Altn law
I got it.
I think some of the TRI/TRE I know don't have it clear in their mind.
I saw double SFCC fault (slat channel) showing ALTN LAW, and the TRE asking me to count for ALTN LAW LDF .......
Anyway I think you're definitely right and the explanation is ok to me.
Regarding TAP videos, they're very nice and I found a lot of them on utube. It's nice to see how they deal with the initial part of the ECAM philosophy but they almost never show STATUS reading, dealing with the failure (for example Flaps/Slats locked for extension) and the subsequent LDF computation.
Thanks anyway.