The Preliminary Report page 15 states:
In relation to Black Rock and its Lighthouse the EGPWS manufacturer informed the
Investigation that “The lighthouse obstacle is not in the obstacle database and the terrain of the island is not in our terrain database.”
and the Preliminary Report page 17:
Figure No.4 shows the Operator’s Route Guide for Blacksod (designated ‘APBSS16
(Blacksod South) Route’) which the Crew of R116 was using at the time of the accident.
The Route Guide includes an associated separate page of text setting out, inter alia,
waypoint designations and coordinates, hazards and obstacles and other general
comments. This page identified a lighthouse at Black Rock with an associated height of 310’.
However, without resort to the separate page of text, the map from the Route Guide in Figure 4 shows a spot height of 282 ft at BLKMO, which is presumably the terrain height of Black Rock (not including the height of the lighthouse)?
I attended a talk by a Honeywell representative several years ago who suggested CFIT would soon be a thing of the past because the database included every feature and building on the planet.