SDA Tranche 1 Transport Layer, fourth launch

The payload

21 data transport satellites for the Space Development Agency. SpaceX's mission page reads: "SpaceX is targeting Monday, October 5 for a Falcon 9 launch of the Space Development Agency's (SDA) fourth Tranche 1 data transport mission to low-Earth orbit (LEO)", with liftoff at 1:17 a.m. PT (08:17 UTC) and "a backup opportunity available on Tuesday, October 6 at 1:08 a.m. PT" (08:08 UTC). The satellites form the fourth orbital plane of the agency's Proliferated Warfighter Space Architecture, and SpaceX calls this the fourth of nine Tranche 1 missions Falcon 9 will fly for the SDA. The first stage is to land at Landing Zone 4.

Status history

1. 2 Oct 2026Added as scheduled from SpaceX's own mission page: targeting 1:17 a.m. PT (08:17 UTC) on Monday 5 October from SLC-4E, with a backup at 1:08 a.m. PT (08:08 UTC) on Tuesday 6 October.

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