Take note of the "Oil Tube" image. Enlarge and notice what appears marked as "Misaligned" Counterbore. The arrows point to surfaces that have worn due to vibration and constant relative movement. The missing metal is clearly NOT machined away, evidenced by the round "coving" at the intrusion on to the affected wall. The missing "Rim" material appears to have broken off cleanly, rather than fractured irregularly as the other evidence demonstrates. This would indicate manufacturing problems, but also argue AGAINST an 'off line' end mill. I would propose that this oil line failed primarily due vibration, in situ, and not as the result of some coarse and glaring QA blunder. Replacing this tube to "solve" the Burst issue is therefore unsupportable.
The TRENT is a marvelous Machine. It is ground breaking in its design, and promises many years of loyal and dependable service. Any new machine is probationary, singling out the TRENT for abuse due its "teething problems" is unwarranted. However, shielding these problems from end users is unconscionable.
The lack of disclosure due Qantas, and the apparent complicity of Lufthansa Mx, is in imminent danger of tarnishing the Firm's Reputation. The TRENT remains a marvel, and being dishonest relative to its weaknesses is dangerous.
The FIRM, NOT THE MACHINE.