Enter B738 near Sofia on Apr 2nd 2023, loss of cabin pressure
Last Update: September 15, 2023 / 16:05:30 GMT/Zulu time
Poland's PLBWL reported the aircraft had been dispatched under minimum equipment list requirements and therefore maintained FL240 for cruise. At the control zone of Sofia the crew received a cabin pressure warning, worked the related checklists, commenced an emergency descent to FL120 and analysed the situation. The crew subsequently decided to continue the flight to Katowice. The occurrence was rated an incident and is being investigated by the PKBWL.
On Sep 15th 2023 the PKBWL released their resolution in Polish effectively ending the investigation stating that the cause of the occurrence was the rupture of a pressure seal in the forward zone that together with the inoperative right hand pack caused the cabin altitude to increase. The aircraft had been released under MEL with the right hand bleed air valve inoperative and the right hand pack disabled limiting the aircraft to FL250.
This article is published under license from Avherald.com. © of text by Avherald.com.
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