Recent changes to Part-NCO in the context of "All-Weather Operations" have raised some questions, specifically related to amendment 13 of the AMC/GM to Part-NCO that has removed items (a) (2) and (3) from AMC1 NCO.OP.110.
When no reported meteorological visibility or RVR is available, is the PIC still allowed to make a determination on whether the RVR/VIS along the take-off runway is sufficient for departure, and what is the basis for the conclusion?
My answer would be yes. The basis is item 104 in Annex I (Definitions) to the Air Ops regulation:
"‘runway visual range (RVR)’ means the range over which the pilot of an aircraft on the centre line of a runway can see the runway surface markings or the lights delineating the runway or identifying its centre line;"
As RVR as is defined to be what the *pilot* can see, the determination of the RVR for take-off can be made by the pilot. (It is different for approaches as the pilot can't determine the RVR him/herself until the aircraft has already touched down and then it is too late.)
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General Aviation