A helicopter pilot was badly injured last spring during a firefighting mission near Nipigon when the chopper lost power and crashed due to an “incompletely” installed part in the aircraft’s tail rotor section, the Transportation Safety Board of Canada (TSB) has determined.
In a report released on Tuesday about the June 7 crash about 50 kilometres northeast of town, a TSB investigator wrote that a “seated retainer ring” had been incompletely installed when the Bell 214ST helicopter was being serviced.
“The consequences” of that, the inspector wrote, led “to a failure of the tail rotor drivetrain and consequent loss of tail-rotor thrust.”
The helicopter was owned by Helicopter Transport Services Canada, a firm near Ottawa.
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