[pfflier]

The hole as pictured, next to several stamp marks in the metal, possibly indicate it was a documented defect that was repaired.

The stampings may be similar to a method we used at a major US aerospace company to document a repair. We would ink stamp an area near a repair with the QA documentation method that allowed the repair.

A repair, by definition in MIL-STD-1520/ISO 9000:2000, may make a component functional but not in compliance to original engineering documentation.

In this case, the repair may have been a patch or plug that failed revealing the original defect.

[null and void]

The hole as pictured, next to several stamp marks in the metal, possibly indicate it was a documented defect that was repaired.

I don't see stamping, I do see a couple scuffs where the chuck rubbed against the rib that look a little like black QA stamps.

Several false starts and drill bit skipping. Miscreant was either quite drunk/drugged or very nervous, or unable to properly brace in zero g.

[Ozark Tom]

STS 93 gold-pin failure more exciting.