New Delhi, Dec. 10 -- The civil aviation minister K Ram Mohan Naidu on Tuesday said that despite assurances from IndiGo to obey the new flight duty time limitations (FDTL) rules, internal rostering disruptions of the airline led to large scale cancellations, causing inconvenience to thousands of passengers. The minister was speaking about the massive flight cancellations and delays in the Lok Sabha. He said, " Indigo had clearly assured full compliance with these norms and also confirmed its preparedness to undertake its winter schedule. Despite these assurances, prima facie, it was observed that internal rostering disruptions led to large-scale cancellations, causing inconvenience to thousands of passengers. The Ministry advised the regulator to act immediately." He informed the House that the disruption caused by Indigo's recent operational failures was "rapidly stabilizing." " Indigo has been directed to restructure its operations, add reserve crew capacity, improve passenger handling and restore normal schedules without any delay. Enhanced oversight on the ground continues," he told the parliament. "Indigo's daily flights, which had fallen drastically to 706 on 5th of December, have recovered to over 1800 flights yesterday (on Monday) and are expected to rise further today," he said, assuring that all other airlines continue to operate smoothly across the country and the airports are reporting normal conditions without crowding or distress. He said that refunds, baggage tracing and passenger support measures were under continuous supervision by the ministry....