A commuter plane that fell from the sky as it flew over Alaska’s Norton Sound last month was more than 1,000 pounds overweight at the time of takeoff, according to a preliminary report released by

A preliminary report from the National Transportation Safety Board said the commuter plane that crashed in Alaska, killing 10, was overweight for the weather.

All 10 people on board were killed when the plane, flying in poor visibility, plunged into sea ice near Nome in February.