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TERRAIN on both HUDs
Altitude voice
annunciations
None Altitude voice
annunciations during
approach
787 Flight Crew Operations Manual
Warning Systems -
System Description
15.20.10 Boeing Proprietary
Airspeed Alerts
Stall Warning
Warning of an impending stall is provided by left and right stick shakers, which
independently vibrate the left and right control columns.
Airspeed Low
The EICAS caution message AIRSPEED LOW is displayed and the box around
the current airspeed indication on the PFD is highlighted amber when airspeed is
below minimum maneuvering speed.
This indication is accompanied by a beeper and Master WARNING/CAUTION
light.
Takeoff V1 Airspeed
The voice annunciation VEE ONE sounds when airspeed reaches V1 during
takeoff.
Overspeed Warning
The EICAS warning message OVERSPEED is displayed if airspeed is greater
than VMO/MMO. The message remains displayed until airspeed is reduced below
VMO/MMO.
This indication is accompanied by a non-resettable siren.
Tail Strike Detection System
The tail strike alert system detects ground contact which could damage the
airplane pressure hull. A two inch blade target and two proximity sensors are
installed on the aft body of the airplane. The EICAS caution message TAIL
STRIKE is displayed when a tail strike is detected.
This indication is accompanied by a beeper and Master WARNING/CAUTION
light.
Takeoff And Landing Configuration Warning System
The takeoff and landing configuration warning system alerts the crew that the
airplane is not configured for normal takeoff or normal landing.
Takeoff Configuration Warnings
The respective EICAS warning message CONFIG is displayed if:
• airplane is on the ground, and
• FUEL CONTROL switches are in RUN position, and
• either engine thrust is in takeoff range, and
787 Flight Crew Operations Manual
Warning Systems -
System Description
Boeing Proprietary 15.20.11
• thrust reversers are not unlocked or deployed, and
• airspeed is less than V1, and
• any of the following configurations exist;
• any door not closed, latched, and locked, or
• flaps not in takeoff position, or
• parking brake set, or
• rudder trim not centered, or
• SPEED BRAKE lever not in DOWN detent, or
• stabilizer trim not in green band
Takeoff configuration warnings are inhibited at V1.
When the EICAS warning message CONFIG is displayed, pushing either Master
WARNING/CAUTION reset switch resets the Master WARNING lights but does
not silence the siren. If thrust is decreased below takeoff range and airspeed is less
than V1 but the airplane is still not configured for takeoff, the Master WARNING
lights are extinguished and the siren is silenced. The CONFIG message remains
displayed for 10 seconds after thrust is reduced to aid in identifying the takeoff
configuration.
Landing Configuration Warning
The landing configuration warning system alerts the crew the landing gear is not
extended for landing. The EICAS warning message CONFIG GEAR is displayed
if:
• the airplane is in flight, and
• any landing gear is not down and locked, and
• any of the following configurations exist;
• either Thrust lever closed and radio altitude less than 800 feet, or
• FLAP lever in landing position
If the message is displayed because a Thrust lever is closed at low radio altitudes,
pushing either Master WARNING/CAUTION reset switch silences the siren and
extinguishes the Master WARNING lights. The message remains displayed until
the Thrust levers are advanced or landing gear is down and locked.
If the message is displayed because the FLAP lever is in landing position, the siren
cannot be silenced by pushing a Master WARNING/CAUTION reset switch and
the message remains displayed. The siren sounds and the message is displayed
until the landing gear is down and locked or GEAR OVRD is selected to OVRD
on the GPWS page of the TCP.
787 Flight Crew Operations Manual
Warning Systems -
System Description
15.20.12 Boeing Proprietary
Speedbrake Lever Extend Beyond ARM During Climb
In flight, the EICAS warning message CONFIG SPOILERS alerts the crew if:
• the SPEEDBRAKE lever is extended beyond ARMED, and
• climb or higher thrust is set on either thrust levers
When the EICAS warning message CONFIG SPOILERS is displayed in flight,
pushing either Master WARNING/CAUTION Reset switch silences the siren and
extinguishes the Master WARNING lights. The EICAS message remains
displayed until:
　
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