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USAF Wright Laboratory, in conjunction with the Joint Technical Coordinating Group on Aircraft Survivability, Naval Air Warfare Center, Army Research Laboratory, and USAF Phillips Laboratory, tested the electromagnetic vulnerability of a complete digital flight control system. These tests, spanning three years, generated a wealth of data and numerous lessons learned. This paper examines some of those lessons learned, and how they can reduce vulnerability of future vehicle management systems. While this is focused toward flight control systems, the principles can be applied to any electronic system of interest.

Recent concerns about the susceptibility of digital flight control systems (DFCS) to electromagnetic interference (EMI) have lead to testing a representative DFCS for upset from possible carrier signal modulations.