new delhi, Feb. 4 -- Tests by Air India's engineers on the fuel switches of a Boeing 787 Dreamliner, which was grounded after its pilot reported a possible issue with one of them, found the components were working within satisfactory parameters when operated according to the procedure recommended by the aircraft's manufacturer, the aviation regulator said on Monday. The Directorate General of Civil Aviation (DGCA) in a statement said it had advised Air India to educate its crew on the procedure recommended by Boeing for operating the switches, which control the flow of fuel to the plane's engines.These components were at the centre of the investigation into the crash of another Air India Dreamliner in Ahmedadabad last June, in 260 people we...