New Delhi, May 24 -- India's aviation regulator grounded two pilots who operated an IndiGo flight from Delhi to Srinagar on Wednesday after it flew through severe hailstorm, officials said on Friday as new details emerged of their interaction with traffic controllers in Lahore and Srinagar amid what was a narrow escape for the 227 people on board. The DGCA said in a statement that the Airbus A321 Neo at one point plummeted at 8,500 feet per minute.P8...