5.171~5.190

5.171 最低下降高 Minimum Descent Height (MDH)

  5.171 Minimum Descent Height (MDH)
  Definition/Description: The “Minimum Descent Height” fields specify the lowest height, expressed in feet, to which descent is authorized on final approach or during circle-to-land maneuvering in execution of a standard instrument approach procedure where no electric glide slope is provided.
  Source/Content: Minimum Descent Height information is obtained from official government publications. The field will actually contain a figure expressed in feet above the airport elevation, with a resolution of one foot. This value is also referred to as “Height Above Airport” (HAA), a figure which, when added to the airport elevation, will give the Minimum Descent Altitude in feet above mean sea level. These fields will be shown on the first record of the final approach only and may be blank if Decision Height fields are entered.
  Used On: Airport and Heliport Approach Continuation records
  Length: 4 characters
  Character Type: Alpha/numeric
  Examples: 0314, 0514

  5.171 最低下降高
  定义/描述：用于说明在最后进近中允许下降位置的最低高，以英尺为单位；或者在实施标准仪表进近程序的无电子下滑道的机动飞行中，盘旋着陆的最低高。
  数据来源：MDH 来自官方。实际上包括一个高于机场标高的数字，以英尺为单位，分辨率为 1 英尺。该数据也称为“高于机场的高”(HAA)，在添加到机场标高中时，填写 MDA 数字，以 MSL 英尺为单位。这些字段只在最后进近第1个记录中填写，如果已经填写了 DH 字段，则可为空格。
  应用范围：机场进近续记录
  字节数：4 位
  字符类型：字母/数字
  举例：0314、0514

5.172 方位线左右覆盖扇区 (AZ COV RIGHT/LEFT) 反方位线左右覆盖扇区 (BAZ COV RIGHT/LEFT)

  5.172 Azimuth Coverage Sector Right/Left (AZ COV RIGHT/LEFT) & Back Azimuth Coverage Sector Right/Left(BAZ COV RIGHT/LEFT)
  5.172 方位线左右覆盖扇区 (AZ COV RIGHT/LEFT) 反方位线左右覆盖扇区 (BAZ COV RIGHT/LEFT)
  Definition/Description: The “Azimuth Coverage Sector” fields define the limit of the azimuth transmitter signal on the right and left side of the final approach course flight track. The Back Azimuth Coverage Sector is identical to the Azimuth Coverage Sector and also provides guidance for missed approaches and departures.
  定义/描述：方位线左右覆盖扇区定义最后进近航迹左右方位信号覆盖范围。反方位线左右覆盖扇区定义方位信号覆盖范围，也为复飞或离场提供引导。
  Source/Content: Azimuth Coverage Sectors will be derived from official government publications and entered in whole degrees.
  数据来源：信息来源于政府，用整度的方式编码。
  Used On: MLS and MLS Continuation records
  应用范围：MLS 及 MLS 续记录
  Length: 3 characters
  字节数：3 个
  Character Type: Numeric
  字符类型：数字
  Examples: 040, 062, 110
  举例：040, 062, 110

  Notes:The Azimuth Coverage Sector includes the Proportional Guidance Sector and the Clearance Guidance Sector as illustrated in below.
  备注：方位角覆盖扇区包括比例制导扇区和 Clearance Guidance Sector，如下所示。

5.173 标称仰角(MLS用) Nominal Elevation Angle

  5.173 Nominal Elevation Angle (NOM ELEV ANGLE)
  Definition/Description: The “Nominal Elevation Angle” field defines the normal glide path angle for the MLS installation.
  Source/Content: Glide Path angles from official government sources are entered into the field in tens of degrees, tenths of a degree, and hundredths of a degree with the decimal point suppressed.
  Used On: MLS records
  Length: 4 characters
  Character Type: Numeric
  Examples: 1000, 0275

