The is a comprehensive, indexed manual designed for flight crews to address non-normal, abnormal, and emergency situations that arise during flight operations. It is not merely a checklist, but a structured approach to managing failures, providing clear, actionable steps to ensure the safety of the aircraft, passengers, and crew.
Except for memory items, QRH checklists should be read deliberately and calmly. Haste causes crews to shut down the wrong engine or skip critical steps.
Sequential items requiring a challenge-and-response verification between the Pilot Flying (PF) and Pilot Monitoring (PM).
: Vref speeds and stopping distances for failed systems.
These are steps in non-normal procedures that must be performed instantly, without looking at a manual, because time is critical (e.g., rapid depressurization).
(Manual gear extension, brake failures, or nose wheel steering faults).
Often printed on the back cover for routine phases of flight like takeoff and landing. Key Content Highlights
Every non-normal checklist in the Boeing 737-800 QRH follows a strict, standardized visual hierarchy. Memory Items (Memory Steps)
A standard QRH for the 737-800 is organized into several distinct sections to aid quick location of checklists:
Key purposes
(Autopilot or autothrottle disengagements).
The handbook covers over a dozen serious non-normal events, ensuring a structured crew response: Boeing 737 800 Qrh - sciphilconf.berkeley.edu
Most 737-800 operators have transitioned to an version of the QRH. However, the paper QRH remains a mandatory backup.
Mitigations include rigorous operator approval processes, human factors-informed design, regular recurrent training, and cross-checks with FCOM and simulator scenarios.
While normal checklists are in the Flight Crew Operations Manual (FCOM), the QRH is dedicated to abnormal situations.
QRHs are evolving from paper and static PDFs to integrated electronic flight bag (EFB) applications with advantages and new challenges: