Originally Posted by
RetiredF4
BEA in its report mentiones the ALT2B law as present, but does not describe in detail, what kind of protections had been lost and which ones still had been active. In my references i couldnīt find what the letter "B" in Alt2B stands for.
According to
http://www.smartcockpit.com/data/pdf...light_Laws.pdf
the loss of Low speed stability and High speed stability depend on the ADR's.
With dual ADR failure Low speed stability is lost, with triple ADR failure High speed stability is lost.
What is not quite clear to me is the question wether and if so how quickly these protections resume once ADR failure has been recovered.
With the speeds being around the 60kts threshold it would be interesting what that means for these speed stability functions.