Because in the 787, the FCOM isn't just a manual. It is the airplane's brain, printed for human eyes.
If you are an aspiring Dreamliner pilot, your first task is not to touch the side-stick—it is to open the FCOM. Study the Electrical chapter until you can trace the bus paths in your sleep. Understand the FBW laws. And always, always know where the RAT is. 787 fcom
The 787 FCOM taught the industry that the manual is no longer a book; it is a . Conclusion For the professional pilot, the 787 FCOM is the ultimate arbiter of safety. It explains why the largest composite fuselage in commercial aviation bends (but does not break), why the batteries needed a steel box (after the 2013 redesign), and how to land without engine thrust on a dark night over the Pacific. Because in the 787, the FCOM isn't just a manual