A request originated by a flight service station (FSS) or an air route traffic control center (ARTCC) for an extensive communication search for overdue, unreported, or missing aircraft.
Source FAA Pilot/Controller Glossary · checked 2026-08-25
A request originated by a flight service station (FSS) or an air route traffic control center (ARTCC) for an extensive communication search for overdue, unreported, or missing aircraft.
Source FAA Pilot/Controller Glossary · checked 2026-08-25