1. Where/when did they do it? (It is not in the transcript)
A RA - here a RV-5M - doesn't generate a 400 Hz warning sound some 30 m too late. I know that one quite well. If we have a sound at 60 m, it means it was set to 60 m.
As I wrote before, 60 m would be exactly the setting according to Tu-154M FM.
Cross-checking the transcript with the Tu-154M FM, the "before approach" checklist is missing. Not a word spoken.
Arrakis