SDA Tranche 1 Transport Layer B
SpaceX · Falcon 9
Success
TBD
Watch Live
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Launch Details
Launch Date
—
Agency
SpaceXRocket
Falcon 9 Block 5
Launch Pad
Space Launch Complex 4E — Vandenberg SFB, CA, USA
Launch Window
—
Probability
100%
Launch date history
No date changes since Orbit started tracking this launch on 27 Sep 2026.
Mission Progress
Current Stage
Booster Landing
First stage booster returns for a powered landing
10 of 10 stages complete
100%
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- Announced
Mission confirmed and added to the launch manifest
- Vehicle Integration
Rocket assembled and transported to the launch pad
- Pre-Launch Checks
Fuelling, systems checks, and final go/no-go polling
- Launch Window Open
Countdown active — T-0 within the launch window
- Liftoff
Main engines ignite and the vehicle clears the tower
- Max-Q
Maximum aerodynamic pressure on the vehicle
- MECO / Stage Separation
Main engine cutoff and first stage separates
- Second Stage Ignition
Upper stage engine ignites to continue to orbit
- Orbit Insertion
Payload deployed to target orbit — primary mission success
- Booster Landing
First stage booster returns for a powered landing
Launch Provider
SpaceX
CommercialSpXSpace Exploration Technologies Corp., known as SpaceX, is an American aerospace manufacturer and space transport services company headquartered in Hawthorne, California. It was founded in 2002 by entrepreneur Elon Musk with the goal of reducing space transportation costs and enabling the colonization of Mars. SpaceX operates from many pads, on the East Coast of the US they operate from SLC-40 at Cape Canaveral Space Force Station and historic LC-39A at Kennedy Space Center. They also operate from SLC-4E at Vandenberg Space Force Base, California, usually for polar launches. Another launch site is being developed at Boca Chica, Texas.
Founded2002
Total launches735
CountryUSA
Rocket & Vehicle
Falcon 9 Block 5
FalconBlock 5
Launch Pad
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