'Biohazard' causes Delta flight to turn back: 'Diarrhea all the way through the plane,' pilot tells air traffic control

A transatlantic Delta Airlines flight was forced to turn around after the pilot reported a "biohazard" by way of a passenger's diarrhea that the pilot said had made its way through the airplane.

The Delta flight was on its way to Barcelona from Atlanta, the Daily Beast reported, but was turned around just two hours into the trip. A recording of the Delta Airlines Airbus A350 pilot communicating to his air traffic control contact was posted online:

"Negative. It's just a biohazard issue [inaudible]. We had a passenger [who] had diarrhea all the way through the airplane," the pilot is heard saying. "They want us to come back to Atlanta," he added.

Delta Airlines told Business Insider that the flight crew had a "medical issue" on board and that the plane had to be returned to Atlanta in order to be cleaned. The company's representative did not disclose the nature of the issue, however.

"Delta flight 194 from Atlanta to Barcelona returned to Atlanta following an onboard medical issue," the spokesperson said.

"Our teams worked as quickly and safely as possible to thoroughly clean the airplane and get our customers to their final destination. We sincerely apologize to our customers for the delay and inconvenience to their travel plans," the statement added.

In a picture of an alleged FAA flight strip, the text read, "Divert to ATL- Passenger diarrhea all over A/C- Biohazard."

Another image allegedly showed an X account asking about the same flight.

"@Delta any idea what's going on ... in flight for almost 2 hours and now heading back to Atlanta with my son on board. Would like an update," the X post read.

In response to a report about the flight, blogger and sports commentator Dan Katz asked, "Does this make me a bio terrorist?" to which the same X account replied, "My son was on this flight to Barcelona. He took a pic of said infraction. The mess is all up and down the aisle on the carpet. Truly amazing how that even happens!"

The eight-hour trip was initially cut short, but the same plane was reportedly used to eventually get passengers to their destination the next day.

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