  5.173 标称仰角
  定义/说明：标称仰角字段定义 MLS 安装的正常下滑道角度。
  来源/内容：官方来源的下滑道角度以数十度、十分之一度和百分之一度输入字段，小数点不显示。
  应用范围：MLS 记录
  字节数：4 位
  字符类型：数字
  举例；1000, 0275

5.174 限制空域未结束标识 Restrictive Airspace Link Continuation

  5.174 Restrictive Airspace Link Continuation (LC)
  Definition/Description: The “Restrictive Airspace Link Continuation” field is used to indicate cases where it is not possible to store all Enroute Airway to Restrictive Airspace Links in the Flight Planning Continuation Record defined in 4.6.3 (more than four area links required).
  Source/Content: When an additional Continuation Record (as defined in Section 4.1.6.4) is required to provide further Enroute Airway to Restrictive Airspace Links, this field will contain the alpha character “Y” to indicate that status.
  Used On: Enroute Airway Flight Planning Continuation records
  Length: 1 character
  Character Type: Alpha

  5.174 限制空域未结束标识 (LC)
  定义或描述：用于指示不能存储所有航路至4.6.3中定义的飞行计划续记录中的限制性空域连接的情况。
  数据源或供选编码：当补充的续记录(如4.6.4所述)需要提供另外的航路到限制空域连接中时，本项填写Y表示此种情况。
  应用范围：航路飞行计划续记录
  字节数：1位
  字符类型：字母

5.175 等待速度 Holding Speed

  5.175 Holding Speed (HOLD SPEED)
  Definition/Description: The “Holding Speed” will be the maximum speed in a holding pattern.
  Source/Content: The speed limit will be derived from official government sources. If the value is different from the limit given with ICAO rules, it will be shown in knots, else the field will be blank.
  Used On: Holding Pattern record
  Length: 3 characters
  Character Type: Numeric
  Examples: 250, 015

  5.175 等待速度
  定义或描述：等待速度为等待程序的最大速度。
  数据源或供选编码：速度限制来自官方。如该值与ICAO的标准有差异时，以海里表示，否则为空格。
  应用范围：等待程序记录
  字节数：3位
  字符类型：数字
  举例：250、015

5.177 军民用标识 Public/Military Indicator

  5.177 Public/Military Indicator (PUB/MIL)
  Definition/Description: Airports can be classified into three categories, airports open to the general public, military airports, and airport closed to the public. This field permits these airports to be categorized by their use.
  Source/Content: Airport data is obtained from official government sources and their use is defined in these civil and or military publications. Airports that are considered joint use, both civil and military, will be shown as a civil airport.

  5.177 军民用标识
  定义或描述：机场可以分为3类，即：对大众开放的机场、军用机场和不对公众开放的机场。本项允许用户填写。
  数据源或供选编码：来自官方资料，其使用按照民用和军方的资料规定。军民合用的机场按民用机场表示
  应用范围：机场记录
  字节数：1位
  字符类型：字母

5.178 时区 Time Zone

  5.178 Time Zone
  Definition/Description: The standard time zone system is based on the division of world into 24 zones, each of 15 degrees longitude. The “zero” time zone is entered at Greenwich meridian with longitudes 7 degrees, 30 minutes West and 7 degrees, 30 minutes east, and there is no difference in the standard time of this time zone and Greenwich Mean Time. Time zones are designated by letters of the alphabet by which the standard time of each zone differs from that at Greenwich.
  Source/Content: Time zones will be derived from official Time Zone Charts of the World. The first character of the field indicates the time zone observed by the airport. Time zones are indicated by a letter of the alphabet according to the following table:
|Field
Cont|Diff to
Zulu time|Lat/Long Boundaries|Field
Cont|Diff to
Zulu time|Lat/Long Boundaries|
|<—>|<—>|<—>|<—>|<—>|<—>|
|Z|0|W007 30/E007 30| | | |
|A|-1|E007 30/E022 30|N|+1|W007 30/W022 30|
|B|-2|E022 30/E037 30|O|+2|W022 30/W037 30|
|C|-3|E037 30/E052 30|P|+3|W037 30/W052 30|
|D|-4|E052 30/E067 30|Q|+4|W052 30/W067 30|
|E|-5|E067 30/E082 30|R|+5|W067 30/W082 30|
|F|-6|E082 30/E097 30|S|+6|W082 30/W097 30|
|G|-7|E097 30/E112 30|T|+7|W097 30/W112 30|
|H|-8|E112 30/E127 30|U|+8|W112 30/W127 30|
|I|-9|E127 30/E142 30|V|+9|W127 30/W142 30|
|K|-10|E142 30/E157 30|W|+10|W142 30/W157 30|
|L|-11|E157 30/E172 30|X|+11|W157 30/W172 30|
|M|-12|E172 30/180 00|Y|+12|W172 30/180 00|

