More than likely just another engine failure on take off with a light twin. The plane was designed with a 8000 MTOW with 450HP a side. They increase the MTOW to 12,499 and put 680SHP aside. They move the engines forward for CG reasons. Takeoff and VMC in a piston Goose was around 70 mph. Probably the turbine takes off close to the same speed. But with the increase in MTOW, Engine HP, and the engine being placed around 4 feet further forward and no changes to the rudder I doubt VMC stayed at 70mph. Also seeing it is under 12,500 only one pilot required on N number. I cant speak for the Goose but on the HU-16 the PF is going to have both hands and one leg very busy with an engine out on takeoff, even with rudder boost. It is the PNF job to hit the feather button (hopefully the correct one) and adjust the working engine power as required. If directional control or roll is an issue it would be reducing power, if not, giving it as much as the PF could take and keep it flying. Off course with runway remaining or a water takeoff with no obstructions PNF just closes both.