5.21~5.30

5.21 航径终止码 Path and Termination (PATH TERM)

  Definition/Description: The Path and Termination defines the path geometry for a single record of an ATC terminal procedure.
  Source/Content: Attachment 5 to this document, “Path and Terminator,” contains the various Path Term codes available for coding an ATC terminal procedure.
  Used On: Airport and Heliport SID/STAR/Approach records
  Length: 2 characters
  Character Type: Alpha

  定义或描述：对一个ATC终端程序的一个单记录的几何航径确定航径和终端形式代码。
  数据源或供选编码：附录5航径和终端形式代码包括共编ATC终端程序的各种航径和终端形式代码。
  应用范围：机场SID/STAR/APP
  字节数：2位
  字符类型：字母

5.22 转弯方向确认 Turn Direction Valid (TDV)

  5.22 Turn Direction Valid (TDV)
  Definition/Description: This field is used in conjunction with Turn direction to indicate that a turn is required prior to capturing the path defined in a terminal procedure.
  Source/Content: The field contains the alpha character “Y” when a turn is required prior to beginning the leg defined by the Path Term. The direction of the turn is specified in Section 5.20.
  Used On: Airport and Heliport SID/STAR/Approach Records
  Length: 1 character
  Character Type: Alpha

  5.22 转弯方向确认
  定义或描述：用于与转弯方向一起使用，表示在获取终端程序航径之前所要求的一个转弯。
  数据源或供选编码：在开始终端程序定义的一个航段之前要求作一个转弯的，在该项中填写“Y”。
  应用范围：机场SID/STAR/APP
  字节数：1位
  字符类型：字母

5.23 定位台 Recommended NAVAID (RECD NAV)

  5.23 Recommended NAVAID (RECD NAV)
  Definition/Description: The “Recommended Navaid” field allows the reference facility for the waypoint in a given record “Fix Ident” field or for an Airport or Heliport to be specified. VHF, NDB (Enroute and Terminal), Localizer, TACAN, GLS and MLS Navaids may be referenced.
  Source/Content: The 1, 2, 3 or 4 character identification of the Navaid appears in this field. Navaids recommended for waypoint reference in official government publications will be used when available. The following general rules on field content apply:
  a. A “VHF Navaid” may be any VOR, DME, VORDME, VORTAC, TACAN or Un-Biased ILSDME available in the database.
  b. A “NDB Navaid” may be any NDB or Locator (Terminal NDB) available in the database.
  c. Localizers, GLS Reference Path, and MLS Azimuth are used as Recommended Navaids for procedures that reference those navaids.
  d. The Recommended Navaid in final approach procedure coding will be the procedure reference facility (when Recommended Navaid is provided in coding).
  e. The Recommended Navaid in Airport and Heliport Records will be any VOR, VORDME, TACAN or VORTAC available in the database.
  f. The Recommended Navaid in any Enroute Airway Record will be any VORDME or VORTAC available in the database.
  g. The Recommended Navaid in any Terminal Procedure Record other than the final approach coding will be the procedure reference facility of a type from the Definition/Description paragraph above and will be in accordance with the rules governing Recommended Navaids for Path Terminators and coding rule as defined in Attachment 5 of this Specification.
  h. The rules for Recommended Navaids for Converging ILS Approach Procedures are the same as for ILS Approach Procedures.
  i. The Recommended Navaid used in a GLS Approach Procedure will be the GLS Ref Path identifier appropriate to the runway and approach.
  Used On: Enroute Airway Record, Airport and Heliport SID/STAR/Approach Records, Airport and Heliport Record
  Length: 4 characters max.
  Character Type: Alpha/numeric
  Examples: P, PP, DEN, LAX, ILAX, MJFK

