At its core, the QRH is a condensed manual containing checklists for nearly every conceivable non-normal or emergency situation. For the Boeing 777, a "Triple Seven" pilot doesn't memorize every step of an engine fire; they memorize the Memory Items
Airlines may modify everything from checklist formatting and terminology to the inclusion or exclusion of certain procedures. As one industry expert noted on a pilot forum, "The ones from Boeing look like all other Boeing QRHs, and they are horrible books. At airlines that elect not to use Boeing generic manuals they all look different depending on what airline it belongs to and what their format preferences are". b777 qrh exclusive
The QRH includes an Exclusive for . Because the aircraft lacks a sensor to definitively confirm that the jettison nozzles are closed or that fuel is flowing symmetrically, the QRH marks certain steps as Exclusive. This requires the crew to physically verify nozzle position (if viewable) and, more critically, to manually monitor the fuel quantity indicators on the EICAS to ensure the tanks are depleting evenly. The automation manages the pumps, but the human must manage the balance. At its core, the QRH is a condensed
Before opening the QRH, apply these:
: Essential steps for every phase of flight, from pre-flight to shutdown. At airlines that elect not to use Boeing
This is not a cop-out but a sober acknowledgment of aviation complexity. Modern aircraft systems are so interconnected that the number of possible failure combinations is effectively infinite. In situations involving multiple, unrelated failures, the QRH may not provide a direct solution. In such cases, pilots are expected to "combine elements of more than one checklist or exercise judgment to determine the safest course of action".
: In-flight engine restarts, surge management, and flameouts.