Monday afternoon updates showed JFK and LaGuardia reopening, while Newark remained stopped and reports differed on whether Philadelphia had resumed delayed operations or remained halted after a failed circuit-replacement attempt. [S1][S4][S5]
The FAA halted or grounded flights at several major East Coast airports after communications equipment serving Philadelphia-area air traffic control failed. [S1][S2][S3][S4][S5]
Officials said Philadelphia TRACON lost its primary circuit and then discovered that its backup fiber-optic line had been severed by a construction crew. [S1][S2][S3][S4][S5]
The disruption produced extensive cancellations, delays and diversions, although published totals covered different geographic scopes and update times. [S1][S2][S3][S4]
Verification result: verified, because five distinct reporting families directly support the central outage-and-ground-stop claim and no supplied validated contradiction challenges a material claim. [S1][S2][S3][S4][S5]
The chief limitation is that airport-status snapshots and disruption totals were not synchronized, so they do not establish one definitive final count or recovery time. [S1][S2][S4][S5]
