Over 100 Flights Delayed At Delhi Airport Due To Technical Glitch In ATC System, Issue Later Addressed By AAI

New Delhi: More than 100 flights were delayed at Indira Gandhi International Airport (IGIA) here on Friday morning owing to technical problems with the Air Traffic Control (ATC) system. Authorities are working to fix the issues, said Delhi Airport authorities.

IGIA, the country's busiest airport, handles more than 1,500 flight movements every day. After the glitch today, the Delhi Airport issued a passenger advisory, asking them to stay in touch with their respective airlines for the latest flight updates.

"Due to a technical issue with the Air Traffic Control (ATC) system, flight operations at IGIA are experiencing delays. The team is actively working with all stakeholders, including DIAL to resolve it at the earliest. Passengers are advised to stay in touch with their respective airlines for the latest flight updates. We sincerely regret the inconvenience caused," Delhi Airport said in a post on X.

The state-owned Airports Authority of India (AAI) said flight operations at the Delhi airport are facing delays due to a "technical issue in the Automatic Message Switching System (AMSS)", which supports air traffic control data, providing air traffic control and navigation services. "Technical teams are working to restore the system at the earliest", AAI said in a post on X.

Later in the day, the Airports Authority of India issued a statement saying they "successfully addressed a technical issue in the Automatic Message Switching System at Indira Gandhi International Airport, New Delhi, which had temporarily affected the processing of flight plan messages from 6th November, 2025."

According to the AAI, upon detection of the issue in the IP-based AMSS system, an urgent review meeting was convened by Samir Kumar Sinha, Secretary, Ministry of Civil Aviation, with Vipin Kumar, Chairman AAI, M. Suresh, Member (Air Navigation Services) AAI and senior officials. Immediate directions were issued to identify and rectify the root cause of the problem.

Parallely, the Original Equipment Manufacturer was engaged, and additional manpower was deployed to manually process flight plans, ensuring continuity and safety of Air Traffic Control operations without disruption. A dedicated team comprising officials from Electronics Corporation of India Limited and AAI stated that their team continued to remain on-site to oversee system stability and performance.

According to the AAI, the AMSS has now been restored to normal functionality. While minor delays in automated processes may persist due to backlogged data, the system is stabilising and full normalcy is expected shortly.

The statement also said that the AAI "deeply regrets any inconvenience caused to airlines and passengers and reaffirms its commitment to maintaining the highest standards of operational safety, reliability and service excellence across the nation’s air traffic management network."

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