Unless of course you are disregarding the fact that Sky has been spouting off for the past couple months that each part placed on an airframe is cataloged in detail. "EACH PART"
That would assume that each part has a individual serial number to track which piece belongs to which airframe, not to be mistaken with part numbers.
I don’t even read most of skyeagle’s posts that miss the point 99.99% of the time.
Where is the log/record that connects that part serial number (144B/8) to Flight 77?