Transport Canada says it is investigating the sighting of a possible drone by the pilots of a commercial Jazz aircraft on a flight from Halifax to St. John's.
The sighting occurred Aug. 3.
The pilots of the Bombardier aircraft reported seeing a red and white vertical tube with a rotor less than 300 metres above the aircraft.
Transport Canada says it is trying to determine whether a violation occurred and whether enforcement action is required.
By law, operators of commercial unmanned aerial vehicles must obtain a special flight operations certificate from Transport Canada.
The department must also be informed of the vehicle's proposed flight path.