This is the "How it works" section. It is dense with schematics that are color-coded:
The is the primary resource provided by the manufacturer (in this case, Boeing) to the airline and the flight crew. Its purpose is to outline exactly how to operate the aircraft. While the pilot’s operating handbook might cover the basics in general aviation, in the world of heavy jets like the 787, the FCOM is a multi-volume encyclopedic set of procedures, limitations, and systems descriptions. 787 fcom
To understand the detail of the 787 FCOM, let us look at the (Chapter 8): This is the "How it works" section
It provides the operational limitations, normal/non-normal procedures, and system descriptions needed to fly safely. While the pilot’s operating handbook might cover the
Crucial tables for calculating takeoff speeds ( ), landing distances, and fuel burn. Key System Highlights in the 787
The 787 FCOM is not meant to be read from cover to cover on the ground. It is an tied to the EICAS messages .
The FCOM is typically divided into two main volumes and a set of supplemental manuals: Volume 1 (General & Performance):