7.2.3 Maintenance of the remote tower system facilities

Where remote aerodrome ATS is provided, the maintenance programme of the remote tower systems at the aerodrome should cover the maintenance needs of the facilities, installations and equipment, including electrical systems, which enable and support the remote aerodrome ATS. Such arrangements should also specify the maintenance responsibilities of the involved organisations. A preventive maintenance programme should be established and implemented. Such a programme should contain information related to scheduled maintenance work in order to prevent a failure or degradation of such facilities, installations and equipment. The preventive maintenance programme should be based on the maintenance instructions of the manufacturer of the respective facility, installation and equipment, as appropriate, and should contain all the necessary information for its timely and correct implementation, including but not limited to: the type of inspections/checks to be carried out (e.g. visual inspection, cleaning of equipment, equipment stability/alignment, calibration, etc.) for each facility, installation and equipment, taking also into account factors such as their location and meteorological phenomena; the frequency of inspections/checks for each facility, installation and equipment; the tools and equipment required for each type of inspection/check; and the periodic replacement of parts of equipment that may be required. Arrangements should be in place to ensure that timely corrective maintenance action is taken to ensure safety and regularity of services. Such arrangements should cover the cases of maintenance needs that are: identified either during preventive maintenance activities; or raised at any other time (e.g. due to equipment malfunction or failure).