For non-immediate threats, the crew follows a structured reading cycle:
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Critical data for non-normal configurations, including landing distances for broken flaps, iced wings, or single-engine operations.
Step-by-step procedures to mitigate system faults, computer failures, or degraded performance.
The execution of a 787 QRH checklist follows a strict hierarchical workflow divided into immediate actions and referenced actions. Memory Items (Unannunciated/Critical)