Incident: Air Canada A320 at Toronto on Oct 18th 2009, hydraulics leak
An Air Canada Airbus A320-200, registration C-FZQS performing flight AC-173 from Toronto Pearson,ON to Calgary,AB (Canada), had encountered trouble with the nose wheel steering while taxiing to the departure runway 06L. The crew stopped the aircraft, reset the system and continued for takeoff. After the airplane had become airborne, hydraulics fluid was found on the taxiway, where AC-173 had stopped. The crew was advised, but elected to continue to their intended destination, where the airplane landed safely.
Source: The Aviation Herald