737 Flight Crew Operations Manual
Performance Inflight
Text
737-8/LEAP-1B27
FAA
CATB
MN-FLT-OH-201
PI.18.13
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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 Landing Rate of Climb Available
Rate of climb data is provided as guidance information in the event an
engine inoperative landing (manual or autoland) is planned. The tables
show gear down rate of climb available for Flaps 15 and Flaps 30. Enter
the table with TAT and pressure altitude to read rate of climb available.
Apply adjustments shown to correct for weight.
Alternate Mode EEC
Introduction
This section contains performance data for airplane operation with the
Electronic Engine Control (EEC) in the alternate mode (ALTN EEC switch
illuminated) for applicable thrust ratings. The data includes engine bleed
effects for normal air conditioning operation i.e., two packs on at normal
flow all engines operating.
Operation with assumed temperature reduced thrust is not permitted with
the EEC in the alternate mode.
Limit Weight
A simplified method which conservatively accounts for the effects of EEC
in the ALTERNATE mode is to reduce the normal mode performance
limited weights. The Limit Weight table provides takeoff field, climb,
obstacle, tire speed and brake energy weights. No adjustment is necessary
for weight limits not shown. To determine limit weights for operations with
the EEC in the ALTERNATE mode, enter the table with each of the limit
weights for normal mode EEC operation and read the associated limit
weight for each performance condition. The most limiting of the takeoff
weights must be used.
Derated or reduced takeoff thrust takeoffs are not allowed with the EEC in
the ALTERNATE mode. Adjustments to the limit weights provided in this
section are not valid for takeoffs using improved climb. Likewise,
adjustments to the limit weights are not valid for takeoffs with a
contaminated runway. Analysis from the Airplane Flight Manual - Digital
Performance Information may yield less restrictive limit weights.
October 26, 2021
