Originally Posted by
Paulm1949
Still not really answered my question unfortunately. What happens if there’s no details on the CCI pages. Why is the minima still missing on the charts but still states Cat3?
In the case of CAT III with no DH and no RVR, that would only exist under CAT IIIc. But CAT IIIc is still purely theoretical — no airport in the world currently operates it.
What we have today are CAT III procedures with no DH, but they still require an RVR.This means that the lowest landing minima published on the chart is “no DH,” and the actual usable minima (DH or RVR)depend on the aircraft, the crew qualification, and the operator’s policy. The RVR minimum, however, is still defined by the airport and must be met.
If CAT IIIc were ever implemented and did not require RVR (essentially RVR 0), that would only indicate the maximum capability of the airport. Whether you can actually land or not would still depend on the same factors mentioned above.The DH or RVR shown on the chart represents the capability of the runway or the airport — not the capability of the aircraft or the pilot.If there were “No DH” and “No RVR,” it could be written as zero or simply left blank.
I’ve only ever seen CAT III charts with no DH, but I have never seen any chart with no RVR or no minima as you said. Could you show an example or provide such a chart? I’d like to see it.