And we should remember that the 787 did fly for over a year without major incident, so how long is long enough when it comes to proving oneself with flying?
It seems extra ordinairy meassures were taken by Boeing and the airlines to keep 787 dispatch reliability up, which is different from aircraft reliability. Even 100+ battery exchanges didn't ring a bell. The FAA is reviewing all. The question is in how far they are covering their .ss and how much the truth about 787 is becoming clear.
How Airlines Kept 787s on Schedule - WSJ.com