Vulcan's grounding gets its cause: a mid-flight nozzle failure on a solid rocket booster
From the Space digest for Oct 29, 2026
Sources Spaceflight Now NASASpaceflight (X) Talk of Titusville MSN
What happened: Spaceflight Now reports United Launch Alliance has announced a mid-November return to flight for its Vulcan rocket — the first launch for the heavy-lift vehicle since a mid-flight nozzle failure on one of its GEM 63XL solid rocket boosters. The mission is the "Vulcan Leo 1" flight on November 13, 2026, pending range approval, carrying the next batch of Amazon Leo production satellites (NASASpaceflight (X), Talk of Titusville). Per additional reporting, the Space Force will judge Vulcan by the Leo 1 data before clearing military launches — making the mission a gate for future national-security flights (MSN).
What's genuinely new: The grounding cause is now named to the specific hardware — GEM 63XL solid-rocket-booster nozzle failures — and the return flight gains a national-security stake: military launch clearances ride on how the Leo 1 flight performs.
Watch: Whether the November 13 date holds and range approval comes through, the booster fix's performance on the return flight, which military missions clear on the back of the Leo 1 data, and how the Amazon Leo batch lands against the constellation's open 2026-vs-2027 service-start conflict.