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Launch Successful

Falcon 9 Block 5 | SDA Tranche 1 Transport Layer E

16 Jul 2026, 20:32 UTC

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Falcon 9 Block 5 | SDA Tranche 1 Transport Layer E

The mission

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.


Flight details

Provider
SpaceX
Rocket
Falcon 9 Block 5
Mission
SDA Tranche 1 Transport Layer E
Mission type
Government/Top Secret
Orbit
Polar Orbit
Pad
Space Launch Complex 4E
Location
Vandenberg SFB, CA, USA
Window opens
16 Jul 2026, 20:22 UTC
Window closes
16 Jul 2026, 21:09 UTC
Weather odds
100% favourable