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Falcon 9 Block 5 | SDA Tranche 1 Transport Layer C

October 15, 2025 at 11:06 PM UTC

Vandenberg SFB, CA, USA

Falcon 9 Block 5 | SDA Tranche 1 Transport Layer C launch image
Mission imagery · Falcon 9 Block 5

Launch details

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October 15, 2025 at 11:06 PM UTC

Status: Launch Successful · Live feed refreshes every 30 seconds

Space Launch Complex 4E

Vandenberg SFB, CA, USA · 34.6320, -120.6110

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Launch site
Space Launch Complex 4E

Vandenberg SFB, CA, USA

Launch probability
80%
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October 15, 2025 at 11:06 PM UTC
Window closes
October 15, 2025 at 11:06 PM UTC
Feed updated
November 2, 2025 at 9:28 AM UTC

Mission description

Tranche 1 Transport Layer C 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 Lockheed Martin.

Vehicle

Falcon 9 Block 5

Falcon · Block 5

Height

70 m

Diameter

3.65 m

LEO capacity

22,800 kg

Successful launches

624

Launch complex

Space Launch Complex 4E

Vandenberg SFB, CA, USA

Vandenberg Space Force Base is a United States Space Force Base in Santa Barbara County, California. Established in 1941, Vandenberg Space Force Base is a space launch base, launching spacecraft from the Western Range, and also performs missile testing. The United States Space Force's Space Launch Delta 30 serves as the host delta for the base, equivalent to an Air Force air base wing. In addition to its military space launch mission, Vandenberg Space Force Base also hosts space launches for civil and commercial space entities, such as NASA and SpaceX.

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Mission updates

Launch success.

October 16, 2025 at 12:55 PM UTC · Cosmic_Penguin

Payload separation.

October 16, 2025 at 2:00 AM UTC · Cosmic_Penguin

Unofficial Re-stream by SPACE AFFAIRS has started

October 15, 2025 at 11:12 PM UTC · LL2

Liftoff.

October 15, 2025 at 11:06 PM UTC · Cosmic_Penguin

Now targeting Oct 15 at 23:06 UTC

October 15, 2025 at 10:25 PM UTC · Cosmic_Penguin