Canadian Aviation Regulations

901.35 (1) No pilot shall operate a remotely piloted aircraft system when icing conditions are observed, are reported to exist or are likely to be encountered along the route of flight unless the aircraft is equipped with de-icing or anti-icing equipment and equipment designed to detect icing.

(2) No pilot shall operate a remotely piloted aircraft system with frost, ice or snow adhering to any part of the remotely piloted aircraft.