A Ryanair flight traveling from Greece to Germany returned safely to Thessaloniki shortly after takeoff Friday morning after a passenger window became dislodged during the flight, prompting a rapid cabin decompression and leaving one passenger in need of medical treatment, as reported by The New Post.

According to Ryanair, the flight from Thessaloniki to Memmingen departed at approximately 5:55 a.m. before turning back after the incident occurred at an altitude of roughly 20,000 feet.

Witnesses aboard the Boeing 737-800 told Greek media that they heard what sounded like a loud explosion moments before realizing the aircraft had experienced a decompression event.

One passenger told Radio Thessaloniki, as reported by Agence France-Presse, that the noise resembled "a tire bursting."

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"We immediately realised there had been a decompression. There were screams … for a moment I thought someone had accidentally opened the emergency door," the passenger said.

The passenger added that oxygen masks deployed immediately after the incident.

"The masks dropped, and there was a strong smell. The head and shoulders of one passenger were outside the window. Fortunately, he hadn’t taken off his seat belt."

According to CNN Greece, the injured traveler was identified only as a 61-year-old Serbian man.

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Greek media reported that investigators believe part of one of the aircraft's engines broke away and struck a passenger window, causing it to become dislodged. Officials had not publicly confirmed that cause at the time of publication.

Michalis Giannakos, president of the Panhellenic Federation of Public Hospital Employees in Greece, told reporters that fellow passengers helped restrain the man until the aircraft returned to the airport.

"His wife held him down for five minutes so he wouldn’t get out," Giannakos said.

"With the help of many passengers, they managed to pull him into the cabin."

Despite the emergency, the aircraft landed safely back at Thessaloniki Airport.

Passengers exited the aircraft and returned to the terminal before Ryanair arranged a replacement flight to continue their trip to Memmingen, located outside Munich, Germany.

Giannakos said the injured passenger was being treated for friction burns sustained during the incident.

In a statement provided to The New York Post, Ryanair confirmed the aircraft returned shortly after departure.

"A Ryanair flight from Thessaloniki to Memmingen on Friday morning (10 July) returned to Thessaloniki shortly after take-off when a passenger window dislodged in-flight," a Ryanair spokesperson said.

"The aircraft landed normally, and passengers returned to the terminal. One passenger requested and received medical assistance on the ground in Thessaloniki."

The airline did not immediately provide additional information regarding what caused the window to become dislodged or whether the aircraft had sustained additional damage.

No other injuries were reported.

The incident remains under investigation as authorities work to determine what caused the midair window failure and whether mechanical factors contributed to the emergency that forced the aircraft to abandon its scheduled flight to Germany.

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