Here is some neat video of an Avro Vulcan bomber flying a demo at an air show, way back in 2010.
The Vulcan is a Delta wing bomber originally developed as a nuclear weapons capable strategic bomber for the Royal Air Force. It was operated by the Royal Air Force from 1956 until 1984.
It was recently announced that this plane, the last remaining air worthy model, will cease flight operations after the 2015 air show season out of safety concerns.
The operator of the airplane had an agreement with BAE Systems and with the engine manufacturer Rolls Royce for continued engineering support. Unfortunately, both firms pulled out of the agreement since they lacked the necessary legacy skills to continue to work on the plane.
Which, in my opinion, sounds like a nice way of saying that all the old people that knew how to fix this plane and power plant have all retired or died and we have no one else left that can work on that old plane.
The plane is already 10% beyond what anyone thought would be a safe number of hours of operation for any Vulcan bomber and the British Civil Aviation Authority will not let the plane continue to fly without engineering support from the manufacturers.