TWY Taxiway [TWY]
Attributes
TXT_DESIG Designator
CODE_TYPE Type
VAL_WID Width
UOM_WID Unit of measurement [width]
[CODE_COMPOSITION] DEPRECATED-4.5 Surface composition
[CODE_COND_SFC] DEPRECATED-4.5 Surface condition
[CODE_STRENGTH] DEPRECATED-4.5 Surface strength method
[TXT_DESCR_STRENGTH] DEPRECATED-4.5 Surface strength
CODE_STS Operational status
TXT_MARKING Marking system description
TXT_RMK Remark
Relationships
may be associated with one or more FATO_DIRECTION_DECL_DIST Distance declared for FATO direction
may be associated with one or more RWY_DIRECTION_DECL_DIST Declared distance for a RWY direction
may be intersecting at one or more TWY_INTERSECTION Intersection of a TWY with another TWY, RWY or FATO
may be intersected by one or more TWY_INTERSECTION Intersection of a TWY with another TWY, RWY or FATO
may be having one or more TWY_LGT_SYS TWY lighting system
may be described with one or more TWY_CLINE_POINT Position on the centre line of a TWY
must be situated at one and only one AD_HP Aerodrome / Heliport
must be having one and only one SURFACE_CHARACTERISTICS Surface characteristics
TWY_CLINE_POINT Position on the centre line of a TWY
Attributes
NO_SEQ Sequence number
GEO_LAT Latitude
GEO_LONG Longitude
CODE_DATUM Datum
VAL_GEO_ACCURACY Geographical accuracy
UOM_GEO_ACCURACY Unit of measurement [geographical accuracy]
VAL_ELEV Elevation
VAL_ELEV_ACCURACY Elevation accuracy
VAL_GEOID_UNDULATION Geoid undulation
UOM_DIST_VER Unit of measurement [vertical distance]
VAL_CRC Cyclic redundancy check
TXT_VER_DATUM Vertical Datum
TXT_RMK Remark
Relationships
may be also one and only one TWY_HOLDING_POSITION TWY holding position
must be on the centreline of one and only one TWY Taxiway [TWY]
TWY_HOLDING_POSITION TWY holding position
Attributes
TXT_MARKING Marking system description
TXT_LGT Lighting system description
TXT_RMK Remark
Relationships
may be having one or more NAV_SYS_CHECKPOINT Checkpoint
must be at one and only one TWY_CLINE_POINT Position on the centre line of a TWY
TWY_INTERSECTION Intersection of a TWY with another TWY, RWY or FATO
Attributes
TXT_RMK Remark
Relationships
must be of one and only one TWY Taxiway [TWY]
either must be on one and only one RWY_DIRECTION RWY direction
... or must be on one and only one TWY Taxiway [TWY]
... or must be on one and only one FATO_DIRECTION Approach and take-off direction of a FATO
TWY_LGT_SYS TWY lighting system
... a type of
SURFACE_LGT_SYS
Attributes
... see as well the attributes of the super-type entity
CODE_PSN Part
Relationships
... see as well the relationships of the super-type entity
must be owned by one and only one TWY Taxiway [TWY]
UNIT Organisation unit providing services
Attributes
TXT_NAME Name
CODE_TYPE Type
CODE_CLASS Classification
CODE_ID Coded Identifier
GEO_LAT Latitude
GEO_LONG Longitude
CODE_DATUM Datum
TXT_RMK Remark
Relationships
may be located at one and only one AD_HP Aerodrome / Heliport
Rule:
  1. The position given by GEO_LAT, GEO_LONG must be plausibly close (less than 20 KM) to that of the ARP of the related AD_HP.
may be the parent in one or more UNIT_ASSOC Unit association
This relationship, together with the other relationship between these same entities allows the association of UNITs to each other (as indicated in attribute CODE_TYPE_ASSOC) in UNIT ASSOCIATION.
may be providing one or more SERVICE Service
may be the child in one or more UNIT_ASSOC Unit association
As an UNIT often exists partly or wholly 'inside' another, it is necessary to be able to relate this entity to others of its kind. This necessary relationship, together with the other relationship between these two entities allows the association of UNITs to each other (as indicated in attribute CODE_TYPE_ASSOC) via the entity UNIT ASSOCIATION.
must be supervised by one and only one ORG_AUTH Organisation or authority
may be having one or more ADDRESS Address
UNIT_ASSOC Unit association
Attributes
CODE_TYPE Type
TXT_RMK Remark
Relationships
must be having as parent one and only one UNIT Organisation unit providing services
must be having as child one and only one UNIT Organisation unit providing services
may be active according to one and only one TIMETABLE Timetable
VOR VHF omnidirectional radio range beacon [VOR]
Attributes
CODE_ID Identification
GEO_LAT Latitude
GEO_LONG Longitude
TXT_NAME Name
CODE_TYPE Type
VAL_FREQ Frequency
UOM_FREQ Unit of measurement [frequency]
CODE_TYPE_NORTH North reference
VAL_DECLINATION Station declination
VAL_MAG_VAR Magnetic variation
DATE_MAG_VAR Magnetic variation date
CODE_EM Emission
CODE_DATUM Datum
VAL_GEO_ACCURACY Geographical accuracy
UOM_GEO_ACCURACY Unit of measurement [geographical accuracy]
VAL_ELEV Elevation
VAL_ELEV_ACCURACY Elevation accuracy
VAL_GEOID_UNDULATION Geoid undulation
UOM_DIST_VER Unit of measurement [vertical distance]
VAL_CRC Cyclic redundancy check
TXT_VER_DATUM Vertical Datum
TXT_RMK Remark
Relationships
may be used as one and only one SIGNIFICANT_POINT Significant point
may be co-located with one and only one DME Distance measuring equipment [DME]
must be under the responsibility of one and only one ORG_AUTH Organisation or authority
may be co-located with one and only one TACAN Tactical air navigation beacon [TACAN]
may be also broadcasting one and only one SERVICE Service
may be [used to define] one and only one DEPRECATED-4.5 MSA_GROUP MSA group
may be recommended for one or more PROCEDURE_LEG Procedure leg
may be operating according to one and only one TIMETABLE Timetable
may be used to define one or more ANGLE_INDICATION Navaid - Angular reference - Version
may be unmonitored according to one and only one TIMETABLE Timetable
may be limited by one or more DEPRECATED-4.0 [VOR_LIMITATION] VOR Limitation
may be having one or more VOR_USAGE_LIMIT VOR usage limitation
VOR_USAGE_LIMIT VOR usage limitation
Attributes
CODE_TYPE Limitation type
TXT_RMK Remark
Relationships
must be limiting the use of one and only one VOR VHF omnidirectional radio range beacon [VOR]
may be made of one or more NAVAID_LIMITATION Navaid Limitation
[AIRSPACE_ASSOC] DEPRECATED-4.0 Airspace association
Attributes
[CODE_TYPE] DEPRECATED-4.0 Association type
[CODE_OPR] DEPRECATED-4.0 Association operation
[NO_SEQ_OPR] DEPRECATED-4.0 Association operation order
[TXT_RMK] DEPRECATED-4.0 Remark
Relationships
must be having as child one and only one DEPRECATED-4.0 AIRSPACE Airspace
must be having as parent one and only one DEPRECATED-4.0 AIRSPACE Airspace