LAUNCH OF SpX-25 CARGO MISSION TO ISS, July 14, 2022, KSC, 8:44 pm ET

Update, July 8: NASA has confirmed July 14 as the launch date. Launch time is 8:44 pm ET.

A prelaunch science briefing and a prelaunch press conference are scheduled for July 13 and a postlaunch press briefing on July 14.  See our separate calendar entries for those events.

If launch takes place as scheduled, docking will be on July 16 at about 11:20 am ET.

Everything will be webcast.

Update, June 28:  The launch has been postponed again, this time to July 14.  NASA says via email:

Update, June 13: The problem was traced to a Draco thruster valve inlet joint, which will be replaced. NASA says the launch now is No Earlier Than (NET) July 11.  The time is TBD.

NASA and SpaceX officials met today to discuss the initial findings from additional inspections and testing of the Dragon spacecraft after teams measured elevated vapor readings of mono-methyl hydrazine (MMH) in an isolated region of the Dragon propulsion system. After offloading propellant from that region, SpaceX was able to narrow down the source of the issue to a Draco thruster valve inlet joint. Teams will now remove the specific hardware to replace it ahead of flight. NASA and SpaceX are now targeting no earlier than July 11 for launch of the CRS-25 cargo resupply mission to the International Space Station.

Update, June 6: The launch has been postponed. NASA said in a statement:

NASA and SpaceX are standing down from this week’s Falcon 9 launch of the CRS-25 cargo mission to the International Space Station. Officials from NASA and SpaceX met today to discuss an issue identified over the weekend and the best path forward.

During propellant loading of the cargo Dragon spacecraft, elevated vapor readings of mono-methyl hydrazine (MMH) were measured in an isolated region of the Draco thruster propulsion system. The propellant and oxidizer have been offloaded from that region to support further inspections and testing. Once the exact source of the elevated readings is identified and cause is determined, the joint NASA and SpaceX teams will determine and announce a new target launch date.

The two associated pre-launch briefings on June 9 also are postponed.

Update, June 2: The launch has slipped by another day. Now scheduled for June 10, 2022 at 10:22 am ET. It will air on NASA Television, the NASA app, and the agency’s website beginning at 10:00 am ET.

If launch goes as planned, it will dock with the ISS on June 12 at 6:20 am ET (NASA TV begins 5:00 am ET).

Update, May 26: The new launch date is June 9, 2022 at 10:45 am ET.

Original Entry: SpaceX will launch its 25th cargo resupply mission SpX-25, to the International Space Station on June 7, 2022 at 11:30 am ET from Launch Complex 39A at Kennedy Space Center, FL.

The schedule for related NASA/SpaceX media activities will be announced in due course.