FinalApproachSegmentDataBlock
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock
The additional information about the Precision Final Segment. Most attributes describe the LPV path point record required for WAAS procedures.
| Properties | Definition | Type |
|---|---|---|
| approachPerformanceDesignator | Approach Performance Designator. A number from 0 to 7 that identifies the type of approach. |
Integer |
| verticalAlarmLimit | 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. |
Decimal |
| thresholdCourseWidth | 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. | ValDistanceType |
| satelliteBasedAugmentationSystemServiceProvider | SBAS Service Provider Identifier. A number from 0 to 15 that associates the approach procedure to a particular satellite based approach system service provider. |
Integer |
| routeIndicator | 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. |
CharacterString |
| remainderCyclicRedundancyCheck | Hexadecimal representation of the 32-bit CRC used to check the integrity of the FAS data block. | ValHexType |
| referencePathIdentifier | Reference Path Identifier. A four-character identifier that is used to confirm selection of the correct approach procedure. |
CharacterString |
| referencePathDataSelector | Reference Path Data Selector (RPDS). A number (0-48) that enables automatic tuning of a procedure by LAAS avionics. |
Integer |
| operationType | Operation Type. A number from 0 to 15 that indicates the type of the final approach segment. |
Integer |
| lengthOffset | Distance from the stop end of the runway to the Flight Path Alignment Point | ValDistanceType |
| horizontalAlarmLimit | 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. |
Decimal |
| codeICAO | The first two designators of the ICAO location identifier, as identified in ICAO Doc 7910. |
CharacterString |
approachPerformanceDesignator
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@approachPerformanceDesignator
Approach Performance Designator. A number from 0 to 7 that identifies the type of approach.
type: Integer
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
approachPerformanceDesignator |
verticalAlarmLimit
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@verticalAlarmLimit
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.
type: Decimal
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
verticalAlarmLimit |
thresholdCourseWidth
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@thresholdCourseWidth
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.
type: ValDistanceType
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
thresholdCourseWidth |
satelliteBasedAugmentationSystemServiceProvider
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@satelliteBasedAugmentationSystemServiceProvider
SBAS Service Provider Identifier. A number from 0 to 15 that associates the approach procedure to a particular satellite based approach system service provider.
type: Integer
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
serviceProviderSBAS |
routeIndicator
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@routeIndicator
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.
type: CharacterString
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
routeIndicator |
remainderCyclicRedundancyCheck
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@remainderCyclicRedundancyCheck
Hexadecimal representation of the 32-bit CRC used to check the integrity of the FAS data block.
type: ValHexType
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
CRCRemainder |
referencePathIdentifier
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@referencePathIdentifier
Reference Path Identifier. A four-character identifier that is used to confirm selection of the correct approach procedure.
type: CharacterString
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
referencePathIdentifier |
referencePathDataSelector
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@referencePathDataSelector
Reference Path Data Selector (RPDS). A number (0-48) that enables automatic tuning of a procedure by LAAS avionics.
type: Integer
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
referencePathDataSelector |
operationType
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@operationType
Operation Type. A number from 0 to 15 that indicates the type of the final approach segment.
type: Integer
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
operationType |
lengthOffset
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@lengthOffset
Distance from the stop end of the runway to the Flight Path Alignment Point
type: ValDistanceType
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
lengthOffset |
horizontalAlarmLimit
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@horizontalAlarmLimit
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.
type: Decimal
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
horizontalAlarmLimit |
codeICAO
urn:aero:airm:1.0.0:LogicalModel:Subjects:AirspaceInfrastructure:RouteAndProcedure:FinalApproachSegmentDataBlock@codeICAO
The first two designators of the ICAO location identifier, as identified in ICAO Doc 7910.
type: CharacterString
| Model | Concept |
|---|---|
|
AIXM 5.1.1 |
codeICAO |