Overview
- AAI said the Automatic Message Switching System that feeds flight‑plan data to controllers failed on November 6, forcing manual processing and triggering heavy congestion on Friday.
- Flight-tracking and official updates indicated more than 800 delays at IGIA, with at least 20 cancellations and average departure waits of roughly 50–60 minutes.
- Automated operations were restored Friday evening and Saturday advisories reported gradual normalisation, though residual backlogs continued to slow some departures and arrivals.
- AAI engaged the original equipment manufacturer, deployed ECIL and extra staff on site, and convened a review led by the Civil Aviation Secretary as an enquiry proceeds.
- Airlines urged passengers to check status as delays rippled to airports including Mumbai, Jaipur, Lucknow, Chennai and Bengaluru, while controllers’ representatives renewed calls for system upgrades.