Page 142 - UK ADR Aerodrome Regulations (Consolidated) October 2021

Part OPS - ANNEX IV - Operations Requirements - Aerodromes

become frozen.
(e) Macrotexture and microtexture are taken into consideration in order to provide the
required surface friction characteristics. This normally requires some form of special
surface treatment.

ADR.OPS.C.015 Visual aids and electrical systems
The aerodrome operator shall establish and ensure the implementation of a system of corrective and
preventive maintenance of visual aids and electrical systems to ensure lighting and marking system
availability, reliability and compliance.
ADR.OPS.C.015 AMC1 Visual aids and electrical systems
GENERAL
(a) The aerodrome operator should establish a system of corrective and preventive
maintenance which ensures that a light is deemed unserviceable when the main beam
average intensity is less than 50 % of the value specified in the applicable CSs. For light
units where the designed main beam average intensity is above the specified in the
applicable CSs, the 50 % value should be related to that design value.
(b) The aerodrome operator should establish a system of preventive maintenance of visual
aids to ensure lighting and marking system reliability and serviceability as required for the
intended operations.

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