More than 800 flights were delayed and several cancelled at Delhi’s Indira Gandhi International Airport on Friday after a technical failure in the Air Traffic Control (ATC) system brought operations to a standstill. The Airports Authority of India (AAI) confirmed that the issue, detected in the Automatic Message Switching System (AMSS), a critical component of the ATC network, has now been resolved. However, residual delays are expected as the system clears the operational backlog.

“The AMSS systems are up and functional now. Due to some backlogs, there may be delays in the normal functioning of automated operations, but the situation will be normal soon,” AAI said in a post on X.

What Is AMSS?

The Automatic Message Switching System (AMSS) is an IP-based communication platform that serv

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