  The second and third characters indicate, in minutes, that the time observed by the airport/heliport must be adjusted from the hour by the number of minutes indicated.
  Used On: Airport and Heliport records
  Length: 3 characters
  Character Type: Alpha/numeric
  Examples: India falls in the “E” (-5) and “F” (-6) time zones, however, the time zone observed in all of India is “E30” (-5 hours and 30 minutes). For any country falling into the “M” or “Y” time zone and observing a time equal to the next greater time zone, the adjustment of 1 hour will be indicated by “60” in the second and third positions.

  5.178 时区
  定义或描述：标准时区基于世界24个区的划分，每个区占经度15度。零时区在格林威治，东、西各7度30分，区时与GMT无差别。区时以字母为代号，表示区时与GMT不同。
  数据源或供选编码：详见右表世界时区表，本项第1个字母指示机场遵守的时区。时区代码字母从下表中选择。
  应用范围：机场记录
  字节数：3位
  字符类型：字母/数字
  举例：印度在E(-5)和F(-6)时区，但是印度执行的时区为E30(即-5时30分)。任何国家在M或Y区，采用等于下一更大位数的时区，1小时的调整，在第2位和第3位表示60。

5.179 昼夜运行标志 Daylight Time Indicator

  5.179 Daylight Time Indicator (DAY TIME)
  Definition/Description: The “Daylight” Time Indicator” field is used to indicate if the airport observes Daylight or Summer time when such time changes are in effect for the country or state the airport resides in.
  Source/Content: Countries and states that observe Daylighttime will be obtained from official publications and the field will contain the alpha character “Y” if airport observes Daylight or Summer time. The field will contain the alpha character “N” if the airport does not observe Daylight time or if it is unknown.
  Used On: Airport and Heliport records
  Length: 1 character
  Character Type: Alpha

  5.179 昼夜运行标志
  定义或描述：当机场所在的国家采用白昼时或夏令时，在发生变化时，用于表示该机场是执行白昼时还是夏令时。
  数据源或供选编码：执行白昼时国家从官方出版物获取资料，如果机场执行该白昼时或夏令时，在本项中填写Y。如果不执行或不知道，则填写N。
  应用范围：机场记录
  字节数：1位
  字符类型：字母

5.180 起降坪编号 Pad Identifier

  5.180 Pad Identifier (PAD IDENT)
  Definition/Description: The “PAD Identifier” field identifies the helipad described in the heliport records, helipad field, or that pad served by ILS/MLS described in the Airport and Heliport ILS/MLS records. There is a unique Heliport Record for each Helipad at a given location.
  Source/Content: PAD Identifiers will be derived from official government publications when available. If not available from source, unique identifiers will be assigned by the data supplier.
  Used On: Heliport, Airport and Heliport ILS and MLS Records
  Length: 5 characters max
  Character Type: Alpha/numeric
  Examples:
  Source Supplied - PADA1, NWPAD, ALPHA, A1
  Data Supplier - HELO1, HELO2, HELO3

