throw_a_dyce: fascinating insight- cheers
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But pls forgive me if I appear like a stuck record here..but I find it very hard to believe a controller would allow two radar returns to merge purely on the assumption the non-squawking/modeA aircraft is not infringing. Would you just sit there with fingers crossed under the desk hoping that the unidentified a/c is not at the same level? (I take it a verbal traffic advisory would be issued to the controlled traffic at the least?).