What is known about the cause of the Delta flight crash at Toronto International Airport?

The cause of the Delta flight crash that flipped upside down during landing at Toronto International Airport remains unknown. Investigators are considering multiple potential factors including mechanical failure, weather-related issues, or possible miscommunication between the pilot and air traffic control. While details about the cause are still pending investigation by Canadian and U.S. authorities, what was highlighted in the clip was the exceptional response from first responders. According to airport CEO Deborah Flint, despite facing a worst-case scenario situation, emergency personnel demonstrated a 'textbook response' - arriving quickly, taking immediate action, and utilizing their high-level training effectively.