Artemis

After warming up the area of the liquid hydrogen leak, engineers are once again flowing liquid hydrogen to the core stage.

Engineers are continuing troubleshooting efforts to address a liquid hydrogen leak in a cavity in the quick disconnect where the flight side and ground side plates join. They once again will attempt to warm up the quick disconnect to try to reset the seal. The liquid oxygen tank of the core stage is full and …

A liquid hydrogen leak has reoccurred again in a cavity between the ground and flight side plates of a quick disconnect in the engine section. Teams are discussing additional troubleshooting efforts.

Launch controllers have started flowing liquid hydrogen to the core stage again after troubleshooting the reoccurrence of a leak. This time engineers attempted to reseat the seal in a quick disconnect cavity where the leak occurred by applying pressure to it with helium.

As engineers increased the pressure on the flow of liquid hydrogen into the core stage, a leak reoccurred. Engineers will attempt to reseat the seal in the quick disconnect cavity where the leak has been detected. This time they will stop flowing liquid hydrogen to the tank, close the valve used to fill and drain …

Launch controllers have resumed flow of liquid hydrogen to the core stage after warming up a quick disconnect in the engine section where a hydrogen leak was detected in the cavity between the ground and flight side plates of the quick disconnect. Teams warmed up the quick disconnect to attempt to reseat it and set …

Engineers detected a liquid hydrogen leak in a quick disconnect cavity and have stopped flowing the propellant to the core stage while they troubleshoot. Launch controllers are attempting to warm up the quick disconnect to attempt to reseat it to get a tight seal. Liquid oxygen flow is continuing.

Engineers have started loading super cold liquid hydrogen into the Space Launch System rocket’s core stage and the fast fill phase for the core stage liquid oxygen tank also has started. The countdown clock, which was in a 2.5 hour built in hold, has resumed.

Engineers have started the slow fill phase of loading super cold liquid oxygen into the Space Launch System rocket’s core stage.

Artemis Launch Director Charlie Blackwell-Thompson has given the “go” to officially begin loading propellants into the Space Launch System rocket.  Tanking begins with chilldown of the core stage liquid oxygen transfer line. NASA TV coverage will begin at 5:45 a.m. http://www.nasa.gov/live.