787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Performance Dispatch
Text
787-8/
FAA
Category A Brakes
Copyright © The Boeing Company. See title page for details.
PD.13.2 D615Z003-TBC
Weight for the effects of OAT, pressure altitude and wind as indicated. In
the case of multiple obstacles, enter the tables successively with each
obstacle and determine the most limiting weight.
Brakes Deactivated
When operating with brakes deactivated, the field limit weight and the V1
must be reduced to allow for reduced braking capability. A simplified
method which conservatively accounts for the reduced braking capability
of one brake deactivated is to reduce the normal runway limited weight by
TBS lb for a dry runway or TBS lb for a wet runway and the V1 associated
with the reduced weight by TBS knots. With two brakes deactivated,
reduce the normal runway limited weight by TBS lb for a dry runway or
TBS lb for a wet runway and the V1 associated with the reduced weight by
TBS knots for a dry runway or TBS knots for a wet runway. If the resulting
V1 is less than minimum V1, takeoff is permitted with V1 set equal to
V1(MCG) provided the dry accelerate stop distance corrected for wind and
slope exceeds approximately TBS ft for one brake deactivated or TBS ft
for two brakes deactivated. For wet runways, the corrected accelerate stop
distance should exceed approximately TBS ft for one brake deactivated or
TBS ft for two brakes deactivated
Detailed analysis for the specific case from the Airplane Flight Manual
may yield a less restrictive penalty.
One Thrust Reverser Inoperative
Wet runway takeoff performance presented for all brakes operating is
based on the use of one thrust reverser during deceleration. When
operating with a thrust reverser inoperative, the runway/obstacle limited
takeoff weight and V1 speed must be reduced to account for the reduced
deceleration capability. A simplified method which conservatively
February 15, 2010
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