A17-01 - Stall warning systems – DHC-2

A17-01 – “The Department of Transport require all commercially operated DHC-2 aircraft in Canada to be equipped with a stall warning system.”

Transport Canada Response to Recommendation A17-01

Transport Canada (TC) agrees in principle with the recommendation.

TC agrees that stalls encountered during critical phases of flight often lead to disastrous consequences. Although the historical accident rate does not indicate that there is any particular stall-related problem with the DHC-2 Beaver when it is flown within its certified envelope, the installation of an Artificial Stall Warning System can enhance operational safety. TC acknowledged this fact with the publication of Civil Aviation Safety Alert (CASA) 2014-02Footnote 1 recommending installation of Viking Air’s artificial stall warning system.

Mandating the installation of a stall warning system on all commercially operated DHC-2 aircraft in Canada will require further study, evaluation, and justification by TC. In 2018, the department will initiate an in-depth examination of the issue, particularly to determine how many accidents would have been prevented by a functioning artificial stall warning system. Following this evaluation the department will determine the most effective means of addressing the risks underpinning this recommendation and then outline its plan and consult industry stakeholders.

TC will continue to participate in and support international efforts to improve passenger safety, particularly through the International Civil Aviation Organization (ICAO) passenger Safety Working Group and follow-on activities with a view to harmonization with international partners.