George Patterson wrote:
Doug wrote:


Also, I think Marker Beacons are nice to have,
though not legally required for ILS's. It is good to have that aural
warning at the middle marker.


IIRC, there are also approaches that have lower minimums for the ILS
with an MBR than without.

It used to be that there was a penalty for no middle marker. This was
done away with almost a decade ago. The FAA doesn't take markers
seriously anymore. Unless it's a compass locator with some other
navigational function, they're pretty much ignored.