YY Wings Boeing 747-100 N7470 Museum Livery 1:400 Diecast Model1: 400 Diecast: Boeing 747 100 N7470 "City of Everett" Prototype Museum Livery (YY Wings YY74101) N7470 is the first Boeing 747 ever built. Assigned MSN 20235, Line Number RA001, it rolled out at Everett on September 30, 1968, and completed its maiden flight on February 9, 1969 with Boeing Chief Test Pilot Jack Waddell at the controls. Fitted with four Pratt & Whitney JT9D 7A turbofans, the prototype accumulated roughly 5,300 flight hours across