Checklists use a "Challenge-Response" format, ensuring each step is verified by both pilots. Visual Distinction:
They’d just completed preflight when the dispatcher’s voice crackled: “Runway 25L closed for inspection. Expect delay.” A frustrated chorus rose from the cabin—business travelers tapping screens, a child who wanted to sleep. Mira held her ground. Delays were part of the job. She thumbed open the worn Quick Reference Handbook stapled into the yoke pocket: the terse, bullet-pointed bible every crew kept close. Its pages were edges of habit and safety, an atlas of contingencies. boeing 737-800 qrh quick reference handbook