New Delhi, Nov. 13 -- The Aircraft Accident Investigation Bureau (AAIB) has called for stronger safety mechanisms in the Char Dham helicopter circuit, recommending that authorities establish a standard operating procedure (SOP) for sharing weather information with operators and ensure uninterrupted power supply for critical systems. In its interim report on the May 17 hard landing of a Pinnacle Air helicopter at Kedarnath, the accident investigating agency found that the pilot had not received weather updates due to a power outage. "It was reported that weather information was not shared between 08:54 hrs and 12:53 hrs due to a power cut and the unavailability of an alternative power backup for the computer," the report noted, adding that i...