Originally Posted by
supersix-4
how about: You are outside of the FAF and WX goes below min.?
121 world- You continue the approach to the FAF. If it's still below minimums at that point, you go missed and spin out to the hold... Hopefully the controller will report better conditions as you approach the FAF. (It's amazing how the RVR magically adjusts itself at some airports).
91 world- fly the approach.