CS AWO.A.SVGS.122 Aircraft position monitoring and alerting
ED Decision 2022/007/R
The SVGS shall provide a means of monitoring the difference between the intended flight path and the actual flight path. Information shall be provided to the flight crew to enable the monitoring of progress and the safety of the approach operation.
Such information shall be clear and unambiguous, and shall indicate to or alert the flight crew when the position of the aircraft with respect to the intended path becomes hazardous due to either:
(a) the aircraft being out of position with respect to the defined flight path;
(b) an error in the navigation guidance being followed; and/or
(c) an error in the position of the SVGS scene.
The alerts shall be displayed in the pilot’s primary FOV, and shall be active at least from 300 ft height above touchdown to the MAPt.
The time-to-alert shall be compliant with the intended operation as defined by ICAO Annex 10 Vol. 1 Section 3.1.5.7.3.1.
[Issue: CS-AWO/2]
CS AWO.A.SVGS.123 Excessive deviation
ED Decision 2022/007/R
An alert shall be displayed to the pilot when the lateral and vertical deviation exceeds the acceptable limits from the guidance being followed.
Refer to CS AWO.B.SACATI.115, CS AWO.B.CATII.115, or CS AWO.B.CATIII.120.
[Issue: CS-AWO/2]
CS AWO.A.SVGS.124 Annunciation of the system’s mode and status
ED Decision 2022/007/R
Any detected SVGS malfunction that can adversely affect the normal operation of the SVGS shall be visually annunciated to the flight crew.
The SVGS display shall indicate when SVGS operations are not authorised. Alerts shall be displayed in the pilot’s primary FOV.
[Issue: CS-AWO/2]
CS AWO.A.SVGS.125 Determination of the missed approach point (MAPt)
ED Decision 2022/007/R
The SVGS shall provide a clear and unambiguous means to inform the pilot when they pass through the point/altitude at which the visual external cues shall be acquired to continue the approach.
[Issue: CS-AWO/2]
CS AWO.A.SVGS.126 Altimetry requirements
ED Decision 2022/007/R
The SVGS display shall include a radio altitude display or another system that provides height above terrain with equivalent performance, accuracy, integrity, availability, level of independence, and dissimilarity.
[Issue: CS-AWO/2]
CS AWO.A.SVGS.127 Barometric altimeter / air data source
ED Decision 2022/007/R
The altitude source used for the SVGS display shall be consistent with that used for the on-board terrain awareness and alerting system on the aircraft, and shall not provide contradictory indications of vertical terrain clearance.
If barometric altimetry is used to determine the MAPt, then it shall be temperature compensated.
[Issue: CS-AWO/2]
CS AWO.A.SVGS.128 Geometric altimetry/GPS data source
ED Decision 2022/007/R
If geometric/GPS altimetry is used, it shall display geometric altitude relative to mean sea level (MSL).
[Issue: CS-AWO/2]