In the late 1990s, the design was revised with the introduction of the Fenestron tail rotor system, an advanced rigid main rotor, composite materials, and resonance isolation systems.
A finais dos anos 90 o deseño foi revisado coa introdución do rotor de cola Fenestron, un avanzado rotor principal ríxido, materiais compostos, e sistemas de illamento por resoancia.