Condolences to the Eirjet crew. Confusing Ballykelly with Eglinton is horribly easy to do, particularly as the 08/26 runway was once capable of supporting dispersed V-bomber ops and is still 2,000 m plus, I believe. The tower controller really should have been aware of the possibility of confusion but it's easy to criticise with hindsight. Ballykelly with its big hangars and runway probably must show up much better that Derry/Eglinton.