MUMBAI, May 2 -- The International Air Transport Association (IATA) has expressed "deep disappointment" with the Adani Group-operated Mumbai International Airport Limited (MIAL) for cancelling slots dedicated to cargo flights starting next season "unilaterally". In a statement released this week, the airline association said the move would "cause long-lasting damage to the airport's reputation and credibility" and wondered if it was aimed at shifting cargo flights to the upcoming Navi Mumbai International Airport (NMIA), also operated by the Adani Group. NMIA, with an annual capacity for 20 million passengers and 2.6 million metric tonne cargo, is in the final stages of completion. The new airport is expected to be inaugurated around August 15, and efforts are underway to obtain various approvals. P3...