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launched

SDA Tranche 1 Transport Layer, fourth launch

SpaceX (for the Space Development Agency) · Falcon 9

A Falcon 9 launch leaves a bright arc across the dawn sky.
Archive photograph of Falcon 9 launching Dragon on 29 June 2018. SpaceX, via NASA.

At a glance

Status
launched
Provider
SpaceX (for the Space Development Agency)
Vehicle
Falcon 9
Window
10 October 2026 · 07:39 UTC
From
SLC-4E, Vandenberg Space Force Base, California
Destination
Low Earth orbit
Last verified
10 October 2026

Outcome

LAUNCHED · verified against the sources below on 10 October 2026.

The payload

21 data transport satellites launched on 10 October at 07:39 UTC on the fourth Tranche 1 transport mission. The Falcon 9 booster completed its sixth flight and landed at Landing Zone 4.

Status history

  1. 10 Oct 2026SpaceX confirms launch at 07:39 UTC, deployment of 21 satellites and booster landing at LZ-4.
  2. 8 Oct 2026SpaceX now targets 10 October at 07:29 UTC, with 11 October at 07:32 UTC as backup.
  3. 5 Oct 2026SpaceX’s mission page moves the target to 6 October at 08:17 UTC, with a 7 October backup at 08:02 UTC.
  4. 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.

Related

The launch deskThe mission boardLaunch data

Sources

  • spacex.com · https://www.spacex.com/launches/sda-t1tl-a