  5.23 定位台
  定义或描述: 定位台信息可以填写在航路点、固定翼或直升机机场的RECD NAV字段中，应用于指明他们的仪表飞行定位台，通常使用的导航台类型有VHF、NDB(航路和终端)、航向台、TACAN、GLS 和MLS。
  数据源/内容:导航台识别符可以是1-4字符，如果政府给某个点制定了导航台，就应该编入，以下一般规则适用：
  a.VHF台可以是数据库中的VOR、 DME、 VOR/DME, VORTAC, TACAN 或不偏的ILSDME.
  b. NDB台可以是数据库中的任意一个NDB,LOC,无论他们是航路还是终端的。
  c. ILS,MLS的航向台也可以作为定位台，包括使用这类程序的RNAV过渡。
  d. 最后进近航段中各点的定位台只能使用本进近程序指定的导航台，如果最后进近程序不是都参考某一个导航台时，例如RNAV GPS,定位台字段可以不填，详见附件5.
  e. 固定翼和旋转翼机场的定位台可以是数据库内的任意一个VORDME或VORTAC.
  f. 航路航线记录中的定位台可以是数据库中的任意一个VORDME或VORTAC.
  g. 除最后进近以外的终端区飞行程序中各点的定位台只能是定义或描述中提到的类型，而且要严格遵守附件5中强调的PT编码规则.
  h. 使用在Converging ILS Approach Procedures的规则同样适应用于ILS进近程序。
  i. GLS进近程序中的定位台用 GLS Ref Path identifier appropriate to the runway and approach.
  j.使用不合装的VORDME,VORTAC,LOC/ILSDME,ILSTACAN只能应用于Circumstance,详见5.35和表5-17。
  应用范围：航路航线记录、机场SID/STAR/APP记录、机场记录
  字节数：最多4位
  字符类型：字母/数字
  举例：P、PP、DEN、LAX、ILAX、MJFK

5.24 方位线 Theta (THETA)

  5.24 Theta (THETA)
  Definition/Description: “Theta” is defined as the magnetic bearing to the waypoint identified in the record’s “FIX Ident” field from the Navaid in the “Recommended Navaid” field.
  Source/Content: Theta values are derived from official government sources when available. They are provided in degrees and tenths of a degree, with the decimal point suppressed. The content is controlled through requirements of the Path Terminator and coding rules contained in Attachment 5 of this specification.
  Used On: Airport and Heliport SID/STAR/Approach, Enroute Airway Records
  Length: 4 characters
  Character Type: Alpha/numeric
  Examples: 0000, 0756, 1217 1800

  5.24 方位线
  定义或描述：用于方位定义，从“定位台”字段的导航台至记录的“定位点识别”字段中航路点的磁方位。
  数据源或供选编码：方位值来自官方，以度和度的十分位提供，小数点省略。其内容按照附录5航径和终端形式和编码规则的要求管理。
  应用范围：机场SID/STAR/APP、航路航路航线记录
  字节数：4位
  字符类型：字母/数字
  举例：0000、0756、1217、1800

5.25 测距弧 Rho (RHO)

  5.25 Rho (RHO)
  Definition/Description: “RHO” is defined as the geodesic distance in nautical miles to the waypoint identified in the record’s “Fix Ident” field from the NAVAID in the “Recommended NAVAID” field.
  Source/Content: Rho values derived from official government sources will be used when available. They are entered into the field in nautical miles and tenths of a nautical mile, with the decimal point suppressed. The content is controlled through requirements of the Path Terminator and coding rules contained in Attachment 5 of this specification.
  Used On: Airport and Heliport SID/STAR/Approach, Enroute Airway Records
  Length: 4 characters
  Character Type: Alpha/numeric
  Examples: 0000, 0216, 0142, 1074

  5.25 测距弧
  定义或描述：用于定义距离，为从“定位台”字段的导航台至记录的“定位点识别”字段中航路点的测量距离(单位NM)。
  数据源或供选编码：距离值来自官方，以NM和NM的十分位提供，小数点省略。其内容按照附录5航径和终端形式和编码规则的要求控制。
  应用范围：机场SID/STAR/APP、航路航线记录
  字节数：4位
  字符类型：字母/数字
  举例：0000、0216、0142、1074

5.26 出航磁航迹 Outbound Magnetic Course (OB MAG CRS)

