Hmm...good question.
JAR-OPS states that you can not use converted viz to RVR for:
- take-off minima calculation
- CAT 2/3 minima
- or when a reported RVR is available.
in all other cases I think you can, planning or inflight...
Or did I miss something?
Anybody got a JAR-OPS reference? I looked at JAR-OPS Section 1 - Part E
Also, circling approaches are as far as I know based on met viz anyways...so no RVR conversion required.
Last edited by Bbow; 8th February 2008 at 20:15.