The estimated gross takeoff weight was about 1,058 pounds over the limit for icy conditions, according to a preliminary NTSB report.

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

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