Slight thread drift here but I would like to know the answer to the following question. In the Boeing 737 simulator, we practice high altitude (37,000 ft) approach to stalls (clean) and recovery, and low altitude stall in the landing configuration at 1000 ft on a typical final approach.
The former is not a terrain clearance situation obviously, while the landing configuration stall requires recovery with minimum loss of height.
The buffet preceding the stick shaker during the clean high altitude is quite severe and unmistakeable from weather related turbulence. Taking the worse case, recovery action is taken at stick shaker.
To gain an acceptably safe speed before recovery to level flight the pilot needs to know what speed to look for. The clue may be found in the FCTM under the sub heading Holding airspeeds Not Available from the FMC and states "above FL 250 use VREF 40 + 100 knots to provide at least a 0.3 g margin to initial buffet (full maneuver capability).
Typically in the B737 Classic with a VEF 40 of 130 knots, it means losing height until the IAS reaches 230 knots. This includes high thrust and a nose attitude in the dive of around zero degrees. This results in an average loss of 3000 feet providing the pilot does not allow the nose to rise during the descent and thus delay reaching 230 knots or cause a secondary stall buffet because of over-controlling by a ham-fisted pilot.
However in the case of the landing configuration wings level stall (in the simulator that is) there is no pre-stall buffet - only a stick shaker.
Question: Why is there no pre-stall buffet in the landing configuration stall? Because I don't know.