  5.26 Outbound Magnetic Course (OB MAG CRS)
  Definition/Description: “Outbound Magnetic Course” is the published outbound magnetic course from the waypoint identified in the record’s “Fix Ident” field. In addition, this field is used for Course/Heading/Radials on SID/STAR Approach Records through requirements of the Path Terminator and coding rules contained in Attachment 5 of this specification.
  Source/Content: Values from official government sources will be used when available. The field contains magnetic information expressed in degrees and tenths of a degree, with the decimal point suppressed. For route and procedure segments charted in “degrees true,” the last character (tenths position) of the field will contain the character “T”.
See Section 5.165 of this document for more information on “degrees true” information.
  Used On: Airport and Heliport SID/STAR/Approach, Enroute Airway and Flight Planning Arrival/ Departure Data Records
  Length: 4 characters
  Character Type: Alpha/numeric
  Examples: 2760, 0231, 194T

  5.26 出航磁航迹
  定义或描述：是自记录的“定位点识别”字段中航路点的公布出航磁航迹。此外，该字段还按照附录5航径和终端形式和编码规则的要求应用于SID/STAR/APP的航迹/航向/径向
  数据源或供选编码：航迹值来自官方，以度和度的十分位提供，小数点省略。图上航线和程序字段以“真航迹”绘制，本项的最后位填“T”。5.165详述关于“真航迹”的资料。
  应用范围：机场SID/STAR/APP、航路航线、飞行计划进场/离场数据记录
  字节数：4位
  字符类型；字母/数字
  举例：2760、0231、194T

5.27 航路距离 等待距离/时间 Route Distance From, Holding Distance/Time

  5.27 Route Distance From, Holding Distance/Time (RTE DIST FROM, HOLD DIST/TIME)
  Definition/Description: In Enroute Airways, “Route Distance From” is the distance in nautical miles from the waypoint identified in the records “Fix Ident” field to the next waypoint of the route. In SID, STAR and Approach Procedure records, the field may contain segment distances/along track distances/excursion distances/DME distances. The actual content is dependent on the Path and Termination. For more information on the content, refer to Table Three, Leg Data Fields, in Attachment 5 of this document.
  Source/Content: The field contains distances, from official government source where available, expressed in nautical miles and tenths of nautical miles with the decimal point suppressed. For Holding Pattern Records and/or Path and Terminations defining holdings patterns, content may be “holding time” expressed in minutes and tenths of minutes preceded by the character “T” with the decimal point suppressed.
  Used On: Airport and Heliport SID/STAR/Approach, Enroute Airway Records
  Length: 4 characters
  Character Type: Distance - Numeric; Time - Alpha/numeric
  Examples: 1076, 2822, T010, 0208, 0016

  5.27 航路距离 等待距离/时间
  定义或描述：航路距离是指距离记录的“定位点识别符”字段中的航路点至航路的下一航路点之间的NM距离。在SID/STAR/APP程序记录中，该字段可以包括航段距离/沿航迹的距离/偏离距离/DME距离。具体使用根据航径和终端形式。有关详细资料见附录5表3航段数据字段。
  数据源或供选编码；包括的距离值来自官方，以NM和NM的十分位提供，小数点省略。等待程序记录和/或航径和终端形式定义的等待程序，其内容可以是等待时间以分和十分位分表示，加前缀“T”，小数点省略。
  应用范围：机场SID/STAR/APP、航路航线记录
  字节数：4位
  字符类型：距离—数字，时间—字母/数字
  举例：1076、2822、T010、0208、0016

5.28 入航磁航迹 Inbound Magnetic Course (IB MAG CRS)

  5.28 Inbound Magnetic Course (IB MAG CRS)
  Definition/Description: “Inbound Magnetic Course” is the published inbound magnetic course to the waypoint in the “Fix Ident” field of the records in which it is employed.
The “HX” group of Path Terminator codes is used to provide racetrack type course reversal flight paths. Government publications for these course reversal include an “inbound magnetic bearing.” The SID/STAR/Approach Procedures records do not include a dedicated field for this inbound course. Instead, the information is included in the “Outbound Magnetic Course” field of such records.
  Source/Content: Values from official government sources will be used when available. The field contains magnetic bearing in degrees and tenths of a degree, with the decimal point suppressed. For routes charted with true courses, the last character of this field will contain a “T” in place of tenths of a degree.
  Used On: Enroute Airways records
  Length: 4 characters
  Character Type: Alpha/numeric
  Examples: 2760, 0231, 194T

