The TSB – Transportation Safety Board of Canada has released their report on the suspected drone/aircraft collision over Quebec in October 2017:
The damage was limited to a dent at the point of impact on the left wing de-icing boot, as well as scratches on the upper surface of the left wing. The damage was minor and had no effect on the airworthiness of the aircraft. The aircraft was returned to service the same day.
The investigation was unable to identify the operator of the drone involved in the collision with the Sky Jet M.G. Inc. aircraft. No debris from the drone could be found, and it could not be determined with certainty whether it was used for recreational or non-recreational purposes.
The CYQB control tower had not been informed of any UAV activity in the Class C control zone under its jurisdiction, no SFOC had been issued, and no Notices to Airmen had reported any such activity on 12 October 2017. The presence of a drone within controlled airspace had not been detected by the radar in the CYQB control tower. Because neither TC nor NAV CANADA was aware of this drone operation in the control zone, the investigation concluded that the regulations governing the operation of drones were not followed.
It is still unclear as to if this was a drone or misreporting of another object, given that no evidence was found to positively identify the drone or operator. While we do not deny it may have been a drone, the evidence seems thin.