Ericferret,
As Deux Cent Vingt Cinq said in the “Sikorsky S-92: From Design to Operations” thread :
It's known that Titanium bolts more susceptible to stress fracture, than steel, if not treated carefully and are not suited to applications that require frequent torque cycles. (just google titanium bolts, and you'll find a wealth of information about why they are used, and also why they are not used, depending on the application!)
there is an issue of using titanium.
Greetings,
Finalchecksplease