737 MAX Flight Crew Operations Manual
Performance Inflight
Text
737-8/LEAP-1B28
FAA
CATB
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
PI.38.12
MN-FLT-OH-201
To determine fuel required, enter the Ground to Air Miles Conversion table
(Table 1) with the desired ground distance and correct for anticipated
winds to obtain air distance to destination. Then enter the
Driftdown/Cruise Fuel and Time table (Table 2) with air distance and
weight at start of driftdown to determine fuel and time required. If altitudes
other than the level off altitude is used, fuel and time required may be
obtained by using the Engine Inoperative Long Range Cruise Diversion
Fuel and Time table.
Long Range Cruise Altitude Capability
The table shows the maximum altitude that can be maintained at a given
weight and air temperature (ISA deviation), based on LRC speed, Max
Continuous thrust, and 100 ft/min residual rate of climb.
Long Range Cruise Control
The table provides target %N1, engine inoperative Long Range Cruise
Mach number, IAS and fuel flow for the airplane weight and pressure
altitude. The fuel flow values in this table reflect single engine fuel burn.
APU Operation During Flight
For APU operation during flight, increase fuel flow according to the
following table. These increments include the APU fuel flow and the effect
of increased drag from the APU door.
Long Range Cruise Diversion Fuel and Time
Tables are provided for crews to determine the fuel and time required to
proceed to an alternate airfield with one engine inoperative. The data is
based on single engine Long Range Cruise speed and .78/280/250 descent.
To determine the remaining fuel and time required, first enter the Ground
to Air Miles Conversion table (Table 1) to convert ground distance and
enroute wind to an equivalent still air distance. Next, enter the Reference
Fuel and Time table (Table 2) with air distance from Table 1 and the
desired altitude and read reference fuel and time required. Lastly, enter the
Fuel Required Adjustment table (Table 3) with the reference fuel and the
actual weight at checkpoint to obtain fuel required to destination.
PRESSURE ALTITUDE
(1000 FT)
APU FUEL FLOW
(KG/HR)
39
45
35
45
31
50
25
60
20
65
15
75
10
85
5
95
March 1, 2021
