Sibir A319 near Prague on Apr 16th 2014, loss of cabin pressure

A Sibir Airlines Airbus A319-100, registration VP-BTO performing flight S7-797 from Moscow Domodedovo (Russia) to Munich (Germany), was enroute at FL340 about 70nm northeast of Prague (Czech Republic) when the crew initiated an emergency descent due to the loss of cabin pressure levelling off at FL100 about 6 minutes later (average rate of descent 4000 fpm). The aircraft continued to Munich at FL100 and landed safely about 45 minutes after leaving FL340.

Czech's UZPLN reported in their quarterly bulletin that the area control center of Prague coordinated the emergency descent. An unknown technical problem caused the loss of cabin pressure.