Air India Express, a subsidiary of the Tata Group, is facing significant challenges in its airline merger, resulting in the cancellation of approximately 40 flights per day until May 13. This disruption is attributed to a shortage of crew members, with over 300 senior cabin crew members taking sudden sick leave and becoming unreachable. The airline, which operates at over 80% capacity, has canceled around 13,000 flights, affecting both international and domestic routes. Passengers are advised to check their flight status in advance due to potential further disruptions, and those affected by cancellations or delays exceeding three hours are eligible for full refunds or flight reschedules without charges.