Beagle,
While 'Shall' denotes a mandatory requirement, the word 'should' expresses a recommendation or advice.
That's exactly why I posted my reply and we obviously agree on that point. But the discussion I entered was with regard to the legality of a descent from the required "1,000 ft above" under IFR in order to land. Some here have stated that it has never been legal except on a published let down. The CAA, now our "Competent Authority" do not presently agree with that statement and as far as I can tell, have never historically decreed it illegal, although the documentation I have to hand only goes back 45 years or so.
