Against my better judgment:
The decision to accept or reject the signal and be silent at <60 kts is what is being pointed to as a design oversight. This isn't new. To avoid spurious warnings at low speed on T/O or Ldg with a WoW avoids spurious warning. Any other time, weight off wheels, that you approach those values, the warning will have already been going off long before the "threshold" value of 60 kts.
HazelNuts covered the rest.
See also Confiture's point about air flow when falling at 10,000 fpm.
Last edited by Lonewolf_50; 21st May 2013 at 21:29.