Lomapaseo, in defense of safetypee, there are really two discussions going on that have become intertwined. The first, which was the original subject of this thread, was a shutdown and air turnback. GE has reported to the operators that it was due to a cracked AGB. Not good, but the GEnx-1B shutdown rate remains impressively good (especially given it's a brand new engine) - much better than that required for 180 minute (or even 330 minute) ETOPS.
The second discussion was another poster pointed out that there were
also three uncommanded rollbacks during the preceding week or so that someone speculated was due to a software error (which it most definitely was not).
One of the rollbacks was initially reported as suspected Ice Crystal Icing, however that was later determined to be incorrect.
Now back to your regularly scheduled debates
