Britain's aviation authority is asking Air India for an explanation as to how a plane took off from London with a fuel switch that that could possibly have been faulty.
Air India earlier this month said it grounded a Boeing Dreamliner after a pilot reported a possible defect with the plane's fuel control switch.
Rebecca Bundhun has more from Mumbai.
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http://www.fsnradionews.com/feeds/0205IndiaPlane-rb-generic.mp3