The Flight Crew Operations Manual is the approved document containing all limitations, normal procedures, non-normal procedures, and systems descriptions necessary to safely operate the 787. It is not a training manual; it is the legal reference for the flight deck.
The 787 uses a Common Core System (CCS) built on open-source Linux architecture. The FCOM emphasizes that the CCS hosts two critical applications: 787 fcom
Because of this, the FCOM contains new procedures for "CCS Reboot" and "Application Restart" that feel more like IT troubleshooting than traditional aviation. The Flight Crew Operations Manual is the approved
SP.1.3 - Electrical Power Generation
Unlike previous Boeings, the 787 generates power at 235V AC (variable frequency) via two engine-driven Starter/Generators and two APU Starter/Generators. There are no constant speed drives. If a generator loses its cooling (provided by ram air via the ASE—Air Supply Equipment), the FCOM directs you to observe a "GEN COOLING" caution and land as soon as practical, not immediately. Because of this, the FCOM contains new procedures