GPS Disruptions Detected in Moroccan Skies, but Impact Remains Limited
Aircraft flying over Morocco have transmitted data showing occasional declines in GPS accuracy. The latest observations concern areas around Agadir and Tangier, among others. A specialist platform tracks these anomalies using navigation data broadcast by aircraft.
On November 13, one of the 153 aircraft detected within a 100-kilometer radius of Agadir-Al Massira Airport showed reduced positioning accuracy. In the Tangier-Ibn Battouta area, two aircraft were affected out of 1,464. These figures come from GPSInterference, which analyzes data transmitted by aircraft daily.
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Across Morocco, however, observations on November 13 show a limited situation: none of the areas monitored sufficiently by the platform reached the threshold for being classified as affected. Over the past 30 days, the average share was 4.9%, compared with 5.2% in the previous 30 days.
To create its map, the site uses ADS-B information broadcast by aircraft. These transmissions include an indicator of position accuracy called NACp. When its value falls to 7 or below, positioning uncertainty reaches at least 93 meters. The system then counts the aircraft among those with degraded accuracy.
Several phenomena may explain these anomalies: disruptive radio emissions, jamming of satellite signals, onboard equipment problems or local reception conditions. Their simultaneous presence on several aircraft in the same area may point investigations toward external interference.
