Smartwings B737 near Belgrade on Jul 15th 2016, loss of cabin pressure

Last Update: October 26, 2016 / 15:41:01 GMT/Zulu time

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Incident Facts

Date of incident
Jul 15, 2016

Classification
Incident

Airline
Smartwings

Flight number
QS-2670

Destination
Bodrum, Turkey

Aircraft Registration
OK-SWW

Aircraft Type
Boeing 737-700

ICAO Type Designator
B737

A Smartwings Boeing 737-700, registration OK-SWW performing flight QS-2670 from Prague (Czech Republic) to Bodrum (Turkey), was enroute at FL410 about 25nm south of Budapest (Hungary) when the crew received indication the right hand "BLEED OFF" indication and a Master Caution for the Air Conditioning system. The crew requested and was cleared for a descent to FL350. While working the checklists the crew concluded they were not able to control the cabin pressure, at the same time the "Cabin Altitude" warning occurred prompting the crew to don their oxygen masks and initiate an emergency descent to FL100 while about 110nm north of Belgrade (Serbia), still in Hungarian Airspace. The aircraft diverted to Belgrade (Serbia) for a safe landing on runway 30 about 37 minutes after leaving FL410.

The aircraft departed Belgrade after about 6 hours on the ground and returned to Prague, maximum cruise level FL120.

Czech UZPLN reported the aircraft had been dispatched under minimum equipment list requirements with item 36-5. Following landing maintenance found the pressure shut off valve (PRSOV) was defective and replaced the PRSOV. Subsequent tests of valve and aircraft leakage found no anomaly, the aircraft returned to service.
Incident Facts

Date of incident
Jul 15, 2016

Classification
Incident

Airline
Smartwings

Flight number
QS-2670

Destination
Bodrum, Turkey

Aircraft Registration
OK-SWW

Aircraft Type
Boeing 737-700

ICAO Type Designator
B737

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