The crew's failure to execute a missed approach and the flying pilot's (captain) failure to maintain directional control upon touchdown with a seven degree left bank and a right quartering tailwind. Factor's were the snow covered runway/landing area and the night conditions.

improper use of procedures by maintenance personnel at an overhaul facility during overhaul of the landing gear, allowing corrosion to occur on the barrel lugs of the landing gear, which subsequently led to fatigue cracking of the lugs and eventual collapse of the gear.