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This technical specification: - outlines a methodology to address the safety at all lifecycle phases of an AGL system, including the evaluation, design, procurement, manufacture, installation, commissioning, operational use, maintenance, modification, and decommissioning of the AGL system; - - applies to an AGL system at an aerodrome or heliport which provides visual guidance to a pilot and is provided, operated and maintained by the aerodrome authority; - - applies primarily to a new AGL system;