Derry just cannot sustain the services, would be brilliant for all if it could but if RYR can't pull it off with a based plane then who is. If its to be RE with an ATR42 then prices will have to be high enough to make it commercially worth while, and while yes they may get an incentive in fees from the Airport we'll all be back to square 1 when these are re-introduced as seen at BHD with RYR, and if the prices r too high then because we are a price concious group of people we will just travel the extra to BFS or BHD to get the flight. N.Ireland cannot sustain 3 airports, it's as simple as that. A couple of ad hoc charters to sun destinations in the summer and 1 daily london freq will be all that Derry will ever be able to sustain long term.