More than 100 flights at Indira Gandhi International Airport (IGIA) were delayed on the evening of November 6 and the morning of November 7 due to a technical glitch in the air traffic control (ATC) system.
The disruption occurred when the Automatic Message Switching System (AMSS), which feeds data into the Auto Track System (ATS) used for flight planning, malfunctioned. With the automatic system offline, ATC staff had to prepare flight plans manually, slowing operations and triggering widespread delays.
Delhi’s IGIA, one of the busiest airports in India handling over 1,500 daily flight movements, reported delays of 45–50 minutes for several departures and arrivals. Airlines including IndiGo, SpiceJet, and Air India issued advisories urging passengers to check flight status before traveling.
Delhi International Airport Limited (DIAL) confirmed that teams, in coordination with the Airports Authority of India (AAI), were working to restore normal operations. Officials warned that clearing the backlog could take several hours, with ripple effects expected at airports including Lucknow, Jaipur, Chandigarh, and Amritsar.
Passengers at the airport faced long queues and extended waiting periods on board as repeated announcements about rescheduling were made.