  5.180 起降坪编号
  定义或描述：识别直升机场记录、直升起降点字段或者在机场中描述的ILS/MLS所服务的起降点ILS/MLS记录中描述的起降点。在一个特定的地点，只有一个唯一的直升机场记录。
  数据源或供选编码：正式数据源为官方出版物，如提供。如无正式数据源，该编号由数据商提供。
  应用范围：直升机场、机场ILS/MLS记录
  字节数：最多5位
  字符类型：字母/数字
  举例：
  正式来源–PADA1、NMWPAD、ALPHA、A1
  数据商–HELO1、HELO2、HELO3

5.181 H24 Indicator (H24)

  5.181 H24 Indicator (H24)
  Definition/Description: The “24H Indicator” field is used to indicate if the frequency is available on a 24 hour basis or only on a part time base.
  Source/Content: Hours of operation are derived from official government publications. The field will contain the alpha character “Y” if the frequency is available 24 hours or the alpha character “N” if it is available part time.
  Used On: Enroute/Airport Communications records
  Length: 1 character
  Character Type: Alpha

  5.181 H24 代码
  定义或描述：用于指示频率为24小时开放，还是仅在部分时间开放。
  数据源或供选编码：开放时间来自官方。如果该频率为24小时开放，填写Y；如果在部分时间开放，则填写N。
  应用范围：航路/机场通信记录
  字节数：1位
  字符类型：字母

5.182 守听/发射 Guard/Transmit (G/T)

  5.182 Guard/Transmit (G/T)
  Definition/Description: The “Guard/Transmit” field is used to indicate if the frequency shown in the Communication Frequency field is used, by the station, to receive voice communications or to transmit voice on.
  Source/Content: The field will be derived from official government publications. The field will contain the alpha character “G” if the radio guards (receives), or the alpha character “T” if the radio transmits, on the respective frequency. The field will be blank if the radio receives and transmits on the same frequency.
  Used On: Enroute/Airport Communications records
  Length: 1 characters
  Character Type: Alpha

  5.182 守听/发射
  定义或描述：用于表示通信频率字段中的频率，电台是应用于接收话音通信，还是发射话音。
  数据源或供选编码：资料来自官方出版物。如果应用于无线电守听，填写G；如应用于发射，在各频率中填写T。但是同一频率同时应用于守听和发射，本项则为空格。
  应用范围：航路、机场通信记录
  字节数：1位
  字符类型：字母

5.183 扇区代码 Sectorization (SECTOR)

  5.183 Sectorization (SECTOR)
  Definition/Description: The “Sectorization” field is used to define the airspace sector a communication frequency is applicable for when an airport defines sectors by bearing from the same point.
  Source/Content: Sectors are derived from official government publication. Each sector will contain two bearings, indicated in whole degrees, of the sector being defined. The first three numeric characters define the beginning bearing from the station, and the last three characters define the ending bearing from the station. If the sectors are not defined by bearings, then the sectorization will be shown in narrative form in an Airport Communications Continuation record.
  Used On: Airport Communication records
  Length: 6 characters
  Character Type: Alpha/numeric
  Examples: 010189, 190009

  5.183 扇区代码
  定义或描述：当机场在同一点以方位划分机场扇面时，本项应用于定义该扇面采用的一个频率。
  数据源或供选编码：扇面资料来自官方。每个扇面包括两个方位，以整度表示划分的扇面。前3位表示电台的起始方位。后3位表示电台的终止方位。如果扇面不以方位表示，则应在机场通信续记录中，以文字形式叙述。
  应用范围：机场通信记录
  字节数：6位
  字符类型：字母/数字
  举例：010189、190009

5.184 通信高度 Communication Altitude (COMM ALTITUDE)

