as350 blades
Over the 12 years of operating the 350, we have had great success using blade stands when ever the helicopter is on the ground, in a hangar or otherwise (under all wind conditions). The blade stand consists of an adjustable aluminium pole with a blade cradle which slides over the end of the blade, and then is adjusted to unload the starflex whilst supporting the blade at the end in a lightly loaded configuration.
We started doing this religiously following some blade and starflex issues and we have never had a single problem since (over 10 years). Our starflexes always go to SLL and the first problem we suffer with the baldes shows up in paint erosion, no delaminating of leading edges or anything else. It works extremely well.
Hope this helps.