RoyHudd:
And there appears to be confusion between R/W 12 and a 12DME Arc procedure in this thread. That is in itself evidence of a lack of expert knowledge.
I don't see where anyone in this thread has exercised, or tried to exercise, expert knowledge, other than perhaps my drawing up the present PANS-OPS circle-to-land criteria. That is factual.
As to whether a DME ARC or BC 12 procedure (or both) existed in the past could be a correct or incorrect recollection. I don't see how that is an assertion of expert knowledge.