Italy Restores ATC Capacity to 75% After Network Disruption

ROME — Italy's air navigation service provider, ENAV, said it had restored air traffic management capacity to 75% on Friday, October 16, after overnight data-network problems forced restrictions across Italian airspace. A secondary satellite network was supporting operations while the primary network underwent restoration.

ENAV said contingency systems maintained normal capacity until 06:00 Italian local time. As traffic increased and the faults persisted, it introduced flow restrictions to maintain operational safety. An earlier bulletin put capacity at 50%.

The provider ruled out malicious activity in its initial statement. It said technical checks had traced the anomalies to the data-transmission network, while work continued to identify the underlying cause.

Preliminary figures show departure disruption

Aviation analytics company Cirium recorded 192 departures as canceled or “no fly” out of 2,398 scheduled from Italy in preliminary figures supplied to Airways on Friday, equivalent to 8.01% of the day's schedule. Its initial analysis reported an on-time departure rate of 31.33%, defining on time as departure within 14 minutes and 59 seconds of the scheduled time.

Milan Malpensa (MXP) had 34 departures in the canceled-or-no-fly category out of 298 scheduled, followed by Rome Fiumicino (FCO), with 29 out of 505. Milan Linate (LIN) recorded 16 out of 141, and Milan Bergamo (BGY) had 15 out of 156.

Those figures describe the initial snapshot, not the completed day's operations. The report did not state its data cutoff, define “no fly” or specify how many departures were used to calculate the on-time rate. It also did not give reasons for individual flights in the combined category, so the 192-flight total cannot be attributed entirely to the network disruption.

Backup communications sustain reduced operations

ENAV said its own equipment and systems were operating normally, while the secondary satellite network maintained safe flight operations but could not accommodate all traffic. It identified TIM as responsible for managing and maintaining the data network and said it was working with external providers to resolve the anomalies.

The company's communications-system documentation describes E-net as a ground-based network connecting area control centers, airports and neighboring international centers. It carries controller coordination, radar and weather data, and operational messages, with emergency channels using radio and satellite links. That architecture provides context; the disruption bulletins do not identify a specific failed component.

Eurocontrol describes traffic-flow management as balancing demand with available capacity. Continued air traffic control service therefore does not establish that the system can handle its normal flight volume.

In its 75% recovery bulletin, ENAV said it was working to restore the primary network and return to full capacity as quickly as possible. That statement did not specify a deadline.