i) FATO

This page contains the mapping for the following data items as defined in PANS-AIM, chapter 5.3.3.1.1

i) FATO (designation, length, width, threshold point);

These properties, which are considered as minimum for the AIP data set are mapped to the following main AIXM 5 features:

Note:

In AIXM 5, the Runway and its associated classes are used to encode both Runway and FATO. The Runway.type attribute is used to define if the record is an instance of a Runway or a FATO.

Hence, a FATO has to be encoded as Runway with type equal-to ‘FATO’.

PANS-AIM	Description (PANS-AIM)	AIXM 5	Definition (AIXM 5.1.1)	Remarks
Threshold point	The beginning of that portion of the FATO usable for landing.	RunwayCentrelinePoint.role equal-to 'THR'	RunwayCentrelinePoint: An operationally significant position on the centre line of a runway direction. A typical example is the runway threshold. role: The role of an operationally significant position on the centre line of a runway direction.
Threshold point - Position	Geographical location of FATO threshold point	RunwayCentrelinePoint.location.ElevatedPoint and RunwayCentrelinePoint.location.ElevatedPoint.horizontalAccuracy	location: Geographical position of the runway centreline point. horizontalAccuracy: The difference between the recorded horizontal coordinates of a point and its true position referenced to the same geodetic datum expressed as a circular error at 95 percent probability.
Threshold point - Elevation	Elevation of the FATO threshold	RunwayCentrelinePoint.location.ElevatedPoint.elevation and RunwayCentrelinePoint.location.ElevatedPoint.verticalAccuracy	elevation: The vertical distance of the point measured from Mean Sea Level (MSL). verticalAccuracy: The difference between the recorded elevation of a point and its true elevation referenced to the same vertical datum expressed as a linear error at 95 percent probability.	The verticalAccurracy encoded refers to both the elevation and the geoidUndulation.
Threshold point - Geoid undulation	WGS-84 Geoid undulation at FATO threshold position	RunwayCentrelinePoint.location.ElevatedPoint.geoidUndulation and RunwayCentrelinePoint..location.ElevatedPoint.verticalAccuracy	geoidUndulation: The distance of the geoid above (positive) or below (negative) the mathematical reference ellipsoid at the location of the point.	According to ICAO Annex 14, Volume II ...geoid undulation of each threshold of the FATO (where appropriate) shall be measured and reported to the aeronautical information services authority.... Info for accuracy In AIXM 5 the verticalAccuracy refers to both the elevation and the geoidUndulation. Hence, if the verticalAccuracy is coded for the elevation but the accuracy for the Geoid undulation is not known, this should be put into a corresponding Note.
Designation	The full textual designator of the landing and take-off area.	Runway.designator	Runway: A defined rectangular area on a land aerodrome/heliport prepared for the landing and take-off of aircraft. Note: this includes the concept of Final Approach and Take-Off Area (FATO) for helicopters. designator: The designator of a runway, used to uniquely identify it at an aerodrome/heliport.
Length	The longitudinal extent of FATO	Runway.nominalLength and Runway.lengthAccuracy	nominalLength: The declared longitudinal extent of the runway for operational (performance) calculations. lengthAccuracy: Accuracy of the value of the physical length of the runway.
Width	The transversal extent of FATO	Runway.nominalWidth	nominalWidth: The declared transversal extent of the runway for operational (performance) calculations.	AIXM 5 provides a Runway.widthAccuracy attribute. But accuracy is not specified for the width of a FATO in PANS-AIM. (For "TLOF width" and "Runway width" PANS-AIM defines an accuracy.)

(ICAO) AIP Data Set

i) FATO

References