737 MAX Flight Crew Operations Manual
Supplementary Procedures -
Adverse Weather
SP.16.6
MN-FLT-OH-201
Before Taxi Procedure
Do the normal Before Taxi Procedure with the following modifications:
GENERATOR 1 and 2 switches .....................................ON
F/O
Normally the IDG’s stabilize within one minute, although
due to cold oil, up to five minutes can be needed to produce
steady power.
If there is snow or ice accumulation on the wing, consider delaying the
flight control check until after de-icing/anti-icing is accomplished.
Flight controls ............................................................ Check
C
An increase in control forces can be expected at low
temperatures.
CAUTION: The flap position indicator and the leading edge
devices annunciator panel should be closely observed
for positive movement. If the flaps should stop, the
flap lever should be placed immediately in the same
position as indicated.
Flaps ........................................................................... Check
F/O
Move the flaps from Flaps up to Flaps 40 back to Flaps up
(i.e., full travel) to ensure freedom of movement.
If taxi route is through ice, snow, slush or standing water in low
temperatures or if precipitation is falling with temperatures below
freezing, taxi out with the flaps up. Taxiing with the flaps extended
subjects the flaps and flap drives to contamination. Leading edge devices
are also susceptible to slush accumulations.
Call “FLAPS ___” as needed.
C
Flap lever...............................................Set flaps, as needed
F/O
Taxi–Out
CAUTION: Taxi at a reduced speed. Use smaller nose wheel
steering wheel and rudder inputs and apply minimum
thrust smoothly. Differential thrust may be used to
help maintain airplane momentum during turns. At
all other times, apply thrust evenly. Taxiing on
slippery taxiways or runways at excessive speed or
with high crosswinds may start a skid.
March 1, 2021
