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From page 1...
... 1 Airfield ground lighting (AGL) is a major element of pavement visibility.
From page 2...
... 2 LED Airfield Lighting System Operation and Maintenance were introduced. Fluorescent lamps became a popular choice for guidance signs (although they have had performance issues in colder climates)
From page 3...
... Introduction 3 advisory_circulars/. Although incandescent lighting is mentioned in various sections, this guidebook is intended to address issues relating to the operation and maintenance of LED AGL systems and current industry practices.
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