Definition
A global electronic database of navigation information — including airports, runways, navaids, waypoints, airways, and instrument procedures — assembled and maintained by a database provider for use in airborne navigation systems such as FMS, GPS, and RNAV equipment. It is updated on the AIRAC 28-day cycle and is the source of the navigation data your aircraft's avionics use to compute position, routes, and procedures.
Plain English
A regularly updated, worldwide electronic library of navigation information that your aircraft's avionics read so they know where airports, runways, navaids, and procedures are.
Context Anchor
Seen in discussions of GPS units, flight management systems, and instrument procedures, especially when learning how navigation data is supplied, updated, and used in the cockpit.
Why Pilots Care
Ensures that navigation information loaded into the aircraft remains current and accurate for safe IFR operations worldwide.
Intuition Check
Do not read “worldwide” as “everything everywhere is always included and current.” Here it means the database is built to cover many regions around the world, but the pilot still must check that the needed area and procedure are available and up to date.
Example Sentence 1
Before the flight, the crew confirmed the FMS was loaded with the current cycle of the worldwide airborne navigation database.
Example Sentence 2
During preflight, the pilot confirmed that the worldwide airborne navigation database contained the correct runway data for the destination airport.