An Ikar Embraer ERJ-190, performing flight from Orsk to Moscow Sheremetyevo (Russia) with 76 passengers and 5 crew, showed incorrect fuel indication.

• Aircraft was enroute at FL340 about 100nm south of Kazan (Russia) when the crew decided to divert to Kazan due to incorrect fuel indications.
• The aircraft landed safely in Kazan.
• Passengers reported that the electrics failed completely on board. The cabin went completely dark and “deathly silent”.
• The airline reported the aircraft diverted for a technical malfunction. The passengers were rebooked onto the next flight out of Kazan.