No one was injured when the pilot of a Summit Helicopters helicopter carrying four passengers to a guest lodge north of Terrace encountered whiteout and foggy conditions, causing him to lose sight of the ground before briefly touching down hard on the frozen surface of Treston Lake, a Transportation Safety Board investigation has concluded.
"Once the helicopter was over the snow-covered lake, the pilot found himself in conditions of flat light, whiteout, and fog that reduced his ability to effectively assess his speed, attitude, and altitude," the transportation board indicated concerning a flight that began at the Northwest Regional Airport Terrace-Kitimat just minutes before.
The transportation board said Summit has added the incident's factors into its annual training regarding decision-making, situational awareness and workload management. Investigators also determined"that given the short duration of the flight, the pilot’s expectation of suitable weather conditions, a risk level that was assessed as low, and the underlying commercial pressure, the pilot decided to depart on a visual flight rules flight with localized fog conditions that were forecast on the planned route."
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