What's the news on this one, and how did it come about to be discovered?
The S-92 threads have been very quiet for some time now, this EASA seems to suggest that an issue with the MGB double bypass can negatively affect the mounting studs. Root cause failure analysis?
Sikorsky S-92 helicopters to undergo emergency inspections - The Globe and Mail
http://ad.easa.europa.eu/blob/easa_a..._2009-0217-E_1
Max