Revised norms that caps ticket cancellation charges and bars airlines from levying additional amount for refund process are coming into force from first of next month. <br/><br/>Civil Aviation Minister Ashok Gajapathi Raju said on Wednesday in New Delhi that the cancellation amount will not to exceed basic fare plus fuel surcharge; all statutory levies and taxes to be refunded under all circumstances. <br/><br/>Issuing the revised regulations, the Directorate General of Civil Aviation also made it clear that airlines cannot levy additional charge to process the refund. <br/><br/>The move would come as a relief to air passengers against the backdrop of many carriers hiking the cancellation charges in recent times.