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Hundreds of Flights Delayed After Delhi ATC System Failure

A breakdown in the Automatic Message Switching System forced controllers to process flight plans by hand, cutting throughput at India’s busiest airport.

Overview

  • The Airports Authority of India confirmed the AMSS fault at Indira Gandhi International Airport as technical teams worked to restore automated processing.
  • Flight-tracking data showed average departure delays of about 50–60 minutes, with reported totals ranging from nearly 300 to more than 400 delayed flights.
  • The slowdown at Delhi created knock-on delays at other airports including Mumbai, Jaipur, Lucknow and Varanasi as aircraft and crew rotations slipped.
  • Airlines such as IndiGo, Air India, SpiceJet and Akasa Air issued advisories urging passengers to check real-time status while ground staff assisted at gates.
  • The disruption began late Thursday and continued into Friday, and investigators are examining possible causes, including unverified reports of malware.