All London Airspace Closed Due To Computer "Power Outage"; Update: Airspace Now Reopened With Limits

Update: John McClane appears to have arrived on the scene:

UPDATE NATS announcing Airspace is open. Restricting traffic volumes in accordance with capability. Live traffic: http://t.co/wi8XdHpV3I [4]

— AirLive.net (@airlivenet) December 12, 2014 [5]

UPDATE Many planes are in holding pattern over the channel. Live traffic: http://t.co/wi8XdHpV3I [4] pic.twitter.com/WN08MEHqfj [6]

— AirLive.net (@airlivenet) December 12, 2014 [7]

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A computer failure is affecting London airspace with potentially severe #flightdelay [8] http://t.co/21rtiLnmr8 [9]

— EUROCONTROL (@eurocontrol) December 12, 2014 [10]

As Bloomberg reports,

• *LONDON AIRSPACE AFFECTED BY COMPUTER FAILURE: EUROCONTROL
• *HEATHROW SAYS FLIGHTS CURRENTLY EXPERIENCING DELAYS
• *LUTON AIRPORT CITES POWER OUTAGE AT AIR TRAFFIC CONTROL CENTER

UPDATE:

• *NATS CONFIRMS TECHNICAL PROBLEM REPORTED AT SWANWICK CENTER
• *NATS SAYS INCIDENT RESPONSE TEAM HAS BEEN MOBILISED

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Heathrow has become a parking lot...

[11]

• *EUROCONTROL WARNS OF "POTENTIALLY SEVERE" LONDON FLIGHT DELAYS
• *ALL LONDON AIRSPACE CLOSED, EUROCONTROL SAYS

And flight delays are already spreading...

[12]

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BREAKING Power outage at control center affecting London airspace. Watch live traffic: http://t.co/wi8XdHpV3I [4] pic.twitter.com/KbpPE87YBe [13]

— AirLive.net (@airlivenet) December 12, 2014 [14]

How can planes land without ATC? pic.twitter.com/YEni2AYrbP [15]

— MineForNothing (@minefornothing) December 12, 2014 [16]

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Is the BTFD computer too busy to handle air traffic control too?