The question still stands...if no definitive cause identified....thus allowing for a reliable method to prevent yet another catastrophic failure of the Rotor System as seen in the Norway crash....should the Authorities withdraw their approval of the aircraft to be flown?
It does not matter the Make, Model, Type, or Mark .... airplane or helicopter.....where should the line be drawn to ensure safety in these situations?
Should it be a mad game of Russian Roulette where you pays your money and takes your chances or should the Bar be set a bit higher than that?