Data checked:

Falcon 9 Block 5 | SDA Tranche 1 Transport Layer E
OK!

Falcon 9 Block 5 | SDA Tranche 1 Transport Layer E

LAUNCH SUCCESSFUL

> MISSION DATA

DATEThursday, July 16, 2026
TIME08:32 PM UTC
PROVIDERSpaceX
ROCKETFalcon 9 Block 5
PADSpace Launch Complex 4E
LOCATIONVandenberg SFB, CA, USA
ORBITPolar Orbit

> MISSION BRIEFING // GOVERNMENT/TOP SECRET

Tranche 1 Transport Layer E is one of six missions by the United States Space Force Space Development Agency (SDA) for the Proliferated Warfighter Space Architecture (PWSA) Tranche 1 Transport Layer constellation, which will provide assured, resilient, low-latency military data and connectivity worldwide to the full range of warfighter platforms from Low Earth Orbit satellites. The constellation will be interconnected with Optical Inter-Satellite Links (OISLs) which have significantly increased performance over existing radio frequency crosslinks. It is expected to operate over Ka band, have stereo coverage and be dynamically networked for simpler hand-offs, greater bandwidth and fault tolerance. This launch carries 21 satellites manufactured by York Space Systems.

> SCHEDULE & SOURCE

Source-reported status: Launch Successful. The launch vehicle successfully inserted its payload(s) into the target orbit(s).

Launch window: 2026-07-16 20:22:00 UTC — 2026-07-16 21:09:00 UTC.

Dates and windows may change. Passing the scheduled time does not confirm a launch outcome.

Launch data from The Space Devs

Understand launch windows and orbits · Launch provider guide