Created Tuesday, Aug 9th 2022 17:31Z, last updated Tuesday, Aug 9th 2022 17:31Z
A Porter Airlines de Havilland Dash 8-400, registration C-GLQG performing flight
PD-9806 from Newark,NJ (USA) to Toronto City,ON (Canada) with 2 crew, was descending through 10,000 feet towards Toronto's Billy Bishop Airport when the crew experienced an uncommanded yaw of the aircraft to the left. A short time later the aircraft experienced another uncommanded yaw to the left associated with a brief change of torque by about 15%, a warning light briefly illuminated. The crew levelled the aircraft at 4000 feet, worked the related checklists and shut the right hand engine down in accordance with the procedures. The crew declared emergency and diverted to Hamilton,ON (Canada) for a safe landing on runway 30 about 35 minutes after the onset of trouble.
The Canadian TSB reported the crew was unable to identify which warning light had illuminated due to the briefness of the activation. Maintenance replaced the #2 Propeller Electronic Controller (PEC).
