Definition
A request originated by a Flight Service Station (FSS) or an Air Route Traffic Control Center (ARTCC) for an extensive communication search for an overdue, unreported, or missing aircraft. An Alert Notice is issued when an aircraft on a flight plan has not arrived at its destination within a specified time and cannot be reached by normal communications, triggering coordinated efforts to locate it before search and rescue operations are launched.
Plain English
An official message sent out when an aircraft on a flight plan is overdue or missing, asking everyone in the system to help find it by checking their records and trying to make contact.
Context Anchor
Seen in flight plan, overdue aircraft, and search-and-rescue procedures.
Derivation
From 'alert' (Italian 'all'erta', meaning 'on the watch') and 'notice' (a formal notification). The term simply names what it does: a formal notification that puts the aviation system on watch for a specific aircraft.
Why Pilots Care
It triggers coordinated search efforts that may involve other pilots or temporarily restrict airspace.
Grounding Statement
If an aircraft is expected somewhere and no one can confirm where it is, an Alert Notice helps start the official effort to find it.
Intuition Check
An Alert Notice is not just a casual warning or general heads-up. In aviation, it is a formal notice connected with an overdue, unreported, or missing aircraft.
Example Sentence 1
When the Cessna failed to arrive at its destination thirty minutes after its ETA and could not be raised on the radio, the FSS issued an Alert Notice.
Example Sentence 2
Pilots on the frequency heard the Alert Notice and began scanning for the missing airplane.