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AAIB Identifies Rotor Strike on Overhead Cable as Cause of Uttarkashi Helicopter Crash

Supported by investigators from the US National Transportation Safety Board, Canada’s Transportation Safety Board, Rolls-Royce experts, the AAIB is analysing the May 8 accident to shape stricter helicopter safety measures.

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Overview

  • The Bell 407’s main rotor blade struck an overhead fibre cable during an attempted emergency landing on NH-34, triggering a crash that killed six people onboard and critically injured one.
  • After the cable impact, the aircraft tumbled about 250 feet into a gorge and came to rest against a tree with no post-crash fire reported.
  • Records show the 17-year-old helicopter was airworthy with inspections current to April 25 and that pilot Robin Singh, 59, had accumulated 6,160 flight hours.
  • Investigators secured perishable evidence and operational records and have invited representatives from the NTSB, Canada’s TSB and a Rolls-Royce technical advisor to aid the ongoing probe.
  • The Uttarakhand government has formed a high-level committee to draft standard operating procedures for helicopter services, with recommendations due by August 15 to enhance pilgrimage transport safety.