Re the Dutch report.
Wrong!
No single RADALT failure could have the effect that the prelim report stated.
RADALTs always have comparators.
In the a/c that I fly you can even continue an autoand after a RADALT fail.
RADALTS are known to be unrelaible, are they not?
I disbelieve this notion about the TLs going to FI due to a single RADALT failure.