L3Harris has announced the start of electromagnetic compatibility (EMI/EPT) testing for the AN/ALQ-254(V)1 Viper Shield system. This testing will support the next phase of software development. Flight tests are also ongoing.
The Viper Shield suite is intended for integration with F-16V Block 70/72 aircraft, but it can also be installed on Block 40 and Block 50 variants without requiring structural redesign. The manufacturer notes that older F-16 modifications can receive the system through external pods.
Read more: Romania's Dilemma: Too Many F-16s For Peacetime and Too Few For War
Initial flight testing of the production variant began in January 2025, alongside anechoic chamber testing to validate system performance under different conditions. According to L3Harris, hardware production is already underway, while software refinement continues in parallel.
The first deliveries of production units are expected by the end of 2025. Full-rate production is scheduled to begin by mid-2026. A total of 168 systems have been ordered to date.
Viper Shield is designed to enhance survivability in high-threat environments. To highlight its capabilities, L3Harris presents the system's effect as a virtual "electronic shield" protecting the aircraft in combat.
It's important to note that current production F-16s are rolling off the line without this system. The development contract was signed after the Block 70 program had already begun. As of now, six countries are awaiting delivery of the Viper Shield system.
Read more: What is This New Anti-Drone System Ukraine Will Receive, and What Important Problem Can It Solve?
