FOCA is authorising night flights for the calibration of the instrument landing system approaches

Genève Aéroport received the authorization to plan, in 2017, two series of flights to calibrate and check the proper functioning of the radio-navigation installations for Instrument Landing System (ILS) approaches. Those flights will be performed outside regular flight operation hours. The Federal Office of Civil Aviation (FOCA) has accepted the airport operator’s request accordingly. They will be carried out, at night, next March and September. 

International civil aviation standards impose a regular check of the proper functioning and accuracy of the navigation aids on airports. For this purpose, a specially equipped plane is used to make a series of approaches for landing. In Switzerland calibration flights are conducted under the monitoring of Skyguide, the authority responsible for airspace surveillance.

As calibration flights during the day are likely to disrupt air traffic, Genève Aéroport has requested from FOCA a special permission to plan them overnight, after the closure of the airport. FOCA has given a positive answer to this request by considering that calibration flights effectively disrupt air traffic and render flight operations more complicated.

Therefore, the airport is authorised to organise two series of calibration flights outside the regular hours of operation in 2017. The first series of flights will take place during the nights of 27-28 March and 28-29 March. The second series of flights are scheduled for 18-19 September and 19-20 September 2017

The nights of 29-30 March, 30-31 March, 5-6 April and 6-7 April 2017, as well as 20-21 September, 21-22 September, 9-10 October or 10-11 October 2017 are reserved to cope with additional needs or meteorological constraints.

Press release (FR) from the Federal Office of Civil Aviation (FOCA)
Contact: FOCA Communication, telephone 058 464 72 87




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