And – yet again – not just follow the magenta line.
I don't want to get into a full blown automation conversation, but I did point out a potentially salient fact pretty early on on the subject of 'magenta'. Black rock was a waypoint, so would have been displayed as a magenta 'star' shape on the route, on the navigation display, with its name alongside. If the crew had the Wx RADAR in mapping mode, the return for the rock would also have been magenta. If the range selected was large enough to include Blacksod (the destination), there is a very good chance that the radar return would have been small and therefore masked within the star shape. If the range had been scaled down the radar return would have been larger and would have 'grown' outside the confines of the star. So, questions around the use of Wx Radar are likely to be far more relevant than what was in the EGPWS database - which is largely a red herring, as rotorspeed implies.