Originally Posted by
aterpster
Bloggs,
What he is saying is correct. Obstacles have been added with better surveys and better data subsequent to the inception of EGPWS. And, there is a "peaks and obstacles" option for additional $$$$ that provides greater accuracy and fidelity of terrain near airports where RNP AR approaches are in use.
No, what he is saying is not correct. What he said was that with EGPWS some obstacles and terrain started giving warnings and then had to be entered into the database. If they weren't in the database then they can't have given warnings because the EGPWS wouldn't have known about them. Whatever Underfire's point is, he is not expressing it well. Maybe he meant that obstacles and terrain that
were already in the database started giving warnings with EGPWS that weren't given with GPWS and that the system logic had to be adjusted to allow for them, but that's not what he said.