787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Warning Systems -
System Description
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC 15.20.15
MCP Selected Altitude Alert Inhibits
MCP selected altitude alerts are inhibited when:
• glideslope captured, or
• landing flaps selected and landing gear down and locked
500 Foot Callout
An aural callout of “FIVE HUNDRED” is announced on approach when radio
altitude transitions through 500 feet, and any of the following conditions are met:
• flight path is not within + or - 2 dots of a valid glideslope beam, or
• flight path is not within + or - 2 dots of a valid localizer beam, or
• no valid localizer signal is received, or
• no valid glideslope signal is received, or
• glideslope inhibit switch is actuated
Crew Alertness Monitor
The Crew Alertness Monitor is configured (enabled/disabled) by the airline.
When enabled, 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.
February 15, 2010
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