IndiGo's ongoing operational turmoil has now triggered a sharp public criticism from one of Indian aviation's senior professionals. Former aviation veteran Shakti Lumba has released a blistering open letter alleging a "toxic culture" inside IndiGo, saying the airline's management fostered fear, overwork and arrogance long before the current crisis. The airline cancelled more than 1,600 flight on Friday alone. Advertisement

Sharing the letter on X, Lumba wrote, "The open letter posted below in not an employee's grumble. It’s a cry for help. It highlights how and why IndiGo meltdown took place: The toxic culture of the Airline Management the harassment and demeaning of ALL employees whatever their department and the Management attitude ‘We are too Big to fail’…Heads must roll, @MoCA_GoI @D

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