ON FINAL APPROACH TO RUNWAY 28, WITH WINDS FROM 230 DEGREES AT 20 KNOTS, GUSTING TO 28, THE AIRPLANE LOST ALTITUDE AND STRUCK A SNOW BANK 6 TO 10 FEET FROM THE APPROACH END OF THE RUNWAY. AS THE AIRPLANE PITCHED OVER, THE NOSE STRUT COLLAPSED, AND THE AIRPLANE SLID TO A STOP 50 FEET DOWN THE RUNWAY WHERE A POST IMPACT FIRE CONSUMED THE AIRPLANE.