Falcon 9 Block 5 | SDA Tranche 1 Transport Layer C
Oct 15, 2025, 11:06 PM UTC
Track in KeepTrackLaunch Overview
Vehicle
Falcon 9
Agency
SpaceX
Site / Pad
VSFBS / SLC4E
Outcome
Success
Flight
549/B1093.7 F547
COSPAR Designator
2025-230
Mission
SDA Tranche 1 Transport Layer C (Government/Top Secret)
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 & Provider
Rocket
Falcon 9 Block 5
Provider
SpaceX
Agency launches
583 (134 YTD)
Site launches
837 (51 YTD)
Pad launches
223 (49 YTD)
Payloads (21)
| Piece | Name | Owner | State | Track |
|---|---|---|---|---|
| 2025-230A | SDA T1TL-C-01 | SDA | US | Track |
| 2025-230B | SDA T1TL-C-02 | SDA | US | Track |
| 2025-230C | SDA T1TL-C-03 | SDA | US | Track |
| 2025-230D | SDA T1TL-C-04 | SDA | US | Track |
| 2025-230E | SDA T1TL-C-05 | SDA | US | Track |
| 2025-230F | SDA T1TL-C-06 | SDA | US | Track |
| 2025-230G | SDA T1TL-C-07 | SDA | US | Track |
| 2025-230H | SDA T1TL-C-09 | SDA | US | Track |
| 2025-230J | SDA T1TL-C-09 | SDA | US | Track |
| 2025-230K | SDA T1TL-C-10 | SDA | US | Track |
| 2025-230L | SDA T1TL-C-11 | SDA | US | Track |
| 2025-230M | SDA T1TL-C-12 | SDA | US | Track |
| 2025-230N | SDA T1TL-C-13 | SDA | US | Track |
| 2025-230P | SDA T1TL-C-14 | SDA | US | Track |
| 2025-230Q | SDA T1TL-C-15 | SDA | US | Track |
| 2025-230R | SDA T1TL-C-16 | SDA | US | Track |
| 2025-230S | SDA T1TL-C-17 | SDA | US | Track |
| 2025-230T | SDA T1TL-C-18 | SDA | US | Track |
| 2025-230U | SDA T1TL-C-19 | SDA | US | Track |
| 2025-230V | SDA T1TL-C-20 | SDA | US | Track |
| 2025-230W | SDA T1TL-C-21 | SDA | US | Track |