What should be confirmed before ignoring an EGPWS terrain warning?

Before disregarding an EGPWS (Enhanced Ground Proximity Warning System) terrain warning, it is crucial to have positive assurance that the aircraft is clear of obstacles and in the correct configuration. This is because the EGPWS is designed to provide warnings based on the terrain ahead and the aircraft's current position, altitude, and configuration. Ignoring this warning without confirming that the aircraft is safely configured and free from obstacles could lead to dangerous situations or collisions with terrain.

Having a clear understanding of the surrounding environment and ensuring that the aircraft is in the right configuration (such as the appropriate gear and flap settings) is essential for maintaining safety during flight operations. This check helps ensure that the aircraft can safely navigate its flight path without encountering unanticipated hazards.

Other choices like confirming visual assurance of the runway location or understanding GPS coordinates do not provide the comprehensive situational awareness needed to safely disregard a terrain warning, as they do not guarantee that the aircraft is adequately cleared of all obstacles in its immediate path.