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

A small passenger plane that crashed last month in Alaska, killing all 10 onboard, was nearly 1,000 pounds too heavy for the weather conditions, according to a preliminary report on the incident released Wednesday.

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