Hi BOAC - yes, concur with some system that makes auto-trimming of the THS sensible, (IIRC, the A320 auto-trim system on the Perpignan accident stopped trimming when the stall warning occurred, but I'd have to go back to the report and the data - I also recall that it reached 13deg at the same time the stall warning occurred so it may be coincidental - I couldn't find anything in either type's AMM that indicates that the THS stops with a stall warning.