787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Performance Dispatch
Tex t
787-8/
FAA
Category A Brakes
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC PD.13.5
An additional quantity of oxygen is required when flight altitudes above
41000 ft are planned. Regulations require that one active duty pilot must
don the oxygen mask and breathe diluted oxygen for the duration of the
flight above 41000 ft. The additional quantity of oxygen required is 2.05
liters/person/minute (1.2 psi/person/minute for the single cylinder
system), or 13 liters/person/minute (8 psi/person/minute) if 100% oxygen
is selected during normal usage.
Net Level Off Weight
The Net Level Off Weight table is provided to determine terrain clearance
capability in straight and level flight following an engine failure.
Regulations require terrain clearance planning based on net performance
which is the gross (or actual) gradient performance degraded by 1.1%. In
addition, the net level off pressure altitude must clear the terrain by 1000
ft.
To determine the maximum weight for terrain clearance, enter the table
with required net level off pressure altitude and expected ISA deviation to
obtain weight. Adjust weight for anti-ice operation as noted below the
table.
Extended Range Operations
Regulations require that flights conducted over a route that contains a
point further than one hour’s time at “normal one engine inoperative
speed” from an adequate diversion airport comply with rules set up
specifically for “Extended Range Operation with Two Engine airplanes”.
This section provides reserve fuel planning information for the "Critical
Fuel Scenario" based on two engine operation at Long Range Cruise as
well as single engine operation at Long Range Cruise.
Long Range Cruise Critical Fuel Reserves
Enter Ground to Air Mile Conversion table with forecast wind and ground
distance to diversion airport from critical point to obtain air distance. Now
enter Critical Fuel table with air distance and expected weight at the
critical point and read required fuel. Apply the noted fuel adjustments as
necessary.
As noted below each table, the fuel required is the greater of the two engine
fuel and the single engine fuel. This fuel is compared to the amount of fuel
normally onboard the airplane at that point in the route. If the fuel required
by the critical fuel reserves exceeds the amount of fuel normally expected,
the fuel load must be adjusted accordingly.
February 15, 2010
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