The collision was averted after an automatic warning alerted the pilots of the two planes, an official said. The Air India official said the AI aircraft was going according to the instructions from the air traffic control. But it seems that something had gone wrong between the Vistara pilot and the ATC as the Vistara aircraft kept descending while the ATC was giving different instructions. The Air India pilot's action was perfect as she followed the resolution advisory and steered the aircraft to a safer distance, it added. "The AAIB has cleared our pilot for flying," the Air India official said, while lauding her timely action.

Source: The Telegraph February 11, 2018 21:22 UTC