787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Warning Systems -
System Description
Copyright © The Boeing Company. See title page for details.
15.20.12 D615Z003-TBC
Thrust Asymmetry Minimum Speed (TAMS)
TAMS is displayed on the speed tape to provide pilots with situational awareness
of the minimum control speed for operation with a large thrust asymmetry.
TAMS varies with weight and CG but will always be at least 10 knots above
minimum control speed during takeoff or go-around.
When airspeed decreases to TAMS, the AIRSPEED, AIRSPEED aural sounds and
the Master WARNING light illuminates.
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 siren and Master WARNING light.
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 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
• 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
• SPEEDBRAKE lever not in DOWN detent, or
• stabilizer trim not in green band
February 15, 2010
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