  5.184 Communication Altitude (COMM ALTITUDE)
  Definition/Description: The “Communication Altitude” fields are used to define the altitude restrictions that the frequency is to be used within. On Airport Communications records, this field is normally used in conjunction with sectorization.
  Source/Content: Altitude constraints will be derived from official government publications. The field may contain altitudes (all numerics) or flight levels (alpha/numerics). 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 in hundreds of feet. The first altitude field will contain an altitude when the Altitude Descript field contains a plus (+), minus (-) or B. The second altitude field will contain an altitude when the Altitude Descript field contains a B.
  Used On: Enroute/Airport Communications records
  Length: 5 characters
  Character Type: Alpha/numeric
  Examples: 12000, 06000, FL050

  5.184 通信高度
  定义或描述：用于定义高度限制，在此限制内使用该频率。在机场记录中，通常应用于与扇面连用。
  数据源或供选编码：高度来源于官方，本项可以包括高度或FL。所有数字字段包括以英尺为单位的高度，分辨率为1英尺。字母/数字字段包括FL后随百英尺为单位的高度。当高度描述项中包括“+”、“-”或B的，第1个高度字段应包括一个高度。高度描述字段有B的，第2高度项中填写一个高度。
  应用范围：航路/机场通信纪录
  字节数：5位
  字符类型：字母/数字
  举例：12000、06000 、FL050

5.185 扇区设备 Sector Facility (SEC FAC)

  5.185 Sector Facility (SEC FAC)
  Definition/Description: The “Sector Facility” field is used to define the Navaid or Airport upon which the information in the “Sector” (5.183) field is based.
  Source/Content: Sector related facility information will be derived from official government sources. The field will contain the official Navaid or Airport identifier.
  Used On: Airport and Heliport Communications Records
  Length: 4 characters
  Character Type: Alpha/numeric
  Examples: IOC, COS, DEN, KJFK

  5.185 扇区设备
  定义或描述：本项应用于定义在扇面字段(5.183中)的资料所依据的通信设施或机场。
  来源/内容：扇面相关的设施的资料来自官方，该项包括正式的导航台或机场的识别。
  应用范围：机场、直升机场通信记录
  字节数：4位
  字符类型：字母/数字
  举例：IOC、COS、DEN、KJFK

5.186 扇区描述 Narrative

  5.186 Narrative
  Definition/Description: The “Narrative” field is used to define communication sectors in a narrative form when the Sectorization field cannot be used, or to further define the sector when the Sectorization field is used.
  Source/Content: Sectors are derived from official government publications. The field will contain a free form description of the sectorization for the frequency being defined.
  Used On: Airport Communications Continuation records
  Length: 60 characters
  Character Type: Alpha/numeric
  Examples: NORTH COMPLEX, RWYS 9/27 15/33

  5.186 扇区化叙述
  定义或描述：当扇面项不能使用时，或者进一步定义使用扇面项中的扇面时，叙述格式中定义通信的扇面。
  数据源或供选编码：扇面资料来自官方，本项包括对使用频率的扇面的普通文字描述。
  应用范围：机场通信续记录
  字节数：小于等于60位
  字符类型：字母/数字
  举例：NORTH COMPLEX, RWYS9/27 15/23

5.187 距离描述 Distance Description (DIST DESC)

  5.187 Distance Description (DIST DESC)
  Definition/Description: The “Distance Description” field will designate whether a Communications frequency is to be used from the facility out to a specified distance or from a specified distance and beyond in the Airport Communications Record. In the VHF Navaid Limitation Continuation Record, the field is used to define whether the limitation applies from the navaid out to a specified distance or from a specified distance and beyond.
  Source/Content: The field will contain the character “-” when the communications frequency or navaid limitation is “out to a specified distance.” When the field content is “+”, then the communications frequency is used or the navaid limitation applies “beyond” a specified distance. When the field is blank, no restrictions/limitations apply.
  Used On: Airport Communications Records, VHF Navaid Limitation Continuation Records
  Length: 1 character
  Character Type: Alpha

