrive as expected.

FSS, on the other hand, serves as a vital resource for pilots, providing weather briefings and flight planning assistance. When an aircraft fails to arrive and communication with it cannot be established, FSS also has the capability to issue an ALNOT to alert appropriate search and rescue agencies.

The other options involve entities that either do not have the direct authority to issue ALNOTs or are not specific to the functions typically associated with this kind of notification, which is primarily the role of ARTCC and FSS. This alignment ensures that the responsibility of issuing ALNOTs is handled by designated facilities trained in monitoring and managing flight activity promptly and effectively.