Definition
The primary navigation display shown on the Multi-Function Display (MFD) of a glass cockpit, presenting a top-down map view that updates continuously to show the aircraft's current position, track, and surrounding terrain, airspace, navaids, airports, and flight plan route.
Plain English
The main map screen on the MFD that shows where the airplane is right now, where it is going, and what is around it, with the picture refreshing as the aircraft moves.
Context Anchor
Seen when using a glass-cockpit multi-function display and moving through its navigation page group.
Derivation
"Default" means the page the system shows automatically unless the pilot selects a different one. "Moving map" describes the live, scrolling map display that follows the aircraft's position in real time. Together: the map page the MFD opens to on its own.
Why Pilots Care
It supplies immediate situational awareness of position, route progress, and nearby airspace or terrain, reducing the chance of navigation errors.
Intuition Check
Do not read “default” here as a fault or failure. It means the normal screen the system uses unless another page is selected.
Example Sentence 1
After completing the engine start checklist, the pilot glanced at the default moving map page to confirm the flight plan route was loaded correctly.
Example Sentence 2
When cleared direct to the airport the pilot returned to the default moving map page to monitor progress along the magenta line.