...so why was the Air Moldova 320 affected by fog, yet numerous Ryanair 738s - arriving before and after - weren't?
Maybe because Air Moldova require higher minimums, or the kit on the aircraft was downgraded or inop, or the crew weren't current for a low-vis landing, or... So they held for a while hoping for an improvement, and then by previous account decided to kick STN into touch and went to BHX...