crab, are crew trained to appreciate that EGPWS is not approved for navigation? Or is that fact passed over and they learn to trust it more than perhaps they should?
Good question nooby and I think it will come back to the reliance on automation again - we get given the new gucci kit and don't expect it to go wrong.
The main difference between the Mk 3 and the Mk 3A Sea King was the AP - the Mk 3 was single channel, steam driven and it's failure modes could easily put you in the water so the crews watched it like a hawk. The 3A had a duplex digital AFCS which hardly ever went wrong, had benign failure modes and was very good so crews trusted it - sometimes more than they should have.
The S92 is in another dimension as far as capability goes so it is very easy to see how complacency can creep in.