A United Launch Alliance Atlas 5 551 rocket stands at Space Launch Complex 41 at Cape Canaveral Space Force Station ahead of the planned launch of the Leo Atlas 07 mission for Amazon Leo. Image: Adam Bernstein/Spaceflight Now

United Launch Alliance is set to launch a batch of Amazon Leo’s broadband internet satellites on its Atlas 5 rocket from Cape Canaveral Space Force Station on Friday evening, weather permitting.

The countdown for the mission dubbed Amazon Leo 7 by ULA and Leo Atlas 07 (LA-07) by Amazon began at 12:13:30 p.m. EDT (1613:30 UTC) at T-minus 6 hours, 20 minutes. There countdown features two planed, 30-minute holds with the first coming before fueling begins at T-minus 2 hours.

This is the seventh batch of production satellites that ULA will launch on behalf of Amazon and the penultimate mission for the tech giant using an Atlas 5 rocket.

Liftoff from Space Launch Complex 41 is scheduled for 7:33:30 p.m. EDT (2333:30 UTC), at the opening of a 29-minute window. The rocket will fly on a north-easterly trajectory upon leaving the launch pad.