A spokesman for the Directorate General of Civil Aviation told AFP: “The use of fifth-generation equipment on board aircraft could lead to interference hazards, which can lead to errors in height measurement.”
This phenomenon, caused by “interference in a signal from a frequency wave with a force equal to or higher than that of radar altimeters,” can lead to “critical errors, especially during the landing phase of equipment,” the French Directorate said.
The Directorate had last week released a bulletin containing information on the subject, instructing companies operating in the aviation sector.
This document provides for a number of preventive measures, the most important of which is to “switch off or operate all electronic devices running on the fifth generation system in flight mode”.
They added, “In the event of any disturbances, the flight crew shall notify the Air Navigation Services Operator to take the necessary practical steps and to notify the Regulatory Authority and the Airport Management Authority.”
The Directorate General of Civil Aviation noted that a framework has been put in place for the deployment of fifth-generation antennas on the ground to control the risk of interference with aviation systems during the landing phase at French airports.
This translates to reducing the transmission capacity of the fifth generation antennas currently deployed on French soil, “complementary technical analysis” announced in November by the Directorate of “Near 17 airports licensed for permanent landing operations” to “ensure that these stations meet the requirements of civil aviation”.
With regard to the remaining 123 airports in the French territory, the National Directorate for National Coordination with Frequencies is working closely with the National Agency for Frequency to monitor antennas installed nearby in the event of “any wind warnings”, the French Directorate announced on Tuesday.
In the middle of last month, the Telecom Regulatory Authority announced that 8,600 5G sites for commercial use by telecom operators were available in France at the end of December.