'2 pilots mandatory': DGCA tightens Char Dham helicopter norms after Uttarakhand crash; operators threaten shutdown The DGCA also directed that crews obtain positive destination and enroute clearance from the control room at Sahastradhara before taking off for each sector. Updated on: Nov 1, 2026, 21:02:50 IST By Neha LM Tripathi Prefer HTon Google Share via Copy link