Feb. 9: Transportation Safety Board Releases Report on Helicopter Crash

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The Transportation Safety Board today released its final report on the fatal 2009 crash of Cougar Flight 91 off the coast of NL. Key recommendations:

  • Removal of the “extremely remote” provision from the rule requiring 30 minutes of safe operation following the loss of main gearbox lubricant

  • Assessment of the adequacy of the 30 minute main gearbox run dry requirement for Category A transport helicopters

  • Ban on commercial operation of Category A transport helicopters over water when the state of the sea won’t permit safe ditching and successful evacuation

  • Requirement that supplemental underwater breathing apparatus be mandatory for all occupansts of helicopters on overwater flights who must wear Passenger Transportation Suit Systems.