ED Decision 2021/003/R
ELECTRICAL SYSTEMS
The serviceability and reliability of air navigation equipment and installations are prerequisites for the safe operation of aircraft in the aerodrome area, but also for the regularity and efficiency of the air transportation system.
The required serviceability of installations and equipment can only be achieved if constant power supply is ensured.
To this end, regular maintenance work is required for aerodrome equipment and installations distributing primary power and equipment supplying the secondary power when there is such a need.
Special attention needs to be given to cases where there is interconnection between the electrical systems of the various components of the aerodrome (e.g. terminal building with lighting systems etc.).
Further guidance on the issue may be found in Chapter 3 of Part 9 ‘Airport Maintenance Practices’ of ICAO Doc 9137 ‘Airport Services Manual’.
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