9/5/2023 0 Comments Aviation localizer![]() The approach plate displays the Morse code pattern.Three letter id preceded by I (i.e., I-DAB).Identification is in International Morse Code and consists of a three-letter identifier preceded by the letter I (-) transmitted on the localizer frequency.All charted procedures with localizer coverage beyond the 18 NM SSV have been through the approval process for Expanded Service Volume (ESV) and validated by flight inspection.The areas described and depicted in represent a Standard Service Volume (SSV) localizer.ATC may clear aircraft on procedures beyond the service volume when the controller initiates the action or when the pilot requests, and radar monitoring is provided.Unreliable signals may be received outside of operational service volume areas.From 10 to 35° on either side of the course along a radius of 10 NM.To 10° on either side of the course along a radius of 18 NM from the antenna and.Proper off-course indications are provided throughout the following angular areas of the operational service volume:.The localizer provides course guidance throughout the descent path to the runway threshold from a distance of 18 Nautical Miles (NM) from the antenna between an altitude of 1,000 feet above the highest terrain along the course line and 4,500 feet above the elevation of the antenna site.Adjusted for a course width of (full-scale fly-left to a full scale fly-right) of 700' at the runway threshold.The localizer signal transmits at the far end of the runway.Do not use back course signals for approach unless there is a published back course approach procedure for that particular runway and Air Traffic Control (ATC) authorizes the approach This "flying away from the needle" is also required when flying outbound on the localizer's front course. Unless the aircraft's Instrument Landing System (ILS) equipment includes reverse sensing capability, when flying inbound on the back course, it is necessary to steer the aircraft in the direction opposite the needle deflection when making corrections off-course to on-course. Some localizers may transmit the course line along the extended centerline of a runway, in the opposite direction to the front course, which is called the back course.The localizer's approach course, used with other functional parts (glide-slope, marker beacons, etc.), is called the front course.Instrumentation operates between 108 - 111.95 MHz on one of 40 channels that transmits from a ground node. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |