Navigation and Avionics
e. Computer-Aided-Design (CAD) "software" specially designed for the "development" of "active flight control systems", helicopter multi-axis fly-by-wire or fly-by-light controllers or helicopter "circulation-controlled anti-torque or circulation-controlled direction control systems", whose "technology" is specified in 7.E.4.b.1., 7.E.4.b.3. to 7.E.4.b.5., 7.E.4.b.7., 7.E.4.b.8., 7.E.4.c.1. or 7.E.4.c.2.