SpaceXFalcon 9 Block 5Space Launch Complex 4E, Vandenberg SFB, CA, USA
SDA Tranche 1 Transport Layer F
Launch window
No countdown — this launch time is not yet known to the minute.NET Q4 2026Add to calendar
Image: SpaceX
Summary
SDA Tranche 1 Transport Layer F is expected to launch on a SpaceX Falcon 9 Block 5 from Space Launch Complex 4E, Vandenberg SFB, CA, USA in Q4 2026. It is SpaceX's 782nd launch, 163rd this year and humanity's 7,531st orbital launch attempt. It is planned as the 670th Falcon 9 Block 5 flight and the 144th this year. The payload is bound for Polar Orbit (PO).
- Watch
- No webcast announced yet.
- Vehicle
- Falcon 9 Block 5 · SpaceX
- Booster
- No booster details available.
- Mission
- Government/Top Secret · Polar Orbit (PO)for SDA
- Milestone
- Planned as the 670th Falcon 9 Block 5 flight · 144th this yearSpaceX's 782nd launch163rd this yearhumanity's 7,531st orbital launch attempt358th orbital launch attempt this year
Flight preview
Orbit: representative
Target site default for this orbit type. Not a catalogued object; this panel switches to the tracked orbit once the object is catalogued. Ascent simulated from a published stage table.
About this launch
Tranche 1 Transport Layer F 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.
Pad
Space Launch Complex 4E, Vandenberg SFB, CA, USA
Planned as the 324th launch from Space Launch Complex 4E, 86th this year · 950th from Vandenberg SFB, CA, USA
303 launches from this pad · 919 from Vandenberg SFB, CA, USA
67 days after the previous launch from this pad
Updates
Adding launch
Questions
When does SDA Tranche 1 Transport Layer F launch?
SDA Tranche 1 Transport Layer F is scheduled in Q4 2026.
Where can I watch SDA Tranche 1 Transport Layer F live?
No webcast has been announced yet.
What rocket is launching SDA Tranche 1 Transport Layer F?
Falcon 9 Block 5, flown by SpaceX. Falcon 9 Block 5 spec sheet
Where is SDA Tranche 1 Transport Layer F launching from?
Space Launch Complex 4E, Vandenberg SFB, CA, USA.
What orbit is SDA Tranche 1 Transport Layer F going to?
Polar Orbit (PO), a government/top secret mission.