My FCOM2 is dated May 2008
It doesn't say Min Sped Reversion is not available on GS, contralyly to another older book I've been shown
Mine also specifically mentions "
alpha floor"
On top of that FCTM says:
The primary feature the autothrottle ARM mode provides is min speed protection in the event the airplane slows to min maneuvering speed.
Whether there is speed reversion on GS or not, I'll surely check it next time I go to the sim, I disagree with:
GS mode is a AP ‘path on elevator’ mode, where the AT controls the selected speed datum. A speed reversion would require AP ‘speed on elevator’
IMHO it only takes the A/T to add power to regain speed, so no A/P "on speed mode" (pitching down) on GS of course.
... and regarding the A/P wiring comments some posts ago, are you sure the A/P automatically disconnects on stick shaker or is it more like A/P cannot be engaged with stick shaker on?
see FCTM:
If an approach to a stall is encountered with the A/P engaged, ... If autopilot response is not acceptable, it should be disengaged
Further down:
Anytime the airplane enters a fully developped stall, the A/P should be disengaged ...