Tunis B736 near Munich on May 14th 2017, loss of cabin pressure

Last Update: October 5, 2017 / 18:04:20 GMT/Zulu time

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Incident Facts

Date of incident
May 14, 2017

Classification
Report

Airline
Tunisair

Flight number
TU-7045

Destination
Djerba, Tunisia

Aircraft Registration
TS-ION

Aircraft Type
Boeing 737-600

ICAO Type Designator
B736

A Tunisair Boeing 737-600, registration TS-ION performing flight TU-7045 from Prague (Czech Republic) to Djerba (Tunisia), was climbing through FL320 out of Prague already in German Airspace when the crew detected a loss of cabin pressure, donned their oxygen masks and initiated an emergency descent to FL100, the passenger oxygen masks were released. The aircraft subsequently diverted to Munich for a safe landing on runway 26L. There were no injuries and no damage to the aircraft.

Germany's BFU released their brief final report reporting the cause of the serious incident was:

A leaky valve at the bulk seal at the keel beam of the APU bleed duct was identified as reason for the depressurisation.

Another leakage was found in the area of the left-hand pack.

The BFU reported: "Both Cabin Pressure Controllers (CPC) were read out. Both had recorded the error High Cabin Air Leak Rate. One condition for this error being recorded is that the cabin pressure rate was more than 2,000 SLFPM (sea level feet per minute). After the irregularities had been eliminated a cabin pressure test was conducted which revealed leakage at the left-hand pack. After the left-hand pack had been closed down the leak tightness of the pressurized cabin was established and the aircraft cleared for service in accordance with the Minimum Equipment List (MEL) for a flight without passengers up to FL250."
Incident Facts

Date of incident
May 14, 2017

Classification
Report

Airline
Tunisair

Flight number
TU-7045

Destination
Djerba, Tunisia

Aircraft Registration
TS-ION

Aircraft Type
Boeing 737-600

ICAO Type Designator
B736

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