tuna hp
The certification standard is there not because someone in the hold would be injured or run out of useful consciousness; it is there to protect ALL the plane's occupants. In these planes the engines are far enough forward, that an uncontained failure would damage the pressure vessel, hence the reason the interior baggage door is a secondary pressure door. The engines on the Bombardier products are located so that the plane of a turbine blade failure is AFT of the aft pressure bulkhead, hence the lack of a restriction on those types.
GF