  5.187 距离描述
  定义或描述：表示在机场通信记录中的一个设施使用的通信频率，是否在规定距离或者自规定距离以远收不到。在VHF台限制的续记录中，该字段应用于定义限制是否应用于特定距离之外的设施，或者可否应用于一个特定距离以远的地方。
  数据源或供选编码：当通信频率或导航台限制在规定距离之外不能使用，填写“-”。填写“+”时，表示通信频率可使用，或在一规定距离以远应用导航台限制。当本项为空时，不应用限制。
  应用范围：机场通信记录、VHF台限制续记录
  字节数：1位
  字符类型：字母

5.188 通信距离 Communications Distance (COMM DIST)

  5.188 Communications Distance (COMM DIST)
  Definition/Description: The “Communications Distance” field is used to define the distance restriction a communication frequency is to be used within or beyond when such restrictions apply. This field is used in conjunction with the Distance Description field.
  Source/Content: Distances restrictions are derived from official government publications and will contain a value in nautical miles from the communications facility. If the Distance Description field contains the character “-”, then the frequency is to be used from the facility to the distance specified. If the Distance Description field contains the character “+” then the frequency is to be used from the distance specified and beyond. The field will be blank if no restrictions apply.
  Used On: Airport Communications records
  Length: 2 characters
  Character Type: Numeric
  Examples: 05, 10, 15

  5.188 通信距离
  定义或描述：用于定义一个距离限制，即当应用该限制时一个使用的通信频率的距离限制情况。本项与距离描述项结合使用。
  数据源或供选编码：距离限制由官方提供，包括自通信设施的海里数。如果距离描述字段中包括“-”，则表示使用的频率为自设施起至规定的距离。如果包括“+”，则频率的使用自规定距离至以远。如没有限制，本项为空格。
  应用范围：机场通信记录
  字节数：2位
  字符类型：数字
  举例：05、10、15

5.189 遥控台名称 Remote Site Name

  5.189 Remote Site Name
  Definition/Description: The “Remote Name” contains the name assigned to a Remote Communications Air/Ground and Remote Communications Outlet facilities. These remote facilities are unmanned air/ground communication stations with transmit and receive capability, used to extend the service range of ARTCC and FSS stations.
Source/Content: Remote Names are derived from official government publications. The field may be blank if names are not assigned.
  Used On: Enroute Communications records
  Length: 25 characters
  Character Type: Alpha/numeric
  Examples: CHEYENNE, ABBEVILLE

  5.189 遥控台名称
  定义或描述：包括分配给地/空遥控通信有遥控通信出口设施的名称。这些遥控设施为有收、发能力的无名称地/空通信电台，应用于表示ARTCC和FSS站的服务范围。
  数据源或供选编码：资料来自官方，如果未分配名称本项可为空。
  应用范围：航路通信记录
  字节数：25位
  字符类型：字母/数字
  举例：CHEYENNE、ABBEVILLE

5.190 FIR/RDO识别符 FIR/RDO Identifier (FIR/RDO)

  5.190 FIR/RDO Identifier (FIR/RDO)
  Definition/Description: The “FIR/RDO Identifier” field for Enroute Center records identifies the Flight Information Region or Upper Information Region. For FSS records the field identifies the Flight Service Station.
  Source/Content: Identifiers are obtained from official government publications. For FIR/UIR the field will contain the four characters FIR or UIR ident. For other record type the field will contain a three or four character identifier.
  Used On: Enroute Communications records
  Length: 4 characters
  Character Type: Alpha/numeric
  Examples: KZDN, DEN

  5.190 FIR/RDO识别符
  定义或描述：用于航路中心记录识别FIR或UIR。在FSS记录中识别FSS站。
  数据源或供选编码：资料来自官方，FIR/UIR的该字段包括FIR/UIR的四字代码。其它记录的该字段包括三字或四字代码。
  应用范围：航路通信记录
  字节数：4字
  字符类型：字母/数字
  举例：KZDN、DEN

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