Synopsis

• EUROCONTROL Agency has been informed by a European Air Navigation Service Provider of a number of occurrences of loosing the surveillance data for some aircraft. The loss of data was confined within a given geographical area.
• EUROCONTROL Surveillance Unit analysis suggests that the probable cause is interference sources transmitting on 1030MHz. Cases of similar interference in the past were associated with military or TV systems.
• This particular ANSP system has, in case of surveillance loss, a functionality that generates system tracks based on the flight plan data.

ICAO Provisions

ANSPs are reminded that ICAO PANS-ATM provides: