Boeing's second 787-8F aircraft has flown to South California for flight test operations.
The four-hour flight from Boeing Field in Seattle included testing the avionics and cruise performance of the aircraft.
The freighter, known as RC521, will undergo several tests with fuel-mileage and engine-performance testing as key focus areas.
In the near future, two other 747-8 airplanes in the flight-test fleet will join RC521 in southern California.
The entire flight test programme requires three cargo craft to perform a total of 3,700 hours of ground and air testing.
The first 747-8F delivery to Cargolux is scheduled for the final quarter of 2010.
