• Delta Flight 104 experienced engine failure and burst into flames shortly after takeoff.
• Aircraft returned safely to São Paulo Guarulhos Airport.
• No injuries reported, but 28 flights cancelled and 14 diverted.
• Investigations underway by Brazilian and US authorities.
• Pratt & Whitney supporting investigation.

This incident may highlight the importance of engine maintenance and inspection procedures for airlines. The fact that the engine failure occurred during takeoff suggests a potential issue with the Pratt & Whitney PW4000 engine. Delta's response to the incident, including the prioritization of safety and rebooking of passengers, may also be seen as a model for other airlines to follow.