ULA says three nozzle causes are mitigated on Vulcan Leo 1

ULA said on Nov. 10 that the nozzle investigation found three credible causes of the February solid-rocket-booster anomaly and that design and build changes, tested in a full-scale GEM 63XL hot fire in Utah, are installed on Vulcan Leo 1. The company said the investigation continues. Vehicle V-012, a VC6L with the first LEO-optimized Centaur V, is scheduled for a Nov. 13 window opening at 12:54 p.m. EST with 40 Amazon Leo satellites and more than 50,000 pounds of payload, which ULA calls a record.