We are publishing the technical characteristics for the engine of the helicopter that crashed on 19th April 2003 in Val di Susa, Italy, when six people died. Turbomeca, the French firm based in Bordes that produces the Arriel 1 engine installed on the helicopter, which blades broke because of a fault, causing it to explode. The Arriel engine was launched in 1977; since then 28 versions have been...