Federal regulators gave SpaceX the green light for another test flight of Starship, the most powerful launch vehicle ever constructed, after mishaps earlier this year rained debris near populated islands.

SpaceX has yet to announce a date for the ninth flight of the Starship rocket, which comprises the first-stage Super Heavy booster and the upper-stage Starship spacecraft. However, Tuesday’s testing of the spacecraft engines suggests that the flight could take place before the end of this month.