@aircraftworldusa: BOEING 777-9 WH003 RETURNS FROM ANOTHER 777X TEST MISSIO✈️ N779XY / WH003, operating as BOE003, returned to Boeing Field in Seattle after flying to Moses Lake. This aircraft is one of the key Boeing 777X test jets used for work involving the GE9X engines, propulsion, avionics and flight loads. And with the 777-9 deep into its certification campaign… these flights are getting VERY interesting. #Boeing777X #Boeing7779 #777X #Boeing #Aviation