Don't know why, really, but it was quite a surprise to see this aircraft in yellow, a tradition of course carried on through the Whirwind, Wessex and Sea King in the rescue role. But it does raise a question in my mind: what was the origin of the all yellow colour scheme in the rescue role? Was it with the Sycamore? It was a traditional colour for training aircraft much(?) earlier, but at what point did it cross roles?