Eurocontrol says London airspace closed due to computer failure;

A screen shot taken from planefinder.net of aircraft approaching British airspace at 15:45 GMT, Friday, Dec. 12, 2014. The European air control agency Eurocontrol says London airspace has been closed due to a computer failure. Officials at London Heathrow Airport said Friday there is a power outage at the NATS control center in Swanwick, England. Its statement gave no indication how long this situation was expected to continue. (AP Photo/planefinder.net) (The Associated Press)

Undated handout photo issued by NATS via the Press Association of the National Air Traffic Control Centre at Swanwick in southern England. The European air control agency Eurocontrol says London airspace has been closed due to a computer failure. Officials at London Heathrow Airport said Friday there is a power outage at the NATS control center in Swanwick, England. Its statement gave no indication how long this situation was expected to continue. (AP Photo/NATS, PA) UNITED KINGDOM OUT NO SALES NO ARCHIVE (The Associated Press)

This is an undated handout photo issued by NATS via the Press Association of the National Air Traffic Control Centre at Swanwick southern England. The European air control agency Eurocontrol says London airspace has been closed due to a computer failure. Officials at London Heathrow Airport said Friday Dec. 12, 2014 there is a power outage at the NATS control center in Swanwick, England. Its statement gave no indication how long this situation was expected to continue. (AP Photo/NATS, PA) UNITED KINGDOM OUT (The Associated Press)