A Westjet Encore de Havilland Dash 8-400, registration C-GWUE performing flight WS-3456 from Toronto,ON to Moncton,NB (Canada) with 12 people on board, was enroute at FL210 about 80nm eastnortheast of Toronto when the crew decided to return to Toronto after receiving a flaps power indication. The aircraft landed safely back in Toronto about 45 minutes after departure.
The Canadian TSB reported maintenance could not find any faults with the aircraft and suspected the L7 flap control circuit breaker may have been inadvertently pulled by a headphone cord.