LOT E195 near Dusseldorf on Jan 24th 2022, sudden loss of cabin pressure

Last Update: March 23, 2022 / 09:30:58 GMT/Zulu time

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Incident Facts

Date of incident
Jan 24, 2022

Classification
Incident

Flight number
LO-233

Aircraft Registration
SP-LND

Aircraft Type
Embraer ERJ-195

ICAO Type Designator
E195

A LOT Polish Airlines Embraer ERJ-195, registration SP-LND performing flight LO-233 from Warsaw (Poland) to Brussels (Belgium), was enroute at FL340 about 210nm east of Dusseldorf (Germany) when the crew initiated an emergency descent reporting to ATC a sudden loss of cabin pressure. The passenger oxygen masks deployed. The aircraft descended to FL100 and diverted to Dusseldorf where the aircraft landed safely on runway 23L about 40 minutes after leaving FL340.

A replacement ERJ-195 registration SP-LNK positioned from Warsaw to Dusseldorf, resumed the flight and reached Brussels with a delay of 3.5 hours.

On Mar 23rd 2022 Germany's BFU reported the occurrence was rated a serious incident and is being investigated by the BFU. The aircraft was enroute at FL340 when there were variations of the cabin pressure, the cabin altitude initially reduced from 6990 to 5550 feet then began to climb again, the crew received a message "PRESN AUTO FAULT". The crew switched from automatic to manual pressure control and requested a descent and was immediately cleared to descend to FL320. Shortly after the cabin altitude warning activated, the crew initiated an emergency descent (average 5000 fpm). During the descent the cabin altitude climbed from initially about 7000 feet to 21.100 feet while descending through FL240. About 7 minutes after the onset of pressure variations and about 5 minutes after reaching the maximum cabin altitude the aircraft reached FL100 and the cabin altitude reduced to 10.000 feet. The aircraft diverted to Dusseldorf.

Following the flight the cabin pressurization control system (consisting of cabin pressure controller CPC and outflow valve) was tested with no findings. The CPC was replaced and sent for further analysis.
Incident Facts

Date of incident
Jan 24, 2022

Classification
Incident

Flight number
LO-233

Aircraft Registration
SP-LND

Aircraft Type
Embraer ERJ-195

ICAO Type Designator
E195

This article is published under license from Avherald.com. © of text by Avherald.com.
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