That's the problem with some aircarriers...they insist that pilots go around when the aircraft is CLEARLY safe to land.
GPWS/EGPWS do indeed malfunction from time to time....just how is it safer to approach an airfield (and land) with the terrain c/b pulled, yet at the same time, g/around when the system malfunctions?
More 'do as the box says' rather than 'use your brain'.
