The stall warning discontinued when the speed was BELOW 60 Kts. How in blazes do you fly a large jet at 35000 ft at a speed of 60 Kts ?? At that height the speed has to be above 270 Kts. The stall warning is of no use to the pilot below 60 Kts
If the IAS gets down to 60 Kts and the wheels are not on the ground then the aircraft must be very badly stalled. Disabling the stall warning makes no sense.
This is not a feature, it is a bloody stupid design error.
If the stall warning sounds all pilots are trained from PPL level to expect it to continue until the stall has been recovered. Stopping the horn while the aircraft is still stalled is dangerously misleading and IMHO is a major contributing factor in this accident.