JD-EE
Heh. Given that landing speeds of most transport category aircraft are well in excess of 60 knots (A330 looks to be 135-145kts, depending on weight and other conditions) an aircraft in that class with a stall warning at 60 kts below 1000 feet has been in deep manure for too many seconds, and has most likely been gettting stall warnings since long before that ...
Which makes me understand why clipping it at sixty might seem to make sense in the design process, but that seems to indicate a design assumption:
That stall will be triggered at low speed and low altitude? (I may not have successfully reverse engineered the thought process on that one ... )