On 23 January 2019, a Bombardier DHC8-100 failed to complete its intended night takeoff from Rouyn-Noranda after it had not been commenced on or correctly aligned parallel to the (obscured) centreline and the steadily increasing deviation had not been recognised until a runway excursion was imminent. The Investigation attributed this to the failure of the crew to pay sufficient attention to the external perspective provided by the clearly-visible runway edge lighting whilst also noting the Captain s likely underestimation of the consequences of a significant flight deck authority gradient and a failure to fully follow relevant applicable operating procedures.