Regarding Alert Height; what, when & how do guys use this for a Fail Passive (2 A/P) approach?
Alert height is integral to the fail OPERATIONAL concept.
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2 op:
My current and previous airlines WRITE nothing apart from what FCOM suggests, and beyond what is available from Airbus' Getting to Grips with CATII/III. Already quoted above.
Individual trainers and respected opinion makers SAY it is a technical and legal possibility to take over and continue manually, however:
In close limiting conditions such as those programmed into the SIM for the LVP excercise, pilots who attempt and land after autoland failure almost without exception regret that decision when asked to self-assess during the debriefing.