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Approach light systems are a configuration of signal lights starting at the landing threshold and extending into the approach area, at a distance of 2,400 to 3,000 feet for precision instrument runways, and 1,400 to 1,500 feet for non-precision instrument runways.
A NOTAM closing Alton Bay was still active until 7:00 am that morning. As expected, the NOTAM closing the ice runway did expire and no new notification replaced it. Weather conditions on Groundhog Day were better than the week prior, characterized by a high ceiling and no thin screen of clouds hiding the ground from view.
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