IN Brief:
- L3Harris has received a $77.2 million modification for Trident II flight test instrumentation support.
- Work includes activity connected to Barrow-in-Furness in the UK.
- The contract highlights the manufacturing role of telemetry, test systems, and strategic weapons sustainment.
L3Harris Technologies has received a $77.2 million contract modification to support flight test instrumentation systems for the Trident II Strategic Weapon System, including work connected to Barrow-in-Furness.
The work sits within one of the most exacting areas of defence engineering. Flight test instrumentation collects the data needed to validate system performance during trials, support certification, and maintain confidence in submarine-launched deterrent systems across long service lives.
Work will be performed in Yorba Linda, Cape Canaveral, Washington, D.C., Barrow-in-Furness, Bremerton, Kings Bay, and Groton, with completion expected by February 2029. The modification supports Strategic Systems Programs and also benefits a Foreign Military Sale.
L3Harris has supported the US Navy’s Fleet Ballistic Missile programme for more than 40 years and continues to supply propulsion-related systems for Trident II D5. The company has manufactured gas generator units and associated missile components for the Trident enterprise over multiple weapon generations.
Test systems as strategic manufacturing
Flight test instrumentation is a manufacturing discipline in its own right. Sensors, telemetry packages, data recorders, power systems, environmental protection, and communications equipment must survive extreme vibration, acceleration, temperature, and electromagnetic conditions.
The output is data, but the industrial product is hardware that has to be calibrated, ruggedised, documented, and repeatable. A failure in instrumentation can compromise a test event even if the missile itself performs correctly.
Production pressure is measured in assurance rather than volume. Strategic systems require configuration control, traceability, material discipline, and validated processes over decades. Small design or supplier changes can require extensive review because of the certification burden around the wider weapon system.
L3Harris’ work underlines a quieter part of deterrent manufacturing. Strategic capability depends not only on missiles and submarines, but also on test equipment, propulsion components, telemetry, data systems, and specialist engineering support that keep the system understood and serviceable.