Fourth 747-8F flight test aircraft completes first flight

In the skies over Everett Thursday, RC503 (N5573S), Boeing's fourth 747-8F flight test aircraft - and technically the second production aircraft - made its first flight. The aircraft, which is painted in Cargolux's new colors, departed Everett and headed east for a stop in Moses Lake before returning to Paine Field at dusk. The aircraft is expected to head to Arizona for HIRF testing in the days to come.