On Tuesday, Program Manager Kathy Lueders gave an update on the status of the Commercial Crew Program to the Human Exploration and Operations Committee of the NASA Advisory Council.
This would be the second flight test of the vehicle following a successful flight test to the station without a crew in March.
Lueders cautioned the schedule is dependent upon SpaceX and NASA closing out an investigation into the April 20 explosion of the Crew Dragon that visited the station.
That capsule exploded as it was being prepared for a test of the crew escape system.
In addition to understanding why the explosion took place, SpaceX must complete an in-flight abort flight and parachute tests. Both are crucial to the safety of the Crew Dragon vehicle.