SB>1 Revs Up In Ground Test: Expert Expects First Flight ‘In Weeks’

“Now that they’ve completed the initial ground run, the team can finish its work to clear the aircraft for first flight,” said Mike Hirshberg, executive director of the Vertical Flight Society. “Assuming the Defiant team doesn’t find anything noteworthy from its ground testing, it should be up in the air in the next few weeks.”