@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.
ALT1:
Pitch attitude (
Θ) protection lost.
Hi Speed and Stall speed are alternate.
ALT1A:
As ALT1 but Stall protection is lost.
ALT2:
As ALT1 but lateral normal law is lost and replaced by
lateral alternate (Roll = DIRECT; Yaw = Alternate)
ALT2A:
As ALT2 (Stall protection is lost)
ALT2B:
Pitch attitude (
Θ) protection lost.
Hi Speed and Stall protection lost.
Bank angle protection lost
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Source: ?? my personal notes.