@ LYKA,
Yeah - that was rather the point
- that is
not the way it works!
Re. yours statement that it's OK to use this method... well, sitting with 2 different airline OM's in front of me + JAR-OPS 1, and all 3 agree on the term ...converting
observed visibilty to RVR... So I fail to see how the VIZ metioned in a forecast (TREND or TAF) may be multiplied by the OPS1-factors to achieve an RVR in the planning stage.
Hope that no airlines use that procedure, as it is in direct disagreement with OPS1 (unless, of course, the local authorities have been allowed to grant an exemption)
Brgds from
Empty