My father took his first flight aged 4 from Rhyl beach in an Avro 504K. His father was with him and he remembers it very clearly. It is 95% certain that the aeroplane he had his first flight in is currently coming to the end of a restoration and will have its first flight in many many years very soon. I took my father to see the aircraft in November last year and to say his face showed the memories that seeing the 504K brought back is an understatement.