This is not in a generic manual. This is calculated by Boeing engineers exclusively for that tail number's weight variant.
The B777 QRH is designed around a "Read and Do" philosophy. The layout is optimized for high-stress environments: Condition Statement: Briefly explains what happened (e.g., "CABIN ALTITUDE"). Objective: What the checklist aims to achieve. Step-by-Step Actions: Clear, unambiguous instructions. The Digital Shift Modern "exclusive" B777 setups are moving toward iPad-based Electronic Flight Bags (EFBs) b777 qrh exclusive