Same concept as simultaneous independent parallel ILS approaches except
with reduced widths. The theory is that the rapid update PRM radar makes
up for that, combined with the fact you have to be trained to
participate.

Riddler wrote:

How much seperation do you get on final? Is there a standard? I know
that the runways are like 4200 feet or closer together... and I know
that seperation before and while turning to final is something like 3
miles or 1000 feet vertical... but is there any separation criteria
while going down the glidepath itself?

Thanks