Space Launch Hub logoSpace Launch Hub logoSpaceLaunchHub

Explore. Understand. Follow the story.

SpaceX/Falcon 9 Block 5·Space Launch Complex 4E

Falcon 9 Block 5 | SDA Tranche 1 Transport Layer A

Orbit: PO·Type: Government/Top Secret·Agencies: Space Development Agency

Mission Elapsed Time (MET)

GMT Time
Spaceport
Launch Successful⟳ Rescheduled 4×
Falcon 9 Block 5 | SDA Tranche 1 Transport Layer A mission image
Vehicle: Falcon 9 Block 5Credit: SpaceX · Wikimedia Commons

Tranche 1 Transport Layer A 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 Northrop Grumman.

Target orbit
PO · Polar Orbit
Mission type
Government/Top Secret
Payload
SDA Tranche 1 Transport Layer A
Agencies
Space Development Agency
Mission Update

Launch success.

Launch SuccessfulMission Elapsed Time
T+ 00:00:00
Target Liftoff (UTC)2026-10-10 07:39:44 UTC
CoreB1103
✓ Landed
The Falcon 9 first stage B1103 has landed on Landing Zone 4 after its 6th flight.
Zone: Landing Zone 4Type: Return to Launch Site

Target liftoff time (UTC)

07:39:44 UTC

Saturday, 10 October 2026

Instantaneous window

Planned T-0 liftoff

07:39:44 UTCWindow open
07:39:44 UTCPlanned ignition
07:39:44 UTCWindow close
Rocket family
Falcon
Height
70m
Diameter
3.7m
Payload to LEO
22,800kg
Liftoff thrust
7,607kN
Stages
2