Falcon 9 launches 21 more York satellites for SDA Tranche 1, giving York 42 in orbit

York Space Systems/SDA Transport Layer satellites

A Falcon 9 from Vandenberg carried York's second plane of 21 Tranche 1 Transport Layer satellites. It followed a months-long launch pause while the agency worked through problems on the satellites already in orbit.

• York's first 21-satellite plane launched on 10 September 2025.
• Full Tranche 1: 126 transport and 28 tracking satellites, plus 4 missile-defence demonstrators.