Given my comments on the tail failure thread, I am not surprised about the reduced temerature limits. The strength of adhesive bonds depends strongly on temperature, with lower temperatures causing higher stress at failure but also causing the adhesive to become very brittle. The overall strength of an adhesive depends on the area under the stress-strain curve, so even though the failure stress is higher, the lack of ductility means that the adhesive bond may be weaker. Combine that with a large number of micro-voids and the strength could become critical at low temperature. Therefore given their current issues with the Doha incident, a reduction of the operating envelope is prudent.
I am surprised that there are not weight restrictions as well, given the significant loss of strength which micro-voids cause.
Still haven't heard from AW.
Regards
Blakmax