AC3 questions with correct answers

VASI installations may consist of either how many light units arranged in bars referred to as near, middle, and far bars? - Correct Answer-2, 4, 6, 12, or 16 Which legs are sometimes called point-to-point legs? - Correct Answer-track to a fix The VASI lights are visible from 3-5 miles during the day and up to how many miles or more at night? - Correct Answer-20 Which guidance is provided by the runway lights? - Correct Answer-lateral course What will displace SCAT-I DGPS as the public use service? - Correct Answer-Catergory 1 GBAS What provides the basic means to transition from instrument flight to visual flight for landing? - Correct Answer-ALS What does ALS stand for? - Correct Answer-Apporach Lighting System Which Vasi installations provide one visual glide path which is normall set at 3 degrees? - Correct Answer-two-bar The visual glide path of the VASI provides safe obstruction clearnace within plus or minus how many degrees of the extended runway centerline and to 4 NM from the runway threshold? - Correct Answer-10