Boeing 737800 Qrh Quick Reference Handbook -

The QRH is a condensed, flight‑deck emergency and non‑normal procedures manual tailored for quick use during time‑critical situations. For the 737‑800 it organizes immediate‑action “memory items” and brief checklists (quick actions and deferred items) so flight crews can stabilize the airplane, maintain safety, then complete detailed troubleshooting or system isolation.