  5.28 入航磁航迹
  定义或描述：表示至使用记录的“定位点识别”字段的航路点的入航磁航迹。
  航径终端形式代码的“HX”组应用于提供直角程序的反向程序。官方公布的这种反向程序包括入航磁航迹，SID/STAR/APP程序记录不包括该入航磁航迹的专用字段。而是代之在这种记录的出航磁航径项中包括该资料。
  数据源或供选编码：航迹值来自官方，该字段包括的磁方位以度和十分位度提供，小数点省略。图上航线用真航迹，的最后一位在十分位度的位置上填“T”。
  应用范围：航路航线记录
  字节数：4位
  字符类型：字母/数字
  举例：2760、 0231、 194T

5.29 高度描述 Altitude Description (ALT DESC)

  5.29 Altitude Description (ALT DESC)
  Definition/Description: The “Altitude Description” field will designate whether a waypoint should be crossed “at,” “at or above,” “at or below” or “at or above to at or below” specified altitudes. The field is also used to designate recommended altitudes and cases where two distinct altitudes are provided at a single fix.
  Source/Content: A code from the following table, selected based on official government source or coding rules in Attachment 5 to this document.

  Note: The “B” entry may only appear in Airport and Heliport SID/STAR/Approach Route, Airport/Enroute/Heliport Communications, VHF Navaid Limitation and Preferred Route Records. The higher value will always appear first in records with two altitude fields, or as the first three digits of the Altitude Limitation field. In Approach Records, use is limited to Approach Transitions with the exception of the last leg of a transition and to Missed Approach with the exception of the first leg of a missed approach.

  Note: The “C” entry may only appear in SID records. It is used to indicate that the leg has a conditional altitude termination.

  Note: In Final Approach Route Coding for Precision Approach Procedures with electronic Glide Slope the codes “@ (for blank),” “G,” “H,” “I,”and “J,” are applied as indicated in the table above. For more detail refer to procedure coding rules in Attachment 5 of this Specification.

  Note Codes “I” and “J” are only used when the first altitude for the FACF fix is not blank. If that altitude is blank, the Altitude Description is also blank, even when the second altitude is not blank.

  Note: The codes “V,” “X” and “Y” are used with all fixes defined in government source as step-down fixes and from the FACF inbound on final approach coding. There can be two altitudes provided on every fix in final approach coding.
   Altitude 1 is the altitude and constraint specified at the fix, the so-called “procedure altitude.”
   Altitude 2 is the “at” altitude on the coded vertical path at the fix. See rules for fix altitude coding in Attachment 5 of this Specification.

  Note: Localizer Only Altitude information is provided in the Approach Continuation Record for Precision Approach Procedures with electronic Glide Slope using the codes for “At,” “At or Above” and “At or Below” appropriately based on government source publications. This Altitude is the non-precision altitude at the fix on which it is coded. Provided on FAF and step-down fix waypoints.

  Used On: Airport and Heliport SID/STAR/Approach, Primary and Continuation Records, Airport, Heliport and Enroute Communications, VHF NAVAID Limitation Continuation, Preferred Routes and Flight Planning Arrival/Departure Data Records.
  Length: 1 character
  Character Type: Alpha

