A Flydubai Boeing 737-800, registration A6-FEU performing flight FZ-821 from Dubai (United Arab Emirates) to Jazan (Saudi Arabia), was climbing out of Dubai's runway 12R when the crew requested to level off at 7000 feet advising cabin crew informed them about an engine (CFM56) had ingested a bird, however, the engines were fine. A short time later the crew declared PAN PAN advising the engines were still fine, cabin crew however reported smoke in the cabin, they wanted to return to Dubai. The aircraft landed safely back on Dubai's runway 12L about 15 minutes after departure.

A replacement Boeing 737-800 registration A6-FDX reached Jazan with a delay of about 4 hours.

The occurrence aircraft remained on the ground for 25 hours, then returned to service.