It is worthwhile reading the ATSB report released in May 2011 reached at the link below.
The latest fix for this ongoing HPC stage 1 blade problem is SB RB211-72-GO36 which was issued in Feb 2009. This covers revised geometry blades.
At the time of issuance of the report, only 18% of QF's engines had this SB incorporated. At that time there was no apparent urgency to implement the SB, but the SB would be incorporated when other work was required on the HPC:
"The operator is continuing to embody SB RB211-72- G036, issued in 2009, at engine shop visits where the HPC module is removed. However, should the rate of failures increase significantly, a review of current modification policy will be undertaken."
I don't know if the failure rate has increased significantly. But the perception is that it has, certainly more than the 0.8 events per year predicted by RR and quoted in the ATSB report.
The question remains as to whether QF has increased the pace of SB implementation since then.
If QF has not voluntarily sped up the SB implementation, then CASA needs to urgently review this case.
http://www.atsb.gov.au/media/3422442...040.pdf#page=9