737 MAX Flight Crew Operations Manual
Supplementary Procedures -
Anti–Ice, Rain
MN-FLT-OH-201
SP.3.3
If there is frost or ice on the lower surface outboard of measuring stick
4, there may also be frost or ice on the upper surface. The distance that
the frost extends outboard of measuring stick 4 can be used as an
indication of the extent of the frost on the upper surface.
Takeoff with CSFF on lower wing surfaces is allowable provided all
the following condition are met::
• Ambient air temperature is at or above +4°C, +39°F
• There is no precipitation or visible moisture (rain, snow, drizzle,
or fog with less than 1 mile visibility)
• Tank fuel temperature is at or above -16°C, or +3°F
YA608, YA610, YA631, YB119, YC095, YC453, YD256 - YF832, YK721 - YV671
• All leading edge devices, all control surfaces, tab surfaces,
winglet surfaces, and control surface balance panel cavities
must be free of snow, ice and frost.
YA608, YA610, YA631, YB119, YC095, YC453, YD256 - YF832, YK721 - YV671
If all of the above conditions are not met, takeoff with light coatings
of frost, up to 1/8 inch (3 mm) in thickness, on lower wing surfaces
due to cold fuel is allowable; however, all leading edge devices, all
control surfaces, tab surfaces, winglet surfaces and control surface
balance panel cavities must be free of snow, ice and frost. If the frost
on the lower surface is greater than 1/8 inch (3 mm) in thickness, all
snow, ice and frost on the wings must be removed using appropriate
deicing/anti-icing procedures.
Takeoff with frost on upper wing surfaces due to cold fuel (CSFF) is not
allowable. If any frost is present on the upper wing surface, all snow, ice
and frost on the wings must be removed using appropriate
deicing/anti-icing procedures.
March 1, 2021