LONDON — Oil and gas operators could return their Eurocopter EC225s to service within weeks now that the European Aviation Safety Agency (EASA) has certified fixes to the bevel gear vertical shaft, a critical component in the main gearbox that drives lubrication pumps. The July 9 clearance by EASA ends a nine-month grounding of more than half the worldwide fleet of EC225 and EC725 helicopters imposed after air accident investigators concluded that two ditchings into the North Sea by ...

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