Supermarine Spitfire Mk.1A Supermarine Spitfire Mk.1A K9942/SD-D RAF. The oldest surviving Spitfire is a Mark 1, serial number K9942; it is preserved at the Royal Air Force Museum Cosford in Shropshire. This aircraft was the 155th built and first flew in April 1939. It flew operationally with No. 72 Squadron RAF until June 1940, when it was damaged in a wheels-up landing. After repair, it was used for training until August 1944, when it became one of several Battle of Britain aircraft veterans that were allocated to the Air Historical Branch for future museum preservation. | Rob Vogelaar Supermarine Spitfire Mk.1A K9942/SD-D RAF