Just for reference, does anyone know what the size of the EGPWS terrain and obstacle databases are?
I'm seeing NAV memory sizes quoted here from 400K to 10MB. But I seem to recall that some EGPWS systems use removable Compact Flash (CF) cards, which could hold as much as 256 GB (more for recent CF versions). So it would seem that the modern solution to NAV memory limitations would be to offer upgradable storage. Since this media is already in use for terrain data, the issues of certification and firmware to read it have already been solved.
