Definition
A digital file stored in an avionics system that contains the navigation, terrain, obstacle, airport, or chart information the system needs to function. Electronic databases must be kept current through scheduled updates, since the equipment relies on them to display accurate information and to support certain types of flight operations.
Plain English
It is the stored set of digital information — like nav data, airports, and terrain — that the cockpit displays use to show you the right picture. If the file is out of date or corrupted, the displays may show wrong or incomplete information.
Context Anchor
Seen when using an electronic flight display, moving map, or aircraft navigator, especially when checking whether stored flight information is available and current.
Derivation
“Electronic” comes from “electron,” connected with electrical devices. “Database” means an organized base or store of data. Together, the term points to stored information used by electronic equipment, not information the airplane is sensing live at that moment.
Why Pilots Care
A corrupted or outdated electronic database removes accurate navigation references from the displays, forcing the pilot to fall back to paper charts or raw instrument data under higher workload.
Intuition Check
Do not assume an electronic database is the same as a live sensor. It is stored information; it must be available, correct, and current to be useful.
Example Sentence 1
Before the IFR flight, the pilot verified the electronic database in the GPS was current for the 28-day cycle.
Example Sentence 2
After a software glitch, the crew reloaded the electronic database to restore the moving map display.