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一、原文观赏？A localizer type directional aid (LDA) is a type of localizer-based instrument approach to an airport. It is used in places where, due to terrain and other factors, the localizer antenna array is not aligned with the runway it serves.因为地形、减噪、空域放手等成分的影响，某些机场面提供的航向谈并不是瞄准跑谈，而是有一定的夹角，这种进近神色即为LDA进近。
Localizer Type Directional Aid (LDA)这个想法应该来自于FAA的AIM中，也即是航空信息手册中，其手册中的原文界说如下：
1. The LDA is of comparable use and accuracy to a localizer but is not part of a complete ILS. The LDA course usually provides a more precise approach course than the similar SimplifiedDirectional Facility (SDF) installation, which may have a course width of 6 or 12 degrees.LDA和航向谈进近很一样，然而不是盲降的一部分，LDA与SDF比拟一般都是会提供一个更精准的进近航谈，会宽6-12度。图片
2. The LDA is not aligned with the runway. Straight−in minimums may be published wherealignment does not exceed 30 degrees between the course and runway. Circling minimums only are published where this alignment exceeds 30 degrees.LDA不和跑谈的场所一致，当跑谈和航谈的夹角莫得高出30度时，不错标出直线进近标准，盘旋标准唯有当角度大于30度时不错标注。
app3. A very limited number of LDA approaches also incorporate a glide slope. These are annotated in the plan view of the instrument approach chart with a note, “LDA/Glide slope.” These procedures fall under a newly defined category of approaches called Approach with Vertical Guidance (APV) described in paragraph 5−4−5, Instrument Approach Procedure Charts, sub paragraph a7(b), Approach with Vertical Guidance (APV).有些很少的LDA身手会合装一个下滑谈，这种身手在航图中会标注“LDA/GLIDE SLOPE”的标注，这些身手即是常说的APV身手，也即是类精密进近身手。
LDA minima for with and without glide slope is provided and annotated on the minimalines of the approach chart as S−LDA/GS and S−LDA. Because the final approach course is notaligned with the runway center line, additional maneuvering will be required compared to an ILS approach.关于LDA身手来说，有下滑谈和莫得下滑谈时，在航图的标准一栏上会标注不同的S-LDA/GS大略S-LDA等不同的标注，由于咱们知谈LDA身手的临了进近航迹和跑谈中线不是对皆的，是以和盲降比拟，LDA身手需要相应的稀奇天真航行。
二、属性分析回想？0.LDA自己瑕瑜精密进近，然而LDA进近身手中少量带有下滑谈神色，此时的LDA/GLIDE SLOPE即是类精密进近。LDA with glidepath is kind of Approach with Vertical Guidance (APV).
1. A LDA is essentially a localizer, but it is termed LDA because the course alignment with the runway exceeds 3°.LDA实质上即是LOC，小程序开发公司之是以叫LDA是因为航向谈和跑谈中线夹角高出3°
2.LDA does not offer a navigable back course.LDA不提供适用于导航的背航谈（back course）
3.The LDA is of comparable use and accuracy to a localizer but is not part of a complete ILS.LDA和LOC的作用和精度相等，但不是竣工的ILS系统的一部分。
4.The LDA is not aligned with the runway.Straight−in minimums may be published where alignment does not exceed 30 degrees between the course and runway. Circling minimums only are published where this alignment exceeds 30 degrees.LDA和跑谈场所不一致。当和跑谈中心夹角不高出30度时，公布直线进近最低标准。夹角高出30度时，只公布盘旋最低标准.
2、排列三5码组六统计：截止第2024180期，排列三已开出了6952期奖号了，其中组六号码出现了4952次，组三出现了1926次，豹子出现了74次。
1、排列三最近两期百位号码分别开出5和2，历史上百位号码连续两期分别开出5和2的奖号出现了67期。前五期开出之后其下期奖号分别为：519、575、411、549、538；
5. A very limited number of LDA approaches also incorporate a glideslope. These are annotated in the plan view of the instrument approach chart with a note, LDA/Glideslope.” These procedures fall under a newly defined category of approaches called Approach with Vertical Guidance (APV) , LDA minima for with and without glideslope is provided and annotated on the minima lines of the approach chart as S−LDA/GS and S−LDA. Because the final approach course is not aligned with the runway centerline, additional maneuvering will be required compared to an ILS approach.LDA进近可能有一个或多个信标台（marker beacons），可能是DME。少量数LDA进近合装下滑谈，进近平面图会有看重，“LDA/Glideslope” 。此类身手属于类精密进近（APV）。有/无下滑谈的LDA最低标准在标准栏象征为S-LDA/GS和S-LDA。因临了进近航谈和跑谈直线有夹角，和ILS进近比拟，需要稀奇的天真航行。
三、识图？东京羽田机场由于减噪要乞降地形影响，本场22号和23号跑谈均意象打算有LDA身手，其中22号LDA进近，临了进近航迹与着陆航迹出入55度；23号LDA进近，临了进近航迹与着陆航迹出入45度 ，均高出30°夹角，机组在开动历程中应使用目视盘旋进近的最低标准，并不适用于CDFA航行门径。
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四、航行门径？供参考，请查阅本航司SOP图片
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