Under what conditions can an EGPWS terrain warning be ignored?

The scenario in which an EGPWS (Enhanced Ground Proximity Warning System) terrain warning can be safely ignored is when pilots can visually confirm obstacles during Day VFR (Visual Flight Rules) conditions. This is because VFR conditions rely on the ability to see and avoid obstacles visually. If pilots have a clear view of the terrain and obstacles around them and can maintain safe separation from them, the terrain warning can be disregarded.

During Day VFR, the visibility is typically enhanced, allowing pilots to use their eyesight to assess their environment effectively. However, relying solely on the EGPWS warnings without visual confirmation could lead to dangerous situations if the terrain or obstacles are not accurately represented on the system due to factors like reflection or inaccurate data. Therefore, visual confirmation plays a crucial role in pilot decision-making in such situations.

Other conditions mentioned, such as flying at a higher altitude or being above 5,000 feet, do not automatically provide a safe clearance from obstacles, as terrain can vary dramatically even at higher altitudes. Night VFR presents additional challenges since visibility is significantly reduced, making visual confirmation difficult and less reliable, thus not a safe context for ignoring EGPWS warnings.