India’s largest airline, IndiGo, has cancelled more than 550 flights in a single day, marking the worst air travel disruption in two decades. The airline attributed the cancellations to a combination of crew shortages, planning errors linked to new flight duty time limitation (FDTL) regulations, and technical issues. The new policy, effective since November 1, aims to reduce pilot fatigue and enhance safety but has increased the demand for pilots, especially for night operations. IndiGo’s on-time performance dropped sharply to 19.7 percent on Wednesday, down from 35 percent the previous day. The Ministry of Civil Aviation and the Directorate General of Civil Aviation (DGCA) have held meetings with IndiGo executives to address the crisis. Major airports including Mumbai, Bengaluru, Hyderabad, Kolkata, Chennai, and Goa were affected. IndiGo operates around 2,300 flights daily and is planning further cancellations over the next few days as it works to restore normal operations.