L3Harris Completes Preliminary Design Review for SDA Tranche 3 Missile Tracking Satellites
MELBOURNE, Fla., Sept. 24, 2026 — L3Harris Technologies (NYSE: LHX) has announced the successful completion of the Preliminary Design Review (PDR) for the Space Development Agency’s (SDA) Tracking Layer Tranche 3 (TRKT3) program. This milestone represents a crucial advancement in the delivery of next-generation, space-based missile defense capabilities for the United States.
The PDR has validated the baseline designs for L3Harris’ TRKT3 mission solution, which encompasses ground operations, networking, satellite systems, communications, and infrared payloads. The integrated architecture aims to deliver infrared sensing, sophisticated on-orbit data processing, and precise real-time threat detection algorithms.
“Beginning with Tranche 0, L3Harris’ structured spiral development approach has enhanced missile warning, tracking, and defense capabilities essential for confronting modern threats,” stated Jeff Hanke, President of Space Systems within L3Harris’ Space & Mission Systems division. “This institutional expertise propels both speed and accuracy in our programs and emphasizes why L3Harris is recognized as a trusted partner in addressing SDA’s Tracking Layer mission requirements.”
Once operational in orbit, the TRKT3 satellites are expected to provide near-continuous global missile warning and tracking. They will be integrated into the SDA’s Proliferated Warfighter Space Architecture, which is a vital element of the nation’s multi-layered missile defense strategy.
L3Harris was awarded an SDA contract in December 2025 to design and construct 18 space vehicles for the T3 Tracking Layer. The company has over 70 missile tracking and defense satellites on order to support the Proliferated Warfighter Space Architecture.
About L3Harris Technologies
L3Harris is recognized as the trusted disruptor in defense technology. Focused on meeting customers’ mission-critical requirements, the workforce delivers comprehensive technology solutions across the space, air, land, sea, and cyber domains, advancing national security needs. For further information, visit L3Harris.com.
Forward-Looking Statements
This press release contains forward-looking statements that reflect management’s current expectations, assumptions, and estimates regarding future performance and economic conditions. Such statements are made under the protective provisions of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. L3Harris cautions that forward-looking statements are subject to risks and uncertainties that may result in actual outcomes differing materially from those anticipated in the statements. These forward-looking statements regarding system capabilities carry inherent risks, and L3Harris disclaims any intention or obligation to update or revise them based on new information, future developments, or other factors.
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Source: L3Harris (2026-09-24)
