Originally Posted by
john_tullamarine
avoid terrain using the terrain function
That's fine if there's one gynormous hill in an otherwise flat landscape .. the reality is that a pilot-interpreted radar image is of considerably less use than the Eyeball Mk 1 VMC terrain avoidance .. which, likewise, is only much use for the odd significant obstacle in an otherwise benign landscape.
Actually, I am not talking about using the weather radar terrain function. I am talking about using the EGPWS terrain function which paints a nice picture of the terrain around you and its altitude relative to you.
This is for the situation suggested where you had an engine failure and you are past the turning point for the engine out procedure and in high terrain.