RVR vs CMV
To my humble aviation knowledge, RVR is derived from RVR measuring equipment, and the CMV can be converted from a reported visibility.
Converted Meteorological Visibility (CMV). A value (equivalent to an RVR) which is derived from the reported meteoro-
logical visibility, as converted in accordance with the requirements in this subpart.
But what I am also trying to find out for a while is, why is CMV only used in conjunction with CAT C & D aircraft?
Anyone?