Originally Posted by
vespasia
Almost, but not quite. At Gatwick the lights are set up according to specified vis and/or cloud conditions, and while some variation is permitted in better vis ( pilot request or controller decision ) the lights must be set correctly when IRVRs show, or the IRVR value will be incorrect. Don't know about other airfields in this respect, but, when it's working properly, our lighting system also has presets which put all the required lights on at the " approved " setting when selected.
So these instructions are in the KK MATS Part 2, not Part 1- which is what I said.
And, yes, the 'typical' settings are in CAP 168.