Troubled Indian airline SpiceJet grounded its fleet Wednesday after suppliers refused to refuel its planes citing unpaid dues, a company source and reports said.The move came a day after the government asked state-run oil companies and airport authorities to extend emergency credit to the airline, which last week cancelled nearly 1,900 flights due to cashflow problems. “The fuel companies are not refueling any of the aircraft due to the airline’s fragile situation at the moment,” a SpiceJet source told AFP on condition of anonymity. The Press Trust of India said no flights had taken off on Wednesday and state oil companies were still deciding whether to extend credit to the airline.