Re: [SystemSafety] power failure at Belgocontrol

From: SPRIGGS, John J < >
Date: Thu, 28 May 2015 07:36:40 +0000

I very much doubt that the linked article is correct when it says "The defect caused all control towers to fall short of electricity". It is more likely for them to "fall short of" flight plans, or other essential data, due to a central server going off line.


-----Original Message-----
Sent: 27 May 2015 20:01
To: systemsafety_at_xxxxxx Subject: Re: [SystemSafety] power failure at Belgocontrol

sorry, missed an important technical part:

The power cut was due to an overvoltage, which also damaged emergency generator switches. "Normally, the generators should take over, but because the excess current broke the control switches, this was rendered impossible. It was like Murphy's law", said Mr Dehaene.

The defect caused all control towers to fall short of electricity. The cause of the overvoltage itself, however, is yet to be found.

On 27 May 2015 at 20:51, Gergely Buday <gbuday_at_xxxxxx
> From the news:
> ---
> What happened this morning?
> At 9:45AM, power went down at Belgocontrol. Flights preparing for
> landing at that very moment were still allowed to ground on the strip.
> All other flights were redirected to airports in neighbouring
> countries. Emergency generator switches malfunctioned as well, leaving
> control towers completely out of electricity. “After that, we
> proceeded to a ‘clear the sky’ operation”, explained Belgocontrol
> spokesperson Dominique Dehaene.
> A grounded airplane at Brussels Airport
> The power outage temporarily shut down all air traffic in the country.
> However, fly-overs at 24,500 feet or higher were still allowed, since
> they are not a Belgocontrol responsibility.
> Eurocontrol declared that air traffic would be down for an indefinite
> amount of time. Airports all over Belgium were dealing with a
> significant number of delays. By now, most of the planes still in the
> air have been redirected to airports in neighbouring countries.
> ---

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systemsafety_at_xxxxxx Received on Thu May 28 2015 - 09:36:48 CEST

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