The airline, which operates about 2,200 flights a day, has been facing pilot shortages after it failed to adapt to the new pilot rest and duty rules introduced by the government early last year.

Mass cancellations of flights amid the busy travel season have caused a public outcry, forcing the government to intervene. The airline has been granted exemptions from the new rules, but the disruption has continued, with more than 300 flights cancelled at Delhi, Chennai and Bengaluru airports on Monday. The crisis is the biggest blow to the carrier in its 20-year operation.