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• the SPEEDBRAKE lever is DOWN or at ARMED, or
• both thrust levers are set below climb thrust
Configuration Warning System Non-normal Operation
If the takeoff and landing warning system fails, the EICAS advisory message
CONFIG WARNING SYS will be 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 200 feet of the selected altitude.
Departing MCP Selected Altitude
When departing the selected altitude by 200 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 is no longer
displayed when:
• subsequently reapproaching to within 200 feet of the selected altitude, or
• a new MCP altitude is selected, or
• departing more than 900 feet from the selected altitude.
MCP Selected Altitude Alert Inhibits
MCP selected altitude alerts are inhibited when:
• glideslope captured, or
• landing flaps selected and landing gear down and locked.
787 Flight Crew Operations Manual
Warning Systems -
System Description
Boeing Proprietary 15.20.13
Crew Alertness Monitor
[Airline Selectable Option]
The FMC continuously monitors switch action on the MCP, EFIS control panel,
display select panel, CDUs, and radio transmitter microphone switches. When a
predefined time elapses after the last switch action was detected, the EICAS
advisory message PILOT RESPONSE is displayed.
If there is still no switch action after a brief time, the EICAS caution message
PILOT RESPONSE is displayed.
If there is still no switch action the EICAS warning message PILOT RESPONSE
is displayed.
The PILOT RESPONSE message is no longer displayed after pushing any
monitored switch.
The PILOT RESPONSE message is inhibited during climb below 20,000 feet
when flaps are not up.
Traffic Alert and Collision Avoidance System (TCAS)
TCAS alerts the crew to possible conflicting traffic. TCAS interrogates operating
transponders in other airplanes, tracks the other airplanes by analyzing the
transponder replies, and predicts the flight paths and positions. TCAS provides
TCAS ND messages, voice annunciations, PFD vertical flight path guidance, and
traffic displays of the other airplanes to the flight crew. Neither ND messages,
voice annunciations, PFD vertical guidance, nor traffic display is provided for
other airplanes that do not have operating transponders. TCAS operation is
independent of ground–based air traffic control.
TCAS identifies a three–dimensional airspace around the airplane where a high
likelihood of traffic conflict exists. The dimensions of this airspace are contingent
upon the closure rate with conflicting traffic.
TCAS provides:
TCAS messages and TCAS traffic symbols can be displayed on the ND and
mini-map. TCAS messages and TCAS traffic symbols cannot be displayed on the
ND in plan mode.
TCAS messages TRAFFIC, TA ONLY, and TCAS TEST may be displayed in all
ND modes.
• resolution advisory (RA)
and display
• traffic advisory (TA) and
display
• proximate traffic display
• other traffic display.
787 Flight Crew Operations Manual
Warning Systems -
System Description
15.20.14 Boeing Proprietary
Resolution Advisories (RA) and Display
An RA is a prediction that another airplane will enter the TCAS conflict airspace
within approximately 15 to 35 seconds. If altitude data from the other airplane is
not available, no RA can be provided.
When TCAS predicts an RA:
• the TCAS red message TRAFFIC is displayed on the ND
• a TCAS voice annunciation sounds
• TCAS PFD vertical guidance is displayed
When the TCAS cyan message TFC is displayed on the ND, and the RA is within
the display range of the ND, the TCAS RA traffic symbol and its accompanying
data tag is displayed on the ND.
The TCAS RA traffic symbol is a filled red square. The RA data tag contains the
altitude and the vertical motion arrow.
For no–bearing RAs, the red RA label is displayed below the red message,
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787机组操作手册Flight Crew Operations Manual 3(121)
