787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Warning Systems Chapter 15
System Description Section 20
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 15.20.1
15.20 Warning Systems-System Description
Warning Systems20 System DescriptionSystem Desc ription
Introduction
Warning systems consist of:
• engine indication and crew alerting system (EICAS)
• airspeed alerts
• tail strike detection system
• takeoff and landing configuration warning system
• MCP selected altitude alerts
• crew alertness monitor (as configured by the airline)
• traffic alert and collision avoidance system (TCAS)
• windshear alerts
• ground proximity warning system (GPWS)
Engine Indication and Crew Alerting System (EICAS)
EICAS consolidates engine and airplane system indications and is the primary
means of displaying system indications and alerts to the flight crew. EICAS
information may be displayed on any MFD as desired by the flight crew.
System Alert Level Definitions
Time Critical Warnings
Time critical warnings alert the crew of a non-normal operational condition
requiring immediate crew awareness and corrective action to maintain safe flight.
Master warning lights, voice alerts, and ADI indications or stick shakers announce
time critical conditions.
Warnings
Warnings alert the crew to a non-normal operational or system condition requiring
immediate crew awareness and corrective action.
Cautions
Cautions alert the crew to a non-normal operational or system condition requiring
immediate crew awareness. Corrective action may be required.
Advisories
Advisories alert the crew to a non-normal operational or system condition
requiring routine crew awareness. Corrective action may be required.
February 15, 2010
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