why apply CMV if ALS OUT?

[mjkim]

As I mentioned above title, I can't figure out if the ALS out, why we need to apply CMV instead of RVR for RJFF(fukuoka airport) ?

Is there any one can help me to know the question above?

[RudderTrimZero]

Complex rules exist because no one knows what they're talking about. This whole subject is the most interpreted thing in aviation.