Not nice, but then flying metros around, you often got spurious GPWS terrain warnings due to many fields not in the database, usually below 500 feet on approach. The work around used to be the 'terrain inhibit' button going into many of these types of places. You knew you'd get spurious warnings. I think they call that normalised deviation.
A tragic day, but one doomed to repeat. With the emphasis now on regulation and tick box arse covering vs training and common sense, I don't see any end in sight.
I can't believe it's been ten years.