ED Decision 2021/003/R
ELECTRICAL SYSTEMS
(a) Schedules of routine maintenance of the individual elements of the aerodrome’s electrical systems should be based on manufacturers' instructions, adjusted to the aerodrome operator's experience regarding the frequency of malfunctions.
(b) The maintenance programme should, as a minimum, include the following:
(1) power cables and distributors in field;
(2) transformers and regulators;
(3) transformer stations for electric power supply;
(4) relay and switch cabinets;
(5) control cables, monitoring units and control desk;
(6) secondary power supply; and
(7) fixed ground power supply for aircraft,
and should contain the frequency of the scheduled maintenance activities and the elements that should be checked during each inspection.
(c) Checklists to be used during the scheduled maintenance activities should be developed by the aerodrome operator.
(d) The relevant procedures should cover the maintenance activities for each area, including the way such activities should be implemented.
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