Don't really think the A/T selecting idle thrust when you don't particularly want it means "the aircraft was not really fit to fly"
A bit of a pain in the ass perhaps, but finally, the A/P & A/T are merely there to do your job for you. If they don't do it as you wish (& it is incumbent upon you to check they do) you switch them off & DIY.
Really truly lets drop this cr@p.
Chances are the reason previous crews didn't write up the radalt prob in the tech-log wasn't to avoid making work for the ginger-beers, but more likely because they simply didn't notice.
On a Cat1 approach to a manual landing it is a total non event, so let's quit trying to blame the A/T or RADAlt for the fact the crew (for whatever reason still to be established ) were not flying, nor monitoring the performance of the A/P, A/T and more pertinently , the A/C.
END OF STORY.
