There wasn’t something significantly sinister concerning the Notice to Air Missions (NOTAM) outage that prompted the Federal Aviation Administration to floor US flights on Wednesday — it seems to have been a comparatively easy glitch. As a part of its early investigation, the FAA has determined that the outage was prompted by a “damaged database file.” The company remains to be working to determine the precise causes and stop repeat incidents, however says there’s nonetheless “no evidence” of a cyberattack.

The FAA grounded all home departures within the US on Wednesday morning after the NOTAM system failed the afternoon earlier than. This was the primary such failure within the nation, and it prompted a whole bunch of delays that took hours to resolve. NOTAMs present essential details about potential issues alongside a flight’s path, reminiscent of runway closures and momentary airspace restrictions.

The preliminary findings could also be reassuring for these involved the outage might have stemmed from one other important infrastructure hack. However, it nonetheless leaves some unanswered questions concerning the fragility of NOTAM within the US. A single corrupted file was apparently all it took to disrupt flights nationwide for over half a day — no matter redundancy was in place clearly wasn’t sufficient.

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