My continuation. The 747 is a monstrous Aircraft. Miles of cabling, many systems, boxes, junctions, cannon plugs, on and on. We are talking millions, maybe billions of words in the manuals. I would like to think that NWA had a well kept aircraft and associated manuals most likely today on digial format. Doesn't matter to FAA, they are now Baltia's and need to evaluated for accuracy.
One other thing, every manual has many links to another book, another system, etc, etc. Each and every one needs to be checked, again for accuracy. 45 days, I don't think so.
Sorry if I bored you, I'll now go back into my hole and continue to read every line entered, and sometimes shake my head.
28 year Air Force Retiree, 1985