De Havilland DHC-2 Beaver — Service Bulletins

This document is a Transportation Safety Board (TSB) recommendation regarding the installation of shoulder harnesses in commercial seaplanes, specifically addressing the safety of aircraft certified for nine or fewer passengers. The recommendation stems from an investigation into a fatal accident involving a de Havilland DHC-2 Beaver floatplane, which highlighted the risks associated with the lack of upper-torso restraints. The TSB argues that shoulder harnesses can significantly reduce the risk of serious injury or death in the event of an accident, particularly for occupants who may be incapacitated during a water landing. The document outlines the TSB's rationale for the recommendation, previous responses from Transport Canada, and ongoing assessments of the safety implications of not implementing the recommendation.

• The TSB recommends that all commercial seaplanes certified for 9 or fewer passengers be fitted with shoulder harnesses.
• The investigation into a DHC-2 Beaver crash revealed that lack of restraints contributed to fatalities.
• Shoulder harnesses can significantly reduce the risk of incapacitating injuries during accidents.
• Transport Canada has deemed retrofitting older aircraft with shoulder harnesses as not feasible.
• The TSB continues to assess Transport Canada's responses as unsatisfactory, advocating for improved safety measures.