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737 MAX Flight Crew Operations Manual
Supplementary Procedures -
Adverse Weather
MN-FLT-OH-201
SP.16.17
Cold weather maintenance procedures for securing the airplane may be
required. These procedures are normally done by maintenance personnel,
and include, but are not limited to:
• protective covers and plugs installed
• water storage containers drained
• toilets drained
• doors and sliding windows closed
YA201 - YA221, YA571 - YA657, YB104 - YK653, YL621, YL806 - YN112, YN701 - YV671
• batteries removed. If the batteries will be exposed to temperatures
below -18°C, the batteries should be removed and stored in an area
warmer than -18°C, but below 40°C. Subsequent installation of the
warm batteries ensures the starting capability of the APU.
March 1, 2021