NASA has yet to make a decision on when Boeing’s Starliner can return home or whether it will have its two astronauts on board. That delay has also led to a decision to delay the planned SpaceX Crew-9 mission.

NASA announced Tuesday it would target no earlier than Sept. 24 for the launch of the SpaceX Crew Dragon Freedom and its planned crew of NASA astronauts Zena Cardman, Nick Hague and Stephanie Wilson along with Russian cosmonaut Aleksandr Gorbunov.

They’re supposed to relieve the four members of Crew-8 who have been on board the International Space Station since March.

Also on board are NASA astronauts Butch Wilmore and Suni Williams, who flew up on Starliner as part of the Crew Flight Test arriving on June 6 after launching the day before from Cape Canaveral. Issues with the Starliner’s propulsion system’s thrusters and helium leaks, though, have caused delays in the decision on when and how Starliner will return home.

“This adjustment allows more time for mission managers to finalize return planning for the agency’s Boeing Crew Flight Test currently docked to the orbiting laboratory,” NASA posted on its website. “Starliner ground teams are taking their time to analyze the results of recent docked hot-fire testing, finalize flight rationale for the spacecraft’s integrated propulsion system, and confirm system reliability ahead of Starliner’s return to Earth.”

NASA said no decision has been made about Starliner’s return and has yet to nail down a date for the return readiness review that had been planned for last week.

NASA said pushing Crew-9, which was originally targeting as early as Aug. 18 for launch, will deconflict with a planned crew rotation from its Russian partners who are slated to fly up a Soyuz spacecraft with NASA astronaut Donald Pettit and a pair of Russian cosmonauts in early September.

NASA also is delaying SpaceX’s next planned resupply cargo mission CRS-31 to no earlier than October.

The ISS has only two ports that can support either Dragon spacecraft or Starliner. Right now, both parking spaces are taken and one has to leave before another can arrive.

Of note, Crew-9 will be targeting to launch from Cape Canaveral Space Force Station’s Space Launch Complex 40, which could mark the first human spaceflight from the launch pad. Crew Dragon launches have all previously flown from Kennedy Space Center’s Launch Pad 39-A, but that pad will be in use beginning in September to prepare for NASA’s Europa Clipper mission set to fly on SpaceX’s Falcon Heavy in October.

SpaceX had added a crew access arm to allow for human spaceflight from either of its Space Coast launch sites.

SpaceX also had a planned launch of the Polaris Dawn mission with billionaire Jared Issacman on an orbital flight plan, not visiting the ISS. A decision had not been announced on whether it would fly from KSC or the Cape.

It was originally targeting to fly at the end of July but gave way to the original Crew-9 date. SpaceX officials had previously said they would still try to fly it before the end of August, but have yet to announce if its launch plans were changing.