On 25 February 2017, an Airbus A320 left the side of the landing runway at Toronto when, for undetermined reasons, the Captain, as Pilot Flying, set up a drift to the right just before touchdown. This was then followed by a lateral runway excursion into wet grass in rain-reduced visibility which continued for 1,650 metres before the aircraft regained the runway and stopped. The Investigation noted that both the absence of runway centreline lighting and the aircraft operators policy of not activating the aircraft rain repellent system or applying the alternative hydrophobic windshield coating may have increased the excursion risk.