I really don't want to get into the precise calculations for landing downwind on runway 12 at Kingston.
I was simply trying to get down to a basic thought process that surely we were all taught (in my case in 1962).
That basic thought process goes like this.
Do not assume that the headwind on take-off or landing will always be at its maximum value. Work on 50% and you should be safe.
If you insist upon taking-off or landing with a tailwind, then you should realistically work on the tail wind being 150% of its assumed value.
Nothing more complicated than that.
So, were AA pilots never taught that landing with a tailwind on a wet runway which was not grooved could possibly be injurious to their health? Did they really have to be taught this?
If so, I am astonished.