Delhi Airport Technical Glitch Fixed, Flight Ops Returning To Normal: IGIA

Flight services at Indira Gandhi International Airport (IGIA) are gradually returning to normal following a major disruption caused by a technical failure in the Automatic Message Switching System (AMSS), a critical component of Air Traffic Control (ATC) flight planning.

The outage, which began on Friday, led to widespread delays and congestion at India's busiest airport. Over 1000 domestic and international flights were delayed and approximately 20 were cancelled due to the system failure.

In a statement posted Saturday morning on social media platform X, Delhi Airport confirmed that the technical issue affecting the AMSS was "gradually improving," and that airline operations were "returning to normal." The airport advised passengers to stay in contact with their respective airlines for the latest updates and assured that authorities were "working diligently to minimise any inconvenience caused."

The Airports Authority of India (AAI) later confirmed that the issue had been traced to the IP-based AMSS system on November 6, prompting a shift to manual processing of flight plans to maintain operational safety. A technical team from Electronics Corporation of India Ltd (ECIL) was dispatched from Hyderabad and successfully restored the system late Friday night.

IndiGo Airlines also issued a statement on X, noting that the AMSS outage had been resolved and that normal operations were being progressively restored at Delhi and other affected airports in northern India. The airline thanked airport and ATC teams for their swift response and urged passengers to check their flight status before travelling.

"As flight operations stabilise, delays and terminal-side congestion may continue for some time," IndiGo said. "We thank you for bearing with us during this transition back to normalcy."
The carrier added that its ground teams were actively assisting passengers with updated schedules and onward connections, and recommended allowing extra travel time to the airport.

In its latest message, it wrote, "Airport operator and ATC teams are working on priority to fully restore systems and stabilise operations. The situation is expected to be normalised over the next few hours. During this period, some departure and arrival timings may continue to be adjusted."

It noted that the teams are on-ground and actively assisting customers with updated schedules, onward connections, and real-time information to help make any unavoidable wait more manageable.

Officials noted that while the AMSS system is now operational, residual delays may persist briefly as backlogs are cleared and automated systems fully stabilised.