  5.29 高度描述
  定义或描述:无论飞越某航路点的高度是“at,” “at or above,” “at or below,”或“at or above to at or below”。“Altitude Description”字段都必须指定，它也应用于指定推荐的高度和处理相同定位点指定两个不同高度的情况。
  数据源/内容:从下表中选择一个代码，选择方法应基于政府官方数据源或此文档附件5中的编码规则。
  备注: “B”可能只是出现在SID/STAR/APCH, Airport/Enroute/通信, VHF台限制和Preferred Route记录. 当这些记录有两个高度字段时，总是把更高的数值写在第一个字段中, 或者使用Altitude Limitation字段的前三位表示.在进近记录中, 作用是限制进近过渡使用过渡的最后一个航段和限制复飞从复飞第一个航段.
  备注:“C” 可能只是出现在SID记录.应用于指明此航段有一个根据条件终止的高度.
  备注:就像上表指明的一样,在带有下滑道的精密进近程序编码会使用到“@ (表空白),” “G,” “H,” “I” and “J”. 详情参阅本规范的附件5.
  备注:I” 和“J”仅在FACF记录行的第一个高度不为空时使用.如果这个高度为空,“Altitude Description ”也为空，即便第二个高度不为空.
  备注: “V” “X”和“Y”应用于官方数据源定义的最后进近航段FACF后 SDF的编码，最后进近航段上各定位点可以有编码两个高度。“Altitude 1”是定位点上规定的高度限制，所谓的”程序高度”。“Altitude 2”是按照所用下滑角计算出来的”at”高度。详情参阅本规范的附件5。
  备注: “Localizer Only Altitude”信息在精密进近程序的续记录中提供，参照官方数据源选择“At” “At or Above”或“At or Below”，此处填写的高度是标在FAF、SDF上的非精密高度。
  应用范围: Airport SID/STAR/Approach的主、续记录,Airport和Enroute 通信, VHF NAVAID 限制续记录, Preferred Routes 和飞行计划Arrival/Departure数据记录
  字节数: 1个
  字符类型: 字母

5.30 高度/最低高度 Altitude/Minimum Altitude

  5.30 Altitude/Minimum Altitude
  Definition/Description: The “Altitude/Minimum Altitude” field indicates the reference altitude associated with (1) Enroute Airways (MEA, MFA or other minimum altitudes as defined by source), (2) holding pattern path of Holding Pattern record, (3) altitudes at fixes in terminal procedures and terminal procedure path termination defined by the Path Terminator in the Airport or Heliport SID/STAR/Approach Record and (4) lowest altitude of the “blocked altitudes” for a Preferred Route.
  Source/Content: Reference altitudes are determined during route definition. The values are derived from official government source when available. This specification includes specific rules for altitude provision and when those altitudes are not provided by source documents, they will be included by data suppliers according to those rules. The field may contain altitudes (all numeric) or flight level (alpha/numeric). The all-numeric fields will contain altitudes in feet with a resolution of one foot. The alpha/numeric fields will contain the alpha characters “FL” followed by the altitude expressed in hundreds of feet (three digits) or a code as indicated below.
  On Airport and Heliport SID, STAR and Approach Route records, the first “Altitude” field will contain an altitude when “Altitude Description” field contains a plus (+), a minus (-), or one of the following characters: “B,” “G,” “H,” or “V.” The first “Altitude” field may contain an altitude when the “Altitude Description” field contains a “I” or “J” or when it is blank. The second “Altitude” field will contain an altitude when the “Altitude Description” field contains one of the following characters: “B,” “C,” “G,” “H,” “I,” “J,” or “V.” In approach procedure coding, some fix “Altitudes” may be below sea level, specifically altitudes at runway fixes when the runway threshold elevation is below sea level. In these cases, the “Altitude” will be expressed in feet with a minus (-) sign in the first character of the five-character field, see examples.
  On Airport and Heliport SID/STAR/Approach Continuation Records, the “Localizer Only Altitude” field will contain an altitude when there is a non-precision altitude at the fix that is associated with using the ILS procedure as a Localizer Only (Glide Slope out) procedure. Such an altitude may be provided for the Final Approach Fix (FAF) or any step-down fix from the FACF inbound on the final approach course.
  On Enroute Airway records, the first “Minimum Altitude” field will contain the MEA or MFA if the altitude is the same for both directions of flight and the second “minimum Altitude” will be blank. If the airway segment has directional MEAs/MFAs, the first “Minimum Altitude” field will contain the value for the direction of flight in which the airway is coded and the second “Minimum Altitude” field will contain the value for the opposite direction of flight. The first “Minimum Altitude” field may contain the alpha characters UNKNN when the MEA/MFA is unknown or the alpha characters NESTB when the MEA/MFA has not been established by the appropriate authority.
  On Preferred Routes, the “Minimum Altitude” and the “Maximum Altitude” apply to the entire route and are a minimum and maximum block. Altitude 1 and Altitude 2 are fix related apply only to the fix in the sequence in which they occur and are defined by the Altitude Description field.

