Calculating RVRs
At the flight planning stage is it legal under JAR rules to take forecast visibility from the "TAF "and convert it to an RVR to be used in calculating an approach minima at the destination or alternate etc using the DAY/NIGHT/FULL/LIMITED LIGHTS factors(x2, x1.5,x1.0)?
Understand that you can only factor "REPORTED" met vis for a CAT1 approach not CAT2 nor CAT3. I would think that "reported" means METAR or ATC declared visibility and not forecast visibility from the TAF. Searched through JAR but cant find a definition of "reported".
Can anyone help?