The Delta Air Lines Inc. plane that flipped over as it landed in Toronto last month was warned about its rate of descent, according to a preliminary report released Thursday by the Transportation Safety Board of Canada.

A landing gear support broke as a Delta Air Lines regional jet was landing before it flipped upside down, leaving passengers “hanging like bats” at Toronto Pearson International in February, according to a preliminary report from Canada’s Transportation Safety Board.

A warning system on the Delta Air Lines flight that crashed at Pearson airport last month sent an alert indicating a high rate of descent less than three seconds before the plane touched down, according to a preliminary report.