New Delhi, June 18 -- At least 13 Air India Dreamliner flights, including one on the Ahmedabad-London route that was restarted after a fatal crash on June 12, were grounded due to technical or operational issues on Tuesday as regulatory checks and the closure of airspace on some sectors continued to disrupt the airline's schedules.

The Directorate General of Civil Aviation (DGCA) said 66 Boeing 787 Dreamliner flights - the type of aircraft involved in the crash - were cancelled by the airline since June 12, among 83 cancellations involving the airline's broader widebody fleet. On June 12, the airline operated 90 wide-body flights, out of which 50 were on 787s. Out of these, six were cancelled, including five on Dreamliners.

To be sure, ...