On November 17, 2022, the Airbus 319-111 aircraft, registration marks G-EZBV, operated by easyJet UK Limited performing ferry flight EZY9002 after base maintenance from LBSF Sofia (Bulgaria) to London/Gatwick/ EGKK with two people on board. During the climb out phase shortly after take-off, approximately 10 min after departure, at FL290 a message Cabin Altitude Warning is appeared on ECAM. The pilots levelling off around FL300 and donned their oxygen masks. The cabin altitude was rising rapidly to about 9000 ft resulting in low cabin pressure, they declared "MAYDAY" and made the decision to return to LBSF. The flight crew set squawk 7700 on the transponder and initiated an emergency descent. During the descent the cabin pressure slowly recovered and at 10500 ft reached normal values. The aircraft landed safely on runway 27. There were no consequences for the flight crew.
