The PF maintains control of the aircraft. Their sole responsibility is to fly the airplane, navigate, and communicate with Air Traffic Control (ATC). The PF never looks down at the QRH during critical flight phases. The Pilot Monitoring (PM)
While paper QRH binders remain mandatory backups in many cockpits, the modern Boeing 737-800 fleet has largely transitioned to the Electronic Quick Reference Handbook (eQRH).
Whether accessed as a traditional paper manual or as a modern, interactive iPad app, the QRH ensures that every action a pilot takes is informed, standardized, and effective. For anyone aspiring to understand the "secret sauce" of airline safety, mastering the purpose and structure of the QRH is the best place to start.
(Engine failures, stalls, overspeeds)
The Pilot Flying (PF) maintains aircraft control and assesses the situation before any troubleshooting begins.
The Pilot’s Lifeline: A Deep Dive into the Boeing 737-800 Quick Reference Handbook (QRH)
Before you handle a fire, you must understand the rules. This section defines "crew actions," "stabilized approach," and how to use the checklists (Challenge/Response versus Read & Do).
They followed the QRH step by step. Instruments showed a mild increase in vibration index, oil temperature within limits, no obvious bleed or fire. Jonas communicated with ground: maintenance dispatched to visually inspect. Outside, a mechanic raised a flashlight and waved them in. The rain amplified the hush of the night, each drop a metronome in the background of their deliberation.
Outside, dawn came pale and decisive, washing the runway in muted gold. The QRH returned to its pocket, quiet and unremarkable, yet carrying within it a thousand nights’ worth of trust. As Flight 419 slid into its gate and passengers unfastened belts with a collective exhale, Captain Mira realized that flying wasn’t just the science of aerodynamics and engines—sometimes it was the simple act of following the right words at the right time.
Certain emergencies happen too fast to allow pilots time to open a book. Memory items are critical steps that the flight crew must memorize perfectly and execute immediately from memory. Examples of 737-800 Memory Items include:
✅ Organized by system for rapid deployment.✅ Standardized: Ensures both pilots are on the exact same page.✅ Comprehensive: Covers everything from "Engine Overheat" to "Loss of Cabin Pressure."
Indented bullet points using "IF" and "THEN" logic to guide pilots through different system failure variations. Non-Normal Performance Data
For pilots: Using a QRH that is even one revision out of date is a violation and potentially fatal. Before every flight, the pilot checks the “QRH Revision Number” vs. the company’s current list.
The primary goal of the QRH is to ensure that crews follow standardized, approved procedures to troubleshoot problems, thereby ensuring the safety of the aircraft, passengers, and crew. Structure of the QRH
In a Level D simulator, instructors throw multiple failures: