ULA moves Vulcan launch of Amazon satellites to Saturday after nitrogen plant power problem

United Launch Alliance called off Friday's planned Vulcan launch from Cape Canaveral Space Force Station and will try again Saturday, Nov. 14, at 12:32 p.m. EST, according to a ULA update posted Friday morning. The company said a power interruption at the Air Liquide gaseous nitrogen plant knocked out its high-pressure pumps, and without confirmation of a steady supply, the team moved to the backup opportunity. ULA said the rocket and the satellites are healthy.

Saturday's launch window runs from 12:32 to 1:01 p.m. EST from Space Launch Complex 41, according to ULA's mission page. The rocket is carrying 40 Amazon Leo broadband satellites, the first of 38 Vulcan launches Amazon has bought, according to ULA and Amazon. It is also Vulcan's first flight since a solid rocket booster nozzle problem during a February launch, Spaceflight Now reported.

For anyone on the Space Coast planning to watch, the midday launch is now Saturday instead of Friday, when the window had been set to open at 12:54 p.m.

Check ULA's mission page for the latest launch time.