What do you have to say about the CAA/FAA safety circulars?
TALPA concept was designed based on safety concerns pertaining those circulars. It's an realistic assessment principle independent of the manufacturer. Boeing or airbus can adopt it as they wish. It's not a rule yet.
If your actual landing distance as per Boeing QRH (unfactored) is 7000 ft, can you apply it and land safely?
Well, if you believe to able to perform a test landing then do it otherwise you can declare MAYDAY and ask for the ground services to standby as you'll have to land anyway presuming that's the only choice given by ATC, as per Scenario.
