MOSCOW, August 07./ITAR-TASS/. Pilots of civilian aircraft have reported incidents of failure of the GPS system in Moscow air space on Wednesday evening, two sources from the air traffic control service told ITAR-TASS.

One of them reported mass incidents of failure of the GPS system on board aircraft with reference to reports from at least twelve air crews.

The other source told ITAR-TASS that late on Wednesday around ten air crews reported incidents of failure of the GPS system, which was off for 5 -10 minutes, at the altitude from 9,000 to 10,000 meters.

No explanations of the causes of the failure of the navigation system are available yet.