Further flight testing was to take place in Moses Lake, conducting initial airworthiness and flutter tests, before moving to Palmdale, California, for the majority of flight tests, so as to not interfere with 787 flight tests based out of Boeing Field in Seattle.
Leváronse a cabo máis probas en Moses Lake, entre elas as primeiras de aeronavegabilidade, antes de trasladarse a Palmdale, en California, para realizar a meirande parte dos voos de proba, para non interferir coas do 787 que se estaban a facer en Boeing Field en Seattle.