These are used for conditions that allow time for systematic troubleshooting. Pilots open the QRH, find the checklist via the index, and read each step aloud. : Isolating the affected pump. Fuel Imbalance : Opening crossfeed valves to balance tanks. Single Generator Failure : Reconfiguring the electrical bus. How Flight Crews Use the QRH
These are organized by the specific light or alert that appears on the flight deck (e.g., Master Caution or Engine Fire lights). Unannunciated Checklists:
For certain life-threatening situations, pilots must perform specific "memory items" by heart before referencing the QRH to confirm and complete the procedure. Performance Inflight (PI) Data: boeing 737800 qrh quick reference handbook
(Radio or crew alert communication failures).
(Window heat or engine anti-ice malfunctions). These are used for conditions that allow time
Guidance for rapidly descending to 10,000 feet following a loss of cabin pressure.
A standard QRH for the 737-800 (or "Next Generation") is a substantial document—often over 500 pages—organized into the following sections: Quick Reference Handbook (QRH) | SKYbrary Aviation Safety Fuel Imbalance : Opening crossfeed valves to balance tanks
A solid black outline enclosing the initial steps. Any step inside this box must be done from memory.
| Gross Weight | Pressure Altitude | Climb Gradient | Speed | |--------------|------------------|----------------|-------| | 130,000 lbs | 5000 ft | 2.4% | 255 kts |