Night-time flights to calibrate instrument landing system (ILS)


14.09.2020

The next session of calibration flights for Instrument Landing System (ILS) and Very high frequency Omnidirectional Range (VOR) installations will take place this evening, 14 September 2020, subject to weather conditions. This session could be extended to three nights. Daytime calibration flights will also be performed throughout the week.

Depending on the weather, the planned dates for this session’s night-time flights are:

  • The night from 14 to 15 September 2020
  • The night from 15 to 16 September 2020
  • Reserve night: from 16 to 17 September 2020

International civil aviation standards require regular checks on the proper functioning and accuracy of airport navigation aids. To this end, a specially equipped aircraft is used to conduct a series of approaches. In Switzerland, Instrument Landing System (ILS) calibration flights are carried out under the aegis of air surveillance authority Skyguide.

These calibration flights usually take place at night because they are likely to disrupt air traffic. In November 2019, Genève Aéroport sent a request for authorisation to the Federal Office of Civil Aviation (FOCA) which was accepted.

In spring, due to the significant drop in European air traffic resulting from the Covid-19 epidemic, these flights took place during the day.

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