Blue Origin has identified the faulty component behind the explosion that destroyed its New Glenn rocket during a pre-flight hotfire test in May, saying the failure originated in the main oxygen valve of one of the BE-4 engines powering the first stage. CEO Dave Limp confirmed the finding via hardware recovery and inspections, though he did not detail the exact failure mode or how it triggered the blast. The disclosure matters because it clears a key hurdle in Blue Origin's effort to rebuild its Cape Canaveral launch pad and return New Glenn to flight before the end of 2026.

New Glenn's first stage uses seven BE-4 engines, and the May explosion at Launch Complex 36 destroyed both the rocket and critical ground infrastructure. Blue Origin is rebuilding the pad with a revised horizontal assembly process and says it has run extensive component and engine hotfire tests to inform fixes; small modifications to the valve, retrofittable to existing engines, are being manufactured and should be ready by the end of August. The issue also has implications for United Launch Alliance, which uses two BE-4 engines on its Vulcan rocket and has not said whether its own engines will need the same modification.