Originally Posted by
Mad (Flt) Scientist
It seems to be intended to enhance/amend/adjust stall characteristics, not to make a more fundamental design change.
I simply cannot see this.
If the stab was required to assist the elevator for controllability on this flight phase I would be looking closely at all longitudinal controllability tests required by the FAR.
I can't see a situation where an aircraft had insufficient nose down elevator power but a bit of slow response stab trim is an acceptable fix.
Elevator on the forward stop during a stall, so just slowly wind in a bit of stab as fix. That would not come near being compliant with stall handling requirements.