A Russian pilot inadvertently put the wheel brakes on during takeoff, causing a crash that killed 44 people including a professional ice hockey team, investigators said Wednesday, citing lax oversight and insufficient crew training as key reasons behind the error.

The Interstate Aviation Committee said the Sept. 7 crash of the Yak-42 plane near Yaroslavl in central Russia occurred because one of the two pilots accidentally activated the brakes and then yanked a control wheel to his chest, pulling the plane up too sharply in a desperate attempt to take off.

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