Investigators have found that two Italian sub-contractors used cheaper and non-compliant forms of titanium and aluminium to make certain parts for Boeing's 787 Dreamliner, saving significant sums of money and threatening plane safety,

Two Italian aerospace companies and seven people are being investigated for allegedly supplying non-compliant aeronautical components to Leonardo SpA for the production of some sections of the Boeing 787 Dreamliner,

The two firms allegedly used pure titanium to make structural components of the aircraft, instead of titanium alloys, and also used sub-standard aluminum alloys

By Francesca Landini MILAN (Reuters) -Italian prosecutors on Saturday accused seven people and two sub-contractors of crimes including fraud and breaching airplane safety rules following an investigation into suspected flawed parts produced by an Italian company for Boeing.