I've been reading this section of the forum over the last few hours with great interest.
What strikes me as a defining moment is when the nose was pushed down and the stall warning was reactivated. This apparently caused the PF to pull the nose back up, sealing the fate of everyone aboard.
One major problem, as I read it, was the stall alarm came on as the plane slowed and then shut off as the airspeed dropped below a minimum threshold. Then the PF pushed the nose down which brought the airspeed back up, causing the stall warning to appear again. In the confusion maybe everyone had it backwards - that the plane was OUT of stall when the alarm first stopped, and was BACK in stall the second time. This might have caused the startled PF to pull the nose back up in a WTF moment. There is no "begin stall warning" or "end stall warning" sound effect, correct?
If this is the case, I think a simple doppler-type sound could be superimposed on the warning as a "directional" enhancement. As you go INTO a stall, a high frequency sound slowly drops to a lower frequency (tied to airspeed/pitch etc) and could be heard under the stall alarm. When the airspeed drops to the minimum threshold the warning stops as it did. As the plane regains airspeed and the stall warning reactivates, the doppler sound resumes, going from a low to high frequency until the craft recovers from the stall and the alarm shuts off. The fact is the pilot now has a direction tied to the stall, where he/she is in the stall, and the progress being made to recover from the stall.
The doppler sound would be dynamic, that is it would be a real-time sound that would reflect actual conditions. If the plane touched on stall conditions and dipped slightly lower before recovering, you would hear the high freq drop slightly, then rise back up until the stall alarm stopped.
With this aural clue, there would be no mistaking where the stall is occurring, and if you are going deep into one or recovering from a stall below the alarm's threshold.
I apologize in advance if I offend anyone here with my ignorance - I'm a platinum flyer and just self-loading-cargo, that's all.
I appreciate all that I read here - you good folks are just trying to understand this and I thank you for caring enough to try and figure this out. It's comforting to me and for all of the other "pax" reading this
