A Delta Airlines flight from Atlanta that was forced to double back and make an emergency landing in February was filled with such thick smoke that pilots needed to wear oxygen masks, and flight attendants struggled to see passengers beyond the first row,

The National Transportation Safety Board released the preliminary report for a Delta Air Lines flight from Atlanta to Charleston that had to be evacuated after smoke filled the cabin.

The smoke that filled the cabin of a Delta flight as it took off from the Atlanta airport in February was so thick that the lead flight attendant had trouble seeing past the first row of passengers and the pilots donned oxygen masks as a precaution.