737 Flight Crew Operations Manual
Performance Inflight - QRH
Text
737-500W/CFM56-3_20K
FAA
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-4Q8-SJA PI-QRH.64.5
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 .74M/250 KIAS
descent. Enter with Air Distance as determined from the Ground to Air
Miles Conversion Table and read Fuel and Time required at the cruise
pressure altitude. Adjust the fuel obtained for deviation from the reference
weight at checkpoint as required by entering the off reference fuel
corrections table with the fuel required for the reference weight and the
actual weight at checkpoint. Read fuel required and time for the actual
weight.
Holding
Single engine holding data is provided in the same format as the all engine
holding data and is based on the same assumptions.
Gear Down
This section contains performance for airplane operation with the landing
gear extended for all phases of flight. The data is based on engine bleeds
for normal air conditioning.
Note: The Flight Management Computer System (FMCS) does not contain
special provisions for operation with landing gear extended. As a result,
the FMCS will generate inappropriate enroute speed schedules, display
non-conservative predictions of fuel burn, estimated time of arrival (ETA),
maximum altitude, and compute overly shallow descent path. An accurate
estimated time of arrival (ETA) is available if current speed or Mach is
entered into the VNAV cruise page.
Tables for gear down performance in this section are identical in format
and used in the same manner as tables for the gear up configuration
previously described.
June 15, 2020
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