The story so far: Air traffic operations at New Delhi’s Indira Gandhi International (IGI) Airport were affected on November 6, after the Automatic Message Switching System (AMSS) experienced a technical issue. It took over 24 hours for it to be restored. The Civil Aviation Ministry is reported to have asked the Airports Authority of India (AAI) to upgrade the system.

Also Read | ATC system glitch at Delhi fixed; snag had delayed over 500 flights

What was the issue in Delhi?

The Air Traffic Controllers’ Guild (India) raised its concerns, highlighting how the disruption forced Air Traffic Controllers (ATCOs) to manually handle over 2,500 daily aircraft movements, including more than 1,500 scheduled flights and 1,000 aircraft overflying Indian airspace. An aviation source who is closely

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