Normal configuration: Left SG → Left Main AC Bus → Left DC Bus. Right SG → Right Main AC Bus → Right DC Bus. APU SG can power either. Center bus powered by left or right through auto bus tie breakers (BTBs). No cross-tie from L to R unless both BTBs closed.

| Volume | Part | Title | Key 787-specific content | |--------|------|-------|---------------------------| | | SP | Systems Description | Detailed system architecture, normal ops logic | | 1 | NP | Normal Procedures | Cockpit prep, flows, checklists, performance data | | 2 | AE | Abnormal / Emergency | ECAM-like (EICAS) procedures, QRH integration | Unlike Airbus (FCOM separate from QRH), Boeing bundles QRH-style checklists into the AE section. 3. Key Sections in Detail SP – Systems Description (Volume 1) Organized by ATA chapter but with 787 innovations: