Originally Posted by
ecto1
I cannot believe my eyes. The nacelles combined are almost as wide as the body! Can you supply more evidence to torture me?
Speculation, but modelling the wingtips is directed mostly at estimating lift and drag, since this is a critical point in determining fuel consumption. The B737 NG is a well tested design, so there may have been little need to examine the wing box area. The effect of the engines on stability may not have been fully thought through, since the horizontal stabiliser has sufficient authority in most flight regimes. The issues with MCAS relate to dynamic pitch up forces, not overall stability. Perhaps a 'comedy' of errors, under time-pressure? There should be plenty of evidence uncovered by subpoenas, to provide more details of who/when/where/what was decided.