737 Flight Crew Operations Manual
Supplementary Procedures -
Flight Management, Navigation
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
SP.11.20 D6-27370-866-EGP
Step Climb Evaluation
CRZ page ....................................................................................... Select
Enter the desired step climb altitude on the STEP line. If known, enter
the estimated average true wind direction/speed for the desired step
climb altitude on the ACTUAL WIND line.
Step climb savings .................................................................. Determine
Observe the fuel SAVINGS/PENALTY and FUEL AT ______
(destination) lines to determine if a higher cruise altitude is
advantageous.
If step climb fuel savings are significant, use the appropriate climb
procedure to initiate climb to the higher altitude when NOW is
displayed on STEP POINT line.
Note: Step climb evaluations do not consider buffet margin limits.
If the altitude entered for the step climb evaluation is higher
than the maximum altitude for flight with an adequate buffet
margin, the message “MAX ALT FLXXX” will be displayed
in the scratch pad. Ensure the new cruise altitude entered for
the climb is at or below the MAX ALT displayed in the
message in order to maintain a safe buffet margin.
Entering Descent Forecasts
DES page........................................................................................ Select
Observe FORECAST prompt displayed.
DES FORECASTS page ................................................................ Select
Verify the TRANS LVL and revise if required. Enter average ISA
DEV forecast for descent and destination QNH. Enter forecast
descent WINDs (for up to three different altitudes).
EXEC key ........................................................................................ Push
Observe MOD DES FORECASTS page changes to ACT.
Engine Out
Engine out climb and cruise pages provide advisory information for engine
out operation. Refer to section 11.41 and 11.42 for a complete description
of ENG OUT CLB and ENG OUT CRZ pages.
September 24, 2015
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