Class - FASDataBlock

<< object >> AIXM_v.5.1.1.AIXM.AIXM Features.Procedure.Approach Procedure.3 - Segment Leg

<<object>> Final Approach Segment Data Block. The additional information about the Precision Final Segment. Most attributes describe the LPV path point record required for WAAS procedures.

List of attributes

Name	Data Type	Definition
approachPerformanceDesignator	NoSequenceType	Approach Performance Designator. A number from 0 to 7 that identifies the type of approach.
codeICAO	CodeICAOCountryType	The first two designators of the ICAO location identifier, as identified in ICAO Doc 7910.
CRCRemainder	ValHexType	Hexadecimal representation of the 32-bit CRC used to check the integrity of the FAS data block.
horizontalAlarmLimit	ValAlarmLimitType	(ARINC) Horizontal Alert Limit (HAL) is the radius of a circle in the horizontal plane (the local plane tangent to the WGS-84 ellipsoid), with its centre being at the true position, which describes the region which is required to contain the indicated horizontal position with the required probability for a particular navigation mode assuming the probability of a GPS satellite integrity failure being included in the position solution is less than or equal to E-4 per hour.
lengthOffset	ValDistanceType	Distance from the stop end of the runway to the Flight Path Alignment Point
operationType	NoSequenceType	Operation Type. A number from 0 to 15 that indicates the type of the final approach segment.
referencePathDataSelector	NoSequenceType	Reference Path Data Selector (RPDS). A number (0-48) that enables automatic tuning of a procedure by LAAS avionics.
referencePathIdentifier	CodeReferencePathIdentifierType	Reference Path Identifier. A four-character identifier that is used to confirm selection of the correct approach procedure.
routeIndicator	CodeRouteIndicatorType	Route Indicator. A single alpha character (A through Z or blank, omitting I and O) used to differentiate between multiple final approach segments to the same runway or heliport.
serviceProviderSBAS	NoSequenceType	SBAS Service Provider Identifier. A number from 0 to 15 that associates the approach procedure to a particular satellite based approach system service provider.
thresholdCourseWidth	ValDistanceType	The width of the lateral course at the Landing Threshold Point (LTP). This width, in conjunction with the location of the Flight Path Alignment Point (FPAP) defines the sensitivity of the lateral deviations throughout the approach.
verticalAlarmLimit	ValAlarmLimitType	(ARINC) Vertical Alert Limit (VAL) is half the length of a segment on the vertical axis (perpendicular to the horizontal plane of WGS-84 ellipsoid), with its centre being at the true position, which describes the region which is required to contain the indicated vertical position with a probability of 1-E-7 per approach, assuming the probability of a GPS satellite integrity failure being included in the position solution is less than or equal to E-4 per hour.

Navigable associations from FASDataBlock

Association	Multiplicity	Role	To	Role description
hasAnnotations	0..*	annotation	Note

Navigable associations to FASDataBlock

From	Association	Multiplicity	Role	To	Role description
FinalLeg	has	0..1	FASData	Data used in the CRC calculation of the FMS box to insure the final segment of an approach procedure has not been modified.

Used By (diagrams)

1 - Final Segment Leg Conditions

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Class - FASDataBlock

List of attributes

Navigable associations from FASDataBlock

Navigable associations to FASDataBlock

Used By (diagrams)