Disclaimer:
▪︎This content is Not an official document and does not represent the views of Airbus or any other aviation authority.
▪︎The information provided may be incorrect or misinterpreted and should not be relied upon for decision-making.
▪︎Always refer to official documents and consult with a qualified aviation professional before making any decisions based on the information provided in this blog post.
▪︎The information provided in this blog post is based on personal study and review.
AUTO LAND WARNING LIGHT
During CAT II or CAT III autoland operations, the specific conditions that trigger the autoland warning light may vary by the aircraft. However, if it flashes, it typically occurs when the aircraft is below 200 feet Radio Altitude (RA).
FMS WARNINGS FOR ILS APPROACH
The FMS also issues warnings to the pilots during an ILS approach when there is a warning associated with ILS 'LANDING CAPABILITY' (indicated by triple-click),
signaling the failure of both localizer and glideslope receivers (flag) or transmitters (flash)
Above 200 ft RA, a transmitter failure under 7 seconds keeps things normal. Beyond 7 seconds, the autopilot disengages. Below 200 ft RA, any transmitter failure triggers a go-around if visibility is poor.
Even if the autoland warning flashes, you can disconnect the autopilot and continue to land, provided that the altitude is above 80 feet, as specified in the FCOM's autoland CAT II autolanding limitation. This is contingent on being in visual conditions. However, this situation is more likely to occur in a simulator environment.
Visual conditions are required above 200 ft AGL, the autoland light flashes below 200 ft, and the autopilot can be disconnected above 80 ft.... 😳
well, I would have just go around?! , happend in simulator..
REQUIRED EQUIPMENT for CAT II/III
When referring to the Quick Reference Handbook (QRH), it specifies the required equipment for CAT II/ III operations. and The autoland light is not FMGS-monitored equipment.
This is likely why we check the autoland warning light using the LS button before initiating the CAT II/III approach.
Antiskid and Nosewheel steering faults are not required for autoland without automatic rollout.
Therefore, it is technically possible to land without these systems if the aircraft is steered using the rudder and brought to a stop on the runway.
The ECAM status indicates 'inop system cat 3 dual' rather than 'cat 2 inop system' in this scenario