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Space Exploration Technologies Corp.’s (SpaceX) vice president of build and reliability, Mr. Willian Gerstenmaier, stated today that his company discovered excess levels of oxidizer on the first stage of its Falcon 9 rocket. The anomaly was discovered during a test abort in Texas, explained the executive, whose company is now further investigating the issue.

His comments came during a teleconference hosted by the National Aeronautics and Space Administration (NASA) after the duo completed the flight readiness review for NASA’s upcoming Crew-2 mission to the International Space Station (ISS). The Crew-2 mission is part of the agency’s Commercial Crew Program (CCP), which successfully resumed ISS flights from the homeland U.S. last year.

SpaceX Will Investigate Implications Of Excess Oxidizer and Share Findings With NASA – Agency Promises To Resolve Issue

The Crew-2 mission will use SpaceX’s Dragon capsule, which initially flew astronauts Robert Behnken and Douglas Hurley to the ISS as part of NASA’s DM-2 mission last year. This mission tested the vehicle’s capabilities, following which NASA deemed its performance satisfactory for crewed flights. The Crew-2 mission will be the first time that SpaceX and NASA reuse a Dragon capsule, as astronauts from their previous mission prepare to return soon after the Crew-2 mission docks with the orbiting space laboratory.

Mr. Gerstenmaier led his opening remarks at the press conference to describe the problem when he stated:

While SpaceX conducts pre-launch operations at NASA facilities, it develops its rockets in McGregor, Texas. Since its earliest days, the company has been operating out of this facility, having developed the iconic Merlin engine that powers its Falcon rockets in the facility.

In response to Bill Harwood of CBS News, the SpaceX executive provided more details for the anomaly. According to him, weather conditions made the company discover oxidizer levels higher than it had expected. SpaceX’s rockets use Liquid Oxygen as an oxidizer to ignite their Liquid Kerosene rocket propellant to generate thrust.

Gerstenmaier outlined that:

Bill was followed up by Irene Klotz of Aviation Week, who cut to the chase by asking Gerstenmaier about the precise levels of the fuel level mismatch.

This is a configuration we have flown in on all our flights so it’s not something new to us. But it’s something we discovered in and like we described at the beginning, we really pay attention to these really small things. I think in a normal program his amount of difference wouldn’t matter but in our world, we gotta take the extra step, go review, look at the consequences what happens worst case what if it’s…is it an indicator of something more serious, we’ll have those discussions. We’ll share all the data with NASA and make sure we’re ready to go do what we need to go do for the static fire coming up.

In response, the SpaceX executive replied:

He also confirmed later during the conference that the anomaly applies to all of SpaceX’s missions so far and is not limited only to the NASA missions.

NASA’s associate administrator for human exploration and operations mission directorate, Ms. Kathy Leuders, concluded the conference by expressing her confidence in SpaceX’s capabilities. She stressed the need to stay vigilant and promised that the issue would be resolved before the Crew-2 mission’s launch readiness review on Tuesday next week.