More trouble mounts for IndiGo Airlines, which is already grappling with a lot of challenges. Moody’s, the global credit rating agency, says IndiGo’s poor preparation for long-announced aviation regulations led to major flight disruptions and is viewed as credit negative.

Moody’s on Monday warned that the recent flight disruptions are “credit negative” for the airline. The agency adds that the chaos highlights serious gaps in the airline’s planning and oversight, despite having more than a year to prepare.

The ratings agency said IndiGo could lose revenue and suffer image damage after hundreds of flights were delayed or cancelled when new Flight Duty Time Limitations (FDTL) came into force during the busy winter travel period.

Meanwhile, IndiGo also informed its passengers that refunds

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