THY B738 near Istanbul on Aug 5th 2014, cabin did not pressurize

A THY Turkish Airlines Boeing 737-800, registration TC-JFY performing flight TK-1901 from Istanbul Sabiha Gokcen (Turkey) to Milan Malpensa (Italy) with 96 passengers, was climbing out of Sabiha Gokcen Airport when the crew stopped the climb at FL240 due to problems with the cabin pressure and diverted to Istanbul's Ataturk Airport for a safe landing on runway 05 about one hour after departure.

A replacement Boeing 737-800 registration TC-JGK reached Milan with a delay of 2.5 hours.