Serious incident to the Airbus A320 registered VT-IAR and operated by Indigo on 27/04/2017 en route [Investigation led by AIB / India]

Preliminary data based on the notification frorm the authorities of India :

While operating flight 6E-725 from Kolkata to Hyderabad was involved in an incident of flight crew (First Officer) incapacitation. After the incapacitation of flight crew, MAYDAY was declared and aircraft was diverted to Bhubaneshwar.