The vehicle will be launched on a rocket before separating and igniting its own scramjet engines to reach speeds up to Mach 12.
Boeing’s wider reputation had a lot riding on the spacecraft’s success following the mid-air blowout of a door plug on board an Alaska Airlines MAX 9 in January.
In a Wednesday briefing, the space agency said the tests would be short pulses lasting just 0.1 seconds and could involve some of the aft thrusters that experienced problems on the journey to the International Space Station (ISS).
The space agency said returning Sunita “Suni” Williams and Barry “Butch” Wilmore onboard Starliner was too risky as engineers still hadn’t fully deduced what went wrong with its thrusters.
At a briefing on Wednesday, NASA pushed back the SpaceX Crew-9 launch from mid-August to late September, a move that could allow the two astronauts to return to Earth in the rival vehicle.
The launch provider added that it had earmarked “a few potential sites” and would leverage its existing orbital launch technology but provided few other details.