  Used On: Airport and Heliport SID/STAR/Approach, Primary and Continuation Records, Holding Pattern, Enroute Airway, Preferred Routes.
  Length: 5 characters
  Character Type: Alpha/numeric
  Examples: 05000, FL050, 18000, FL180 00600, -0012, 29000, FL290, UNKNN or NESTB (the last two on Enroute Airways only)

  5.30 高度/最低高度
  定义或描述高度/最低高度字段表示与下列机场情况相关的参考高度(1)航路/航线的(MEA, MFA 或者其他由数据源提供的最低高度), (2) 等待程序记录要求的等待轨迹, (3)终端区飞行程序中各定位点的高度and terminal procedure path termination defined by the Path Terminator in the Airport or Heliport SID/STAR/Approach Record and (4) Preferred Route航路中“blocked altitudes” 的最低高度.
  数据源/内容:参考高度是在航路定义中确定的. 有政府机构提供的数据源时，应使用政府公布的数值.当高度不由数据源文档提供时，本规范提出了数据供应商应遵守的具体高度编码规则。字段可能包含海拔高度(全是数字)或飞行高度层(字母加数字)。字段内容全是数字时表示以英尺为单位。字段内容为字母加数字时表示飞行高度层，此时必须以字母”FL”开头、后随三位阿拉伯数字，也允许使用下文所述的表达方式编码。
  在机场SID, STAR 和APCH记录中,当 “Altitude Description” 字段中填写了(+), (-), “B,” “G,” “H,” ,“V” ,“I” , “J”，或者空格时，第一个“Altitude” 字段需填写一个高度；在进近程序的编码中,当“Altitude Description”字段中已经填写“B,” “C,” “G,” “H,” “I,” “J” ,“V”，第二个“Altitude”字段需填写一个高度；某些定位点的“Altitudes”可能会低于海平面,尤其是当跑道入口标高低于海平面时. 跑道定位点的高度会出现这种情况。在这种情况下,需要在高度数值前加上一个(-)，单位仍然是英尺，字节数仍然是5个,参阅样例.
  在机场SID, STAR 和APCH续记录中,当ILS下滑道不工作程序的定位点有非精密高度时,“Localizer Only Altitude”字段需填写一个高度。这种高度可能设置在最后进近航道FACF之后的FAF点或任意SDF上.
  在航路/航线记录中,如果来向与去向的高度相同，就应该在第一个“Minimum Altitude”字段填写MEA或MFA，而且第二个“Minimum Altitude” 应该为空。 如果此航段的来向与去向的MEA/MFA不同,则应该按照编码的方向在第一个“Minimum Altitude”填写顺向的MEA或MFA，在第二个“Minimum Altitude”填写反向的MEA或MFA.当MEA/MFA不详时，第一个“Minimum Altitude” 字段可能填写UNKNN 。当相关当局未公布MEA/MFA，则应该填写NESTB.
  On Preferred Routes, the “Minimum Altitude” and the “Maximum Altitude” apply to the entire route and are a minimum and maximum block. Altitude 1 and Altitude 2 are fix related apply only to the fix in the sequence in which they occur and are defined by the Altitude Description field.
  应用范围:机场的SID/STAR/APCH的主、续记录,等待程序,航路/航线,Preferred Routes.
  字节数:5个
  字符类型:字母/数字
  样例:05000, FL050, 18000, FL180 00600, -0012, 29000, FL290, UNKNN or NESTB (最后两种只用于航路航线)

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