The airline industry is a rich source of interesting IT projects: I once worked on a scheduling system for BA, which boiled down to a big ol' constraints-based

The airline industry is a rich source of interesting IT projects: I once worked on a scheduling system for BA, which boiled down to a big ol' constraints-based optimisation problem, viz: lots of aircraft constantly moving about < * > mandated max hours they can fly before maintenance < * > restricted set of locations where said maintenance can be performed. I remember that the brief dalliance with individually decorated tailfins - which doubtless seemed like a great idea in a marketing meeting - caused carnage for the maintenance folks because the fins suddenly stopped being interchangeable.