Originally Posted by
Salusa
Im sure it's the VHA blades
I think if it was blade related it would be more of a fleet wide issue vs only a handful of incidents.
I do find VH blades more sensitive to installation requirements and adjustments than Bell blades. So I find when the blades are not aligned per VH guidance and the MR trunnion not centered correctly, you start any balance work 2 steps behind especially when alignment errors of a string-width can make a difference even on Bell blades. Even VH notes that the sweep point is different on their blades during alignment.
As to the tail wag, that is found on Bells as well and is usually related more to trunnion centering which if not corrected can cause excessive sweep or chord weight use.
But agree the inflight adjustment routine has a lot to be desired and for some reason it reminds of the voodoo and virgin sacrifices used to get the initial series 407 and 412 blades to fly good. Maybe VH should incorporate product balance pockets and BB use on their blades??? Ha.