787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Warning Systems -
System Description
Copyright © The Boeing Company. See title page for details.
15.20.14 D615Z003-TBC
Speedbrake Warning During Rollout
The SPEEDBRAKE warning alerts the crew that the speedbrake has not deployed
during landing or during a rejected takeoff. The warning is displayed on both
PFDs and both HUDs and is accompanied by a Master WARNING light and aural
SPEEDBRAKE, SPEEDBRAKE.
The SPEEDBRAKE warning occurs when:
• the airplane is on the ground, and
• both thrust levers not in the takeoff thrust position, and
• the groundspeed exceeds 85 knots, and
• the speedbrake lever position is less than 35º, and
• all the above occur together for 1 second
The warning is automatically reset when any of the above conditions are no longer
true.
Configuration Warning System Non-normal Operation
If the takeoff and landing warning system fails, the EICAS advisory message
CONFIG WARNING SYS is displayed. If the takeoff and landing configuration
system fails, CONFIG messages may or may not be displayed. If the messages are
displayed with the CONFIG WARNING SYS message, the CONFIG messages
may not be correct.
MCP Selected Altitude Alert
Altitude alerting is provided when approaching or departing the altitude selected
in the MCP altitude window.
Approaching MCP Selected Altitude
At 900 feet prior to reaching the selected altitude a highlighted white box is
displayed around the selected altitude and the current altitude on the PFD. The
highlights are no longer displayed when within 300 feet of the selected altitude.
Departing MCP Selected Altitude
When departing the selected altitude by 300 feet, the EICAS alert message
ALTITUDE ALERT is displayed, and a highlighted amber box is displayed
around the current altitude. The message and amber highlight are no longer
displayed when:
• subsequently reapproaching to within 300 feet of the selected altitude, or
• a new MCP altitude is selected, or
• departing more than 900 feet from the selected altitude
February 15, 2010
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