Aviation regulator is forced to scale back new crew welfare rules after a cascading collapse in IndiGo’s operations triggers India’s worst aviation meltdowns in years Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice Indian airports are facing their worst operational