FAA nationwide ground stop traced to contractor telecom work
The longest nationwide flight shutdown since 9/11 was reportedly caused by L3Harris crews switching a copper line to fiber; the FAA says there is no evidence of a cyberattack.
Confirmed
- The shutdown was the longest nationwide flight shutdown since 9/11
- Transportation Secretary Sean Duffy said a contractor was switching telecom lines from copper to fiber
Not yet known
- Whether L3Harris crews' copper-to-fiber switch caused the shutdown; this is reported, not confirmed
- Whether a cyberattack was involved; the FAA reportedly sees zero evidence of one
- What exactly triggered the shutdown and how the fix proceeds
What we know
Reuters reports Transportation Secretary Sean Duffy said the contractor was switching telecom lines from copper to fiber. The FAA reportedly sees zero evidence of a cyberattack. CNBC reported earlier the investigation had not yet identified a cause.

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“It wasn't a cyberattack and it wasn't SMART.”
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