Delta Air Lines pushed back against online rumors and “misleading assertions” about the crew aboard Flight 4819, operated by its subsidiary Endeavor Air, which crashed while landing at Toronto Pearson Airport on Monday.

The flight’s captain was hired in October 2007 by Mesaba Airlines and served as an active duty captain and in pilot training and safety capacities, the airline said. Mesaba Airlines merged with Pinnacle Airlines in 2012, leading to the creation of Endeavor Air.

“Assertions that he failed training events are false. Assertions that he failed to flow into a pilot position at Delta Air Lines due to training failures are also false,” the airline said in a statement Thursday.

Endeavor Air hired the first officer in January 2024, and she has been flying with the airline since she completed her training in April. According to Delta, her flight experience time exceeded minimum federal requirements. The airline also said that “assertions that she failed training events are false.”

Fox News’ Andrea Margolis, Kristine Parks and Julia Bonavita contributed to this report.