During the afternoon of 16 December, Stockholm Arlanda International Airport (ESSA) suffered a system breakdown to all its RWY and approach lighting systems. Consequently, the airport was closed to all incoming and outgoing traffic for approx. 90 minutes.
The closure caused all incoming flights to be diverted all over Sweden. The Swedish Air Line Pilots’ Association (SWEALPA)report that as of 21 December the actual causes of the initial breakdown, and why the backup systems failed, has not been fully determined, although a software problem is suspected to be the most likely cause. It is important to note that the full investigation into the failures will not be carried out until after the holiday season (mid-January at least).
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