The regional airline flight in Alaska that crashed, killing all 10 people onboard, was overweight before it took off, according to a preliminary report released Wednesday by the National Transportation Safety Board.

The Alaska commuter plane that disappeared last month before its wreck was discovered with all 10 onboard dead was more than 1,000 pounds overweight at the time of takeoff, according to details of a preliminary investigation released Wednesday.

A commuter plane that crashed on sea ice off Alaska, killing all 10 people on board, was half a ton overweight for a trip into icy conditions, the National Transportation Safety Board said in a preliminary report released Wednesday.