June 13, 2025

The launch of Axiom Mission-04 (Ax-04), which includes the launch of India’s first astronaut Shubhanshu Shukla to the International Space Station, has been postponed. Below is a chronological summary of key developments:

1. The launch originally targeted on May 29, 2025 was deferred due to observation in electrical harness in Crew Dragon Module, to June 8, 2025

2. The launch was postponed by one day to June 09, 2025 due to delay in preparedness of the Falcon 9 vehicle for the launch.

3. The launch date was further postpone to June 10, 2025, due to unfavourable weather in the ascent corridor.

4. Additional observation of oxygen leakage in the engine bay was observed during the preparation for hot fire test conducted on June 08, 2025. Moreover, there was an observation of an anomaly in one of the engine actuator which was replaced along with the controller.

5. Anticipating the quick resolution of LOX leak issue, the launch was rescheduled to June 11, 2025.

6. During the appraisal of technical issues by Axiom & SpaceX to ISRO delegation on June 10, 2025, ISRO recommended to carry out in-situ repairs or replacement and conduct a low-temperature leak test to validate system performance and integrity, before proceeding with launch clearance.

7. On June 11, 2025, NASA informed that they are working with Roscosmos to evaluate a new pressure signature indicating a leak in the aft most segment of the ISS Zvezda Russian service module, after the recent repair attempt. In order to assess the situation and determine the need for further troubleshooting, the launch of Axiom-4 mission is being postponed.

The revised launch schedule will be announced by NASA and Axiom after the activities and technical reviews are satisfactorily completed.