No one has said how interested Boeing must be about this. Surely, with 100's of B747's around the world, Boeing would like to know if it is latent problem of the type. Equally, all this chat about blame is so childish. It is disappointing to realise that for some groups of employees it could be an issue. Surely the correct attitude is to have a calm investigation/consideration of any incident so as to understand fully how it happened and avoid any repetition. That is the professional reaction and how it should be in all companies.