New Delhi, Dec. 11 -- The aviation regulator has summoned IndiGo chief executive officer (CEO) Pieter Elbers on Thursday and asked him to present a report detailing data and updates on the airline's ongoing operational disruptions, according to an internal document HT has accessed. Directorate General of Civil Aviation (DGCA) asked IndiGo to give information about operational and passenger services, the status of network-wide restoration efforts, the progress made in re-accommodating affected passengers, and measures taken to prioritise vulnerable travellers. P6...