The Airports Authority of India (AAI) on Friday said the air traffic control system at Delhi’s Indira Gandhi International Airport was now fully functional, more than a day after a technical glitch disrupted
flight operations and caused delays to hundreds of services at one of the world’s busiest airports.
In a late-evening statement, the AAI said the Automatic Message Switching System (AMSS), which handles flight plan messages, had been successfully restored and was “up and running.”
The authority confirmed that the issue, which began on November 6, temporarily affected the automated processing of flight plans but did not compromise safety.
AAI Statement
According to the statement, an urgent review meeting was convened soon after the fault was detected. The meeting was chaired by Samir Kumar Sinha, Secretary, Ministry of Civil Aviation, along with Vipin Kumar, Chairman of AAI, and M. Suresh, Member (Air Navigation Services). Immediate directions were issued to identify and correct the problem.
Update on Technical Fault at IGI Airport, New Delhi
NEW DELHI, November 7, 2025 – AAI at Indira Gandhi International Airport addressed a technical issue in the Automatic Message Switching System (AMSS), which caused delays in processing flight plan messages. The issue was…
— Airports Authority of India (@AAI_Official) November 7, 2025
The AAI said the Original Equipment Manufacturer (OEM) was called in to assist, while extra staff were deployed to manually process flight plans to ensure the continued safety of air traffic control operations. A dedicated technical team from the Electronics Corporation of India Limited (ECIL) and AAI remains on-site to monitor system stability.
“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 authority said.
Airlines Respond As Delays Ease
Meanwhile, IndiGo posted on X the outage had been resolved and that “normal operations are being progressively restored” at Delhi airport and other affected airports in the northern region. It also thanked the airport and ATC teams for their “efforts in getting systems back online.”
We are pleased to share that the temporary AMSS system outage affecting Air Traffic Control has now been resolved, and normal operations are being progressively restored at Delhi Airport and other impacted airports in the northern region.
We appreciate the…
— IndiGo (@IndiGo6E) November 7, 2025
Earlier on Friday, chaos was reported at Delhi airport as more than 800 domestic and international flights were delayed. Long queues formed at boarding gates and terminals as air traffic controllers prepared flight plans manually, a time-consuming process.
Delhi airport, operated by Delhi International Airport Limited (DIAL) and handling around 78 million passengers in 2024, is ranked the ninth busiest airport in the world, according to Airports Council International.
(With inputs from agencies)
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