On 5 January 2020, a Boeing 737-800 overran the wet snow contaminated landing runway at Halifax by almost 100 metres after a touchdown zone landing and a maximum deceleration effort followed a stabilised ILS approach to a shorter runway than originally intended which also had an out of limits tailwind component and was anyway flown contrary to required tailwind speed control. The Investigation found the crew had assumed the only significant difference between the initially planned and eventually used runways was the shorter length of the latter which was judged acceptable and no new landing performance data had been accessed.