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Decision to depart and continue flight in deteriorating weather led to aircraft accident at Lac de Gras, Northwest Territories

TSB Canada (Media)·Official·Jan 5, 2026
Decision to depart and continue flight in deteriorating weather led to aircraft accident at Lac de Gras, Northwest Territories
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The Transportation Safety Board of Canada (TSB) has released its investigation report (A23W0158) concerning a controlled flight into terrain involving a de Havilland DHC-6 Twin Otter aircraft operated by Air Tindi Ltd. The incident occurred at Lac de Gras, Northwest Territories, following the aircraft's departure on December 27, 2023.

According to the TSB report, the flight took off despite worsening weather conditions. The decision to continue with the flight was made even as visibility and other weather factors deteriorated. Unfortunately, this led to the aircraft losing altitude and ultimately colliding with the terrain. The findings highlight the critical importance of adhering to safety protocols, particularly when faced with adverse weather conditions.

The investigation revealed that the crew's decision-making process was influenced by various factors, including pressure to maintain schedules and operational demands. Such pressures can often cloud judgment, leading to potentially dangerous situations. Experts emphasize that pilots must prioritize safety over operational timelines, especially in challenging weather scenarios.

The report serves as a reminder of the inherent risks associated with aviation and the need for strict adherence to safety measures. The TSB's findings will likely prompt discussions within the aviation community regarding best practices for flight operations in adverse conditions.

In conclusion, the tragic incident at Lac de Gras underscores the vital need for continuous training and awareness among flight crews about the implications of weather on flight safety. As the aviation industry evolves, lessons learned from such accidents must be integrated into training programs to prevent future occurrences. The emphasis on safety in decision-making is paramount for ensuring the well-being of both passengers and crew.

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